Example #1
0
    def on_load_ptm(self, event):
        file_choices = "PTM NetCDF (*.nc)|*.nc|PTM Binary (*_bin.out)|*_bin.out|All Files (*.*)|*.*"

        dlg = wx.FileDialog(self,
                            message="Open PTM file...",
                            defaultDir=os.getcwd(),
                            defaultFile="",
                            wildcard=file_choices,
                            style=wx.FD_MULTIPLE)

        if dlg.ShowModal() == wx.ID_OK:
            self.plot_type = 'particles'
            path = dlg.GetPath()

            # Initialise the class
            if dlg.GetFilterIndex() == 0:  #SUNTANS
                self.flash_status_message("Opening PTM netcdf file: %s" % path)
                self.PTM = PtmNC(path)
            elif dlg.GetFilterIndex() == 1:  #PTM
                self.flash_status_message("Opening PTM binary file: %s" % path)
                self.PTM = PtmBin(path)

            self.Nt = self.PTM.nt

            # Update the time drop down list
            self.timestr = [
                datetime.strftime(tt, '%d-%b-%Y %H:%M:%S')
                for tt in self.PTM.time
            ]
            self.time_list.SetItems(self.timestr)

            # Plot the first time step
            if 'xlims' in self.__dict__:
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,xlims=self.xlims,\
                ylims=self.ylims,color=self.particlecolor,\
                fontcolor='w',markersize=self.particlesize)
            else:
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,fontcolor='w',\
                    color=self.particlecolor,markersize=self.particlesize)
            # redraw the figure
            self.canvas.draw()
Example #2
0
    def on_load_ptm(self, event):
        file_choices = "PTM NetCDF (*.nc)|*.nc|PTM Binary (*_bin.out)|*_bin.out|All Files (*.*)|*.*"
        
        dlg = wx.FileDialog(
            self, 
            message="Open PTM file...",
            defaultDir=os.getcwd(),
            defaultFile="",
            wildcard=file_choices,
            style= wx.FD_MULTIPLE)
        
        if dlg.ShowModal() == wx.ID_OK:
            self.plot_type = 'particles'
            path = dlg.GetPath()

            # Initialise the class
            if dlg.GetFilterIndex() == 0: #SUNTANS
                self.flash_status_message("Opening PTM netcdf file: %s" % path)
                self.PTM = PtmNC(path)
            elif dlg.GetFilterIndex() == 1: #PTM
                self.flash_status_message("Opening PTM binary file: %s" % path)
                self.PTM = PtmBin(path)

            self.Nt = self.PTM.nt
            
            # Update the time drop down list
            self.timestr = [datetime.strftime(tt,'%d-%b-%Y %H:%M:%S') for tt in self.PTM.time]
            self.time_list.SetItems(self.timestr)

            # Plot the first time step
            if self.__dict__.has_key('xlims'):
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,xlims=self.xlims,\
                ylims=self.ylims,color=self.particlecolor,\
                fontcolor='w',markersize=self.particlesize)
            else:
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,fontcolor='w',\
                    color=self.particlecolor,markersize=self.particlesize)
            # redraw the figure
            self.canvas.draw()
Example #3
0
class SunPlotPy(wx.Frame, Spatial, Grid):
    """
    The main frame of the application
    """
    title = 'sunplot(py)'

    # Plotting options
    autoclim = True
    showedges = False
    bgcolor = 'k'
    textcolor = 'w'
    cmap = 'RdBu'
    particlesize = 1.8
    particlecolor = 'm'

    # other flags
    collectiontype = 'cells'
    oldcollectiontype = 'cells'

    #
    tindex = 0
    depthlevs = [0., 10., 100., 200., 300., 400., 500.,\
        1000.,2000.,3000.,4000.,5000]

    _FillValue = 999999

    def __init__(self):
        wx.Frame.__init__(self, None, -1, self.title)

        self.create_menu()
        self.create_status_bar()
        self.create_main_panel()

        #self.draw_figure()

    def create_menu(self):
        self.menubar = wx.MenuBar()

        ###
        # File Menu
        ###
        menu_file = wx.Menu()
        # Load a hydro output file
        m_expt = menu_file.Append(-1, "&Open file\tCtrl-O", "Open netcdf file")
        self.Bind(wx.EVT_MENU, self.on_open_file, m_expt)

        # Load a grid file
        m_grid = menu_file.Append(-1, "&Load grid\tCtrl-G",
                                  "Load SUNTANS grid from folder")
        self.Bind(wx.EVT_MENU, self.on_load_grid, m_grid)

        # Load a particle file
        m_part = menu_file.Append(-1, "&Load PTM file\tCtrl-Shift-P",
                                  "Load a PTM file")
        self.Bind(wx.EVT_MENU, self.on_load_ptm, m_part)

        # Save current scene as an animation
        m_anim = menu_file.Append(-1,
                                  "&Save animation of current scene\tCtrl-S",
                                  "Save animation")
        self.Bind(wx.EVT_MENU, self.on_save_anim, m_anim)

        # Save the current figure
        m_prin = menu_file.Append(-1, "&Print current scene\tCtrl-P",
                                  "Save figure")
        self.Bind(wx.EVT_MENU, self.on_save_fig, m_prin)

        menu_file.AppendSeparator()
        # Exit
        m_exit = menu_file.Append(-1, "E&xit\tCtrl-X", "Exit")
        self.Bind(wx.EVT_MENU, self.on_exit, m_exit)

        ###
        # Tools menu
        ###
        menu_tools = wx.Menu()
        m_gridstat = menu_tools.Append(-1, "&Plot grid size statistics",
                                       "SUNTANS grid size")
        self.Bind(wx.EVT_MENU, self.on_plot_gridstat, m_gridstat)

        m_countcells = menu_tools.Append(-1, "&Count # grid cells",
                                         "Grid cell count")
        self.Bind(wx.EVT_MENU, self.on_count_cells, m_countcells)

        m_overlaybathy = menu_tools.Append(-1, "&Overlay depth contours",
                                           "Depth overlay")
        self.Bind(wx.EVT_MENU, self.on_overlay_bathy, m_overlaybathy)

        ###
        # Help Menu
        ###
        menu_help = wx.Menu()
        m_about = menu_help.Append(-1, "&About\tF1", "About the demo")
        self.Bind(wx.EVT_MENU, self.on_about, m_about)

        # Add all of the menu bars
        self.menubar.Append(menu_file, "&File")
        self.menubar.Append(menu_tools, "&Tools")
        self.menubar.Append(menu_help, "&Help")
        self.SetMenuBar(self.menubar)

    def create_main_panel(self):
        """ Creates the main panel with all the controls on it:
             * mpl canvas
             * mpl navigation toolbar
             * Control panel for interaction
        """
        self.panel = wx.Panel(self)

        # Create the mpl Figure and FigCanvas objects.
        # 5x4 inches, 100 dots-per-inch
        #
        self.dpi = 100
        #self.fig = Figure((7.0, 6.0), dpi=self.dpi,facecolor=self.bgcolor)
        self.fig = Figure((7.0, 6.0), dpi=self.dpi)
        self.canvas = FigCanvas(self.panel, -1, self.fig)

        # Since we have only one plot, we can use add_axes
        # instead of add_subplot, but then the subplot
        # configuration tool in the navigation toolbar wouldn't
        # work.
        #
        self.axes = self.fig.add_subplot(111)
        #SetAxColor(self.axes,self.textcolor,self.bgcolor)

        # Bind the 'pick' event for clicking on one of the bars
        #
        #self.canvas.mpl_connect('pick_event', self.on_pick)

        ########
        # Create widgets
        ########
        self.variable_list = wx.ComboBox(self.panel,
                                         size=(200, -1),
                                         choices=['Select a variable...'],
                                         style=wx.CB_READONLY)
        self.variable_list.Bind(wx.EVT_COMBOBOX, self.on_select_variable)

        self.time_list = wx.ComboBox(self.panel,
                                     size=(200, -1),
                                     choices=['Select a time step...'],
                                     style=wx.CB_READONLY)
        self.time_list.Bind(wx.EVT_COMBOBOX, self.on_select_time)

        self.depthlayer_list = wx.ComboBox(
            self.panel,
            size=(200, -1),
            choices=['Select a vertical layer...'],
            style=wx.CB_READONLY)
        self.depthlayer_list.Bind(wx.EVT_COMBOBOX, self.on_select_depth)

        self.show_edge_check = wx.CheckBox(self.panel,
                                           -1,
                                           "Show Edges",
                                           style=wx.ALIGN_RIGHT)
        self.show_edge_check.Bind(wx.EVT_CHECKBOX, self.on_show_edges)

        if USECMOCEAN:
            cmaps = []
            for cmap in cm.cmapnames:
                cmaps.append(cmap)
                cmaps.append(cmap + '_r')  # Add all reverse map options
        else:
            # Use matplotlib standard
            cmaps = list(matplotlib.cm.datad.keys())

        cmaps.sort()
        self.colormap_list = wx.ComboBox(self.panel,
                                         size=(100, -1),
                                         choices=cmaps,
                                         style=wx.CB_READONLY)
        self.colormap_list.Bind(wx.EVT_COMBOBOX, self.on_select_cmap)
        self.colormap_label = wx.StaticText(self.panel, -1, "Colormap:")

        self.clim_check = wx.CheckBox(self.panel,
                                      -1,
                                      "Manual color limits ",
                                      style=wx.ALIGN_RIGHT)
        self.clim_check.Bind(wx.EVT_CHECKBOX, self.on_clim_check)

        self.climlow = wx.TextCtrl(self.panel,
                                   size=(100, -1),
                                   style=wx.TE_PROCESS_ENTER)
        self.climlow.Bind(wx.EVT_TEXT_ENTER, self.on_climlow)

        self.climhigh = wx.TextCtrl(self.panel,
                                    size=(100, -1),
                                    style=wx.TE_PROCESS_ENTER)
        self.climhigh.Bind(wx.EVT_TEXT_ENTER, self.on_climhigh)

        # Labels
        self.variable_label = wx.StaticText(self.panel,
                                            -1,
                                            "Variable:",
                                            size=(200, -1))
        self.time_label = wx.StaticText(self.panel,
                                        -1,
                                        "Time step:",
                                        size=(200, -1))
        self.depth_label = wx.StaticText(self.panel,
                                         -1,
                                         "Vertical level:",
                                         size=(200, -1))

        # Create the navigation toolbar, tied to the canvas
        #
        self.toolbar = NavigationToolbar(self.canvas)
        #self.toolbar.toolitems[8][3]='my_save_fig'

        #def my_save_fig(self,*args):
        #    print 'saving figure'
        #    return "break"

        #########
        # Layout with box sizers
        #########

        self.vbox = wx.BoxSizer(wx.VERTICAL)
        self.vbox.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
        self.vbox.Add(self.toolbar, 0, wx.EXPAND)

        self.vbox.AddSpacer(10)
        #self.vbox.Add((-1,25))

        flags = wx.ALIGN_LEFT | wx.ALL | wx.ALIGN_CENTER_VERTICAL

        self.hbox0 = wx.BoxSizer(wx.HORIZONTAL)
        self.hbox0.Add(self.show_edge_check, 0, border=10, flag=flags)
        self.hbox0.Add(self.colormap_label, 0, border=10, flag=flags)
        self.hbox0.Add(self.colormap_list, 0, border=10, flag=flags)
        self.hbox0.Add(self.clim_check, 0, border=10, flag=flags)
        self.hbox0.Add(self.climlow, 0, border=10, flag=flags)
        self.hbox0.Add(self.climhigh, 0, border=10, flag=flags)

        self.vbox.AddSpacer(5)
        self.hbox1 = wx.BoxSizer(wx.HORIZONTAL)
        self.hbox1.Add(self.variable_label, 0, border=10, flag=flags)
        self.hbox1.Add(self.time_label, 0, border=10, flag=flags)
        self.hbox1.Add(self.depth_label, 0, border=10, flag=flags)

        self.vbox.AddSpacer(5)
        self.hbox2 = wx.BoxSizer(wx.HORIZONTAL)
        self.hbox2.Add(self.variable_list, 0, border=10, flag=flags)
        self.hbox2.Add(self.time_list, 0, border=10, flag=flags)
        self.hbox2.Add(self.depthlayer_list, 0, border=10, flag=flags)

        self.vbox.Add(self.hbox1, 0, flag=wx.ALIGN_LEFT | wx.TOP)
        self.vbox.Add(self.hbox2, 0, flag=wx.ALIGN_LEFT | wx.TOP)
        self.vbox.Add(self.hbox0, 0, flag=wx.ALIGN_LEFT | wx.TOP)

        self.panel.SetSizer(self.vbox)
        self.vbox.Fit(self)

    ##########
    # Event functions
    ##########

    def create_figure(self):
        """
        Creates the figure
        """
        # Find the colorbar limits if unspecified
        if self.autoclim:
            self.clim = [self.data.min(), self.data.max()]
            self.climlow.SetValue('%3.1f' % self.clim[0])
            self.climhigh.SetValue('%3.1f' % self.clim[1])

        if 'collection' in self.__dict__:
            #self.collection.remove()
            self.axes.collections.remove(self.collection)
        else:
            # First call - set the axes limits
            self.axes.set_aspect('equal')
            self.axes.set_xlim(self.xlims)
            self.axes.set_ylim(self.ylims)

        if self.collectiontype == 'cells':
            self.collection = PolyCollection(self.xy, cmap=self.cmap)
            self.collection.set_array(np.array(self.data[:]))
            if not self.showedges:
                self.collection.set_edgecolors(
                    self.collection.to_rgba(np.array((self.data[:]))))
        elif self.collectiontype == 'edges':
            xylines = [self.xp[self.edges], self.yp[self.edges]]
            linesc = [
                list(zip(xylines[0][ii, :], xylines[1][ii, :]))
                for ii in range(self.Ne)
            ]
            self.collection = LineCollection(linesc,
                                             array=np.array(self.data[:]),
                                             cmap=self.cmap)

        self.collection.set_clim(vmin=self.clim[0], vmax=self.clim[1])

        self.axes.add_collection(self.collection)
        self.title = self.axes.set_title(self.genTitle(), color=self.textcolor)
        self.axes.set_xlabel('Easting [m]')
        self.axes.set_ylabel('Northing [m]')

        # create a colorbar

        if 'cbar' not in self.__dict__:
            self.cbar = self.fig.colorbar(self.collection)
            #SetAxColor(self.cbar.ax.axes,self.textcolor,self.bgcolor)
        else:
            #pass
            print('Updating colorbar...')
            #self.cbar.check_update(self.collection)
            self.cbar.on_mappable_changed(self.collection)

        self.canvas.draw()

    def update_figure(self):
        if self.autoclim:
            self.clim = [self.data.min(), self.data.max()]
            self.climlow.SetValue('%3.1f' % self.clim[0])
            self.climhigh.SetValue('%3.1f' % self.clim[1])
        else:
            self.clim = [float(self.climlow.GetValue()),\
                float(self.climhigh.GetValue())]

        # check whether it is cell or edge type
        if self.hasDim(self.variable, self.griddims['Ne']):
            self.collectiontype = 'edges'
        elif self.hasDim(self.variable, self.griddims['Nc']):
            self.collectiontype = 'cells'

        # Create a new figure if the variable has gone from cell to edge of vice
        # versa
        if not self.collectiontype == self.oldcollectiontype:
            self.create_figure()
            self.oldcollectiontype = self.collectiontype

        self.collection.set_array(np.array(self.data[:]))
        self.collection.set_clim(vmin=self.clim[0], vmax=self.clim[1])

        # Cells only
        if self.collectiontype == 'cells':
            if not self.showedges:
                self.collection.set_edgecolors(
                    self.collection.to_rgba(np.array((self.data[:]))))
            else:
                self.collection.set_edgecolors('k')
                self.collection.set_linewidths(0.2)

        # Update the title
        self.title = self.axes.set_title(self.genTitle(), color=self.textcolor)

        #Update the colorbar
        self.cbar.update_normal(self.collection)

        # redraw the figure
        self.canvas.draw()

    def on_pick(self, event):
        # The event received here is of the type
        # matplotlib.backend_bases.PickEvent
        #
        # It carries lots of information, of which we're using
        # only a small amount here.
        #
        box_points = event.artist.get_bbox().get_points()
        msg = "You've clicked on a bar with coords:\n %s" % box_points

        dlg = wx.MessageDialog(self, msg, "Click!",
                               wx.OK | wx.ICON_INFORMATION)

        dlg.ShowModal()
        dlg.Destroy()

    def on_select_variable(self, event):
        vname = event.GetString()
        self.flash_status_message("Selecting variable: %s" % vname)
        # update the spatial object and load the data
        self.variable = vname
        self.loadData(variable=self.variable)

        # Check if the variable has a depth coordinate
        depthstr = ['']
        # If so populate the vertical layer box
        if self.hasDim(self.variable, self.griddims['Nk']):
            depthstr = ['%3.1f' % self.z_r[k] for k in range(self.Nkmax)]
            depthstr += ['surface', 'seabed']

        elif self.hasDim(self.variable, 'Nkw'):
            depthstr = ['%3.1f' % self.z_w[k] for k in range(self.Nkmax + 1)]

        self.depthlayer_list.SetItems(depthstr)

        # Update the plot
        self.update_figure()

    def on_select_time(self, event):
        self.tindex = event.GetSelection()
        # Update the object time index and reload the data
        if self.plot_type == 'hydro':
            if not self.tstep == self.tindex:
                self.tstep = self.tindex
                self.loadData()
                self.flash_status_message("Selecting variable: %s..." %
                                          event.GetString())

                # Update the plot
                self.update_figure()
        elif self.plot_type == 'particles':
            self.PTM.plot(self.tindex,ax=self.axes,\
                xlims=self.axes.get_xlim(),ylims=self.axes.get_ylim())

            self.canvas.draw()

    def on_select_depth(self, event):
        kindex = event.GetSelection()
        if not self.klayer[0] == kindex:
            # Check if its the seabed or surface value
            if kindex >= self.Nkmax:
                kindex = event.GetString()
            self.klayer = [kindex]
            self.loadData()
            self.flash_status_message("Selecting depth: %s..." %
                                      event.GetString())

            # Update the plot
            self.update_figure()

    def on_open_file(self, event):
        file_choices = "SUNTANS NetCDF (*.nc)|*.nc*|UnTRIM NetCDF (*.nc)|*.nc*|All Files (*.*)|*.*"

        dlg = wx.FileDialog(self,
                            message="Open SUNTANS file...",
                            defaultDir=os.getcwd(),
                            defaultFile="",
                            wildcard=file_choices,
                            style=wx.FD_MULTIPLE)

        if dlg.ShowModal() == wx.ID_OK:
            self.plot_type = 'hydro'

            path = dlg.GetPaths()

            # Initialise the class
            if dlg.GetFilterIndex() == 0 or dlg.GetFilterIndex() > 1:  #SUNTANS
                self.flash_status_message("Opening SUNTANS file: %s" % path)
                try:
                    Spatial.__init__(self, path, _FillValue=self._FillValue)
                except:
                    Spatial.__init__(self, path, _FillValue=-999999)
                startvar = 'dv'
            if dlg.GetFilterIndex() == 1:  #UnTRIM
                self.flash_status_message("Opening UnTRIMS file: %s" % path)
                #Spatial.__init__(self,path,gridvars=untrim_gridvars,griddims=untrim_griddims)
                UNTRIMSpatial.__init__(self, path)
                startvar = 'Mesh2_face_depth'

            # Populate the drop down menus
            vnames = self.listCoordVars()
            self.variable_list.SetItems(vnames)

            # Update the time drop down list
            if 'time' in self.__dict__:
                self.timestr = [
                    datetime.strftime(tt, '%d-%b-%Y %H:%M:%S')
                    for tt in self.time
                ]
            else:
                # Assume that it is a harmonic-type file
                self.timestr = self.nc.Constituent_Names.split()

            self.time_list.SetItems(self.timestr)

            # Draw the depth
            if startvar in vnames:
                self.variable = startvar
                self.loadData()
                self.create_figure()

    def on_load_grid(self, event):

        dlg = wx.DirDialog(self,
                           message="Open SUNTANS grid from folder...",
                           defaultPath=os.getcwd(),
                           style=wx.DD_DEFAULT_STYLE)

        if dlg.ShowModal() == wx.ID_OK:
            path = dlg.GetPath()

            # Initialise the class
            self.flash_status_message("Opening SUNTANS grid from folder: %s" %
                                      path)
            Grid.__init__(self, path)

            # Plot the Grid
            if 'collection' in self.__dict__:
                self.axes.collections.remove(self.collection)

            self.axes, self.collection = self.plotmesh(ax=self.axes,
                                                       edgecolors='y')

            # redraw the figure
            self.canvas.draw()

    def on_load_ptm(self, event):
        file_choices = "PTM NetCDF (*.nc)|*.nc|PTM Binary (*_bin.out)|*_bin.out|All Files (*.*)|*.*"

        dlg = wx.FileDialog(self,
                            message="Open PTM file...",
                            defaultDir=os.getcwd(),
                            defaultFile="",
                            wildcard=file_choices,
                            style=wx.FD_MULTIPLE)

        if dlg.ShowModal() == wx.ID_OK:
            self.plot_type = 'particles'
            path = dlg.GetPath()

            # Initialise the class
            if dlg.GetFilterIndex() == 0:  #SUNTANS
                self.flash_status_message("Opening PTM netcdf file: %s" % path)
                self.PTM = PtmNC(path)
            elif dlg.GetFilterIndex() == 1:  #PTM
                self.flash_status_message("Opening PTM binary file: %s" % path)
                self.PTM = PtmBin(path)

            self.Nt = self.PTM.nt

            # Update the time drop down list
            self.timestr = [
                datetime.strftime(tt, '%d-%b-%Y %H:%M:%S')
                for tt in self.PTM.time
            ]
            self.time_list.SetItems(self.timestr)

            # Plot the first time step
            if 'xlims' in self.__dict__:
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,xlims=self.xlims,\
                ylims=self.ylims,color=self.particlecolor,\
                fontcolor='w',markersize=self.particlesize)
            else:
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,fontcolor='w',\
                    color=self.particlecolor,markersize=self.particlesize)
            # redraw the figure
            self.canvas.draw()

    def on_show_edges(self, event):
        sender = event.GetEventObject()
        self.showedges = sender.GetValue()

        # Update the figure
        self.update_figure()

    def on_clim_check(self, event):
        sender = event.GetEventObject()
        if sender.GetValue() == True:
            self.autoclim = False
            self.update_figure()
        else:
            self.autoclim = True

    def on_climlow(self, event):
        self.clim[0] = event.GetString()
        #self.update_figure()

    def on_climhigh(self, event):
        self.clim[1] = event.GetString()
        #self.update_figure()

    def on_select_cmap(self, event):
        self.cmap = event.GetString()
        if USECMOCEAN:
            self.collection.set_cmap(getattr(cm, self.cmap))
        else:
            self.collection.set_cmap(self.cmap)

        # Update the figure
        self.update_figure()

    def on_save_fig(self, event):
        """
        Save a figure of the current scene to a file
        """
        file_choices = " (*.png)|*.png| (*.pdf)|*.pdf |(*.jpg)|*.jpg |(*.eps)|*eps "
        filters = ['.png', '.pdf', '.png', '.png']

        dlg = wx.FileDialog(self,
                            message="Save figure to file...",
                            defaultDir=os.getcwd(),
                            defaultFile="",
                            wildcard=file_choices,
                            style=wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)

        if dlg.ShowModal() == wx.ID_OK:

            path = dlg.GetPath()
            ext = filters[dlg.GetFilterIndex()]
            if ext in path:
                outfile = path
            else:
                outfile = path + ext

            self.fig.savefig(outfile)

    def on_save_anim(self, event):
        """
        Save an animation of the current scene to a file
        """
        file_choices = "Quicktime (*.mov)|*.mov| (*.gif)|*.gif| (*.avi)|*.avi |(*.mp4)|*.mp4 "
        filters = ['.mov', '.gif', '.avi', '.mp4']

        dlg = wx.FileDialog(self,
                            message="Output animation file...",
                            defaultDir=os.getcwd(),
                            defaultFile="",
                            wildcard=file_choices,
                            style=wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)

        if dlg.ShowModal() == wx.ID_OK:

            path = dlg.GetPath()
            ext = filters[dlg.GetFilterIndex()]
            if ext in path:
                outfile = path
            else:
                outfile = path + ext
            self.flash_status_message("Saving figure to file: %s" % outfile)
            self.flash_status_message("Saving animation to file: %s" % outfile)

            # Create the animation
            #self.tstep = range(self.Nt) # Use all time steps for animation
            #self.animate(cbar=self.cbar,cmap=self.cmap,\
            #    xlims=self.axes.get_xlim(),ylims=self.axes.get_ylim())
            def initanim():
                if not self.plot_type == 'particles':
                    return (self.title, self.collection)
                else:
                    return (self.PTM.title, self.PTM.p_handle)

            def updateScalar(i):
                if not self.plot_type == 'particles':
                    self.tstep = [i]
                    self.loadData()
                    self.update_figure()
                    return (self.title, self.collection)
                elif self.plot_type == 'particles':
                    self.PTM.plot(i,ax=self.axes,\
                        xlims=self.axes.get_xlim(),ylims=self.axes.get_ylim())
                    return (self.PTM.title, self.PTM.p_handle)

            self.anim = animation.FuncAnimation(self.fig, \
                updateScalar, init_func = initanim, frames=self.Nt, interval=50, blit=True)

            if ext == '.gif':
                self.anim.save(outfile, writer='imagemagick', fps=6)
            elif ext == '.mp4':
                print('Saving html5 video...')
                # Ensures html5 compatibility
                self.anim.save(outfile,writer='mencoder',fps=6,\
                    bitrate=3600,extra_args=['-ovc','x264']) # mencoder options
                #bitrate=3600,extra_args=['-vcodec','libx264'])
            else:
                self.anim.save(outfile, writer='mencoder', fps=6, bitrate=3600)

            # Return the figure back to its status
            del self.anim
            self.tstep = self.tindex
            if not self.plot_type == 'particles':
                self.loadData()
                self.update_figure()

            # Bring up a dialog box
            dlg2 = wx.MessageDialog(self, 'Animation complete.', "Done", wx.OK)
            dlg2.ShowModal()
            dlg2.Destroy()

    def on_exit(self, event):
        self.Destroy()

    def on_about(self, event):
        msg = """ SUNTANS NetCDF visualization tool

            *Author: Matt Rayson
            *Institution: Stanford University
            *Created: October 2013
        """
        dlg = wx.MessageDialog(self, msg, "About", wx.OK)
        dlg.ShowModal()
        dlg.Destroy()

    def on_count_cells(self, eveny):
        msg = "Total 3-D grid cells = %d" % (self.count_cells())
        dlg = wx.MessageDialog(self, msg, "No. cells", wx.OK)
        dlg.ShowModal()
        dlg.Destroy()

    def on_overlay_bathy(self, event):
        # Plot depth contours
        print('Plotting contours...')
        self.contourf(z=self.dv, clevs=self.depthlevs,\
            ax=self.axes,\
            filled=False, colors='0.5', linewidths=0.5, zorder=1e6)
        print('Done')

    def on_plot_gridstat(self, event):
        """
        Plot the grid size histogram in a new figure
        """
        matplotlib.pyplot.figure()
        self.plothist()
        matplotlib.pyplot.show()

    def create_status_bar(self):
        self.statusbar = self.CreateStatusBar()

    def flash_status_message(self, msg, flash_len_ms=1500):
        self.statusbar.SetStatusText(msg)
        self.timeroff = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.on_flash_status_off, self.timeroff)
        self.timeroff.Start(flash_len_ms, oneShot=True)

    def on_flash_status_off(self, event):
        self.statusbar.SetStatusText('')
Example #4
0
class SunPlotPy(wx.Frame, Spatial, Grid ):
    """ 
    The main frame of the application
    """
    title = 'sunplot(py)'

    # Plotting options
    autoclim=True
    showedges=False
    bgcolor='k'
    textcolor='w'
    cmap='RdBu'
    particlesize = 1.8
    particlecolor = 'm'

    # other flags
    collectiontype='cells'
    oldcollectiontype='cells'

    # 
    tindex=0 
    depthlevs = [0., 10., 100., 200., 300., 400., 500.,\
        1000.,2000.,3000.,4000.,5000]

    _FillValue=999999
    
    def __init__(self):
        wx.Frame.__init__(self, None, -1, self.title)
        
        self.create_menu()
        self.create_status_bar()
        self.create_main_panel()
        
        #self.draw_figure()

    def create_menu(self):
        self.menubar = wx.MenuBar()
        
        ###
        # File Menu
        ###
        menu_file = wx.Menu()
        # Load a hydro output file
        m_expt = menu_file.Append(-1, "&Open file\tCtrl-O", "Open netcdf file")
        self.Bind(wx.EVT_MENU, self.on_open_file, m_expt)

        # Load a grid file
        m_grid = menu_file.Append(-1, "&Load grid\tCtrl-G", "Load SUNTANS grid from folder")
        self.Bind(wx.EVT_MENU, self.on_load_grid, m_grid)

        # Load a particle file
        m_part = menu_file.Append(-1, "&Load PTM file\tCtrl-Shift-P", "Load a PTM file")
        self.Bind(wx.EVT_MENU, self.on_load_ptm, m_part)

        # Save current scene as an animation
        m_anim = menu_file.Append(-1,"&Save animation of current scene\tCtrl-S","Save animation")
        self.Bind(wx.EVT_MENU, self.on_save_anim, m_anim)

        # Save the current figure
        m_prin = menu_file.Append(-1,"&Print current scene\tCtrl-P","Save figure")
        self.Bind(wx.EVT_MENU, self.on_save_fig, m_prin)



        menu_file.AppendSeparator()
        # Exit
        m_exit = menu_file.Append(-1, "E&xit\tCtrl-X", "Exit")
        self.Bind(wx.EVT_MENU, self.on_exit, m_exit)

        ###
        # Tools menu
        ###
        menu_tools = wx.Menu()
        m_gridstat = menu_tools.Append(-1, "&Plot grid size statistics", "SUNTANS grid size")
        self.Bind(wx.EVT_MENU, self.on_plot_gridstat, m_gridstat)

        m_countcells = menu_tools.Append(-1, "&Count # grid cells", "Grid cell count")
        self.Bind(wx.EVT_MENU, self.on_count_cells, m_countcells)

        m_overlaybathy = menu_tools.Append(-1, "&Overlay depth contours", "Depth overlay")
        self.Bind(wx.EVT_MENU, self.on_overlay_bathy, m_overlaybathy)

        
        ###
        # Help Menu
        ###
        menu_help = wx.Menu()
        m_about = menu_help.Append(-1, "&About\tF1", "About the demo")
        self.Bind(wx.EVT_MENU, self.on_about, m_about)
        
        
        # Add all of the menu bars
        self.menubar.Append(menu_file, "&File")
        self.menubar.Append(menu_tools, "&Tools")
        self.menubar.Append(menu_help, "&Help")
        self.SetMenuBar(self.menubar)

    def create_main_panel(self):
        """ Creates the main panel with all the controls on it:
             * mpl canvas 
             * mpl navigation toolbar
             * Control panel for interaction
        """
        self.panel = wx.Panel(self)
        
        # Create the mpl Figure and FigCanvas objects. 
        # 5x4 inches, 100 dots-per-inch
        #
        self.dpi = 100
        #self.fig = Figure((7.0, 6.0), dpi=self.dpi,facecolor=self.bgcolor)
        self.fig = Figure((7.0, 6.0), dpi=self.dpi)
        self.canvas = FigCanvas(self.panel, -1, self.fig)
        
        
        # Since we have only one plot, we can use add_axes 
        # instead of add_subplot, but then the subplot
        # configuration tool in the navigation toolbar wouldn't
        # work.
        #
        self.axes = self.fig.add_subplot(111)
        #SetAxColor(self.axes,self.textcolor,self.bgcolor)
        
        # Bind the 'pick' event for clicking on one of the bars
        #
        #self.canvas.mpl_connect('pick_event', self.on_pick)
        
        ########
        # Create widgets
        ########
        self.variable_list = wx.ComboBox(
            self.panel, 
            size=(200,-1),
            choices=['Select a variable...'],
            style=wx.CB_READONLY)
        self.variable_list.Bind(wx.EVT_COMBOBOX, self.on_select_variable)
        
        self.time_list = wx.ComboBox(
            self.panel, 
            size=(200,-1),
            choices=['Select a time step...'],
            style=wx.CB_READONLY)
        self.time_list.Bind(wx.EVT_COMBOBOX, self.on_select_time)

        self.depthlayer_list = wx.ComboBox(
            self.panel, 
            size=(200,-1),
            choices=['Select a vertical layer...'],
            style=wx.CB_READONLY)
        self.depthlayer_list.Bind(wx.EVT_COMBOBOX, self.on_select_depth)

        self.show_edge_check = wx.CheckBox(self.panel, -1, 
            "Show Edges",
            style=wx.ALIGN_RIGHT)
        self.show_edge_check.Bind(wx.EVT_CHECKBOX, self.on_show_edges)

        if USECMOCEAN:
            cmaps=[]
            for cmap in cm.cmapnames:
                cmaps.append(cmap)
                cmaps.append(cmap+'_r') # Add all reverse map options
        else:
            # Use matplotlib standard
            cmaps = matplotlib.cm.datad.keys()

        cmaps.sort()
        self.colormap_list = wx.ComboBox(
            self.panel, 
            size=(100,-1),
            choices=cmaps,
            style=wx.CB_READONLY)
        self.colormap_list.Bind(wx.EVT_COMBOBOX, self.on_select_cmap)
        self.colormap_label = wx.StaticText(self.panel, -1,"Colormap:")

        self.clim_check = wx.CheckBox(self.panel, -1, 
            "Manual color limits ",
            style=wx.ALIGN_RIGHT)
        self.clim_check.Bind(wx.EVT_CHECKBOX, self.on_clim_check)

        self.climlow = wx.TextCtrl(
            self.panel, 
            size=(100,-1),
            style=wx.TE_PROCESS_ENTER)
        self.climlow.Bind(wx.EVT_TEXT_ENTER, self.on_climlow)
        
        self.climhigh = wx.TextCtrl(
            self.panel, 
            size=(100,-1),
            style=wx.TE_PROCESS_ENTER)
        self.climhigh.Bind(wx.EVT_TEXT_ENTER, self.on_climhigh)
 


        # Labels
        self.variable_label = wx.StaticText(self.panel, -1,"Variable:",size=(200,-1))
        self.time_label = wx.StaticText(self.panel, -1,"Time step:",size=(200,-1))
        self.depth_label = wx.StaticText(self.panel, -1,"Vertical level:",size=(200,-1))


        # Create the navigation toolbar, tied to the canvas
        #
        self.toolbar = NavigationToolbar(self.canvas)
        #self.toolbar.toolitems[8][3]='my_save_fig'

        #def my_save_fig(self,*args):
        #    print 'saving figure'
        #    return "break"

        
        #########
        # Layout with box sizers
        #########
        
        self.vbox = wx.BoxSizer(wx.VERTICAL)
        self.vbox.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
        self.vbox.Add(self.toolbar, 0, wx.EXPAND)

        self.vbox.AddSpacer(10)
        #self.vbox.Add((-1,25))

        flags = wx.ALIGN_LEFT | wx.ALL | wx.ALIGN_CENTER_VERTICAL

        self.hbox0 = wx.BoxSizer(wx.HORIZONTAL)
        self.hbox0.Add(self.show_edge_check, 0, border=10, flag=flags)
        self.hbox0.Add(self.colormap_label, 0, border=10, flag=flags)
        self.hbox0.Add(self.colormap_list, 0, border=10, flag=flags)
        self.hbox0.Add(self.clim_check, 0, border=10, flag=flags)
        self.hbox0.Add(self.climlow, 0, border=10, flag=flags)
        self.hbox0.Add(self.climhigh, 0, border=10, flag=flags)

        self.vbox.AddSpacer(5)
        self.hbox1 = wx.BoxSizer(wx.HORIZONTAL)
        self.hbox1.Add(self.variable_label, 0, border=10, flag=flags)
        self.hbox1.Add(self.time_label, 0, border=10, flag=flags)
        self.hbox1.Add(self.depth_label, 0, border=10, flag=flags)

        self.vbox.AddSpacer(5)
        self.hbox2 = wx.BoxSizer(wx.HORIZONTAL)
        self.hbox2.Add(self.variable_list, 0, border=10, flag=flags)
        self.hbox2.Add(self.time_list, 0, border=10, flag=flags)
        self.hbox2.Add(self.depthlayer_list, 0, border=10, flag=flags)
       
        self.vbox.Add(self.hbox1, 0, flag = wx.ALIGN_LEFT | wx.TOP)
        self.vbox.Add(self.hbox2, 0, flag = wx.ALIGN_LEFT | wx.TOP)
        self.vbox.Add(self.hbox0, 0, flag = wx.ALIGN_LEFT | wx.TOP)
        
        self.panel.SetSizer(self.vbox)
        self.vbox.Fit(self)
    
    ##########
    # Event functions
    ##########

    def create_figure(self):
        """ 
        Creates the figure
        """
        # Find the colorbar limits if unspecified
        if self.autoclim:
            self.clim = [self.data.min(),self.data.max()]
            self.climlow.SetValue('%3.1f'%self.clim[0])
            self.climhigh.SetValue('%3.1f'%self.clim[1])
         
        if self.__dict__.has_key('collection'):
            #self.collection.remove()
            self.axes.collections.remove(self.collection)
        else:
            # First call - set the axes limits
            self.axes.set_aspect('equal')
            self.axes.set_xlim(self.xlims)
            self.axes.set_ylim(self.ylims)
 

        if self.collectiontype=='cells':
            self.collection = PolyCollection(self.xy,cmap=self.cmap)
            self.collection.set_array(np.array(self.data[:]))
            if not self.showedges:
                self.collection.set_edgecolors(self.collection.to_rgba(np.array((self.data[:])))) 
        elif self.collectiontype=='edges':
            xylines = [self.xp[self.edges],self.yp[self.edges]]
            linesc = [zip(xylines[0][ii,:],xylines[1][ii,:]) for ii in range(self.Ne)]
            self.collection = LineCollection(linesc,array=np.array(self.data[:]),cmap=self.cmap)

        self.collection.set_clim(vmin=self.clim[0],vmax=self.clim[1])

        self.axes.add_collection(self.collection)    
        self.title=self.axes.set_title(self.genTitle(),color=self.textcolor)
        self.axes.set_xlabel('Easting [m]')
        self.axes.set_ylabel('Northing [m]')

        # create a colorbar

        if not self.__dict__.has_key('cbar'):
            self.cbar = self.fig.colorbar(self.collection)
            #SetAxColor(self.cbar.ax.axes,self.textcolor,self.bgcolor)
        else:
            #pass
            print 'Updating colorbar...'
            #self.cbar.check_update(self.collection)
            self.cbar.on_mappable_changed(self.collection)

        self.canvas.draw()
   
    def update_figure(self):
        if self.autoclim:
            self.clim = [self.data.min(),self.data.max()]
            self.climlow.SetValue('%3.1f'%self.clim[0])
            self.climhigh.SetValue('%3.1f'%self.clim[1])
        else:
            self.clim = [float(self.climlow.GetValue()),\
                float(self.climhigh.GetValue())]
 
        # check whether it is cell or edge type
        if self.hasDim(self.variable,self.griddims['Ne']):
            self.collectiontype='edges'
        elif self.hasDim(self.variable,self.griddims['Nc']):
            self.collectiontype='cells'

        # Create a new figure if the variable has gone from cell to edge of vice
        # versa
        if not self.collectiontype==self.oldcollectiontype:
            self.create_figure()
            self.oldcollectiontype=self.collectiontype

        self.collection.set_array(np.array(self.data[:]))
        self.collection.set_clim(vmin=self.clim[0],vmax=self.clim[1])

        # Cells only
        if self.collectiontype=='cells':
            if not self.showedges:
                self.collection.set_edgecolors(self.collection.to_rgba(np.array((self.data[:])))) 
            else:
                self.collection.set_edgecolors('k')
                self.collection.set_linewidths(0.2)

        # Update the title
        self.title=self.axes.set_title(self.genTitle(),color=self.textcolor)

        #Update the colorbar
        self.cbar.update_normal(self.collection)

        # redraw the figure
        self.canvas.draw()
    
    def on_pick(self, event):
        # The event received here is of the type
        # matplotlib.backend_bases.PickEvent
        #
        # It carries lots of information, of which we're using
        # only a small amount here.
        # 
        box_points = event.artist.get_bbox().get_points()
        msg = "You've clicked on a bar with coords:\n %s" % box_points
        
        dlg = wx.MessageDialog(
            self, 
            msg, 
            "Click!",
            wx.OK | wx.ICON_INFORMATION)

        dlg.ShowModal() 
        dlg.Destroy()        
    
    def on_select_variable(self, event):
        vname = event.GetString()
        self.flash_status_message("Selecting variable: %s"%vname)
        # update the spatial object and load the data
        self.variable = vname
        self.loadData(variable=self.variable)

        # Check if the variable has a depth coordinate
        depthstr = ['']
        # If so populate the vertical layer box
        if self.hasDim(self.variable,self.griddims['Nk']):
            depthstr = ['%3.1f'%self.z_r[k] for k in range(self.Nkmax)]
            depthstr += ['surface','seabed']

        elif self.hasDim(self.variable,'Nkw'):
            depthstr = ['%3.1f'%self.z_w[k] for k in range(self.Nkmax+1)]

        self.depthlayer_list.SetItems(depthstr)

        # Update the plot
        self.update_figure()



    def on_select_time(self, event):
        self.tindex = event.GetSelection()
        # Update the object time index and reload the data
        if self.plot_type=='hydro':
            if not self.tstep==self.tindex:
                self.tstep=self.tindex
                self.loadData()
                self.flash_status_message("Selecting variable: %s..."%event.GetString())

                # Update the plot
                self.update_figure()
        elif self.plot_type=='particles':
            self.PTM.plot(self.tindex,ax=self.axes,\
                xlims=self.axes.get_xlim(),ylims=self.axes.get_ylim())
        
            self.canvas.draw()


    def on_select_depth(self, event):
        kindex = event.GetSelection()
        if not self.klayer[0]==kindex:
            # Check if its the seabed or surface value
            if kindex>=self.Nkmax:
                kindex=event.GetString()
            self.klayer = [kindex]
            self.loadData()       
            self.flash_status_message("Selecting depth: %s..."%event.GetString())

            # Update the plot
            self.update_figure()

    def on_open_file(self, event):
        file_choices = "SUNTANS NetCDF (*.nc)|*.nc*|UnTRIM NetCDF (*.nc)|*.nc*|All Files (*.*)|*.*"
        
        dlg = wx.FileDialog(
            self, 
            message="Open SUNTANS file...",
            defaultDir=os.getcwd(),
            defaultFile="",
            wildcard=file_choices,
            style= wx.FD_MULTIPLE)
        
        if dlg.ShowModal() == wx.ID_OK:
            self.plot_type='hydro'

            path = dlg.GetPaths()

            # Initialise the class
            if dlg.GetFilterIndex() == 0 or dlg.GetFilterIndex() > 1: #SUNTANS
                self.flash_status_message("Opening SUNTANS file: %s" % path)
		try:
		    Spatial.__init__(self, path, _FillValue=self._FillValue)
		except:
		    Spatial.__init__(self, path, _FillValue=-999999)
                startvar='dv'
            if dlg.GetFilterIndex()==1: #UnTRIM
                self.flash_status_message("Opening UnTRIMS file: %s" % path)
                #Spatial.__init__(self,path,gridvars=untrim_gridvars,griddims=untrim_griddims)
                UNTRIMSpatial.__init__(self,path)
                startvar='Mesh2_face_depth'
            
            # Populate the drop down menus
            vnames = self.listCoordVars()
            self.variable_list.SetItems(vnames)
            
            # Update the time drop down list
            if self.__dict__.has_key('time'):
                self.timestr = [datetime.strftime(tt,'%d-%b-%Y %H:%M:%S') for tt in self.time]
            else:
                # Assume that it is a harmonic-type file
                self.timestr = self.nc.Constituent_Names.split()

            self.time_list.SetItems(self.timestr)

            # Draw the depth
            if startvar in vnames:
                self.variable=startvar
                self.loadData()
                self.create_figure()

    def on_load_grid(self, event):
        
        dlg = wx.DirDialog(
            self, 
            message="Open SUNTANS grid from folder...",
            defaultPath=os.getcwd(),
            style= wx.DD_DEFAULT_STYLE)
        
        if dlg.ShowModal() == wx.ID_OK:
            path = dlg.GetPath()

            # Initialise the class
            self.flash_status_message("Opening SUNTANS grid from folder: %s" % path)
            Grid.__init__(self,path)

            # Plot the Grid
            if self.__dict__.has_key('collection'):
                self.axes.collections.remove(self.collection)

            self.axes,self.collection = self.plotmesh(ax=self.axes,edgecolors='y')

            # redraw the figure
            self.canvas.draw()

    def on_load_ptm(self, event):
        file_choices = "PTM NetCDF (*.nc)|*.nc|PTM Binary (*_bin.out)|*_bin.out|All Files (*.*)|*.*"
        
        dlg = wx.FileDialog(
            self, 
            message="Open PTM file...",
            defaultDir=os.getcwd(),
            defaultFile="",
            wildcard=file_choices,
            style= wx.FD_MULTIPLE)
        
        if dlg.ShowModal() == wx.ID_OK:
            self.plot_type = 'particles'
            path = dlg.GetPath()

            # Initialise the class
            if dlg.GetFilterIndex() == 0: #SUNTANS
                self.flash_status_message("Opening PTM netcdf file: %s" % path)
                self.PTM = PtmNC(path)
            elif dlg.GetFilterIndex() == 1: #PTM
                self.flash_status_message("Opening PTM binary file: %s" % path)
                self.PTM = PtmBin(path)

            self.Nt = self.PTM.nt
            
            # Update the time drop down list
            self.timestr = [datetime.strftime(tt,'%d-%b-%Y %H:%M:%S') for tt in self.PTM.time]
            self.time_list.SetItems(self.timestr)

            # Plot the first time step
            if self.__dict__.has_key('xlims'):
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,xlims=self.xlims,\
                ylims=self.ylims,color=self.particlecolor,\
                fontcolor='w',markersize=self.particlesize)
            else:
                self.PTM.plot(self.PTM.nt-1,ax=self.axes,fontcolor='w',\
                    color=self.particlecolor,markersize=self.particlesize)
            # redraw the figure
            self.canvas.draw()

        
    def on_show_edges(self,event):
        sender=event.GetEventObject()
        self.showedges = sender.GetValue()

        # Update the figure
        self.update_figure()

    def on_clim_check(self,event):
        sender=event.GetEventObject()
        if sender.GetValue() == True:
            self.autoclim=False
            self.update_figure()
        else:
            self.autoclim=True
       

    def on_climlow(self,event):
        self.clim[0] = event.GetString()
        #self.update_figure()

    def on_climhigh(self,event):
        self.clim[1] = event.GetString()
        #self.update_figure()

    def on_select_cmap(self,event):
        self.cmap=event.GetString()
        if USECMOCEAN:
            self.collection.set_cmap(getattr(cm,self.cmap))
        else:
            self.collection.set_cmap(self.cmap)

        # Update the figure
        self.update_figure()

    def on_save_fig(self,event):
        """
        Save a figure of the current scene to a file
        """
        file_choices = " (*.png)|*.png| (*.pdf)|*.pdf |(*.jpg)|*.jpg |(*.eps)|*eps "
        filters=['.png','.pdf','.png','.png']

        
        dlg = wx.FileDialog(
            self, 
            message="Save figure to file...",
            defaultDir=os.getcwd(),
            defaultFile="",
            wildcard=file_choices,
            style= wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)

        if dlg.ShowModal() == wx.ID_OK:

            path = dlg.GetPath()
            ext = filters[dlg.GetFilterIndex()]
            if ext in path:
                outfile=path
            else:
                outfile = path+ext

            self.fig.savefig(outfile)

            


    def on_save_anim(self,event):
        """
        Save an animation of the current scene to a file
        """
        file_choices = "Quicktime (*.mov)|*.mov| (*.gif)|*.gif| (*.avi)|*.avi |(*.mp4)|*.mp4 "
        filters=['.mov','.gif','.avi','.mp4']

        
        dlg = wx.FileDialog(
            self, 
            message="Output animation file...",
            defaultDir=os.getcwd(),
            defaultFile="",
            wildcard=file_choices,
            style= wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)

        if dlg.ShowModal() == wx.ID_OK:

            path = dlg.GetPath()
            ext = filters[dlg.GetFilterIndex()]
            if ext in path:
                outfile=path
            else:
                outfile = path+ext
            self.flash_status_message("Saving figure to file: %s" %outfile)
            self.flash_status_message("Saving animation to file: %s" %outfile)

            # Create the animation
            #self.tstep = range(self.Nt) # Use all time steps for animation
            #self.animate(cbar=self.cbar,cmap=self.cmap,\
            #    xlims=self.axes.get_xlim(),ylims=self.axes.get_ylim())
            def initanim():
                if not self.plot_type=='particles':
                    return (self.title, self.collection)
                else:
                    return (self.PTM.title,self.PTM.p_handle)

            def updateScalar(i):
                if not self.plot_type=='particles':
                    self.tstep=[i]
                    self.loadData()
                    self.update_figure()
                    return (self.title,self.collection)
                elif self.plot_type=='particles':
                    self.PTM.plot(i,ax=self.axes,\
                        xlims=self.axes.get_xlim(),ylims=self.axes.get_ylim())
                    return (self.PTM.title,self.PTM.p_handle)

            self.anim = animation.FuncAnimation(self.fig, \
                updateScalar, init_func = initanim, frames=self.Nt, interval=50, blit=True)

            if ext=='.gif':
                self.anim.save(outfile,writer='imagemagick',fps=6)
            elif ext=='.mp4':
                print 'Saving html5 video...'
                # Ensures html5 compatibility
                self.anim.save(outfile,writer='mencoder',fps=6,\
                    bitrate=3600,extra_args=['-ovc','x264']) # mencoder options
                    #bitrate=3600,extra_args=['-vcodec','libx264'])
            else:
                self.anim.save(outfile,writer='mencoder',fps=6,bitrate=3600)

            # Return the figure back to its status
            del self.anim
            self.tstep=self.tindex
            if not self.plot_type=='particles':
                self.loadData()
                self.update_figure()

            # Bring up a dialog box
            dlg2= wx.MessageDialog(self, 'Animation complete.', "Done", wx.OK)
            dlg2.ShowModal()
            dlg2.Destroy()

    def on_exit(self, event):
        self.Destroy()
        
    def on_about(self, event):
        msg = """ SUNTANS NetCDF visualization tool
        
            *Author: Matt Rayson
            *Institution: Stanford University
            *Created: October 2013
        """
        dlg = wx.MessageDialog(self, msg, "About", wx.OK)
        dlg.ShowModal()
        dlg.Destroy()

    def on_count_cells(self,eveny):
        msg = "Total 3-D grid cells = %d"%(self.count_cells())
        dlg = wx.MessageDialog(self, msg, "No. cells", wx.OK)
        dlg.ShowModal()
        dlg.Destroy()

    def on_overlay_bathy(self,event):
        # Plot depth contours
        print 'Plotting contours...'
        self.contourf(z=self.dv, clevs=self.depthlevs,\
            ax=self.axes,\
            filled=False, colors='0.5', linewidths=0.5, zorder=1e6)
        print 'Done'
   
    def on_plot_gridstat(self, event):
        """
        Plot the grid size histogram in a new figure
        """
        matplotlib.pyplot.figure()
        self.plothist()
        matplotlib.pyplot.show()


    def create_status_bar(self):
        self.statusbar = self.CreateStatusBar()

    def flash_status_message(self, msg, flash_len_ms=1500):
        self.statusbar.SetStatusText(msg)
        self.timeroff = wx.Timer(self)
        self.Bind(
            wx.EVT_TIMER, 
            self.on_flash_status_off, 
            self.timeroff)
        self.timeroff.Start(flash_len_ms, oneShot=True)
    
    def on_flash_status_off(self, event):
        self.statusbar.SetStatusText('')