Exemple #1
0
    def expose(self, widget, event):

        cr = widget.window.cairo_create()

        environ["GKS_WSTYPE"] = "142"
        pc = PyCairoContext.from_address(id(cr))
        environ['GKSconid'] = "%lu" % pc.ctx

        cr.move_to(15, 15)
        cr.set_font_size(14)
        cr.show_text("Contour Plot using Gtk ...")

        seed(0)
        xd = uniform(-2, 2, 100)
        yd = uniform(-2, 2, 100)
        zd = xd * np.exp(-xd**2 - yd**2)

        gr.setviewport(0.15, 0.95, 0.1, 0.9)
        gr.setwindow(-2, 2, -2, 2)
        gr.setspace(-0.5, 0.5, 0, 90)
        gr.setmarkersize(1)
        gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
        gr.setcharheight(0.024)
        gr.settextalign(2, 0)
        gr.settextfontprec(3, 0)

        x, y, z = gr.gridit(xd, yd, zd, 200, 200)
        h = np.linspace(-0.5, 0.5, 20)
        gr.surface(x, y, z, 5)
        gr.contour(x, y, h, z, 0)
        gr.polymarker(xd, yd)
        gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01)

        gr.updatews()
Exemple #2
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def surface(px, py, pz, option=0):
    """
    Create a surface plot with gr3 and draw it with gks as cellarray

    **Parameters:**

        `nx` :     number of points in x-direction

        `ny` :     number of points in y-direction

        `px` :     an array containing the x-coordinates

        `py` :     an array containing the y-coordinates

        `pz` :     an array of length nx * ny containing the z-coordinates

        `option` : see the option parameter of gr_surface. OPTION_COLORED_MESH and OPTION_Z_SHADED_MESH are supported.
    """
    if option in (gr.OPTION_Z_SHADED_MESH, gr.OPTION_COLORED_MESH):
        nx = len(px)
        ny = len(py)
        px = floatarray(px, copy=False)
        py = floatarray(py, copy=False)
        pz = floatarray(pz, copy=False)
        _gr3.gr3_surface(c_int(nx), c_int(ny), px.data, py.data, pz.data,
                         c_int(option))
    else:
        gr.surface(px, py, pz, option)
    return
Exemple #3
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def surface(px, py, pz, option=0):
    """
    Create a surface plot with gr3 and draw it with gks as cellarray

    **Parameters:**

        `nx` :     number of points in x-direction

        `ny` :     number of points in y-direction

        `px` :     an array containing the x-coordinates

        `py` :     an array containing the y-coordinates

        `pz` :     an array of length nx * ny containing the z-coordinates

        `option` : see the option parameter of gr_surface. OPTION_COLORED_MESH and OPTION_Z_SHADED_MESH are supported.
    """
    if option in (gr.OPTION_Z_SHADED_MESH, gr.OPTION_COLORED_MESH):
        nx = len(px)
        ny = len(py)
        px = floatarray(px, copy=False)
        py = floatarray(py, copy=False)
        pz = floatarray(pz, copy=False)
        _gr3.gr3_surface(c_int(nx), c_int(ny),
                         px.data,
                         py.data,
                         pz.data,
                         c_int(option))
    else:
        gr.surface(px, py, pz, option)
    return
Exemple #4
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    def draw(self, event):
        self.bm = wx.EmptyBitmap(self.GetSizeTuple()[0], self.GetSizeTuple()[1])
        dc = wx.MemoryDC(self.bm)
        
        os.environ['GKSconid'] = "%x!%x" % (get_address(repr(self)), get_address(repr(dc)))
        
        dc.SetBackground(wx.WHITE_BRUSH)
        dc.Clear()
        
        dc.DrawText("Surface Plot using wxWidgets ...", 15, 15)
        
        x = range(1, 481)
        y = range(1, 481)
        w, h, d = gr.readimage(
            os.path.join(os.path.dirname(os.path.realpath(__file__)),
                         'surf.png'))
        z = map(lambda x: x & 0xff, d)

        gr.setviewport(0, 1, 0, 1)
        gr.setwindow(1, 480, 1, 480)
        gr.setspace(1, 1000, 30, 80)
        gr.setcolormap(3)
        gr.surface(x, y, z, 6)
        gr.contour(x, y, range(1), z, 0)
        gr.updatews()
        
        self.Refresh()
        event.Skip()
Exemple #5
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    def draw(self):
        if not self._draw_graphics:
            return

        x = range(0, 128)
        y = range(0, 128)
        z = readfile(os.path.join(os.path.dirname(os.path.realpath(__file__)), "kws.dat"), separator="$")
        zrange = max(z) - min(z)
        h = [min(z) + i * 0.025 * zrange for i in range(0, 40)]

        gr.setviewport(0.075, 0.95, 0.075, 0.95)
        gr.setwindow(1, 128, 1, 128)
        gr.setspace(min(z), max(z), 0, 90)
        gr.setcharheight(0.018)
        gr.setcolormap(-3)
        gr.surface(x, y, z, 5)
        gr.contour(x, y, h, z, -1)
        gr.axes(5, 5, 1, 1, 2, 2, 0.0075)
    def draw(self):
        if not self._draw_graphics:
            return

        x = range(0, 128)
        y = range(0, 128)
        z = readfile(os.path.join(os.path.dirname(os.path.realpath(__file__)),
                                  "kws.dat"), separator='$')
        zrange = max(z) - min(z)
        h = [min(z) + i * 0.025 * zrange for i in range(0, 40)]

        gr.setviewport(0.075, 0.95, 0.075, 0.95)
        gr.setwindow(1, 128, 1, 128)
        gr.setspace(min(z), max(z), 0, 90)
        gr.setcharheight(0.018)
        gr.setcolormap(-3)
        gr.surface(x, y, z, 5)
        gr.contour(x, y, h, z, -1)
        gr.axes(5, 5, 1, 1, 2, 2, 0.0075)
Exemple #7
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"""
Create a contour plot of irregular distributed data
"""

from numpy.random import uniform, seed
import numpy as np
import gr

seed(0)
xd = uniform(-2, 2, 100)
yd = uniform(-2, 2, 100)
zd = xd * np.exp(-xd ** 2 - yd ** 2)

gr.setviewport(0.1, 0.95, 0.1, 0.95)
gr.setwindow(-2, 2, -2, 2)
gr.setspace(-0.5, 0.5, 0, 90)
gr.setmarkersize(1)
gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
gr.setcharheight(0.024)
gr.settextalign(2, 0)
gr.settextfontprec(3, 0)

x, y, z = gr.gridit(xd, yd, zd, 200, 200)
h = np.linspace(-0.5, 0.5, 20)
gr.surface(x, y, z, 5)
gr.contour(x, y, h, z, 0)
gr.polymarker(xd, yd)
gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01)

gr.updatews()
Exemple #8
0
Fichier : mlab.py Projet : j-fu/gr
def _plot_data(**kwargs):
    global _plt
    _plt.kwargs.update(kwargs)
    if not _plt.args:
        return
    kind = _plt.kwargs.get('kind', 'line')
    if _plt.kwargs['clear']:
        gr.clearws()
    if kind in ('imshow', 'isosurface'):
        _set_viewport(kind, _plt.kwargs['subplot'])
    elif not _plt.kwargs['ax']:
        _set_viewport(kind, _plt.kwargs['subplot'])
        _set_window(kind)
        _draw_axes(kind)

    gr.setcolormap(_plt.kwargs.get('colormap', gr.COLORMAP_COOLWARM))
    gr.uselinespec(" ")
    for x, y, z, c, spec in _plt.args:
        gr.savestate()
        if 'alpha' in _plt.kwargs:
            gr.settransparency(_plt.kwargs['alpha'])
        if kind == 'line':
            mask = gr.uselinespec(spec)
            if mask in (0, 1, 3, 4, 5):
                gr.polyline(x, y)
            if mask & 2:
                gr.polymarker(x, y)
        elif kind == 'scatter':
            gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
            if z is not None or c is not None:
                if c is not None:
                    c_min = c.min()
                    c_ptp = c.ptp()
                for i in range(len(x)):
                    if z is not None:
                        gr.setmarkersize(z[i] / 100.0)
                    if c is not None:
                        c_index = 1000 + int(255 * (c[i]-c_min)/c_ptp)
                        gr.setmarkercolorind(c_index)
                    gr.polymarker([x[i]], [y[i]])
            else:
                gr.polymarker(x, y)
        elif kind == 'stem':
            gr.setlinecolorind(1)
            gr.polyline(_plt.kwargs['window'][:2], [0, 0])
            gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
            gr.uselinespec(spec)
            for xi, yi in zip(x, y):
                gr.polyline([xi, xi], [0, yi])
            gr.polymarker(x, y)
        elif kind == 'hist':
            y_min = _plt.kwargs['window'][2]
            for i in range(1, len(y)):
                gr.setfillcolorind(989)
                gr.setfillintstyle(gr.INTSTYLE_SOLID)
                gr.fillrect(x[i-1], x[i], y_min, y[i])
                gr.setfillcolorind(1)
                gr.setfillintstyle(gr.INTSTYLE_HOLLOW)
                gr.fillrect(x[i-1], x[i], y_min, y[i])
        elif kind == 'contour':
            z_min, z_max = _plt.kwargs['zrange']
            gr.setspace(z_min, z_max, 0, 90)
            h = [z_min + i/19*(z_max-z_min) for i in range(20)]
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
            z.shape = np.prod(z.shape)
            gr.contour(x, y, h, z, 1000)
            _colorbar(0, 20)
        elif kind == 'contourf':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
                z.shape = (200, 200)
            if _plt.kwargs['scale'] & gr.OPTION_Z_LOG != 0:
                z = np.log(z)
            width, height = z.shape
            data = np.array(1000+(z-z.min()) / z.ptp() * 255, np.int32)
            x_min, x_max = _plt.kwargs['xrange']
            y_min, y_max = _plt.kwargs['yrange']
            gr.cellarray(x_min, x_max, y_max, y_min, width, height, data)
            _colorbar()
        elif kind == 'wireframe':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 50, 50)
            gr.setfillcolorind(0)
            z.shape = np.prod(z.shape)
            gr.surface(x, y, z, gr.OPTION_FILLED_MESH)
            _draw_axes(kind, 2)

        elif kind == 'surface':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
            z.shape = np.prod(z.shape)
            if _plt.kwargs.get('accelerate', True):
                gr3.surface(x, y, z, gr.OPTION_COLORED_MESH)
            else:
                gr.surface(x, y, z, gr.OPTION_COLORED_MESH)
            _draw_axes(kind, 2)
            _colorbar(0.05)
        elif kind == 'plot3':
            gr.polyline3d(x, y, z)
            _draw_axes(kind, 2)
        elif kind == 'scatter3':
            gr.polymarker3d(x, y, z)
            _draw_axes(kind, 2)
        elif kind == 'imshow':
            _plot_img(z)
        elif kind == 'isosurface':
            _plot_iso(z)
        gr.restorestate()
    if kind in ('line', 'scatter', 'stem') and 'labels' in _plt.kwargs:
        _draw_legend()

    if _plt.kwargs['update']:
        gr.updatews()
        if gr.isinline():
            return gr.show()
Exemple #9
0
#!/usr/bin/env python
"""
Create a contour plot of irregular distributed data
"""

import numpy as np
import gr

np.random.seed(0)
xd = np.random.uniform(-2, 2, 100)
yd = np.random.uniform(-2, 2, 100)
zd = xd * np.exp(-xd**2 - yd**2)

gr.setviewport(0.1, 0.95, 0.1, 0.95)
gr.setwindow(-2, 2, -2, 2)
gr.setspace(-0.5, 0.5, 0, 90)
gr.setmarkersize(1)
gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
gr.setcharheight(0.024)
gr.settextalign(2, 0)
gr.settextfontprec(3, 0)

x, y, z = gr.gridit(xd, yd, zd, 200, 200)
h = np.linspace(-0.5, 0.5, 20)
gr.surface(x, y, z, 5)
gr.contour(x, y, h, z, 0)
gr.polymarker(xd, yd)
gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01)

gr.updatews()
Exemple #10
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def _plot_data(**kwargs):
    global _plt
    _plt.kwargs.update(kwargs)
    if not _plt.args:
        return
    kind = _plt.kwargs.get('kind', 'line')
    if _plt.kwargs['clear']:
        gr.clearws()
    if kind in ('imshow', 'isosurface'):
        _set_viewport(kind, _plt.kwargs['subplot'])
    elif not _plt.kwargs['ax']:
        _set_viewport(kind, _plt.kwargs['subplot'])
        _set_window(kind)
        if kind == 'polar':
            _draw_polar_axes()
        else:
            _draw_axes(kind)

    if 'cmap' in _plt.kwargs:
        warnings.warn('The parameter "cmap" has been replaced by "colormap". The value of "cmap" will be ignored.', stacklevel=3)
    colormap = _plt.kwargs.get('colormap', gr.COLORMAP_VIRIDIS)
    if colormap is not None:
        gr.setcolormap(colormap)
    gr.uselinespec(" ")
    for x, y, z, c, spec in _plt.args:
        gr.savestate()
        if 'alpha' in _plt.kwargs:
            gr.settransparency(_plt.kwargs['alpha'])
        if kind == 'line':
            mask = gr.uselinespec(spec)
            if mask in (0, 1, 3, 4, 5):
                gr.polyline(x, y)
            if mask & 2:
                gr.polymarker(x, y)
        elif kind == 'scatter':
            gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
            if z is not None or c is not None:
                if c is not None:
                    c_min = c.min()
                    c_ptp = c.ptp()
                for i in range(len(x)):
                    if z is not None:
                        gr.setmarkersize(z[i] / 100.0)
                    if c is not None:
                        c_index = 1000 + int(255 * (c[i]-c_min)/c_ptp)
                        gr.setmarkercolorind(c_index)
                    gr.polymarker([x[i]], [y[i]])
            else:
                gr.polymarker(x, y)
        elif kind == 'stem':
            gr.setlinecolorind(1)
            gr.polyline(_plt.kwargs['window'][:2], [0, 0])
            gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
            gr.uselinespec(spec)
            for xi, yi in zip(x, y):
                gr.polyline([xi, xi], [0, yi])
            gr.polymarker(x, y)
        elif kind == 'hist':
            y_min = _plt.kwargs['window'][2]
            for i in range(1, len(y)+1):
                gr.setfillcolorind(989)
                gr.setfillintstyle(gr.INTSTYLE_SOLID)
                gr.fillrect(x[i-1], x[i], y_min, y[i-1])
                gr.setfillcolorind(1)
                gr.setfillintstyle(gr.INTSTYLE_HOLLOW)
                gr.fillrect(x[i-1], x[i], y_min, y[i-1])
        elif kind == 'contour':
            z_min, z_max = _plt.kwargs['zrange']
            gr.setspace(z_min, z_max, 0, 90)
            h = [z_min + i/19*(z_max-z_min) for i in range(20)]
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
            z.shape = np.prod(z.shape)
            gr.contour(x, y, h, z, 1000)
            _colorbar(0, 20)
        elif kind == 'contourf':
            z_min, z_max = _plt.kwargs['zrange']
            gr.setspace(z_min, z_max, 0, 90)
            scale = _plt.kwargs['scale']
            gr.setscale(scale)
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
                z.shape = (200, 200)
            gr.surface(x, y, z, gr.OPTION_CELL_ARRAY)
            _colorbar()
        elif kind == 'hexbin':
            nbins = _plt.kwargs.get('nbins', 40)
            cntmax = gr.hexbin(x, y, nbins)
            if cntmax > 0:
                _plt.kwargs['zrange'] = (0, cntmax)
                _colorbar()
        elif kind == 'heatmap':
            x_min, x_max, y_min, y_max = _plt.kwargs['window']
            width, height = z.shape
            cmap = _colormap()
            icmap = np.zeros(256, np.uint32)
            for i in range(256):
                r, g, b, a = cmap[i]
                icmap[i] = (int(r*255) << 0) + (int(g*255) << 8) + (int(b*255) << 16) + (int(a*255) << 24)
            z_min, z_max = _plt.kwargs.get('zlim', (np.min(z), np.max(z)))
            if z_max < z_min:
                z_max, z_min = z_min, z_max
            if z_max > z_min:
                data = (z - z_min) / (z_max - z_min) * 255
            else:
                data = np.zeros((width, height))
            rgba = np.zeros((width, height), np.uint32)
            for x in range(width):
                for y in range(height):
                    rgba[x, y] = icmap[int(data[x, y])]
            gr.drawimage(x_min, x_max, y_min, y_max, width, height, rgba)
            _colorbar()
        elif kind == 'wireframe':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 50, 50)
            gr.setfillcolorind(0)
            z.shape = np.prod(z.shape)
            gr.surface(x, y, z, gr.OPTION_FILLED_MESH)
            _draw_axes(kind, 2)

        elif kind == 'surface':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
            z.shape = np.prod(z.shape)
            if _plt.kwargs.get('accelerate', True):
                gr3.clear()
                gr3.surface(x, y, z, gr.OPTION_COLORED_MESH)
            else:
                gr.surface(x, y, z, gr.OPTION_COLORED_MESH)
            _draw_axes(kind, 2)
            _colorbar(0.05)
        elif kind == 'plot3':
            gr.polyline3d(x, y, z)
            _draw_axes(kind, 2)
        elif kind == 'scatter3':
            gr.polymarker3d(x, y, z)
            _draw_axes(kind, 2)
        elif kind == 'imshow':
            _plot_img(z)
        elif kind == 'isosurface':
            _plot_iso(z)
        elif kind == 'polar':
            gr.uselinespec(spec)
            _plot_polar(x, y)
        elif kind == 'trisurf':
            gr.trisurface(x, y, z)
            _draw_axes(kind, 2)
            _colorbar(0.05)
        elif kind == 'tricont':
            zmin, zmax = _plt.kwargs['zrange']
            levels = np.linspace(zmin, zmax, 20)
            gr.tricontour(x, y, z, levels)
        gr.restorestate()
    if kind in ('line', 'scatter', 'stem') and 'labels' in _plt.kwargs:
        _draw_legend()

    if _plt.kwargs['update']:
        gr.updatews()
        if gr.isinline():
            return gr.show()
Exemple #11
0
x = [-2 + i * 0.5 for i in range(0, 29)]
y = [-7 + i * 0.5 for i in range(0, 29)]
z = list(range(0, 841))

for i in range(0, 29):
    for j in range(0, 29):
        r1 = math.sqrt((x[j] - 5)**2 + y[i]**2)
        r2 = math.sqrt((x[j] + 5)**2 + y[i]**2)
        z[i * 29 - 1 +
          j] = (math.exp(math.cos(r1)) + math.exp(math.cos(r2)) - 0.9) * 25

gr.setcharheight(24.0 / 500)
gr.settextalign(gr.TEXT_HALIGN_CENTER, gr.TEXT_VALIGN_TOP)
gr.textext(0.5, 0.9, "Surface Example")
(tbx, tby) = gr.inqtextext(0.5, 0.9, "Surface Example")
gr.fillarea(tbx, tby)

gr.setwindow(-2, 12, -7, 7)
gr.setspace(-80, 200, 45, 70)

gr.setcharheight(14.0 / 500)
gr.axes3d(1, 0, 20, -2, -7, -80, 2, 0, 2, -0.01)
gr.axes3d(0, 1, 0, 12, -7, -80, 0, 2, 0, 0.01)
gr.titles3d("X-Axis", "Y-Axis", "Z-Axis")

gr.surface(x, y, z, 3)
gr.surface(x, y, z, 1)

gr.updatews()
Exemple #12
0
def _plot_data(**kwargs):
    global _plt
    _plt.kwargs.update(kwargs)
    if not _plt.args:
        return
    kind = _plt.kwargs.get('kind', 'line')
    if _plt.kwargs['clear']:
        gr.clearws()
    if kind in ('imshow', 'isosurface'):
        _set_viewport(kind, _plt.kwargs['subplot'])
    elif not _plt.kwargs['ax']:
        _set_viewport(kind, _plt.kwargs['subplot'])
        _set_window(kind)
        if kind == 'polar':
            _draw_polar_axes()
        else:
            _draw_axes(kind)

    gr.setcolormap(_plt.kwargs.get('colormap', gr.COLORMAP_COOLWARM))
    gr.uselinespec(" ")
    for x, y, z, c, spec in _plt.args:
        gr.savestate()
        if 'alpha' in _plt.kwargs:
            gr.settransparency(_plt.kwargs['alpha'])
        if kind == 'line':
            mask = gr.uselinespec(spec)
            if mask in (0, 1, 3, 4, 5):
                gr.polyline(x, y)
            if mask & 2:
                gr.polymarker(x, y)
        elif kind == 'scatter':
            gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
            if z is not None or c is not None:
                if c is not None:
                    c_min = c.min()
                    c_ptp = c.ptp()
                for i in range(len(x)):
                    if z is not None:
                        gr.setmarkersize(z[i] / 100.0)
                    if c is not None:
                        c_index = 1000 + int(255 * (c[i]-c_min)/c_ptp)
                        gr.setmarkercolorind(c_index)
                    gr.polymarker([x[i]], [y[i]])
            else:
                gr.polymarker(x, y)
        elif kind == 'stem':
            gr.setlinecolorind(1)
            gr.polyline(_plt.kwargs['window'][:2], [0, 0])
            gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
            gr.uselinespec(spec)
            for xi, yi in zip(x, y):
                gr.polyline([xi, xi], [0, yi])
            gr.polymarker(x, y)
        elif kind == 'hist':
            y_min = _plt.kwargs['window'][2]
            for i in range(1, len(y)+1):
                gr.setfillcolorind(989)
                gr.setfillintstyle(gr.INTSTYLE_SOLID)
                gr.fillrect(x[i-1], x[i], y_min, y[i-1])
                gr.setfillcolorind(1)
                gr.setfillintstyle(gr.INTSTYLE_HOLLOW)
                gr.fillrect(x[i-1], x[i], y_min, y[i-1])
        elif kind == 'contour':
            z_min, z_max = _plt.kwargs['zrange']
            gr.setspace(z_min, z_max, 0, 90)
            h = [z_min + i/19*(z_max-z_min) for i in range(20)]
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
            z.shape = np.prod(z.shape)
            gr.contour(x, y, h, z, 1000)
            _colorbar(0, 20)
        elif kind == 'contourf':
            z_min, z_max = _plt.kwargs['zrange']
            gr.setspace(z_min, z_max, 0, 90)
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
                z.shape = (200, 200)
            if _plt.kwargs['scale'] & gr.OPTION_Z_LOG != 0:
                z = np.log(z)
            gr.surface(x, y, z, gr.OPTION_CELL_ARRAY)
            _colorbar()
        elif kind == 'hexbin':
            nbins = _plt.kwargs.get('nbins', 40)
            cntmax = gr.hexbin(x, y, nbins)
            if cntmax > 0:
                _plt.kwargs['zrange'] = (0, cntmax)
                _colorbar()
        elif kind == 'heatmap':
            x_min, x_max, y_min, y_max = _plt.kwargs['window']
            width, height = z.shape
            cmap = _colormap()
            icmap = np.zeros(256, np.uint32)
            for i in range(256):
                r, g, b, a = cmap[i]
                icmap[i] = (int(r*255) << 0) + (int(g*255) << 8) + (int(b*255) << 16) + (int(a*255) << 24)
            z_range = np.ptp(z)
            if z_range > 0:
                data = (z - np.min(z)) / z_range * 255
            else:
                data = np.zeros((width, height))
            rgba = np.zeros((width, height), np.uint32)
            for x in range(width):
                for y in range(height):
                    rgba[x, y] = icmap[int(data[x, y])]
            gr.drawimage(x_min, x_max, y_min, y_max, width, height, rgba)
            _colorbar()
        elif kind == 'wireframe':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 50, 50)
            gr.setfillcolorind(0)
            z.shape = np.prod(z.shape)
            gr.surface(x, y, z, gr.OPTION_FILLED_MESH)
            _draw_axes(kind, 2)

        elif kind == 'surface':
            if x.shape == y.shape == z.shape:
                x, y, z = gr.gridit(x, y, z, 200, 200)
            z.shape = np.prod(z.shape)
            if _plt.kwargs.get('accelerate', True):
                gr3.clear()
                gr3.surface(x, y, z, gr.OPTION_COLORED_MESH)
            else:
                gr.surface(x, y, z, gr.OPTION_COLORED_MESH)
            _draw_axes(kind, 2)
            _colorbar(0.05)
        elif kind == 'plot3':
            gr.polyline3d(x, y, z)
            _draw_axes(kind, 2)
        elif kind == 'scatter3':
            gr.polymarker3d(x, y, z)
            _draw_axes(kind, 2)
        elif kind == 'imshow':
            _plot_img(z)
        elif kind == 'isosurface':
            _plot_iso(z)
        elif kind == 'polar':
            gr.uselinespec(spec)
            _plot_polar(x, y)
        elif kind == 'trisurf':
            gr.trisurface(x, y, z)
            _draw_axes(kind, 2)
            _colorbar(0.05)
        gr.restorestate()
    if kind in ('line', 'scatter', 'stem') and 'labels' in _plt.kwargs:
        _draw_legend()

    if _plt.kwargs['update']:
        gr.updatews()
        if gr.isinline():
            return gr.show()