def gen_dummy_data(): minlat = 24 maxlat = 50 minlon = -125 maxlon = -67 #---Size of dummy data. Use smaller values (16x32) for faster code speed nlat = 64 nlon = 128 data = Ngl.generate_2d_array([nlat,nlon], 10, 19, 0., 100.) lat = Ngl.fspan(minlat,maxlat,nlat) lon = Ngl.fspan(minlon,maxlon,nlon) return data,lat,lon
wks = Ngl.open_wks(wks_type, "viewport1")
# Add some named colors. This is no longer needed in PyNGL 1.5.0
#forest_green = numpy.array([ 34, 139, 34])/255.
#navy_blue = numpy.array([ 0, 0, 128])/255.
#brown = numpy.array([165, 42, 42])/255.
#ig = Ngl.new_color(wks,forest_green[0],forest_green[1],forest_green[2])
#ib = Ngl.new_color(wks,navy_blue[0], navy_blue[1], navy_blue[2])
#ir = Ngl.new_color(wks,brown[0], brown[1], brown[2])
# Generate some dummy data.
cmin = -19.23
cmax = 16.81
data = Ngl.generate_2d_array([100, 100], 10, 10, cmin, cmax)
nice_min, nice_max, nice_spc = Ngl.nice_cntr_levels(cmin, cmax, cint=3)
# Read in color map so we can subset it
cmap = Ngl.read_colormap_file("nrl_sirkes")
# Set up resources for a contour plot.
cnres = Ngl.Resources()
cnres.nglMaximize = True # Maximize plot in frame
cnres.nglDraw = False # Don't draw plot
cnres.nglFrame = False # Don't advance the frame
cnres.cnFillOn = True # Turn on contour fill
cnres.cnFillPalette = cmap[:-3, :]
[0.75,0.50,1.00],[0.50,0.00,1.00],[0.00,0.00,1.00], \
[0.00,0.50,1.00],[0.00,1.00,1.00],[0.00,1.00,0.60], \
[0.00,1.00,0.00],[0.70,1.00,0.00],[1.00,1.00,0.00], \
[1.00,0.75,0.00],[1.00,0.38,0.38],[1.00,0.00,0.38], \
[1.00,0.00,0.00]])
#
# Open a workstation.
#
wres = Ngl.Resources()
wres.wkColorMap = cmap
wks_type = "png"
wks = Ngl.open_wks(wks_type, "cn12p", wres)
# Generate some dummy data
dirc = Ngl.pynglpath("data")
z = Ngl.generate_2d_array([40, 40], 15, 15, -10., 110.)
# Create contour and map resource lists.
cnres = Ngl.Resources()
mpres = Ngl.Resources()
cnres.nglDraw = False
cnres.nglFrame = False
mpres.nglDraw = False
mpres.nglFrame = False
#
# Map fill resources.
#
# To fill map areas, you can first specify a general set
# of areas (mpFillBoundarySets) and then a specific set of
# areas. This allows you to indicate what general areas you always
dmax = dmaxs[n // 3]
dspa = dspas[n // 3]
mstart = numpy.random.uniform(10, 25, 1).astype(int)
mend = numpy.random.uniform(10, 25, 1).astype(int)
xstart = numpy.random.uniform(dmin, dmin + 2, 1)
xend = numpy.random.uniform(dmax - 2, dmax, 1)
#---This is a new resource added in PyNGL 1.5.0
res.cnFillPalette = colormaps[n // 3]
res.cnMinLevelValF = dmin
res.cnMaxLevelValF = dmax
res.cnLevelSpacingF = dspa
data = Ngl.generate_2d_array([nlat, nlon], mstart[0], mend[0], xstart[0],
xend[0])
plots.append(Ngl.contour_map(wks, data, res))
# Resources for panelling
pres = Ngl.Resources()
pres.nglFrame = False
pres.nglPanelLabelBar = True
# Calculate start Y position for first row of plots
height = 0.15 # we know this will be height of small plots
extra = 1.0 - (3 * height)
top = 1.0 - (extra / 2.)
# Draw a title before we draw plots
title = "Multiple panels on one page, 3 different colormaps"
dmax = dmaxs[n / 3]
dspa = dspas[n / 3]
mstart = numpy.random.uniform(10, 25, 1).astype(int)
mend = numpy.random.uniform(10, 25, 1).astype(int)
xstart = numpy.random.uniform(dmin, dmin + 2, 1)
xend = numpy.random.uniform(dmax - 2, dmax, 1)
#---This is a new resource added in PyNGL 1.5.0
res.cnFillPalette = colormaps[n / 3]
res.cnMinLevelValF = dmin
res.cnMaxLevelValF = dmax
res.cnLevelSpacingF = dspa
data = Ngl.generate_2d_array([nlat, nlon], mstart, mend, xstart, xend)
plots.append(Ngl.contour_map(wks, data, res))
# Resources for panelling
pres = Ngl.Resources()
pres.nglFrame = False
pres.nglPanelLabelBar = True
# Calculate start Y position for first row of plots
height = 0.15 # we know this will be height of small plots
extra = 1.0 - (3 * height)
top = 1.0 - (extra / 2.)
# Draw a title before we draw plots
title = "Multiple panels on one page, 3 different colormaps"
[0.75,0.50,1.00],[0.50,0.00,1.00],[0.00,0.00,1.00], \
[0.00,0.50,1.00],[0.00,1.00,1.00],[0.00,1.00,0.60], \
[0.00,1.00,0.00],[0.70,1.00,0.00],[1.00,1.00,0.00], \
[1.00,0.75,0.00],[1.00,0.38,0.38],[1.00,0.00,0.38], \
[1.00,0.00,0.00]])
#
# Open a workstation.
#
wres = Ngl.Resources()
wres.wkColorMap = cmap
wks_type = "ps"
wks = Ngl.open_wks(wks_type,"cn12p",wres)
# Generate some dummy data
dirc = Ngl.pynglpath("data")
z = Ngl.generate_2d_array ([40,40],15,15,-10.,110.)
# Create contour and map resource lists.
cnres = Ngl.Resources()
mpres = Ngl.Resources()
cnres.nglDraw = False
cnres.nglFrame = False
mpres.nglDraw = False
mpres.nglFrame = False
#
# Map fill resources.
#
# To fill map areas, you can first specify a general set
# of areas (mpFillBoundarySets) and then a specific set of
# areas. This allows you to indicate what general areas you always
