def main():
size = 4096
bbox = [(0,0),(0,size),(size,size),(size,0)]
centers, neighbors, vertices, regions = getVoronoi(size, bbox)
vert_neighbors = [[] for i in vertices]
vert_regions = [[] for i in vertices]
for r, p in enumerate(regions):
for i, v in enumerate(p[:-1]):
vert_regions[v].append(r)
if p[i-1] not in vert_neighbors[v]:
vert_neighbors[v].append(p[i-1])
if p[i+1] not in vert_neighbors[v]:
vert_neighbors[v].append(p[i+1])
cell_type = getBasicShape(size, neighbors, vertices, regions, 32268)
dist_to_coast = getDistsToCoast(vertices, vert_regions,
vert_neighbors, cell_type)
patches = [Polygon(vertices[p], True, ec='k') for p in regions]
patchCol = PatchCollection(patches, cmap=plt.get_cmap('terrain'))
patchCol.set_clim(0, 1)
patchCol.set_antialiased(False)
fig, ax = plt.subplots()
ax.add_collection(patchCol)
ax.set_aspect('equal')
ax.set_xlim(0, size)
ax.set_ylim(0, size)
plt.tight_layout()
plt.axis('off')
for i in range(100):
seed = datetime.now().microsecond
colors = getTerrain(size, vertices, regions, cell_type, dist_to_coast, seed)
patchCol.set_array(np.array(colors))
plt.savefig('terrains/%06d.png' % seed, format='png', dpi=1200)
def cvshade(clon,clat,valsin,proj='cyl',lon0=215,res='c',blat=30,fz=(11.6,5.8),add=None,cbticksize=12,cbticks=None,nocb=None,vlo=None,vhi=None,lat0=None,wid=12000000,ht=8000000,**kwargs):
from mpl_toolkits.basemap import Basemap, shiftgrid, addcyclic
from mcmath import edges
from matplotlib.patches import Polygon
from matplotlib.collections import PatchCollection
from ferr import use
## dgrid = use('/scratch/local2/u241180/data/mill/MPI_lon-lat-pressure-points_ocean-grid.nc',silent=1)
## clon = dgrid.v['grid_center_lon'][:]
## clat = dgrid.v['grid_center_lat'][:]
## clon_crnr = dgrid.v['grid_corner_lon'][:]
## clat_crnr = dgrid.v['grid_corner_lat'][:]
if clon.shape[0] == 4 and clat.shape[0] == 4:
clat = np.transpose(clat,(1,2,0))
clon = np.transpose(clon,(1,2,0))
clonc = clon.reshape((-1,4))
clatc = clat.reshape((-1,4))
clonc1 = np.where(clonc < 35, clonc + 360, clonc)
clonc2 = np.empty_like(clonc1)
clatc2 = clatc.copy()
lhs_x = np.empty((0,4),dtype=np.float32)
lhs_y = np.empty((0,4),dtype=np.float32)
lhs_val = np.empty(0,dtype=np.float32)
val_flat = valsin.copy()
if isinstance(valsin,np.ma.MaskedArray):
val_flat[val_flat.mask] = np.nan
val_flat = val_flat.flatten()
for ii in xrange(clonc1.shape[0]):
clonc2[ii] = clonc1[ii]
if ((clonc1[ii] > 350).any() & (clonc1[ii] < 50).any()):
clonc2[ii] = np.where(clonc1[ii] < 50, 395., clonc1[ii])
lhs_x = np.append(lhs_x,np.where(clonc1[ii] > 50,35.,clonc1[ii]).reshape(1,-1),axis=0)
lhs_y = np.append(lhs_y,clatc2[ii].reshape(1,-1),axis=0)
lhs_val = np.append(lhs_val,val_flat[ii])
val2 = np.append(val_flat,lhs_val)
if isinstance(valsin,np.ma.MaskedArray):
val2 = np.ma.masked_invalid(val2)
clonc2 = np.append(clonc2,lhs_x,axis=0)
clatc2 = np.append(clatc2,lhs_y,axis=0)
if proj == 'cyl':
m1 = Basemap(projection='cyl',llcrnrlat=-90,urcrnrlat=90,\
llcrnrlon=35,urcrnrlon=395,resolution='c')
elif proj == 'moll':
m1 = Basemap(projection='moll',lon_0=lon0)
elif proj == 'npl':
m1 = Basemap(projection='nplaea',boundinglat=blat,lon_0=lon0,resolution='l')
elif proj == 'spl':
m1 = Basemap(projection='splaea',boundinglat=blat,lon_0=lon0,resolution='l')
elif proj == 'laea':
if (lat0 is None):
raise MCPlotError("central latitude not specified")
m1 = Basemap(width=wid,height=ht,resolution='l',projection='laea',\
lat_ts=lat0,lat_0=lat0,lon_0=lon0)
else:
raise MCPlotError("no proj %s found!" % proj)
if add is None:
fig = plt.figure(figsize=fz)
ax = fig.add_axes((0.05,0.05,0.8,0.9),autoscale_on=False)
else:
fig = plt.gcf()
ax = plt.gca()
patches = np.empty(clonc2.shape[0],dtype=object)
for ii in xrange(clonc2.shape[0]):
xx1 = clonc2[ii]
yy1 = clatc2[ii]
xx,yy = m1(xx1,yy1)
indx = np.array(zip(xx,yy))
patches[ii] = Polygon(indx, True)
p1 = PatchCollection(patches, edgecolors='none', linewidths=0,**kwargs)
p1.set_array(val2)
if ((vlo is not None) & (vhi is not None)):
p1.set_clim(vmin=vlo,vmax=vhi)
p1.set_antialiased(False)
m1.drawmapboundary()
## ax = gca()
ax.add_collection(p1)
m1.drawcoastlines()
if not bool(nocb):
if add is None:
ax2 = fig.add_axes((0.89,0.1,0.02,0.8),autoscale_on=False)
if cbticks is None:
plt.colorbar(p1,cax=ax2,ax=ax,extend='both')
else:
plt.colorbar(p1,cax=ax2,ax=ax,extend='both',ticks=cbticks)
else:
bbox1 = ax.get_position()
endx = bbox1.get_points()[1,0]
endy = bbox1.get_points()[1,1]
begy = bbox1.get_points()[0,1]
begx = bbox1.get_points()[0,0]
yext = 0.9*(endy - begy)
xleft = endx - begx
xspacer = 0.005
yspacer = 0.02
xext = 0.03*xleft
## if xext > (0.08*yext):
## xext = 0.08*yext
ax2 = fig.add_axes((endx+xspacer,begy+yspacer,xext,yext),autoscale_on=False)
if cbticks is None:
plt.colorbar(p1,cax=ax2,ax=ax,extend='both')
else:
plt.colorbar(p1,cax=ax2,ax=ax,extend='both',ticks=cbticks)
if cbticksize is not None:
ytl = ax2.get_yticklabels()
plt.setp(ytl,'size',cbticksize)
return m1,p1
def cvshade(clon,
clat,
valsin,
proj='cyl',
lon0=215,
res='c',
blat=30,
fz=(11.6, 5.8),
add=None,
cbticksize=12,
cbticks=None,
nocb=None,
vlo=None,
vhi=None,
lat0=None,
wid=12000000,
ht=8000000,
land1=None,
land2='blank',
landmask=None,
landdark=None,
hatchmask=None,
hatchalpha=None,
**kwargs):
"""An increasingly complicated function for generating decent graphs of shaded contour plots
on the surface of the earth. This version is really only designed to work with rectilinear
grids. Placement of colorbars in multi-panel figures has proven to be a big problem, and more
parameters now exist to try to manage this better in multiple circumstances.
Params: xin - longtitude array of data (1-d)
yin - latitude array of data (1-d)
valsin - data to shade
proj - projection to employ,
currently only the following are enabled: cyl, moll, npl, spl, laea, robin
lon0 - central longitude meridian for plot
res - same as in Basemap
blat - bounding latitude for polar projections: npl,spl
fz - tuple for figure size
add - add the shade plot to current axes instead of making a new figure
cbticksize, cbticks - self-explanatory, hopefully
nocb - don't auto-add a colorbar
land1 - does a continent fill for the map instead of plotting/shading a land mask like 'landmask':
None by default
land2 - does a background fill for named color; background color by default
if None, no fill is done for the map boundary at all, nor for continents
hatchmask - required for either of the two hatching methods; needs to be a MaskedArray,
and not just a mask (not just a boolean array)
"""
from mpl_toolkits.basemap import Basemap, shiftgrid, addcyclic
from mcmath import edges
from matplotlib.patches import Polygon
from matplotlib.collections import PatchCollection
from ferr import use
if clon.shape[0] == 4 and clat.shape[0] == 4:
clat = np.transpose(clat, (1, 2, 0))
clon = np.transpose(clon, (1, 2, 0))
clonc = clon.reshape((-1, 4))
clatc = clat.reshape((-1, 4))
lon = clonc.mean(axis=1)
lat = clatc.mean(axis=1)
clonc1 = np.where(clonc < 35, clonc + 360, clonc)
clonc2 = np.empty_like(clonc1)
clatc2 = clatc.copy()
lhs_x = np.zeros((4000, 4), dtype=np.float32)
lhs_y = np.zeros((4000, 4), dtype=np.float32)
lhs_val = np.zeros(4000, dtype=np.float32)
val_flat = valsin.copy()
if isinstance(valsin, np.ma.MaskedArray):
val_flat[val_flat.mask] = np.nan
val_flat = val_flat.flatten()
if hatchmask is not None:
hatch_flat = hatchmask.copy()
hatch_flat[hatch_flat.mask] = np.nan
hatch_flat = hatch_flat.flatten()
lhs_hatch = np.zeros(4000, dtype=np.float32)
if landmask is not None:
land_flat = landmask.copy()
land_flat[land_flat.mask] = np.nan
land_flat = land_flat.flatten()
lhs_land = np.zeros(4000, dtype=np.float32)
final_size = 0
for ii in xrange(clonc1.shape[0]):
clonc2[ii] = clonc1[ii]
if ((clonc1[ii] > 350).any() & (clonc1[ii] < 50).any()):
clonc2[ii] = np.where(clonc1[ii] < 50, 395., clonc1[ii])
lhs_x[final_size] = np.where(clonc1[ii] > 50, 35.,
clonc1[ii]).reshape(1, -1)
lhs_y[final_size] = clatc2[ii].reshape(1, -1)
lhs_val[final_size] = val_flat[ii]
if hatchmask is not None:
lhs_hatch[final_size] = hatch_flat[ii]
if landmask is not None:
lhs_land[final_size] = land_flat[ii]
final_size = final_size + 1
val2 = np.r_[val_flat, lhs_val[:final_size]]
if isinstance(valsin, np.ma.MaskedArray):
val2 = np.ma.masked_invalid(val2)
clonc2 = np.r_['0,2,0', clonc2, lhs_x[:final_size]]
clatc2 = np.r_['0,2,0', clatc2, lhs_y[:final_size]]
if hatchmask is not None:
hatch2 = np.r_[hatch_flat, lhs_hatch[:final_size]]
hatch2 = np.ma.masked_invalid(hatch2)
if landmask is not None:
land2 = np.r_[land_flat, lhs_land[:final_size]]
land2 = np.ma.masked_invalid(land2)
if add is None:
fig = plt.figure(figsize=fz)
ax = fig.add_axes((0.05, 0.05, 0.8, 0.9), autoscale_on=False)
else:
fig = plt.gcf()
ax = plt.gca()
if proj == 'cyl':
m1 = Basemap(projection='cyl',llcrnrlat=-90,urcrnrlat=90,\
llcrnrlon=35,urcrnrlon=395,resolution='c')
elif proj == 'moll':
m1 = Basemap(projection='moll', lon_0=215, resolution='c')
elif proj == 'robin':
m1 = Basemap(projection='robin', lon_0=215, resolution='c')
elif proj == 'npl':
m1 = Basemap(projection='nplaea',
boundinglat=blat,
lon_0=lon0,
resolution='l')
elif proj == 'spl':
m1 = Basemap(projection='splaea',
boundinglat=blat,
lon_0=lon0,
resolution='l')
elif proj == 'laea':
if (lat0 is None):
raise MCPlotError("central latitude not specified")
m1 = Basemap(width=wid,height=ht,resolution='l',projection='laea',\
lat_ts=lat0,lat_0=lat0,lon_0=lon0)
else:
raise MCPlotError("no proj %s found!" % proj)
patches = np.empty(clonc2.shape[0], dtype=object)
for ii in xrange(clonc2.shape[0]):
xx1 = clonc2[ii]
yy1 = clatc2[ii]
xx, yy = m1(xx1, yy1)
indx = np.array(zip(xx, yy))
patches[ii] = Polygon(indx, True)
p1 = PatchCollection(patches, edgecolors='none', **kwargs)
p1.set_array(val2)
if ((vlo is not None) & (vhi is not None)):
p1.set_clim(vmin=vlo, vmax=vhi)
p1.set_antialiased(False)
if land1 is not None:
m1.fillcontinents(color=land1, lake_color=land1)
if land2 == 'blank':
m1.drawmapboundary()
elif land2 is None:
m1.drawmapboundary(linewidth=0, fill_color=land2)
else:
m1.drawmapboundary(fill_color=land2)
ax.add_collection(p1)
if land2 is not None:
m1.drawcoastlines()
if (hatchmask is not None):
nls2 = mpl.colors.BoundaryNorm(linspace(0., 1., 11), 180)
if hatchalpha is None:
hatchalpha = 0.5
p2 = PatchCollection(patches,
edgecolors='none',
facecolors='dimgrey',
linewidths=0,
zorder=2,
alpha=hatchalpha)
p2.set_array(hatch2)
ax.add_collection(p2)
if (landmask is not None):
if landdark is not None:
nls2 = mpl.colors.BoundaryNorm(linspace(0., 1., 11), landdark)
else:
nls2 = mpl.colors.BoundaryNorm(linspace(0., 1., 11), 180)
p3 = PatchCollection(patches,
edgecolors='none',
linewidths=0,
cmap=cm.Greys,
norm=nls2)
p3.set_array(land2)
ax.add_collection(p3)
if not bool(nocb):
if add is None:
ax2 = fig.add_axes((0.89, 0.1, 0.02, 0.8), autoscale_on=False)
if cbticks is None:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both')
else:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both', ticks=cbticks)
else:
bbox1 = ax.get_position()
endx = bbox1.get_points()[1, 0]
endy = bbox1.get_points()[1, 1]
begy = bbox1.get_points()[0, 1]
begx = bbox1.get_points()[0, 0]
yext = 0.9 * (endy - begy)
xleft = endx - begx
xspacer = 0.005
yspacer = 0.02
xext = 0.03 * xleft
ax2 = fig.add_axes((endx + xspacer, begy + yspacer, xext, yext),
autoscale_on=False)
if cbticks is None:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both')
else:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both', ticks=cbticks)
if cbticksize is not None:
ytl = ax2.get_yticklabels()
plt.setp(ytl, 'size', cbticksize)
return m1, p1
def cvshade(clon,
clat,
valsin,
proj='cyl',
lon0=215,
res='c',
blat=30,
fz=(11.6, 5.8),
add=None,
cbticksize=12,
cbticks=None,
nocb=None,
vlo=None,
vhi=None,
lat0=None,
wid=12000000,
ht=8000000,
**kwargs):
from mpl_toolkits.basemap import Basemap, shiftgrid, addcyclic
from mcmath import edges
from matplotlib.patches import Polygon
from matplotlib.collections import PatchCollection
from ferr import use
## dgrid = use('/scratch/local2/u241180/data/mill/MPI_lon-lat-pressure-points_ocean-grid.nc',silent=1)
## clon = dgrid.v['grid_center_lon'][:]
## clat = dgrid.v['grid_center_lat'][:]
## clon_crnr = dgrid.v['grid_corner_lon'][:]
## clat_crnr = dgrid.v['grid_corner_lat'][:]
if clon.shape[0] == 4 and clat.shape[0] == 4:
clat = np.transpose(clat, (1, 2, 0))
clon = np.transpose(clon, (1, 2, 0))
clonc = clon.reshape((-1, 4))
clatc = clat.reshape((-1, 4))
clonc1 = np.where(clonc < 35, clonc + 360, clonc)
clonc2 = np.empty_like(clonc1)
clatc2 = clatc.copy()
lhs_x = np.empty((0, 4), dtype=np.float32)
lhs_y = np.empty((0, 4), dtype=np.float32)
lhs_val = np.empty(0, dtype=np.float32)
val_flat = valsin.copy()
if isinstance(valsin, np.ma.MaskedArray):
val_flat[val_flat.mask] = np.nan
val_flat = val_flat.flatten()
for ii in xrange(clonc1.shape[0]):
clonc2[ii] = clonc1[ii]
if ((clonc1[ii] > 350).any() & (clonc1[ii] < 50).any()):
clonc2[ii] = np.where(clonc1[ii] < 50, 395., clonc1[ii])
lhs_x = np.append(lhs_x,
np.where(clonc1[ii] > 50, 35.,
clonc1[ii]).reshape(1, -1),
axis=0)
lhs_y = np.append(lhs_y, clatc2[ii].reshape(1, -1), axis=0)
lhs_val = np.append(lhs_val, val_flat[ii])
val2 = np.append(val_flat, lhs_val)
if isinstance(valsin, np.ma.MaskedArray):
val2 = np.ma.masked_invalid(val2)
clonc2 = np.append(clonc2, lhs_x, axis=0)
clatc2 = np.append(clatc2, lhs_y, axis=0)
if proj == 'cyl':
m1 = Basemap(projection='cyl',llcrnrlat=-90,urcrnrlat=90,\
llcrnrlon=35,urcrnrlon=395,resolution='c')
elif proj == 'moll':
m1 = Basemap(projection='moll', lon_0=lon0)
elif proj == 'npl':
m1 = Basemap(projection='nplaea',
boundinglat=blat,
lon_0=lon0,
resolution='l')
elif proj == 'spl':
m1 = Basemap(projection='splaea',
boundinglat=blat,
lon_0=lon0,
resolution='l')
elif proj == 'laea':
if (lat0 is None):
raise MCPlotError("central latitude not specified")
m1 = Basemap(width=wid,height=ht,resolution='l',projection='laea',\
lat_ts=lat0,lat_0=lat0,lon_0=lon0)
else:
raise MCPlotError("no proj %s found!" % proj)
if add is None:
fig = plt.figure(figsize=fz)
ax = fig.add_axes((0.05, 0.05, 0.8, 0.9), autoscale_on=False)
else:
fig = plt.gcf()
ax = plt.gca()
patches = np.empty(clonc2.shape[0], dtype=object)
for ii in xrange(clonc2.shape[0]):
xx1 = clonc2[ii]
yy1 = clatc2[ii]
xx, yy = m1(xx1, yy1)
indx = np.array(zip(xx, yy))
patches[ii] = Polygon(indx, True)
p1 = PatchCollection(patches, edgecolors='none', linewidths=0, **kwargs)
p1.set_array(val2)
if ((vlo is not None) & (vhi is not None)):
p1.set_clim(vmin=vlo, vmax=vhi)
p1.set_antialiased(False)
m1.drawmapboundary()
## ax = gca()
ax.add_collection(p1)
m1.drawcoastlines()
if not bool(nocb):
if add is None:
ax2 = fig.add_axes((0.89, 0.1, 0.02, 0.8), autoscale_on=False)
if cbticks is None:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both')
else:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both', ticks=cbticks)
else:
bbox1 = ax.get_position()
endx = bbox1.get_points()[1, 0]
endy = bbox1.get_points()[1, 1]
begy = bbox1.get_points()[0, 1]
begx = bbox1.get_points()[0, 0]
yext = 0.9 * (endy - begy)
xleft = endx - begx
xspacer = 0.005
yspacer = 0.02
xext = 0.03 * xleft
## if xext > (0.08*yext):
## xext = 0.08*yext
ax2 = fig.add_axes((endx + xspacer, begy + yspacer, xext, yext),
autoscale_on=False)
if cbticks is None:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both')
else:
plt.colorbar(p1, cax=ax2, ax=ax, extend='both', ticks=cbticks)
if cbticksize is not None:
ytl = ax2.get_yticklabels()
plt.setp(ytl, 'size', cbticksize)
return m1, p1