def image(self,var,time,level=0,clip=None,mono=False,illuminate=None):
"""Plot a colour map.
var: CFvariable
time: time slice
level: horizontal slice
clip: only display data where clip>0.
mono: convert colour to mono
illuminate: azimuth of light source (default None)
"""
clipped = False
if clip in ['topg','thk','usurf','is'] :
cvar = CFvariable(var.cffile,clip)
self.clip(cvar.getGMTgrid(time),0.1)
clipped = True
if mono:
args="-M"
else:
args=""
illu = False
if illuminate in ['topg','thk','usurf','is'] :
illu = True
illu_var = CFvariable(var.cffile,illuminate)
illu_grd = illu_var.getGMTgrid(time,velogrid=var.isvelogrid)
illu_arg = "=1 -G.__illu.grd -A0 -Ne0.6"
gridcommand('grdgradient',illu_arg,illu_grd,verbose=self.verbose)
args = "%s -I.__illu.grd"%args
PyGMT.AreaXY.image(self,var.getGMTgrid(time,level=level),var.colourmap.cptfile,args=args)
if clipped:
self.unclip()
if illu:
os.remove('.__illu.grd')
def land(self,time,grey='180',illuminate=None):
"""Plot area above sea level.
time: time slice
grey: grey value."""
args=""
cvar = CFvariable(self.file,'topg')
cvar_grd = cvar.getGMTgrid(time)
if illuminate in ['topg','thk','is'] :
illu_arg = "=1 -G.__illu.grd -A0 -Ne0.6"
gridcommand('grdgradient',illu_arg,cvar_grd,verbose=self.verbose)
args = "%s -I.__illu.grd"%args
# create colour map
cmap = open('.__grey.cpt','w')
cmap.write('-15000 255 255 255 0 255 255 255\n')
cmap.write('0 %s %s %s 10000 %s %s %s \n'%(grey,grey,grey,grey,grey,grey))
cmap.close()
PyGMT.AreaXY.image(self,cvar_grd,'.__grey.cpt',args=args)
os.remove('.__grey.cpt')
def land(self,time,grey='180',illuminate=None):
"""Plot area above sea level.
time: time slice
grey: grey value."""
args=""
cvar = CFvariable(self.file,'topg')
cvar_grd = cvar.getGMTgrid(time)
if illuminate in ['topg','thk','is'] :
illu_file = tempfile.NamedTemporaryFile(suffix='.grd')
illu_arg = "=1 -G%s -A0 -Ne0.6"%(illu_file.name)
gridcommand('grdgradient',illu_arg,cvar_grd,verbose=self.verbose)
args = "%s -I%s"%(args,illu_file.name)
# create colour map
cmap = tempfile.NamedTemporaryFile(suffix='.cpt')
cmap.write('-15000 255 255 255 0 255 255 255\n')
cmap.write('0 %s %s %s 10000 %s %s %s \n'%(grey,grey,grey,grey,grey,grey))
cmap.flush()
PyGMT.AreaXY.image(self,cvar_grd,cmap.name,args=args)
cmap.close()
def raw_image(self, cffile, time, grid, colourmap, isvelogrid=False, clip=None, mono=False, illuminate=None):
"""Plot a GMT grid
cffile: cffile
time: time slice
grid: is the GMT grid to be plotted
isvelogrid: boolean whether we are plotting on velogrid
colourmap: is the colourmap to be used
clip: only display data where clip>0.
mono: convert colour to mono
illuminate: azimuth of light source (default None)
"""
clipped = False
if clip in ["topg", "thk", "usurf", "is"]:
cvar = CFvariable(cffile, clip)
self.clip(cvar.getGMTgrid(time), 0.1)
clipped = True
if mono:
args = "-M"
else:
args = ""
illu = False
if illuminate in ["topg", "thk", "usurf", "is"]:
illu = True
illu_var = CFvariable(cffile, illuminate)
illu_grd = illu_var.getGMTgrid(time, velogrid=isvelogrid)
illu_file = tempfile.NamedTemporaryFile(suffix=".grd")
illu_arg = "=bf -G%s -A0 -Ne0.6" % illu_file.name
gridcommand("grdgradient", illu_arg, illu_grd, verbose=self.verbose)
args = "%s -I%s" % (args, illu_file.name)
PyGMT.AreaXY.image(self, grid, colourmap, args=args)
if clipped:
self.unclip()
if illu:
illu_file.close()
def land(self, time, grey="180", illuminate=None):
"""Plot area above sea level.
time: time slice
grey: grey value."""
args = ""
cvar = CFvariable(self.file, "topg")
cvar_grd = cvar.getGMTgrid(time)
if illuminate in ["topg", "thk", "is"]:
illu_arg = "=1 -G.__illu.grd -A0 -Ne0.6"
gridcommand("grdgradient", illu_arg, cvar_grd, verbose=self.verbose)
args = "%s -I.__illu.grd" % args
# create colour map
cmap = open(".__grey.cpt", "w")
cmap.write("-15000 255 255 255 0 255 255 255\n")
cmap.write("0 %s %s %s 10000 %s %s %s \n" % (grey, grey, grey, grey, grey, grey))
cmap.close()
PyGMT.AreaXY.image(self, cvar_grd, ".__grey.cpt", args=args)
os.remove(".__grey.cpt")
def land(self, time, grey="180", illuminate=None):
"""Plot area above sea level.
time: time slice
grey: grey value."""
args = ""
cvar = CFvariable(self.file, "topg")
cvar_grd = cvar.getGMTgrid(time)
if illuminate in ["topg", "thk", "is"]:
illu_file = tempfile.NamedTemporaryFile(suffix=".grd")
illu_arg = "=bf -G%s -A0 -Ne0.6" % (illu_file.name)
gridcommand("grdgradient", illu_arg, cvar_grd, verbose=self.verbose)
args = "%s -I%s" % (args, illu_file.name)
# create colour map
cmap = tempfile.NamedTemporaryFile(suffix=".cpt")
cmap.write("-15000 255 255 255 0 255 255 255\n")
cmap.write("0 %s %s %s 10000 %s %s %s \n" % (grey, grey, grey, grey, grey, grey))
cmap.flush()
PyGMT.AreaXY.image(self, cvar_grd, cmap.name, args=args)
cmap.close()