Colormap

Example usage

A simple example of applying a colormap on data:

from trollimage.colormap import rdbu
from trollimage.image import Image

img = Image(data, mode="L")

rdbu.set_range(-90 + 273.15, 30 + 273.15)
img.colorize(rdbu)

img.show()

A more complex example, with a colormap build from greyscale on one end, and spectral on the other, like this:

from trollimage.colormap import spectral, greys
from trollimage.image import Image

img = Image(data, mode="L")

greys.set_range(-40 + 273.15, 30 + 273.15)
spectral.set_range(-90 + 273.15, -40.00001 + 273.15)
my_cm = spectral + greys
img.colorize(my_cm)

img.show()

Now applying a palette to the data, with sharp edges:

from trollimage.colormap import set3
from trollimage.image import Image

img = Image(data, mode="L")

set3.set_range(-90 + 273.15, 30 + 273.15)
img.palettize(set3)

img.show()