matplotlib example create soil moisture colorbar (snippet)

Python matplotlib example 'create soil moisture colorbar'

Modules used in program:

• import numpy as np
• import matplotlib.pyplot as plt
• import matplotlib

python create soil moisture colorbar

Python matplotlib example: create soil moisture colorbar

import matplotlib
matplotlib.use('agg')
matplotlib.rcdefaults()

import matplotlib.pyplot as plt

height = 500
width = 150

import numpy as np

from matplotlib.colors import LinearSegmentedColormap
cmap = LinearSegmentedColormap.from_list('sm', ((1,0.95,0.7), (0.9,0.75,0.6), (0.3,0.5,1), (0,0,0.4)), N=60)

dpi = 150
size = (width/dpi, height/dpi)
fig = plt.figure(1, size, dpi=dpi)

arr = np.ones((10,10))/float(2)
arr[0,0] = 0

ax = plt.axes(frameon=False)
ax.get_xaxis().tick_bottom()
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
im = ax.imshow(arr, cmap=cmap)
ax.cla()

cbax = fig.add_axes([0.08, 0.05, 1, 0.9])
cbax.set_axis_off()
cb = plt.colorbar(im, ax=cbax, fraction = 1, aspect = 8, label = 'cm$^3$ cm$^-3$', spacing = 'proportional')
cb.set_ticks([0, 0.1, 0.2, 0.3, 0.4, 0.5])

fig.savefig('vwc_colorbar.png', dpi=dpi)

Python links

• Learn Python: https://pythonbasics.org/
• Python Tutorial: https://pythonprogramminglanguage.com