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import numpy as np
def hex_to_rgb(value):
"""
Calculates rgb values from a hex color code.
:param (string) value: Hex color string
:rtype (tuple) (r_value, g_value, b_value): tuple of rgb values
"""
value = value.lstrip("#")
hex_total_length = len(value)
rgb_section_length = hex_total_length // 3
return tuple(
int(value[i : i + rgb_section_length], 16)
for i in range(0, hex_total_length, rgb_section_length)
)
viridis = [
[0, "#440154"],
[0.06274509803921569, "#48186a"],
[0.12549019607843137, "#472d7b"],
[0.18823529411764706, "#424086"],
[0.25098039215686274, "#3b528b"],
[0.3137254901960784, "#33638d"],
[0.3764705882352941, "#2c728e"],
[0.4392156862745098, "#26828e"],
[0.5019607843137255, "#21918c"],
[0.5647058823529412, "#1fa088"],
[0.6274509803921569, "#28ae80"],
[0.6901960784313725, "#3fbc73"],
[0.7529411764705882, "#5ec962"],
[0.8156862745098039, "#84d44b"],
[0.8784313725490196, "#addc30"],
[0.9411764705882353, "#d8e219"],
[1, "#fde725"],
]
# Define the power parameter for the transformation
power = 0.23 # You can adjust this value as needed
# Apply the power transformation to the values in the colorscale
for i in range(len(viridis)):
viridis[i][0] = np.power(viridis[i][0], power)
# Normalize the transformed values to [0, 1]
max_value = max(v[0] for v in viridis)
for i in range(len(viridis)):
viridis[i][0] /= max_value
# Sort the colorscale by the normalized values
viridis.sort(key=lambda x: x[0])
viridis_rgb = [[x[0], "rgb" + str(hex_to_rgb(x[1]))] for x in viridis]
# reverse the colorscale
viridis_rgb = [[x[0], y[1]] for x, y in zip(viridis_rgb, viridis_rgb[::-1])]
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