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Add Spectral-like colormaps based on pyart#1320 #1325

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merged 2 commits into from
Nov 16, 2022
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Add Spectral-like colormaps based on pyart#1320 #1325

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d171629
Add Spectral-like colormaps based on pyart#1320
jthielen Nov 10, 2022
3257eef
Add colormaps to example
jthielen Nov 16, 2022
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5 changes: 4 additions & 1 deletion examples/plotting/plot_choose_a_colormap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,10 @@ def plot_color_gradients(cmap_category, cmap_list):
# These colormaps are the most inclusive, and should be used where
# possible.

plot_color_gradients("Colorblind Friendly", ["LangRainbow12", "HomeyerRainbow", "balance"])
plot_color_gradients(
"Colorblind Friendly",
["LangRainbow12", "HomeyerRainbow", "balance", "ChaseSpectral", "SpectralExtended"]
)

######################################
# **Perceptually Uniform Colormaps**
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2 changes: 2 additions & 0 deletions pyart/graph/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,8 @@
* LangRainbow12
* HomeyerRainbow
* balance
* ChaseSpectral
* SpectralExtended

"""

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18 changes: 14 additions & 4 deletions pyart/graph/_cm_colorblind.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,11 +38,21 @@ def yuv_rainbow_24(nc):
# Thyng, K. M., Greene, C. A., Hetland, R. D., Zimmerle, H. M., & DiMarco, S. F. (2016).
# True colors of oceanography. Oceanography, 29(3), 10.

# HomeyerRainbow developed by Cameron Homeyer with assistance from Bobby Jackson


data_dir = os.path.split(__file__)[0]
bal_rgb_vals = np.genfromtxt(os.path.join(data_dir, 'balance-rgb.txt'))


# "Spectral"-like colormaps for radar reflectivity
# ChaseSpectral developed by Randy Chase with assistance from Sam Gardner and Jonathan Thielen
# SpectralExtended developed by Jonathan Thielen based on ChaseSpectral

chase_spectral_rgb_vals = np.genfromtxt(os.path.join(data_dir, 'chase-spectral-rgb.txt'))
spectral_ext_rgb_vals = np.genfromtxt(os.path.join(data_dir, 'spectral-extended-rgb.txt'))


# HomeyerRainbow developed by Cameron Homeyer with assistance from Bobby Jackson

datad = {'HomeyerRainbow': yuv_rainbow_24(15),
'balance': bal_rgb_vals}
'balance': bal_rgb_vals,
'ChaseSpectral': chase_spectral_rgb_vals,
'SpectralExtended': spectral_ext_rgb_vals}
180 changes: 180 additions & 0 deletions pyart/graph/chase-spectral-rgb.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,180 @@
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3.170584348590873569e-01 5.515718708797005126e-02 3.620573876341695585e-01
2.846879783788356377e-01 2.120036336828947862e-02 3.295099346165862864e-01
2.535503873992720481e-01 0.000000000000000000e+00 2.988424429514020542e-01
3 changes: 3 additions & 0 deletions pyart/graph/cm_colorblind.py
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colormaps are available within matplotlib with names pyart_COLORMAP':

* HomeyerRainbow
* balance
* ChaseSpectral
* SpectralExtended
"""

import warnings
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