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colab
import matplotlib.pyplot as plt import seaborn as sns import numpy as np import tikzplotlib from matplotlib.colors import LinearSegmentedColormap # Define the custom colormap colors = [(0, '#ff0000'), (0.25, '#ff8247'), (0.5, '#ffffff'), (0.75, '#ffc100'), (1, '#ff9c05')] cmap_name = 'my_custom_cmap' cmap = LinearSegmentedColormap.from_list(cmap_name, colors, N=256) # Generate some sample data for the heatmap data = np.random.rand(10, 10) fig, ax = plt.subplots() sns.heatmap( data, ax=ax, center=0.0, cmap=cmap, cbar_kws={"label": "Scale"}, ) ax.set_xlabel("x") ax.set_ylabel("y") ax.set_title("title") plt.show() tikzplotlib.save("heatmap_custom_colormap.tex", fig)
gives an error
--------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-9-e79bfff78935> in <cell line: 31>() 29 ax.set_title("title") 30 plt.show() ---> 31 tikzplotlib.save("heatmap_custom_colormap.tex", fig) 32 6 frames /usr/local/lib/python3.10/dist-packages/tikzplotlib/_save.py in save(filepath, encoding, *args, **kwargs) 260 :returns: None 261 """ --> 262 code = get_tikz_code(*args, filepath=filepath, **kwargs) 263 with open(filepath, "w", encoding=encoding) as f: 264 f.write(code) /usr/local/lib/python3.10/dist-packages/tikzplotlib/_save.py in get_tikz_code(figure, filepath, axis_width, axis_height, textsize, tex_relative_path_to_data, externalize_tables, override_externals, externals_search_path, strict, wrap, add_axis_environment, extra_axis_parameters, extra_groupstyle_parameters, extra_tikzpicture_parameters, extra_lines_start, dpi, show_info, include_disclaimer, standalone, float_format, table_row_sep, flavor) 211 212 # gather the file content --> 213 data, content = _recurse(data, figure) 214 215 # Check if there is still an open groupplot environment. This occurs if not /usr/local/lib/python3.10/dist-packages/tikzplotlib/_save.py in _recurse(data, obj) 337 338 if isinstance(child, mpl.axes.Axes): --> 339 ax = _axes.Axes(data, child) 340 341 if ax.is_colorbar: /usr/local/lib/python3.10/dist-packages/tikzplotlib/_axes.py in __init__(self, data, obj) 157 colorbar = _find_associated_colorbar(obj) 158 if colorbar: --> 159 self._colorbar(colorbar, data) 160 161 if self.is_subplot: /usr/local/lib/python3.10/dist-packages/tikzplotlib/_axes.py in _colorbar(self, colorbar, data) 420 colorbar_styles.append("ylabel={" + colorbar_ylabel + "}") 421 --> 422 mycolormap, is_custom_cmap = _mpl_cmap2pgf_cmap( 423 colorbar.mappable.get_cmap(), data 424 ) /usr/local/lib/python3.10/dist-packages/tikzplotlib/_axes.py in _mpl_cmap2pgf_cmap(cmap, data) 670 cmap, mpl.colors.ListedColormap 671 ), "Only LinearSegmentedColormap and ListedColormap are supported" --> 672 return _handle_listed_color_map(cmap, data) 673 674 /usr/local/lib/python3.10/dist-packages/tikzplotlib/_axes.py in _handle_listed_color_map(cmap, data) 792 } 793 for mpl_cm, pgf_cm in cm_translate.items(): --> 794 if cmap.colors == plt.get_cmap(mpl_cm).colors: 795 is_custom_colormap = False 796 return (pgf_cm, is_custom_colormap) ValueError: operands could not be broadcast together with shapes (256,4) (256,3)
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Note that removing the explicit fig object gets rid of the error
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colab
gives an error
The text was updated successfully, but these errors were encountered: