Write test for plot_heatmap #378
Description
- Write tests for the function
- Add
plot_showparameter and return thematplotlib.axes.Axesobject of the plot (seepostreise.plot.plot_tornado) so user can further modify the plot.
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plot_show parameter and return the matplotlib.axes.Axes object of the plot (see postreise.plot.plot_tornado) so user can further modify the plot.