How can I plot NaN values as a special color with imshow in matplotlib?

by

Hrm, it appears I can use a masked array to do this:

masked_array = np.ma.array (a, mask=np.isnan(a))
cmap = matplotlib.cm.jet
cmap.set_bad('white',1.)
ax.imshow(masked_array, interpolation='nearest', cmap=cmap)

This should suffice, though I’m still open to suggestions. :]

More Related Contents:

  1. matplotlib/seaborn: first and last row cut in half of heatmap plot
  2. How to get different colored lines for different plots in a single figure?
  3. multiple axis in matplotlib with different scales [duplicate]
  4. How to maximize a plt.show() window using Python
  5. How to make two plots side-by-side using Python?
  6. Fill between two vertical lines in matplotlib [duplicate]
  7. How to plot multiple dataframes in subplots
  8. How to filter in NaN (pandas)?
  9. Fitting a Normal distribution to 1D data
  10. Matplotlib plot with variable line width
  11. Problem in combining bar plot and line plot (python)
  12. Seaborn: countplot() with frequencies
  13. Bar Chart: How to choose color if value is positive vs value is negative
  14. cx_Freeze converted GUI-app (tkinter) crashes after pressing plot button
  15. How to change the text color of font in legend?
  16. Parallel Coordinates plot in Matplotlib
  17. Why set_xticks doesn’t set the labels of ticks?
  18. Using Matplotlib 3D axes, how to drag two axes at once
  19. Custom logarithmic axis scaling in matplotlib
  20. How to add group labels for bar charts
  21. How to update matplotlib’s imshow() window interactively?
  22. Plotting time in with Matplotlib
  23. trouble aligning ticks for matplotlib twinx axes
  24. Getting vertical gridlines to appear in line plot in matplotlib
  25. Understanding matplotlib: plt, figure, ax(arr)?
  26. Plotting a line over several graphs
  27. Matplotlib: Add colorbar to non-mappable object
  28. When is plt.show() required to show a plot and when is it not?
  29. color of a 3D surface plot in python
  30. matplotlib: render into buffer / access pixel data

Leave a Comment