[AstroPy] APLpy color bar for markers

[Ke Wang]

Hi,

This should be a simple question, but I just don't find an obvious solution:

I use APLpy to plot a FITS image with nice wcs coordinates support, and
overlay color coded markers:

fig = aplpy.FITSFigure('image.fits')
fig.show_colorscale(cmap='gray')
fig.show_markers(ra, dec, c=velocity, cmap='rainbow')
fig.add_colorbar()

This will plot a gray color bar (for the image). But I want to display the
rainbow (for markers). Any idea would be appreciated.

Cheers,
Ke
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