First, let me add my praise to that of others. I needed a fast plotting 
program and this was significantly better than matplotlib. This being said, 
I have a small problem that probably has a simple solution but I cannot 
find it.

To get a color map for plotting multiple lines on a graph I currently use 
the following code:

from matplotlib.pyplot import get_cmap
import numpy as np

numofLines = 5
cMapType = 'viridis'
colorMap = get_cmap(cMapType) # get_cmap is matplotlib object     

colorList = np.linspace(0, 1, numofLines) 
lineColors = colorMap(colorList) 

# convert to RGB*255
lineColors = lineColors * 255
lineColors = lineColors.astype(int) 

print lineColors

I would like to get away from using maplotlib for this purpose but cannot 
see how to do this using pyqtgraph. I want to give the user the option to 
use different color maps 'viridis', 'gist_rainbow' etc. I can store the 
colormap data in a file with other data if necessary.

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