K Means Group Colours

Hi,

I have performed K-means cluser analysis on my images, and visualised the results using imagesc() function, and used a parula colourmap. Is there a way to know which colour has been assigned to each k-value? For example, I might want the k group of all the pixels that are coloured yellow, but I am not sure which k=x group the yellow refers to.

If I try to plot the average spectra of each k group, it is plotted using differing colours to what it used for the cluser images, which is frustrating. I am using ks of up to 20 so it's very hard to see what has been assigned to what easily!

Thanks in advance.

[Adam Danz]

Are you using the kmeans idx output to scale the color? Could you show us how you're using the kmeans outputs in imagesc?