Changing colourmap with user input - specifying number of colours

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BGranato
BGranato 2019-1-6
编辑： Stephen23 2019-1-7
I'm making an app with app designer to view spectrograms. I then want to save the spectrogram using the colour map specified by the user.
This is my current code:
imwrite( ind2rgb( im2uint8( flipud( soundData), pink(128))));
However, I want to be able to change the colour map according to the user's preference. I have tried not specifying the number of colours or making everything into a string (e.g. ['jet' (128)], 'jet(128)', 'jet'), but none of these work.
Any ideas?

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采纳的回答

Stephen23
Stephen23 2019-1-7
编辑：Stephen23 2019-1-7
Use str2func:
str = 'pink';
fun = str2func(str);
fun(128)

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