How change the colormap on heatmap??

Hello ,

I'm trying to change the colormap on my heatmap, I'm using right now the '"money" color but I'm want to be blue one, I tried many options without any luck. Any help will be appreciate.

Thanks.

Original

Desire

[Jess Lovering]

Here is a helpful resource for this question. You can make and save any colormap you want throught the colormap editor:

https://www.mathworks.com/help/matlab/ref/colormapeditor.html

[Adam Danz]

This has been answered many times before. Here's a list of heatmap + colormap related Question-answers.

https://www.mathworks.com/matlabcentral/answers/?term=change+colormap+of+heatmap

Answer 1

[Steven Lord]

Change the Colormap property of the heatmap, either when you construct the heatmap:

 h = heatmap(magic(5), 'Colormap', copper);

or afterwards.

h.Colormap = flag;

If none of the predefined colormaps are suitable for your application you can build your own as an M-by-3 matrix, either manually or using the colormapeditor as per Jessica Lovering's comment.

h.Colormap = repmat(linspace(0, 1, 25).', 1, 3);

[Benjamin Kraus]

You can also use the colormap function:

figure
heatmap(magic(5))
colormap(parula)

or

figure
h = heatmap(magic(5))

h = 
  HeatmapChart with properties:

        XData: {5×1 cell}
        YData: {5×1 cell}
    ColorData: [5×5 double]

  Show all properties

colormap(h, parula)

[Steven Lord]

There's also a new colormap named sky introduced in release R2023a that may be of interest if you want a colormap from white or very light blue through dark blue.

heatmap(magic(4))
colormap(sky)