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Heat Maps with Text

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Heat Maps with Text


Robert Henson (view profile)


09 Aug 2007 (Updated )

Heat maps with numeric values overlayed

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A number of people have asked me whether MATLAB can add text to heatmaps to show the exact values. This is very easy to do, however, making a the text robust to resizing, zooming and other operations is a little trickier.
This example shows how to add text to the heatmap and also includes an M-file that shows how to handle zooming and resizing.

MATLAB release MATLAB 7.4 (R2007a)
Other requirements This was created with R2007a but should run with version back to R14.
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Comments and Ratings (5)
21 Aug 2014 Casper S√łnderby

Great function. Line 88 could be changed to something like:
textHandles(j,i) = text(j,i,sprintf(['%.' num2str(precision) 'f'],data(i,j)),...

Then the numeric precision is counting from the decimal point

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21 Sep 2011 Tristan

Is there a way to make this function robust to a change of figure units to centimeters?

23 Mar 2011 none

none (view profile)

PS. to be able to use XtickLabel etc to name the axis after making this image, type "axis on"

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23 Mar 2011 none

none (view profile)


17 Aug 2007 Dimitri Shvorob

Useful, instructive, and nicely presented.

23 Jul 2013

Added BSD license

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