Text labeling with contourfm colorbar

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George Lavidas
George Lavidas 2020-1-22
评论： George Lavidas 2020-1-22
Hello All,
I have been trying to label a colorbar with text with a figure resulted from the contourfm, while I do have some success I cannot get the first text value to appear.
with a simple contourf it does show up but when i plot with contourfm then it misses values.
What I am after is for the colorbar to include all legend_Names2, staring with the first one on the far left.
I attach the following working code snippet
Data= magic(2); % mock data
legend_Names2={'Opt1','Opt2','Opt3','Opt4'}; % mock legend strings
%
R = georasterref('RasterSize', size(Data),'Latlim',[30 31], 'Lonlim', [2 3]);
contourfm(double(Data),R,'edgecolor','none')
colormap(flipud(jet(max(max(Data)))));
cbh=colorbar('southoutside');
cbh.XTick = [floor(min(xlim(cbh))):1:ceil(max(xlim(cbh)))]; % create Colobar ticks incrementaly by 1
cbh.TickLabels=legend_Names2;
test_controufm.png
Thank you all in advance.

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采纳的回答

Githin John
Githin John 2020-1-22
The value of floor(min(xlim(cbh))) evaluates to 1. The min value of the colorbar is 1.25. So the Tick for 1 is outside the colorbar and hence not visible.
Try
cbh.XTick = linspace(min(xlim(cbh)),ceil(max(xlim(cbh))),4);
or something similar.
  1 个评论
George Lavidas
George Lavidas 2020-1-22
Hello John,
Thank you very much, it works.
But if i may i have only a small question, just to clear it in my mind.
The matrix i have starts from 1 and that is why i used the floor() function, however you are totally right that the xbh lim is 1.25.
But in any case thank you very much, for the swift response.
Kind regards,
George

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