How can I set colours in contourfm and contourcmap to create a common colorbar for three maps with different minimum and maximum values?

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Szabó-Takács Beáta 2016-6-24

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https://ww2.mathworks.cn/matlabcentral/answers/292094-how-can-i-set-colours-in-contourfm-and-contourcmap-to-create-a-common-colorbar-for-three-maps-with-d

Dear All, I have three maps which have different minimum and maximum values. I attached the maps(fig1, fig2, fig3). I created them by:

worldmap('Europe');
load coast;
plotm(lat, long, 'k');
clear lat long;
lat=load(lat.mat);
contourfm(lat,lon,IU2,40:20:120);
contourcmap('hot','Colorbar','on', 'Location','horizontal', 'TitleString', 'PET(mm/month)')

I would like to set the colors in same interval and create a common colorbar for them. For example set the values range in 40:20:120 and the colour hot(6). So I would like show the change of the values in fig2 and fig3 compare to fig1.

I would appreciated if someone hepled me!