How to insert a colorbar to a geobubble

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TESFALEM ALDADA 2022-5-30

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https://ww2.mathworks.cn/matlabcentral/answers/1730115-how-to-insert-a-colorbar-to-a-geobubble

评论： TESFALEM ALDADA 2022-6-14

I wanted to show a colorbar to the geobubble created for a certain dataset. The code provided below shows only the legend however, when i try adding a colorbar it doesnot add.

gauged_cat = readtable('gaugedQ1.xlsx');
gauged_cat.AreaKM2 = categorical(gauged_cat.AreaKM2);
gb = geobubble(gauged_cat,'LAT','LON','ColorVariable','AreaKM2');
gb.BubbleColorList = flipud(copper(12)); % for coloring
geolimits([2 18],[33 50])

I need the colorbar of AreaKM2 from the minimum to the maximum range but the legend shows all the points. Any one who can show me how it works is highly appreaciated.

Thank you

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Answer 1

Yang 2022-6-7

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https://ww2.mathworks.cn/matlabcentral/answers/1730115-how-to-insert-a-colorbar-to-a-geobubble#answer_980915

在 MATLAB Online 中打开

Hi,

You may use geoscatter instead, and then add colorbar.

gauged_cat = readtable('gaugedQ1.xlsx');
A = 30; % marker size
C = gauged_cat.AreaKM2; % marker color
geoscatter(gauged_cat.LAT, gauged_cat.LON, A, C,'filled','MarkerEdgeColor','w');
colormap(flipud(copper));
geolimits([2 18],[33 50]);
cbh = colorbar;
cbh.Title.String = "Area (km^2)";
cbh.Ruler.Exponent = 0;