Use the same scale for multiple geodensityplots.

Question

Fausto André Valenzuela 2021-7-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/875708-use-the-same-scale-for-multiple-geodensityplots

评论： mahmoud ayyad 2022-9-25

I'm coding a program to show how solar irradiance varies throughout the year (it's monthly based), so I need to create 12 graphs, each showing the solar irradiance in that specific month. I want the color scheme to vary throughout the year using the same scale in all the graphs, so color can be visually representative, and the viewer can compare the graphs just by looking at them. To sum it up, they all should look like heatmaps with the same scale.

My data structure is a table of 80x14. The first two columns are global coordinates (latitude and longitude), the next 12 columns are the monthly values of solar irradiance. Rows represent irradiance values per location coordinates.

This is the base structure of each plot

figure(1)
lat1 = [Heatmaps.Latitudphi];
lon1 = [Heatmaps.Longitudepsilon];
dp=geodensityplot(lat1,lon1,Heatmaps.Jan,'Radius',35e3)
geobasemap darkwater
colormap turbo
dp.FaceColor = 'interp';

Heatmaps.Jan is my data vector (I think it's called weight in the function argument), and Heatmaps is a table with the structure mentioned above. Plot(2) uses Heatmaps.Feb and so on.

I read somewhere in the forums that caxis might do the trick, but so far, I have not be able to make it work.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

mahmoud ayyad 2022-9-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/875708-use-the-same-scale-for-multiple-geodensityplots#answer_1060475

在 MATLAB Online 中打开

Hello

caxis does the trick.

you have to do it manually. First of all, you have to identify the color range (minimum and maximum values) that you want all the 12 figures follow. Then after every plot, you have to specify the range manually. For example:

you know that the range should be from 0 to 1e-3. Then,

figure(1)
lat1 = [Heatmaps.Latitudphi];
lon1 = [Heatmaps.Longitudepsilon];
dp=geodensityplot(lat1,lon1,Heatmaps.Jan,'Radius',35e3)
geobasemap darkwater
colormap turbo
dp.FaceColor = 'interp';
caxis([0 1e-3]) % defining the pre-defined range
figure(2)
lat1 = [Heatmaps.Latitudphi];
lon1 = [Heatmaps.Longitudepsilon];
dp=geodensityplot(lat1,lon1,Heatmaps.Feb,'Radius',35e3)
geobasemap darkwater
colormap turbo
dp.FaceColor = 'interp';
caxis([0 1e-3]) % defining the pre-defined range
figure(3)
lat1 = [Heatmaps.Latitudphi];
lon1 = [Heatmaps.Longitudepsilon];
dp=geodensityplot(lat1,lon1,Heatmaps.Mar,'Radius',35e3)
geobasemap darkwater
colormap turbo
dp.FaceColor = 'interp';
caxis([0 1e-3]) % defining the pre-defined range