Plotting in contoursclice/slice

Hi, I am having

longitude=-180:5:180;latitude=-90:5:90;Data= matrix[73x37]. Like this I am having 12 matrixs.

I want to plot each matrix on global map (https://www.asu.cas.cz/~bezdek/vyzkum/rotating_3d_globe/figures/elevation_2d_map_Geoid_height_EGM2008_nmax500_BlueWhiteOrangeRed_px0650_pacific.png)

with 4 maps in single image (similar to contourslice/sclie function).

Please assist me how to plot the data.

Thanking you

Answer 1

[Arka]

Hi,

You can use the geoshow function to plot the data on the global map.

This is the process of doing it:

1. Merge the data matrices into one cell array in MATLAB
2. Load the map PNG into MATLAB using imread function

map = imread('path/to/map.png');

3. Create a new figure and set its size to the dimensions of the map like so:

figure('Units', 'pixels', 'Position', [0 0 size(map,2)*2 size(map,1)*2]);

4. Loop over the cell array of data matrices, and use geoshow to plot the data on the map. You can also use subplot or tiledlayout to have multiple maps in a single image.

for i=1:12
    subplot(x,y,j); %replace x and y with the desired layout, and j with the map number you are referring to
    geoshow(latitude, longitude, data{i}, 'DisplayType', 'texturemap');
    hold on;
    imshow(map);
end

geoshow displays the data as a texture on top of the map, and imshow displays the map in the background.

To learn more about geoshow and imshow, you can refer to the MathWorks documentations linked below:

https://www.mathworks.com/help/map/ref/geoshow.html

https://www.mathworks.com/help/images/ref/imshow.html

Answer 2

[Shaik Ghouse Basha]

Thank you for your reply.

This function didn't work for me.

M1=imread('Map01.png');

figure('Units', 'pixels', 'Position', [0 0 size(M1,2)*2 size(M1,1)*2]);

for i=1:4

subplot(4,1,i); %replace x and y with the desired layout, and j with the map number you are referring to

geoshow(pr(:,1), lo, Ez2{i}, 'DisplayType', 'texturemap');

hold on;

imshow(M1);

end

I need plot similar to the which I have attached.

[Arka]

Is it possible for you to share the matrices and arrays that you are using? It will be easier for me to test the code on my end and help you out better.

Answer 3

[Shaik Ghouse Basha]

I have uploded the data sets. Please check