Plotting an image in a geospatial domain given Lat and Lon information

Dear all,

After trying everything and more, it is time to give up and ask for your help.

I do have a matrix of Lat values, a matrix of Lon values, and a matrix of actual data. I need to display this in a geospatial domain, overlaying a Shapefile. Additionally, it is essential for me to add a scale bar. I have tried, geoshow, goeplot, mapshow, worldmap, and probably something else too, but every time there is something that goes wrong (i.e., Adding GeographicAxes to axes is not supported, etc.).

The best I achieved was:

close all
clc

figure
geoshow(LAT, LON, DATA, 'DisplayType', 'texturemap');
mapshow(SHP, 'FaceColor', 'none', 'EdgeColor', 'black', 'LineWidth', 1.5);
colormap gray

The problem with the code above is that nothing is georeferenced and, as such, it is impossible for me to add a scale bar.

Could you please help me make a nice georeferenced map?

Any help would be greatly appreciated.

I have attached the LAT, LON, DATA, and SHP.

Thanks a lot in advance

[Umar]

Hi Simone,

Unfortunately, I am not able to afford Mapping Toolbox required for geoshow. Here is the example code snippet to help you out.

% Load the provided data

load('LAT.mat');

load('LON.mat');

load('DATA.mat');

load('SHP.mat');

% Create a new figure for the map

figure;

% Display the geospatial data with proper georeferencing

geoshow(DATA, [LAT(1) LAT(end)], [LON(1) LON(end)], 'DisplayType', 'texturemap');

% Overlay the Shapefile with specified properties

mapshow(SHP, 'FaceColor', 'none', 'EdgeColor', 'black', 'LineWidth', 1.5);

% Add a scale bar to the map

scalebar;

% Customize the colormap for better visualization

colormap gray;

% Add a title to the map

title('Georeferenced Map with Scale Bar');

% Display a colorbar for reference

colorbar;

If you follow my mentioned steps, it will help resolve your issue. You already know how to load the provided Latitude, Longitude, data, and Shapefile matrices into the workspace. Then, create a new figure to display the georeferenced map. The geoshow function is used to display the actual data on the map with proper georeferencing based on the provided Latitude and Longitude ranges, for

For more information on this function, please refer to

https://www.mathworks.com/help/map/ref/geoshow.html?s_tid=doc_ta

use the mapshow function to overlay the Shapefile on the map with specified visual properties like EdgeColor and LineWidth. For more information on this function, please refer to

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

Then, adds a scale bar to the map for reference by using scale bar function,the colormap is used set to grayscale for better visualization of the data , for more information on this function, please refer to

https://www.mathworks.com/help/matlab/ref/colormap.html?s_tid=doc_ta

then add a title to the map for identification, and you will see a colorbar displayed to indicate the data range. Hope, this should help resolve your problem and answers your question.