plot earthquake locations data on a geotiff file
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Anitha Limann
on 17 Oct 2023
Commented: Dyuman Joshi
on 20 Oct 2023
Hello,
I want to plot locations of earthquakes on a base map. I do have a geotiff file that i can use to create a base map but using following code i was unable to map the points on the base map. Please let me know the error in this code.
Data = load('Area_1.txt','-ascii'); % earthquake locations
lon = Data(:,1); lon = 360+lon; % longitude
lat = Data(:,2); % latitude
nv1 = importdata("volcanic.xyz"); % spreading ridge
lon1 = nv1(:,1); % longitude
lat1 = nv1(:,2); % latitude
figure(1); clf; axis equal; hold on;
basemap = readgeoraster("exportImage.tiff");
imshow(basemap);
plot(lon1, lat1,'.'); % spreading ridge
scatter(lon, lat, 15, c,'filled','o','LineWidth', 1, 'MarkerFaceAlpha', 0.9); % earthquake locations
ylabel('latitude (deg)'); xlabel('longitude (deg)');
title(['CMT Depth distribution ', Name])
xlim([min(lon) max(lon)]); ylim([min(lat) max(lat)])
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Accepted Answer
Dyuman Joshi
on 17 Oct 2023
You should be using geoplot, geoscatter and mapshow/geoshow instead of plot(), scatter() and imshow().
If, even after making the above mentioned changes, the code is not working or the output is not as desired, please attach the data files you are working with.
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