I'm trying to convert a 1 dimension lat,lon,data to 2d data without interpolating (without griddata command). Is this possible?

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DIPENDRA007 on 24 Jul 2021
Edited: Chunru on 25 Jul 2021
I have a one dimensional latitude,longitude, data. Essentially all are in one dimension. However I want to create a 2D plot with the data.
So, what I want is the data should be in 2D format without using the griddate which uses interpolation. So, in 2D format of data there should be original value of 1D data present at every original latitude, longitude point and other points it will be NaN or zero.

Accepted Answer

Chunru on 24 Jul 2021
Edited: Chunru on 25 Jul 2021
Updated solution:
T1 = readtable('chiranjit Das DAY_1.xlsx');
dg = 1;
longrid = (-180:dg:180);
latgrid = (-90:dg:90);
z = nan(length(latgrid), length(longrid));
for ilat=1:length(latgrid)
for ilon=1:length(longrid)
ii = T1.LATITUDE-latgrid(ilat)>=-dg/2 & T1.LATITUDE-latgrid(ilat)<dg/2 & ...
T1.LONGITUDE-longrid(ilon)>=-dg/2 & T1.LONGITUDE-longrid(ilon)<dg/2;
z(ilat, ilon) = mean(T1.DATA(ii));
imagesc(longrid, latgrid, z);
axis xy
cmap = turbo(1024); cmap = cmap(257:768,:);
ax = axesm('MapProjection','apianus','MapLatLimit',[-90 90], 'MapLonLimit', [-180 180]);
[lon, lat] = meshgrid(longrid, latgrid);
geoshow(ax, lat, lon, z, cmap , 'DisplayType', 'image')
Your description of the problem is not detailed. Is this what you want?
n = 100;
lat = rand(n, 1);
lon = rand(n, 1);
z = rand(n, 1);
stem3(lon, lat, z);
xlabel('lon'); ylabel('lat'); zlabel('z');

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