How can I get the sea ice concentration data corresponding to the latitude and longitude from the geotiff file?

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Bei JIANG
Bei JIANG 2021년 10월 18일
댓글: Bei JIANG 2021년 10월 19일
Hello,
I got daily sea ice concentration data from https://nsidc.org/data/G02135/versions/3(please see attachment), but the file is in geotiff format, and I don’t know about geotiff format. I don't know how to get sea ice concentration data corresponding to longitude and latitude from geotiff?
Hope to get your help! Thank you very much!
Bei.

채택된 답변

KSSV
KSSV 2021년 10월 18일
filename = 'N_20180101_concentration_v3.0.tif' ;
[A,R] = readgeoraster(filename) ; % If not try geotiffread
[m,n] = size(A) ;
x = linspace(R.XWorldLimits(1),R.XIntrinsicLimits(2),n) ;
y = linspace(R.YWorldLimits(1),R.YIntrinsicLimits(2),m) ;
[X,Y] = meshgrid(x,y) ;
figure(1)
mapshow(A,R)
figure(2)
pcolor(X,Y,A);
shading interp ;
  댓글 수: 6
Bei JIANG
Bei JIANG 2021년 10월 19일
There are two lines wrong in your answer, corrected as follows :
filename = 'N_20180101_concentration_v3.0.tif' ;
[A,R] = readgeoraster(filename) ; % If not try geotiffread
[m,n] = size(A) ;
x = linspace(R.XWorldLimits(1),R.XWorldLimits(2),n) ;
y = linspace(R.YWorldLimits(1),R.YWorldLimits(2),m) ;
[X,Y] = meshgrid(x,y) ;
figure(1)
mapshow(A,R)
figure(2)
pcolor(X,Y,A);
shading interp ;

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