mask area outside a shapefile
6 ビュー (過去 30 日間)
古いコメントを表示
I am trying to mask data (lon,lat,data) outside a shape file, 'shp1'. I used top use arcgis for masking data but would prefer matlab for these actions.
the code below is non responsive
dx=d(:,:,1); %%%%d is a 80x80 data lat=(0:0.5:39.5)'; %%%%lat of the data lon=(60:0.5:99.5); %%%%lon of the data % lony=lony'; laty=repmat(lat,1,80); lony=repmat(lon,80,1); %%%%80x80 lon of the data laty=flipud(laty); %%%%80x80 lat of the data
%%%read shapefile shp1=shaperead('C:\shpfiles\IND_adm0.shp'); lon1 = [shp1.X]'; lat1 = [shp1.Y]'; %%%mask try rx = shp1.X(1:end-1); ry = shp1.Y(1:end-1); mask=inpolygon(lon1,lat1,rx,ry); contourf(lon1,lat1,dx);
1 件のコメント
Vijay Sagar
2023 年 3 月 24 日
編集済み: Vijay Sagar
2023 年 3 月 24 日
Your code is correct. Just replace in the last line lon1 and lat1 with lony and laty respectevely. Or you can use insidepoly or maskregion function.
回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Author Block Masks についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!