Package: matlab.io.hdfeos.gd
Read Block SOM offset
offset = readBlkSomOffset(GID)
offset = readBlkSomOffset(GID) reads the
block SOM offset values, in pixels, from a standard SOM (Space Oblique
Mercator) projection. offset is a vector of offset
values for SOM projection data. This routine can only be used with
grids that use the SOM projection.
This function corresponds to the GDblkSOMoffset function
in the HDF-EOS library C API.
import matlab.io.hdfeos.* gfid = gd.open('myfile.hdf','create'); lowright = [30521379.68485 1152027.64253]; upleft = [-11119487.42844 8673539.24806]; gridID = gd.create(gfid,'SOM',120,60,upleft,lowright); projparm(1) = 6378137; projparm(2) = 0.006694348; projparm(4) = 98096360; % 98.161 in DDDMMMSSS projparm(5) = 87069061; % 87.112 in DDDMMMSSS projparm(9) = 0.068585416*1440; projparm(10) = 0.0; projparm(12) = 6; gd.defProj(gridID,'som',[],[],projparm); gd.writeBlkSomOffset(gridID,[5 10 12 8 2]); gd.detach(gridID); gd.close(gfid); gfid = gd.open('myfile.hdf'); gridID = gd.attach(gfid,'SOM'); blk = gd.readBlkSomOffset(gridID); gd.detach(gridID); gd.close(gfid);