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matlab.io.hdfeos.gd.writeBlkSomOffset

Namespace: matlab.io.hdfeos.gd

Write Block SOM offset

Syntax

writeBlkSomOffset(gridID,offset)

Description

writeBlkSomOffset(gridID,offset) writes the block SOM offset values n pixels for a standard Solar Oblique Mercator (SOM) 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. You must take care to use this function properly in conjunction with gd.defProj. The 12th element of the projection parameters must be set to the total number of blocks to be defined. offset starts by listing the offset to the second block, so the 12th element of the projection parameters is always one more than the length of offset.

All fields defined after writing the block SOM offset values will automatically include "SOMBlockDim" as the slowest varying dimension.

This function corresponds to the GDblkSOMoffset function in the HDF-EOS library C API.

Examples

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);

See Also