seth3dcompression

Sets compression level of the h3d file, which applies to further writings into the file.

Attention: Valid only with Altair CAE Readers and Writers Extension.

Syntax

seth3dcompression(fid, compression_level)

Inputs

fid
Integer representing the file ID, returned from createh3dfile().
Type: integer
compression_level
Valid compression level is 2 to 9. A lower compression level increases the file size but reduces the writing time. A higher compression level reduces the file size and increases the writing time.
Type: integer

Examples

Create two H3D files with different compression level:

	  % File : test.oml
	clear all; close all; clc;
	num_time = 1000;
	data=ones(900000,num_time);

	x=cell(1,num_time);
	for i=1:num_time
		x(1,i)=[num2str(i)];
	end

	h3dfilepath=fileparts(omlfilename('fullpath'));
	filename = fullfile(h3dfilepath,'test1.h3d');

	fid = createh3dfile(filename);
	seth3dcompression(fid,2);
	tic
	sid1 = createh3dsubcase(fid,'subcase1', x);
	dtix1 = createh3ddatatype(fid, 'stess', 'scalar', 'elem');
	writeh3ddata(fid,sid1,[1:num_time],dtix1,0,0, [1:900000] , data);
	closeh3dfile(fid);
	time_test1h3d=toc


	filename = fullfile(h3dfilepath,'test2.h3d');

	fid = createh3dfile(filename);
	tic
	seth3dcompression(fid,7);
	sid1 = createh3dsubcase(fid,'subcase1',x);
	dtix1 = createh3ddatatype(fid, 'stess', 'scalar', 'elem');
	writeh3ddata(fid,sid1,[1:num_time],dtix1,0,0, [1:900000] , data);
	closeh3dfile(fid);
	time_test2h3d=toc