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h5attput.m
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h5attput.m
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			function h5attput ( h5file, varargin )
			% H5ATTPUT Add HDF5 attribute to existing file.
			%
			% H5ATTPUT(HDFFILE,VARNAME,ATTNAME,ATTVALUE) creates/overwrites the
			% attribute named ATTNAME with the value ATTVALUE. The parent object
			% VARNAME can be either an HDF5 variable or group. VARNAME must be a
			% complete pathname.
			%
			% H5ATTPUT(HDFFILE,ATTNAME,ATTVALUE) does the same thing, but the
			% complete path to the parent object is embedded within ATTNAME.
			%
			% Simple strings will be created in a scalar dataspace.

			% Copyright 2008-2011 The MathWorks, Inc.


			narginchk(3,4)
			nargoutchk(0,0)

			[varname, attname, attvalue] = parse_and_validate_inputs ( h5file, varargin{:} );

			flags = 'H5F_ACC_RDWR';
			plist_id = 'H5P_DEFAULT';

			file_id = H5F.open ( h5file, flags, plist_id );

			[parent_id, parent_obj_is_group] = set_parent_id ( file_id, varname );
			dataspace_id = set_dataspace_id ( attvalue );
			datatype_id = set_datatype_id ( attvalue );
			att_id = set_attribute_id ( parent_id, attname, datatype_id, dataspace_id );


			H5A.write(att_id,datatype_id,attvalue);

			H5T.close(datatype_id);
			H5S.close(dataspace_id);
			H5A.close(att_id);

			if parent_obj_is_group
			H5G.close(parent_id);
			else
			H5D.close(parent_id);
			end

			H5F.close(file_id);


			%===============================================================================
			% SET_ATTRIBUTE_ID
			%
			% Setup the attribute ID. We need to check as to whether or not the attribute
			% already exists.
			function att_id = set_attribute_id ( parent_id, attname, datatype_id, dataspace_id )

			try
			att_id = H5A.open_name ( parent_id, attname );
			catch
			att_id = H5A.create ( parent_id, attname, datatype_id, dataspace_id,'H5P_DEFAULT' );
			end


			%===============================================================================
			% SET_DATASPACE_ID
			%
			% Setup the dataspace ID. This just depends on how many elements the
			% attribute actually has.
			function dataspace_id = set_dataspace_id ( attvalue )

			if ischar(attvalue)
			dataspace_id = H5S.create('H5S_SCALAR');
			else
			dims = size(attvalue);

			if (dims(1) ~= numel(attvalue))
			rank = ndims(attvalue);
			dims = fliplr(size(attvalue));
			else
			rank = 1;
			dims = dims(1);
			end

			dataspace_id = H5S.create_simple ( rank, dims, dims );
			end


			%===============================================================================
			% SET_PARENT_ID
			%
			% If the given variable is "/", then we know we are creating a group attribute.
			% Otherwise try to open the variable as a dataset. If that fails, then it
			% must be a subgroup.
			function [parent_id, parent_obj_is_group] = set_parent_id ( file_id, varname )
			if strcmp(varname,'/')
			parent_obj_is_group = true;
			parent_id = H5G.open ( file_id, varname );
			else
			try
			parent_id=H5D.open(file_id,varname);
			parent_obj_is_group = false;
			catch
			parent_id = H5G.open ( file_id, varname );
			parent_obj_is_group = true;
			end
			end

			%===============================================================================
			% SET_DATATYPE_ID
			%
			% We need to choose an appropriate HDF5 datatype based upon the attribute
			% data.
			function datatype_id = set_datatype_id ( attvalue )
			switch class(attvalue)
			case 'double'
			datatype_id = H5T.copy('H5T_NATIVE_DOUBLE');
			case 'single'
			datatype_id = H5T.copy('H5T_NATIVE_FLOAT');
			case 'int64'
			datatype_id = H5T.copy('H5T_NATIVE_LLONG');
			case 'uint64'
			datatype_id = H5T.copy('H5T_NATIVE_ULLONG');
			case 'int32'
			datatype_id = H5T.copy('H5T_NATIVE_INT');
			case 'uint32'
			datatype_id = H5T.copy('H5T_NATIVE_UINT');
			case 'int16'
			datatype_id = H5T.copy('H5T_NATIVE_SHORT');
			case 'uint16'
			datatype_id = H5T.copy('H5T_NATIVE_USHORT');
			case 'int8'
			datatype_id = H5T.copy('H5T_NATIVE_SCHAR');
			case 'uint8'
			datatype_id = H5T.copy('H5T_NATIVE_UCHAR');
			case 'char'
			datatype_id = H5T.copy('H5T_C_S1');
			H5T.set_size(datatype_id,length(attvalue));
			H5T.set_strpad(datatype_id,'H5T_STR_NULLTERM');
			otherwise
			error(message('images:H5ATTPUT:unsupportedDatatype', class( attvalue )));
			end
			return
			%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
			% PARSE_AND_VALIDATE_INPUTS
			%
			% The VARNAME and ATTNAME values may need to be parsed from one of the inputs,
			% and all but the ATTVALUE input must have their datatypes checked.
			function [varname,attname,attvalue] = parse_and_validate_inputs(hfile,varargin)

			if ~ischar(hfile)
			error(message('images:H5ATTPUT:badFilenameDatatype'));
			end

			if nargin == 3
			varname = varargin{1};
			attvalue = varargin{2};

			slashes = strfind(varname, '/');
			if isempty(slashes)
			error (message('images:H5ATTGET:badAttributePath', varname));
			elseif slashes == 1

			%
			% case of "/attname" is different than "/path/to/attname"
			attname = varname(2:end);
			varname = varname(1);

			else
			attname = varname(slashes(end)+1:end);
			varname = varname(1:slashes(end)-1);
			end

			else
			varname = varargin{1};
			attname = varargin{2};
			attvalue = varargin{3};
			end

			if ~ischar(varname)
			error(message('images:H5ATTPUT:badVarnameDatatype'));
			end

			if ~ischar(attname)
			error(message('images:H5ATTPUT:badAttnameDatatype'));
			end



			return

R8218/CT/private/h5attput.m3761869a7f6dpezhman_excelExport

h5attput.mView Options

R8218/CT/private/h5attput.m
3761869a7f6dpezhman_excelExport

h5attput.m
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