nitfReadMetaNumeric.m
d19d4d820af0master

nitfReadMetaNumeric.m
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			function meta = nitfReadMetaNumeric(meta, fieldsTable, fid)
			%nitfReadMetaNumeric Append attributes to metadata structure.
			% OUTMETA = nitfReadMetaNumeric(INMETA, FIELDSTABLE, FID) reads
			% numeric attributes from the file with handle FID and append it to
			% INMETA the metadata structure. The FIELDSTABLE cell array contains
			% details about the attributes:
			%
			% * Column 1: short names
			% * Column 2: long names
			% * Column 3: number of elements (not number of bytes)
			% * Column 4: datatype

			% Copyright 2009 The MathWorks, Inc.

			% For the sake of performance, pre-allocate storage for the new
			% attributes and then insert attributes into the pre-sized struct array.
			% Use "offset" to facilitate adding the new attributes.
			metaOffset = numel(meta);
			numToAppend = size(fieldsTable, 1);

			meta(metaOffset + numToAppend).value = '';

			% As an optimization, convert the lengths part of the cell array to a
			% numeric array.
			dataLengths = [fieldsTable{:,3}];

			% Read and insert the new attributes.
			for p = 1:numToAppend

			meta(metaOffset + p).name = fieldsTable{p,1};
			meta(metaOffset + p).vname = fieldsTable{p,2};
			meta(metaOffset + p).value = fread(fid, dataLengths(p), fieldsTable{p,4}, 'ieee-be');

			end