5d272e9b
 David Mayerich
added matlab files
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function EID = rtsEnviOpen(filename, headername, mask)
%opens an ENVI file and returns an ID structure
% filename = name of ENVI file
% headername = name of ENVI header
% FID = structure containing file information
% mask = binary image specifying valid spectra
%assign the mask variable
if(nargin < 3)
mask = 1;
end
%open the file and save the file ID
fid = fopen(filename, 'r');
%open the ENVI header file
header = enviLoadHeader(headername);
%this is currently only valid for BIP files
if(~strcmp(header.interleave, 'bip'))
disp('Error: This function only works for BIP interleave files. Load in ENVI and convert.');
end
if(header.data_type ~= 4)
disp('Error: This function only works for floating-point files.');
end
EID = enviID;
EID.fid = fid;
EID.header = header;
EID.mask = mask;
EID.fpos = 0;
%EID = struct('fid', fid, 'header', header, 'mask', mask, 'fpos', 0);
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