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function [img,sizeinfo] = pgmread(filename)
% function img = pgmread(filename)
% this is my version of pgmread for the pgm file created by XV.
%
% this program also corrects for the shifts in the image from pm file.
fname_header = sprintf('%s.h01',filename);
fname_data = sprintf('%s.i01',filename);
fid = fopen(fname_header,'r');
done = 0;
while done~=3,
cmt = fgets(fid)
if (findstr(cmt,'!matrix size[1]')),
nc = sscanf(cmt,'!matrix size[1] :=%d');
done = done+1;
elseif (findstr(cmt,'!matrix size[2]')),
nr = sscanf(cmt,'!matrix size[2] :=%d');
done = done+1;
elseif (findstr(cmt,'!matrix size[3]')),
ns = sscanf(cmt,'!matrix size[3] :=%d');
done = done+1;
end
end
fclose(fid);
fid = fopen(fname_data,'r');
%img = fscanf(fid,'%d',size);
%img = img';
img = fread(fid,nc*nr*ns,'uint8');
img = reshape(img,nc,nr,ns);
sizeinfo(1) = nr;
sizeinfo(2) = nc;
sizeinfo(3) = ns;
fclose(fid);
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