SRTM .hgt files are freely available at http://dds.cr.usgs.gov/srtm/version2_1
Once downloaded, a single tile (1 by 1 degree) is coded as a simple matrix of 1201 by 1201 binary int16 values, big-endian. No header. Integer values represent elevations in meter. -32768 value means "no data".
For SRTM1 tiles (USA territories), tiles are 3601 by 3601.
That's all. See online documentation for further details but this is easily readable in any language.
I joined Matworks today only, while searching for some help on extracting height from SRTM file, and happen to catch your link. Though i have not worked on MATLAB, is there any other way ( say in VB.NET) to capture the height from SRTM .hgt.
Yes, you missed the required version of Matlab (2014a) which contains a new function "strjoin".
I just updated the script to improve compatibility with older versions of Matlab. Please let me know.