In the present version frameno must be the next frame to be read. Reads an integer, a float or a string from the header of the CM file specified by filename . The file should not be open , it will be opened and then closed again by these calls. These are private functions, only intended to be used by me . If a column is passes to readCmOpen , but it is not present in the file, no error is generated if one attempts to read that data later.
Garbage is returned.
Fix the above-mentioned bug. Use seek to skip forward in file when reading many frames at once. Make it possible to call readCmOpen without prior knowledge of which columns to expect.