getting the error :Error using ' Transpose on ND array is not defined.:', in the following codelines..pls help.

fprintf(f, 'P5\n%d\n%d\n255\n', cols, rows); fwrite(f, img', 'uint8');

Answer 1

[Roger Stafford]

Apparently the array img has more than two dimensions, so writing its transpose is not well-defined. I would guess its third dimension represents its three colors, red, green, and blue.

Whereas a two-dimensional array has only one other way to rearrange its two dimensions, a three-dimensional array, for example, has five other ways. The matlab command for doing this is appropriately called 'permute', there being as many ways of arranging n dimensions as there are permutations on the numbers from 1 to n. You will have to decide just what it is you wish to happen to the dimensions of img in your fwrite command.

[Rochan Patel]

thank you brother its working...can u also tell me what is the meaning of < tmp.pgm >tmp.key , in the statement, command = [command ' < tmp.pgm >tmp.key'].. Thank you :)