Mercurial > hg > octave-lyh
changeset 15718:d1285ebe60ca
cmpermute.m: Expand to accept indexed image formats uint16 and single.
* cmpermute.m: Expand to accept indexed image formats uint16 and single.
Remove FIXME note.
| author | Rik <rik@octave.org> |
|---|---|
| date | Mon, 03 Dec 2012 08:18:17 -0800 |
| parents | 3d2357969627 |
| children | 20e9b56bbf2f |
| files | scripts/image/cmpermute.m |
| diffstat | 1 files changed, 15 insertions(+), 12 deletions(-) [+] |
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--- a/scripts/image/cmpermute.m +++ b/scripts/image/cmpermute.m @@ -25,8 +25,7 @@ ## When called with only two arguments, @code{cmpermute} randomly rearranges ## the colormap @var{map} and returns a new colormap @var{newmap}. It also ## returns the indexed image @var{Y} which is the equivalent of the original -## input image @var{X} when displayed using @var{newmap}. The input image -## @var{X} must be an indexed image of class uint8 or double. +## input image @var{X} when displayed using @var{newmap}. ## ## When called with an optional third argument the order of colors in the ## new colormap is defined by @var{index}. @@ -44,9 +43,9 @@ print_usage (); endif - ## FIXME: Matlab only accepts 2 types. Expand to uint16 & single?? - if (! (isa (X, "uint8") || isa (X, "double"))) - error ("cmpermute: X must be of class uint8 or double"); + cls = class (X); + if (! any (strcmp (cls, {"uint8", "uint16", "single", "double"}))) + error ("cmpermute: invalid data type '%s'", cls); endif if (! isreal (X) || issparse (X) @@ -71,13 +70,17 @@ rindex = zeros (size (index)); rindex(index) = 1:length (index); - ## adapt indices - if (isa (X, "uint8")) - rindex = uint8 (rindex-1); + ## preserve class of input image in output + if (strcmp (cls, "double")) + Y = rindex(X); + elseif (strcmp (cls, "single")) + rindex = single (rindex); + Y = rindex(X); + else + ## adapt indices + rindex = feval (cls, rindex - 1); ## 0-based indices - Y = rindex(double (X) + 1); - else - Y = rindex(X); + Y = rindex(single (X) + 1); endif endfunction @@ -126,7 +129,7 @@ ## Test input validation %!error cmpermute () %!error cmpermute (1,2,3,4) -%!error <X must be of class uint8> cmpermute (uint16 (magic (16)), jet (256)) +%!error <invalid data type 'uint32'> cmpermute (uint32 (magic (16)), jet (256)) %!error <X must be an indexed image> cmpermute (1+i, jet (256)) %!error <X must be an indexed image> cmpermute (sparse (1), jet (256)) %!error <X must be an indexed image> cmpermute (0, jet (256))