[Octave-bug-tracker] [bug #44794] image package: imtransform should use 0 instead of NaN for the default extrapolation value

[Carnë Draug]

Follow-up Comment #10, bug #44794 (project octave):

The test fails in Matlab (R2010b)


>> im = rand (2);
>> tmat = [eye(2); 0 0];
>> T = maketform ('affine', tmat);
>> im2 = imtransform (im, T, 'xdata', [1 3]);
??? Error using ==> imtransform>parse_inputs at 454
If either 'XData' or 'YData' is specified, then both must be specified.

Error in ==> imtransform at 264
args = parse_inputs(varargin{:});


but If I set Ydata, then:


>> im2 = imtransform (im, T, 'xdata', [1 3], 'ydata', [1 3]) 

im2 =

    0.8147    0.1270         0
    0.9058    0.9134         0
         0         0         0

>> im2 = imtransform (im, T, 'xdata', [1 3], 'ydata', [1 2])

im2 =

    0.8147    0.1270         0
    0.9058    0.9134         0



This sounds about right to me but you're more familiar with this function.

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