No time to double-check, but I suspect the 1.1.6 version doesn't support ** - it's mentioned in the documentation, but I don't see any sign of it in the source code. It's on my list of things to fix for 1.1.7.
</F> 2009/3/15 Mark Wendell <mark.wend...@gmail.com>: > Hey all, > > I can't seem to use the power ("**") operator in the ImageMath module. > > > For example, multiplying an L-mode image by a factor of 2.0 works fine: > >>>> out = ImageMath.eval( "convert( ( a*val ), 'L')", a=im, val=2.0) > (no errors) > > However, raising the same image by a power of 2.0 generates a bad operand > type error: > >>>> out = ImageMath.eval( "convert( ( a**val ), 'L')", a=im, val=2.0) > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "/usr/lib/python2.5/site- > packages/PIL/ImageMath.py", line 203, in eval > out =__builtin__.eval(expression, args) > File "<string>", line 1, in <module> > File "/usr/lib/python2.5/site-packages/PIL/ImageMath.py", line 119, in > __pow__ > return self.apply("pow", self, other) > File "/usr/lib/python2.5/site-packages/PIL/ImageMath.py", line 82, in > apply > raise TypeError, "bad operand type for '%s'" % op > TypeError: bad operand type for 'pow' > > > Am I making a silly mistake? > > thanks in advance, > Mark > > Ubuntu 8.10 linux, python 2.5.2, Pil 1.1.6 > _______________________________________________ > Image-SIG maillist - image-...@python.org > http://mail.python.org/mailman/listinfo/image-sig > > _______________________________________________ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig