Re: image is not graphics

*To*: mathgroup at smc.vnet.net*Subject*: [mg110878] Re: image is not graphics*From*: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>*Date*: Sat, 10 Jul 2010 03:59:04 -0400 (EDT)

Hi, <sarcasm> usually I never work with this strange image stuff, so it's no wonder that I never came across this error message.</sarcasm> I personally like to have a difference between an image, which is basically a matrix of values and a graphics, which is in Mathematicas case often a set of lines, points, surfaces, etc in a coordinate system. For an image it is not clear from the start in what coordinate system the matrix lies. That's why the former Graphics[Raster[]] contained a parameter to tell the underlying bounding box. > I'll be grateful to anybody who will help me here, > but really this kind problem is happening more and more often - I > believe that some rethinking of the graphics would be appreciated... Maybe you should consider that there are people who have a different understanding of the underlying paradigm and that it's sometimes better just to ask and not to question the whole idea: img = Import[ "http://felfire.files.wordpress.com/2009/05/sarcasm.jpg";]; gr = DensityPlot[Sin[x]*Sin[y], {x, -Pi, Pi}, {y, -Pi, Pi}, ImageMargins -> None, PlotRangePadding -> None, Frame -> False]; ImageResize[ImageCompose[img, {gr, 0.8}], 150] Hope this helps, Cheers Patrick