inverting y axis in DensityPlot

*To*: mathgroup at smc.vnet.net*Subject*: [mg27271] inverting y axis in DensityPlot*From*: Matthias Hertel <wir95cgu at studserv.uni-leipzig.de>*Date*: Fri, 16 Feb 2001 03:58:21 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Hello, I would like to display the design matrix of a medium-sized general least-squares problem as a bitmap. (It's too large for StandardForm or MatrixForm to be useful, yet its structure is simple enough that one can tell if something has gone really wrong just by looking at a DensityPlot.) ListDensityPlot[desmtx, Mesh->False] almost does what I want, but the matrix is displayed upside down (desmtx[[1,1]] is in the *bottom* left corner). ListDensityPlot[Reverse@desmtx, Mesh->False] is closer, but now the frame tick marks are wrong (don't correspond to the row index). It would be perfect if there was something like ListDensityPlot[desmtx, InvertY->True, Mesh->False] that's just like a normal ListDensityPlot but with the y axis flipped. But there isn't. So, how can I get a DensityPlot with (0, 0) in the top left corner and y increasing downwards? Thanks Matthias