Re: MatrixPlot
- To: mathgroup at smc.vnet.net
- Subject: [mg116076] Re: MatrixPlot
- From: Sofia Figueiredo <sofiafig at gmail.com>
- Date: Tue, 1 Feb 2011 06:52:42 -0500 (EST)
None of the options worked... My command is: MatrixPlot[a, ColorFunction -> (GrayLevel[(# - Min[a])/(Max[a] - Min[a])] &), ColorFunctionScaling -> False, PlotRange -> All] And generates a matrix of whites. The matrix ranges between -7866.78 and 145, so some color should be visible. Am I doing something wrong in this command? Thanks in advance! Sofia On Sat, Jan 29, 2011 at 7:01 AM, DrMajorBob <btreat1 at austin.rr.com> wrote: > There is PlotRange -> All, and we recently discovered PlotRange -> Full. > > Maybe one of those will work. > > Bobby > > On Fri, 28 Jan 2011 05:16:40 -0600, Sofia Figueiredo <sofiafig at gmail.com> > wrote: > >> Dear Math group, >> I have a 14x8 matrix "A" and I want to present it as a color map. I am >> trying to use the command MatrixPlot, but I do not manage to set the >> upper and lower limit. I tried to define the >> PlotRange->{Min[A],Max[A]}, but it did not work. >> How can I set the upper limite of the color range to the maximal value >> of my matrix and the lower limite of the color range to the minimal >> value of my matrix? >> I also find strange that, in the MatrixPlot I get, the system can >> diferentiate between the values 0.7 and 0.2, but then attributes the >> same color to values as disparate as 1 and 145. How can I avoid this? >> >> Thanks in advance. >> Sofia >> > > > -- > DrMajorBob at yahoo.com >