Re: Using ContourPlot when between x and y variables there is a constriant

*To*: mathgroup at smc.vnet.net*Subject*: [mg69370] Re: [mg69353] Using ContourPlot when between x and y variables there is a constriant*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Sat, 9 Sep 2006 03:26:49 -0400 (EDT)*Reply-to*: hanlonr at cox.net

ContourPlot[Sin[x*y], {x, -5, 5}, {y, -5, 5}, ContourLines->False,PlotPoints->40]; ContourPlot[Sin[x*y]*Boole[x>2y], {x, -5, 5}, {y, -5, 5}, ContourLines->False,PlotPoints->40]; Bob Hanlon ---- "diego.aristizabal" <daristi at gmail.com> wrote: > Hi, > > I have a problem with the command ContourPlot. The point is that I want > to contour plot a function which is real defined only for x>2y. In > other words what I want to plot is something like this: > ContourPlot[f(x,y),{x,xmin,xmax},{y,2*x,xmax}]. The problem is that > Mathematica does not understand the lower bound on y when specified as > 2*x. I appreciate some help. > > Diego. >