
Re: A nonconventional ListContourPlot
Posted:
Feb 25, 2013 2:19 AM


Hi there I just realized that ListContourPlot can also take as argument a list of the kind {{x1, y1, f1}, {x2, y2,f2}, ....}, therefore the answer to my question is obvious: ListContourPlot[data]
to David Park: the plot may seem strange to mathematicians but not in microwave engineering, where we often need a dispersion diagram of the reflectivity as a function of frequency and wave number. As is often the case, the wave number depends upon frequency, that's why in my example I choose the x and y axes be given by two functions of i and j. Anyway, thank you for taking your time to answer my question. Cheers. LM
On Sun, Feb 24, 2013 at 2:22 PM, djmpark <djmpark@comcast.net> wrote: > ContourPlot[Sin[x + y^2], {x, 2, 2}, {y, 1, 1}, > ColorFunction > ColorData["DarkRainbow"]] > > ?? > > Rather, why do you want to sample at your strange set of x,y values? Is the > z expression just a standin for actual measure values? You might try > Interpolation with InterpolatingOrder > 1, but the results in this case do > not seem promising. > > > David Park > djmpark@comcast.net > http://home.comcast.net/~djmpark/index.html > > > > > From: Luiz Melo [mailto:lmelo@ufsj.edu.br] > > > Good day, > > x[a_,b_] = a*b; > y[a_,b_] = Cos[a^2 + b]; > z[a_,b_] = Sin[a + b^2]; > > data = Table[{x[i,j], y[i,j], z[i,j]}, {j, 1, 1, 0.1}, {i, 2, 2, 0.1}]; > > For the table above, is it possible to see a ListContourPlot of the z > component as a function of x and y (the values of x and y on the horizontal > and vertical axes, respectively)? > > Thank you in advance > Luiz Melo >

