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Alan
Posts:
151
Registered:
7/24/09


Re: carpet plot
Posted:
Mar 9, 2011 3:29 PM


"Sebastian " <sebastian.meng@mengmuenchen.de> wrote in message <il8jae$5u9$1@fred.mathworks.com>... > Hey guys, > > I have been trying to make a so called carpet plot. Apparently no one knows what it is so have a look at the following link... > > http://www.ascgenoa.com/main/newsletter/16/figure_4.jpg > > also here is the program I made so far... hope that helps to understand the issue I have. > > a=0.3:0.15:0.3; > b=0.3:0.15:0.3; > for ia=1:length(a) > for ib=1:length(b) > vf1(ia,ib) = sqrt(3/((5/3).*a(ia)+b(ib)+2.*sqrt((a(ia)/3).*((4/3).*a(ia)b(ib))))); > vf2(ia,ib) = sqrt(3/((5/3).*a(ia)+b(ib)2.*sqrt((a(ia)/3).*((4/3).*a(ia)b(ib))))); > end > end > format('longEng') > vf1 > vf2 > > [X,Y]=meshgrid(0.3:0.15:0.3); > > so basically i get a matrix called vf1 and vf2. I then need to plot a so called carpet plot for both vf1 and vf2 on separate diagrams. a should be on the y axis and b on the x axis. now vf1 is then plotted for each combination of a and b. There suppose to be 5 vertical lines represented by the variation of b and 5 horizontal lines represented by the variation of a. I hope the link above helps. > > I think a good start is using meshgrid for the axis... > > Thanks in advance > > Seb
You can plot your data like this: plot(vf1,vf2,'g',vf1',vf2','b')
But there is some problem with your domain or your transformation  some of your vf values are complex, or significantly larger than the others
Also, you can avoid those for loops: [a b] = meshgrid(.3:.15:.3); vf1 = sqrt(3./((5/3).*a+b+2.*sqrt((a/3).*((4/3).*ab)))); vf2 = sqrt(3./((5/3).*a+b2.*sqrt((a/3).*((4/3).*ab))));



