dpb
Posts:
8,982
Registered:
6/7/07


Re: Plotting a line with variables from a matrix
Posted:
Feb 18, 2013 10:44 AM


On 2/17/2013 5:16 PM, Vilius wrote: > three example matrixes: > V1=1 > A=[10*1 20*1 ; 30*1 40*1] > a=inv(A)=[ 0.2000 0.1000; 0.1500 0.0500] > > > V2=2 > A=[10*2 20*2 ; 30*2 40*2] > a=inv(A)= [ 0.1000 0.0500 ; 0.0750 0.0250] > > V3=3 > A=[10*3 20*3 ; 30*3 40*3] > a=inv(A)= [ 0.0667 0.0333; 0.0500 0.0167] > > and so on with other Vs > > so on the graph (V;a11) : first point (1; 0.20) second point (2; 0.1) > third point (3;0.0667) and so on > > sorry for bad explanation and bad english, my question might be misleading > again, thanks guys for your effort, thanks for answering. > If I can figure it out how to do this i can write a proper report, > otherwise it takes too much time to calculate everything seperately.
OK, for a straightahead solution try the following...
V=[1:5]; A=reshape([10:10:40],2,2)'; a=zeros(size(A,1),size(A,2),length(V)); for i=1:length(V) a(:,:,i)=inv(V(i).*A); end for i=1:size(a,2) for j=1:size(a,1) plot([1:5],squeeze(a(i,j,:))) pause(1) end end
That will leave you w/ a result 3D array from which it selects the planes to plot one at a time...if your array sizes are really, really, really large you may have memory problems in which case you may need to write to file and postprocess them  but then you may well have numeric problems anyways w/ inverse.


