dpb
Posts:
9,218
Registered:
6/7/07


Re: Plotting a line with variables from a matrix
Posted:
Feb 18, 2013 1:50 PM


On 2/18/2013 9:44 AM, dpb wrote: ...
> 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 ...
> 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.
OBTW, one way to handle it if sizes are very large other than by keeping all inverses simultaneously would be to add points to each plot/line sequentially somewhat like if were doing an animation.
There are examples in enhanced graphics on animation that illustrate the idea but basically you plot the first x,y points individually to start the lines then augment the data vector w/ each additional set as you compute the new inverse.


