MATLAB: Reorganizing a large matrix into 4 other matrixes

dlmreadMATLABmatrix

I am trying to write a code that will produce a contour plot of many PIV Data points from DaVis .txt files.
The .txt file has 4 columns of data (X coordinates, Y coordinates, U velocity, V velocity). As of now I have the code reading this file with dlmread skipping the first row. I need the program to reorganize the X column into its own matrix of 173×124, and the other columns to do the same for their own matrixes of the same size. I have the X,Y,U,V matrixes set to empty matrixes that need to be filled.
type B00001.txt;
A=dlmread('B00001.txt', '',1,0);
X=zeros(173,124);
Y=zeros(173,124);
U=zeros(173,124);
V=zeros(173,124);
pcolor(X,Y,U); 
hold on
shading interp
colormap(jet);
colorbar

Best Answer

Hi Ryan,
Thanks for attaching the code.
The data is present in a matrix form with four columns covering X, Y, U, and V. You can just use the code that is placed in the comments and it will work.
Placing here again:
type B00001.txt;
A=dlmread('B00001.txt', '',1,0);
X = reshape(A(:,1),173,124);
Y = reshape(A(:,2),173,124);
U = reshape(A(:,3),173,124);
V = reshape(A(:,4),173,124);
pcolor(X,Y,U); 
hold on
shading interp
colormap(jet);
colorbar
Hope this helps.
Regards,
Sriram
Related Question