I never get any answer at the matlabcentral/answers so i try here!
I am modifying all values in a column and the below code works:
for i=1:size(A) density=A(i,pressPos)*100/(287.05*(A(i,tempPos))); A(i,windPos)=A(i,windPos)*power(density/densityNormal,1/3);end
But this is very slow as i have 200 000 rows in the matrix. Any way to do it column-wise instead of once per row? I try this but then i get memory problem and 'error using \' (see errors under the code)
density=A(:,pressPos)*100/287.05;density=density/A(:,tempPos);A(:,windPos)=A(:,windPos)*power(density/densityNormal,1/3);
MATLAB ERRORS GENERATED:
Error using \
Out of memory. Type HELP MEMORY for your options.
Error in scaleWind (line 31)
density=density/A(:,tempPos);
Error in getLongData (line 19)
A = scaleWind(A,avgWind);