for loop dismension mismatch

i am trying to create a variable w < 24x1 double > so I can plot it against daily hours.

idx = find(lat< 34 & lat > 33 & lon < -117 & lon > -119);

w=zeros(24,1000);

for i = 1:24
    tmp=w10(i,:,:);
    w(i,:)=tmp(idx);
end

w(w==0)=NaN;
wmean=nanmean(w,2)

but matlab gives me an error message saying dimension mismatch and I can't understand why. I also tried to create a matrix w=zeros(24,207).

my w10 is < 24x207x129 double>

I am trying to pull out wind data at specific coordination (defined by idx). Is there any other way to plot hr < 24x1 > against w < 24x1 > at the specific coordinates I gave?

Answer 1

[Matt J]

Something like this, perhaps

    w=zeros(24,length(idx));

    for i = 1:24
        tmp=w10(i,:,:);
        w(i,:)=tmp(idx);
    end

[Rhyn]

thanks a lot. it works perfectly!