Vectorize an extraction

[John W. Eaton]

On  2-Dec-2010, keithspg wrote:

| 
| I did not know how best to title this, but I am working on analysis of a data
| set. In that set, there are values I do not want to consider nor plot as
| they are zero. Currently, I am using this loop to extract the values I want
| (all voltages >0.5)
|                 j=1;
|               for i = 1:(size(data,1)-1); # extracting only loaded values loop
|               if(data(i,2) > 0.5);
|               loaded(j,1)=data(i,1);
|               loaded(j,2)=data(i,2); 
|               j=j+1;
|               endif
|               endfor
| 
| I was hoping to make this faster in execution by vectorizing this and am
| looking for advice on how best to do it.

Maybe something like this?

  idx = find (data(1:(end-1),2) > 0.5);
  loaded1 = data(idx,1:2);

jwe