How do I avoid intersect overwriting indices?

Hello,

I'm using intersect function to match some matrices containing distance and pollution data.

I created an array containing all of my distances to work as intersect base. Now I'm trying to find where, in another matrix, my distance is equal to a distance on the set array and grab the pollution information on that line to merge on a resultant column.

The problem is: when i have two coincident distances, the second one overwrite the first one index and sometimes overwrite the pollution data with NaN due to that.

My coding stands like the following:

VETORD(:,1) = (0:0.001:9890);
    [k1,i1,j1] = intersect (VETORD,DISTM1);
    [k2,i2,j2] = intersect (VETORD,DISTM2);
    [k3,i3,j3] = intersect (VETORD,DISTM3);

HAVMAT = VETORD;
    HAVMAT(:,2:4) = NaN;
    HAVMAT(i1,2) = FINAL(1).MAT(j1,14);
    HAVMAT(i2,3) = FINAL(2).MAT(j2,14);
    HAVMAT(i3,4) = FINAL(3).MAT(j3,14);

Where VETORD is the main array with all possible distances; DISTM# are the arrays with the calculated distances i'm working and FINAL(#).MAT(:,14) are the pollution data i need merged at the end. Note: I'm building this merged matrix to use pcolor interp plotting (in case it helps)

Thanks in advance for the help