quote:

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Originally posted by alyrian

Hi Olga,

I dont think you can do image analysis with Origin, only data analysis part and plotting once you have your particle size distribution.

Try ImageJ, it's made for SEM Image Analysis and a freeware

Good luck

Steven

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nr=wks.maxRows; nc=wks.nCols;  nobj=0;
worksheet -a 8; //add cols statLabel, stat, ID, xx1, yy1, xx2, yy2, dia
for(ii=1; ii<=nr; ii=ii+2) {
  nobj++;
  xx1=wcol(1)[ii];    yy1=wcol(2)[ii];
  xx2=wcol(1)[ii+1];  yy2=wcol(2)[ii+1];
  dia=Distance(xx1,yy1,xx2,yy2);
  wcol(nc+3)[nobj]=nobj;
  wcol(nc+4)[nobj]=dia;
  wcol(nc+5)[nobj]=xx1;  wcol(nc+6)[nobj]=yy1;
  wcol(nc+7)[nobj]=xx2;  wcol(nc+8)[nobj]=yy2;
};
wcol(nc+1)[L]$ = "Statistics";
wcol(nc+3)[L]$ = "ID";  wcol(nc+4)[L]$ = "Diameter";
wcol(nc+5)[L]$ = "X1";  wcol(nc+6)[L]$ = "Y1";
wcol(nc+7)[L]$ = "X2";  wcol(nc+8)[L]$ = "Y2";
sum(wcol(nc+5));  //get stats
wcol(nc+1)[1]$ = "N";    wcol(nc+2)[1] = sum.n;
wcol(nc+1)[2]$ = "Mean"; wcol(nc+2)[2] = sum.mean;
wcol(nc+1)[3]$ = "SD";   wcol(nc+2)[3] = sum.sd;
wcol(nc+1)[4]$ = "Max";  wcol(nc+2)[4] = sum.max;
wcol(nc+1)[5]$ = "Min";  wcol(nc+2)[5] = sum.min;
////////////////////////////////////////////////