- }
-
- //populate null matrix from probability matrix, do this a lot.
- for(int i=0;i<runs;i++){
- nullmatrix.clear();
- //zero-fill the null matrix
- nullmatrix.assign(nrows, vector<int>(ncols, 0));
-
- if(matrix == "sim1" || matrix == "sim6" || matrix == "sim8" || matrix == "sim7") {
- count = 0;
- while(count < n) {
- nextnum:
- previous = 0.0;
- randnum = rand() / double(RAND_MAX);
- for(int i=0;i<nrows;i++) {
- for(int j=0;j<ncols;j++) {
- current = probabilityMatrix[ncols * i + j];
- if(randnum <= current && randnum > previous) {
- nullmatrix[i][j] = 1;
- count++;
- if (count > n) break;
- else
- goto nextnum;
- }
- previous = current;
- }
- }
- }
- }
-
- else if(matrix == "sim2" || matrix == "sim4") {
- for(int i=0;i<nrows;i++) {
- previous = 0.0;
- count = 0;
- while(count < rowtotal[i]) {
- randnum = rand() / double(RAND_MAX);
- for(int j=0;j<ncols;j++) {
- current = probabilityMatrix[ncols * i + j];
- if(randnum <= current && randnum > previous && nullmatrix[i][j] != 1) {
- nullmatrix[i][j] = 1;
- count++;
- previous = 0.0;
- break;
- }
- previous = current;
- }
- }
- }
- }
-