edits for classification

David Mayerich
1 parent 4b37859f
Showing 1 changed file with 20 additions and 2 deletions Show diff stats
envi/envi.h
@@ -603,11 +603,29 @@ public:
 	{
 		//save pixels in X as floating numbers: float * p
 		float * p = (float*)malloc(header.bands * sizeof(float));		//save pixel information
-		unsigned bandnum = header.samples * header.lines;		//calculate pixel numbers in a band
+		unsigned pixels = header.samples * header.lines;		//calculate pixel numbers in a band
 		unsigned count = 0;		//for counting use
 		unsigned j = 0;		//memory the pointer location in X
  
-		for(unsigned i = start; i < bandnum; i++){
+		//create two indices into the mask (mask index and pixel index)
+		unsigned mi = 0;	//valid pixel index
+		unsigned pi = 0;	//actual pixel in the mask
+
+		//find the actual pixel index for the mask index "start"
+		while(mi < start){
+			if(mask[pi])
+				mi++;
+
+			pi++;
+		}
+		//at this point, pi is an index to the mi'th valid pixel
+
+		//load the next N valid pixels
+		//for(unsigned i = 0; i < N; i++){
+
+		//}
+
+		for(unsigned i = pi; i < pixels; i++){
 			if(mask[i] != 0){
 				pixel(p, i);
 				//copy p to X