code: public int get32( int x , int y ) {
  		int i = startIndex + y*stride+x*4;
  		return ((data[i]&0xFF) << 24) | ((data[i+1]&0xFF) << 16) | ((data[i+2]&0xFF) << 8) | (data[i+3]&0xFF);
  	}
docs: Returns an integer formed from 4 bands. a[i]<<24 | a[i+1] << 16 | a[i+2]<<8 | a[3]
  
  @param x column
  @param y row
  @return 32 bit integer