remap array to 2d array

Answers

• kfrajer

  February 2017

  Let's make a matrix of 3x6 instead of 5x5 in order to be able to identify the dimensions directly, so 3 rows and 6 columns.

  You have an input number named val. We know that val is constrained between 0 and 3*6-1. Then to get the column you do col=val%6 and similarly for rows, row=int(val/6).

  int val=18;
  int ncol=6;
  
  for(int i=0;i<18;i++) 
    println("row "+int(i/ncol)+"\tCol "+i%ncol);
  

  Kf
• Chrisir

  February 2017

  int val=18;
  int ncol=5;
  
  
  void setup() {
    for (int i=0; i<25; i++) { 
  
      PVectorInt result1=getGridPosition(i, ncol); 
  
      println(i+":\t    row "+result1.x
        +"\tCol "+result1.y);
    }
  }
  
  PVectorInt getGridPosition( int i, int ncol ) {
    PVectorInt result = new PVectorInt(); 
    result.x=int(i/ncol); 
    result.y=i%ncol;
    return result;
  }
  
  // ======================================
  
  class PVectorInt {
    int x, y;
  }