2D Array of TreeMaps wont access the intValue()

Processing Beginners
1

Hi all,
I’m programmatically categorising colours in an image. I’m storing the colours and their values(frequency that they turn up) in a TreeMap. I’m using a single TreeMap for each colour range (ROYGBIV).
What i’m specifically trying to do is trying to access the .intValue() using that method, of a key in my 2D array of TreeMaps.
I have an ArrayList with 7 TreeMaps in it (I know, inefficient) and when I use

myTreeMap.get(arrayIndex).get(key).intValue();

it throws an error telling me that the intValue() method doesn’t exist. The irritating thing is that when I use a single TreeMap without the extra .get() it works just fine.

Is there a different way I should be accessing this method in this case?
Help gratefully recieved.

Thanks.

import java.util.Map;
import java.util.TreeMap;
ArrayList<TreeMap> colourRanges = new ArrayList<TreeMap>();
color tempC;

void setup() {
  colorMode(HSB, 360, 100, 100);
  for (int j = 0; j < 7; j++) colourRanges.add(new TreeMap());
  for (int i = 0; i < 50; i++) populate2DArray();
  for (int i = 0; i < colourRanges.size(); i++) printArray(colourRanges.get(i) + " | " + colourRanges.get(i).size());
}

void populate2DArray() { 
  tempC = color(random(360), random(100), random(100));

  int fam = colorRangeCheck(tempC); //checks the colour range

  if (colourRanges.get(fam).containsKey(tempC)) { //checks if the colour is already in the range
    int value = (colourRanges.get(fam).get(tempC)).intValue(); //gets the current number of entries for this colour
    colourRanges.get(fam).put(tempC, new Integer(value + 1)); //iterates the value by one, re adds
  } else //
  colourRanges.get(fam).put(tempC, 1);
}

int colorRangeCheck(int c) { 
  int range = -1;
  float h = hue(c);

  if (h >= 350 && h <= 360 || 
    h >= 0 && h <= 14)          range = 0; //r
  else if (h > 14 && h <= 45)   range = 1; //o
  else if (h > 45 && h <= 65)   range = 2; //y
  else if (h > 65 && h <= 155)  range = 3; //g
  else if (h > 155 && h <= 260) range = 4; //b
  else if (h > 260 && h <= 290) range = 5; //i
  else if (h > 290 && h <= 350) range = 6; //v

  return range;
}

edit: typos

1 Like
2

If you know how many you’re gonna need, you can simplify things a lot by choosing a vanilla array.

You didn’t specify the generic datatypes for your TreeMap:

Which seems like it is the pair color & int. So, their corresponding wrapper type is Integer:
final TreeMap<Integer, Integer>[] colourRanges = new TreeMap[7];

1 Like
3

Thanks so much GoToLoop. A huge help as always.