I'm loading a CSV-file containing some x & y coordinates, which looks like this:

Code:

X Coordinate,Y Coordinate
992890,157287
1004879,167415
1024193,225136
1035310,241442
990688,160138
1034264,244077
1043763,212028
1000513,171618 

Ofcourse, I'd like to split the values and store them in an array. I do so by doing this:

Code:

void setup() {
	size(800,800);
	drawVisualization("data.csv");
};

void drawVisualization(String path) {
	String[] raw = loadStrings(path);
	
	// loop through the dataset
	// skip the first descriptive line
	for(int line = 1; line < raw.length; line++) { 
	String[] trees = split(raw[line], ","); //split the raw data and store in the array
	println(trees[line]); //print the array
	};
} 

however, if I look in my output all I see is

Code:

157287
  

Which means that the Split() function seems to break after the first line. The CSV-file does not seem to contain any bogus characters at the end of each line. The CSV has a length of 2250 lines, but shortening it to 200 lines does not make any difference..

Any idea what's causing this behavior?

1: You're creating a new trees[] every single line, and it ceases to exist at the end of every loop through the for(...)

2: split("123,456",",") gives ["123,"456"], i.e. a 2 element array, so you'll never have an item 3 or 4 or 5 etc in it when lines increases.

3: arrays start from 0, not 1.

What you want to do is something like:

Code:

String[][] trees=new String[lines][]; // 2 entries per line.
for(int line=0; line<raw.length; line++)
{
  trees[line]=split(raw[line],",");
}

for(int i=0;i<trees.length;i++)
{
  println("["+i+"] a:"+trees[i][0]+", b:"+trees[i][1]);
}