giCentre lineChart: ArrayIndexOutOfBoundException: -1

edited March 25 in Library Questions

Hi, I'm trying to read some values from a csv file using loadString, then parse them to float and display a chart using the giCentre library. However I get the ArrayIndexOutOfBoundException error on the lineChart.draw(..); line and not sure where it comes from. Thanks

Here's my code

import org.gicentre.utils.stat.*; 

XYChart lineChart;

String fileName = "32140";

//my 2 arrays used for x and y axis
float[] ms = new float[200];
float[] delta = new float[200];

void setup()
{
  size(1500,1000);
  String[] lines = loadStrings(fileName + "_clean.csv");  

  for(int i = 0; i < lines.length; i++){
    float[] fullList = parseFloat(split(lines[i], ','));
    ms[i] = fullList[1]; //only need values in column 1
    delta[i] = fullList[3]; //only need values in column 3
  }


  textFont(createFont("Arial",10),10);

  // Both x and y data set here.  
  lineChart = new XYChart(this);
  lineChart.setData(ms, delta);
  // Axis formatting and labels.
  lineChart.showXAxis(true); 
  lineChart.showYAxis(true); 
  lineChart.setMinY(0);

  lineChart.setYFormat("#####");
  lineChart.setXFormat("0000");

  // Symbol colours
  lineChart.setPointColour(color(180,50,50,100));
  lineChart.setPointSize(5);
  lineChart.setLineWidth(2);
}

// Draws the chart and a title.
void draw()
{
  background(255);
  textSize(9);
  lineChart.draw(15,15,width-30,height-30); //error here

  // Draw a title over the top of the chart.
  fill(120);
  textSize(20);
  text("Income per person, United Kingdom", 70,30);
  textSize(11);
  text("Gross domestic product measured in inflation-corrected $US", 
        70,45);
}
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