What do you have so far? Have you seen any other threads about bar graphs?

Thanks for the reply,

I have been looking/reading up on all sorts in these forums etc.


Maybe it is just a case for me to 'have a think' (for a very long time)


Regarding: gwoptics. i am currently playing around with that:)



I have some code from them:

/**
 * RollingGraph
 * This sketch makes ise of the RollingLine2DTrace object to
 * draw a dynamically updated plot.
 */

import org.gwoptics.graphics.graph2D.Graph2D;
import org.gwoptics.graphics.graph2D.traces.ILine2DEquation;
import org.gwoptics.graphics.graph2D.traces.RollingLine2DTrace;

class eq implements ILine2DEquation{
    public double computePoint(double x,int pos) {
        return mouseX;
    }       
}

class eq2 implements ILine2DEquation{
    public double computePoint(double x,int pos) {
        return mouseY;
    }       
}

class eq3 implements ILine2DEquation{
    public double computePoint(double x,int pos) {
        if(mousePressed)
            return 400;
        else
            return 0;
    }       
}

RollingLine2DTrace r,r2,r3;
Graph2D g;
   
void setup(){
    size(600,300);
   
    r  = new RollingLine2DTrace(new eq() ,100,0.1f);
    r.setTraceColour(0, 255, 0);
   
    r2 = new RollingLine2DTrace(new eq2(),100,0.1f);
    r2.setTraceColour(255, 0, 0);
   
    r3 = new RollingLine2DTrace(new eq3(),100,0.1f);
    r3.setTraceColour(0, 0, 255);
     
    g = new Graph2D(this, 400, 200, false);
    g.setYAxisMax(600);
    g.addTrace(r);
    g.addTrace(r2);
    g.addTrace(r3);
    g.position.y = 50;
    g.position.x = 100;
    g.setYAxisTickSpacing(100);
    g.setXAxisMax(5f);
}

void draw(){
    background(200);
    g.draw();
}



Just trying to figure out how to remove those equations and add my simple values. Typing this seems too easy..

Cheers.

I think you have data[0] and data[1] instead...
And to draw a bar graph, you just have to draw two rectangles, with one dimension depending on these data entries (the other being constant). Try it!

Thank you!:)

Very straight forward.