Difference between revisions of "Google style chart"

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Line 7: Line 7:
 
   var p;
 
   var p;
 
   var points = [];
 
   var points = [];
  points.push(brd.createElement('point', [0,0], {visible:false, name:'', fixed:true}));
 
 
   var x = [];
 
   var x = [];
 
   var y = [];
 
   var y = [];
   for (i=0;i<=20;i++) {
+
  var start = 0;
 +
  var end = 20;
 +
  points.push(brd.createElement('point', [start,0], {visible:false, name:'', fixed:true}));
 +
   for (i=start;i<=end;i++) {
  
 
     // Generate random coordinates
 
     // Generate random coordinates
Line 26: Line 28:
 
     y.push(y1);
 
     y.push(y1);
 
   }
 
   }
   // Filled area:
+
   // Filled area. We need two additional points [start,0] and [end,0]
   points.push(brd.createElement('point', [x1,0], {visible:false, name:'', fixed:true}));  
+
   points.push(brd.createElement('point', [end,0], {visible:false, name:'', fixed:true}));  
 
   brd.createElement('polygon',points, {withLines:false,fillColor:'#e6f2fa'});
 
   brd.createElement('polygon',points, {withLines:false,fillColor:'#e6f2fa'});
 
    
 
    
Line 50: Line 52:
 
   var i, x1, y1;
 
   var i, x1, y1;
 
   var p;
 
   var p;
   var x = [0];
+
  var points = [];
   var y = [0];
+
   var x = [];
   for (i=0;i<=20;i++) {
+
   var y = [];
 +
  var start = 0;
 +
  var end = 20;
 +
  points.push(brd.createElement('point', [start,0], {visible:false, name:'', fixed:true}));  
 +
   for (i=start;i<=end;i++) {
  
 
     // Generate random coordinates
 
     // Generate random coordinates
Line 64: Line 70:
 
                     highlightFillColor:'#0077cc', style:6, name:'', fixed:true}
 
                     highlightFillColor:'#0077cc', style:6, name:'', fixed:true}
 
                 );  
 
                 );  
 +
    points.push(p);
 
     x.push(x1);
 
     x.push(x1);
 
     y.push(y1);
 
     y.push(y1);
 
   }
 
   }
   x.push(x1);
+
   // Filled area. We need two additional points [start,0] and [end,0]
   y.push(0);
+
  points.push(brd.createElement('point', [end,0], {visible:false, name:'', fixed:true}));  
 +
   brd.createElement('polygon',points, {withLines:false,fillColor:'#e6f2fa'});
 +
 
 +
  // Curve:
 
   brd.createElement('curve', [x,y],  
 
   brd.createElement('curve', [x,y],  
 
                 {strokeWidth:3, strokeColor:'#0077cc',  
 
                 {strokeWidth:3, strokeColor:'#0077cc',  
                   highlightStrokeColor:'#0077cc',fillColor:'#e6f2fa'}
+
                   highlightStrokeColor:'#0077cc'}
 
               );  
 
               );  
 
}
 
}

Revision as of 17:56, 10 May 2009

JavaScript code to produce this chart

<jsxgraph width="600" height="400">
 var graph1;
 var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 20, originY: 300, axis: true, unitX: 28, unitY: 50});

function doIt() {
   var i, x1, y1;
   var p;
   var points = [];
   var x = [];
   var y = [];
   var start = 0;
   var end = 20;
   points.push(brd.createElement('point', [start,0], {visible:false, name:'', fixed:true})); 
   for (i=start;i<=end;i++) {

     // Generate random coordinates
     x1 = i;
     y1 = Math.random()*4+1;

     // Plot it
     p = brd.createElement('point', [x1,y1], 
                   {strokeWidth:2, strokeColor:'#ffffff', 
                    highlightStrokeColor:'#0077cc', fillColor:'#0077cc',  
                    highlightFillColor:'#0077cc', style:6, name:'', fixed:true}
                 ); 
     points.push(p);
     x.push(x1);
     y.push(y1);
   }
   // Filled area. We need two additional points [start,0] and [end,0]
   points.push(brd.createElement('point', [end,0], {visible:false, name:'', fixed:true})); 
   brd.createElement('polygon',points, {withLines:false,fillColor:'#e6f2fa'});
   
   // Curve:
   brd.createElement('curve', [x,y], 
                 {strokeWidth:3, strokeColor:'#0077cc', 
                  highlightStrokeColor:'#0077cc'}
               ); 
}
brd.suspendUpdate();
doIt();
brd.unsuspendUpdate();
</jsxgraph>