Difference between revisions of "Highlight curve via slider"

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<jsxgraph height="500" width="600" board="board"  box="jxgbox">
+
Depending on the value of the slider ''s'', one of the curves is highlighted.
board = JXG.JSXGraph.initBoard('jxgbox', {originX: 250, originY: 250, unitX: 25, unitY: 25});
+
<jsxgraph height="500" width="500" board="board"  box="jxgbox">
var s = board.createElement('slider', [[1,8],[5,8],[0,0,1]]);
+
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-10, 10, 10, -10]});
 +
var s = board.create('slider', [[1,8],[5,8],[0,0,1]]);
  
var g = board.createElement('functiongraph', [function(x){ return x*x;}]
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var g = board.create('functiongraph', [function(x){ return x*x;}],
 
                     {
 
                     {
                         strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';}
+
                         strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
 +
                        strokeWidth:function(){ return (s.Value()<0.5)?4:1;}
 
                     });
 
                     });
var f = board.createElement('functiongraph', [function(x){ return x+1;}]
+
var f = board.create('functiongraph', [function(x){ return x+1;}],
 
                     {
 
                     {
                         strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';}
+
                         strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
 +
                        strokeWidth:function(){ return (s.Value()>=0.5)?4:1;}
 
                     });
 
                     });
 
</jsxgraph>
 
</jsxgraph>
 +
 +
===The underlying JavaScript code===
 +
<source lang="javascript">
 +
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-10, 10, 10, -10]});
 +
var s = board.create('slider', [[1,8],[5,8],[0,0,1]]);
 +
 +
var g = board.create('functiongraph', [function(x){ return x*x;}],
 +
        {
 +
          strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
 +
          strokeWidth:function(){ return (s.Value()<0.5)?4:1;}
 +
        });
 +
var f = board.create('functiongraph', [function(x){ return x+1;}],
 +
        {
 +
          strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
 +
          strokeWidth:function(){ return (s.Value()>=0.5)?4:1;}
 +
        });
 +
</source>
 +
 +
[[Category:Examples]]

Latest revision as of 09:15, 8 June 2011

Depending on the value of the slider s, one of the curves is highlighted.

The underlying JavaScript code

board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-10, 10, 10, -10]});
var s = board.create('slider', [[1,8],[5,8],[0,0,1]]);

var g = board.create('functiongraph', [function(x){ return x*x;}],
         {
          strokeColor:function(){ return (s.Value()<0.5)?'red':'blue';},
          strokeWidth:function(){ return (s.Value()<0.5)?4:1;}
         });
var f = board.create('functiongraph', [function(x){ return x+1;}],
         {
          strokeColor:function(){ return (s.Value()>=0.5)?'red':'blue';},
          strokeWidth:function(){ return (s.Value()>=0.5)?4:1;}
         });