Difference between revisions of "Step function II"

From JSXGraph Wiki
Jump to navigationJump to search
Line 8: Line 8:
  
 
// Dynamic example
 
// Dynamic example
var p = board.create('point', [0, 1]);
+
var p = board.create('point', [-1, 3], {name:'drag me'});
var curve2 = board.create('stepfunction', [[0,1,2,3,4,5], [1,3,0,2,2,1]]);
+
var curve2 = board.create('stepfunction', [[0,1,2,3,4,5], [1,3,0,2,2,1]], {strokeColor:'red'});
 
board.on('update', function() {
 
board.on('update', function() {
 
   var i, len = curve2.xterm.length;
 
   var i, len = curve2.xterm.length;
Line 22: Line 22:
 
var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,8,8,-5], axis:true});
 
var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,8,8,-5], axis:true});
  
 +
// Static example
 +
var curve = board.create('stepfunction', [[0,1,2,3,4,5], [1,3,0,2,2,1]]);
 +
 +
// Dynamic example
 +
var p = board.create('point', [-1, 3], {name:'drag me'});
 +
var curve2 = board.create('stepfunction', [[0,1,2,3,4,5], [1,3,0,2,2,1]], {strokeColor:'red'});
 +
board.on('update', function() {
 +
  var i, len = curve2.xterm.length;
 +
  for (i=0; i<len; i++) {
 +
    curve2.yterm[i] = Math.random()*p.Y();
 +
  }
 +
});
 
</source>
 
</source>
  
 
[[Category:Examples]]
 
[[Category:Examples]]
 
[[Category:Calculus]]
 
[[Category:Calculus]]

Revision as of 09:11, 10 April 2014

This is an example for the element stepfunction. Here, the steps are drawn. Step functions can also be realized as function graphs, where the steps are invisible, see Step function.

The underlying JavaScript code

var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,8,8,-5], axis:true});

// Static example
var curve = board.create('stepfunction', [[0,1,2,3,4,5], [1,3,0,2,2,1]]);

// Dynamic example
var p = board.create('point', [-1, 3], {name:'drag me'});
var curve2 = board.create('stepfunction', [[0,1,2,3,4,5], [1,3,0,2,2,1]], {strokeColor:'red'});
board.on('update', function() {
  var i, len = curve2.xterm.length;
  for (i=0; i<len; i++) {
    curve2.yterm[i] = Math.random()*p.Y();
  }
});