# Difference between revisions of "Bounding box"

From JSXGraph Wiki

A WASSERMANN (talk | contribs) |
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The JavaScript code | The JavaScript code | ||

<source lang="javascript"> | <source lang="javascript"> | ||

− | var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,10,5,-2], axis:true}); | + | var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,10,5,-2], keepaspectratio: true, axis:true}); |

</source> | </source> | ||

sets the vertical and horizontal units and the position of the origin such that | sets the vertical and horizontal units and the position of the origin such that | ||

Line 15: | Line 15: | ||

<div id="jxgbox" class="jxgbox" style="width:500px; height:500px;"></div> | <div id="jxgbox" class="jxgbox" style="width:500px; height:500px;"></div> | ||

<script type="text/javascript"> | <script type="text/javascript"> | ||

− | var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,10,5,-2], axis:true}); | + | var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,10,5,-2], keepaspectratio: true, axis:true}); |

</script> | </script> | ||

</html> | </html> |

## Revision as of 11:06, 18 February 2010

Instead of supplying values for originX, originY, unitX, unitY, we can alternatively provide a bounding box to specify the dimensions for the drawing panel defined by

```
<div id="jxgbox" class="jxgbox" style="width:500px; height:500px;"></div>
```

The JavaScript code

```
var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,10,5,-2], keepaspectratio: true, axis:true});
```

sets the vertical and horizontal units and the position of the origin such that the upper left corner of the drawing panel has position (-5,10) and the lower right corner of the drawing panel has position (5,-2).

The source code of the page looks like this:```
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<div id="jxgbox" class="jxgbox" style="width:500px; height:500px;"></div>
<script type="text/javascript">
var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,10,5,-2], axis:true});
</script>
```