Time series: Difference between revisions

From JSXGraph Wiki
(New page: <html> <form> <textarea id="inputData"> 2009-01-04 : 126,5 2009-01-19 : 125,2 2009-01-20 : 125,0 2009-02-28 : 121,5 </textarea> </form> </html> <jsxgraph width="700" height="400"> brd...)
 
No edit summary
Line 11: Line 11:


<jsxgraph width="700" height="400">
<jsxgraph width="700" height="400">
     brd = JXG.JSXGraph.initBoard('jxgbox', {axis:true, originX: 60, originY: 300, unitX: 25, unitY: 2});
     brd = JXG.JSXGraph.initBoard('jxgbox', {axis:true, originX: 60, originY: 300, unitX: 10, unitY: 2});


 
     var inputString = document.getElementById('inputData').value;       // Read the data as string
     var inputString = document.getElementById('inputData').value;           // Read the data as string
     inputString = inputString.replace(/^\s+/, '').replace(/\s+$/, '');  // Remove leading and trailing whitespace
     inputString = inputString.replace(/^\s+/, '').replace(/\s+$/, '');  // Remove leading and trailing whitespace
     var lines=inputString.split('\n');                                  // Split into lines
     var lines=inputString.split('\n');                                  // Split into lines
Line 30: Line 29:
          
          
     }
     }
     var plot = brd.createElement('curve', [x,y]);             
     var plot = brd.createElement('curve', [x,y], {strokeColor:'red'});             
</jsxgraph>
 
 
===Time series - Google style===
<jsxgraph width="700" height="400" box="jxgbox2">
    brd2 = JXG.JSXGraph.initBoard('jxgbox2', {axis:true, originX: 60, originY: 300, unitX: 10, unitY: 2});
 
    inputString = document.getElementById('inputData').value;        // Read the data as string
    inputString = inputString.replace(/^\s+/, '').replace(/\s+$/, '');  // Remove leading and trailing whitespace
    var lines=inputString.split('\n');                                  // Split into lines
    var p, x1, y1;
    var x = [];
    var y = [];
    var points = [];
 
    points.push(brd2.createElement('point', [0,0], {visible:false, name:'', fixed:true}));
    var startDate;
    for (var i=0;i<lines.length;i++) {
        var c = lines[i].split(' : ');
        var d = c[0].split('-');
        var v = parseFloat(c[1].replace(/,+/,'.'));                      // Change 126,5 to 126.5
        var date = new Date(d[0],d[1],d[2]);                            // Split the date into Year, Month, Day
        if (i==0) { startDate = new Date(d[0],d[1],d[2]); }              // Keep the first date in memory
        x = (date.getTime()-startDate.getTime())/ ( 1000.0*60.0*60.0*24.0 );  // The x coordinate of a value is the number of days from the first entry
        y = v;
        p = brd2.createElement('point', [x,y],
                  {strokeWidth:2, strokeColor:'#ffffff',
                    highlightStrokeColor:'#0077cc', fillColor:'#0077cc', 
                    highlightFillColor:'#0077cc', style:6, name:'', fixed:true}
        points.push(p);
        x.push(x1);
        y.push(y1);
       
    }
    points.push(brd2.createElement('point', [y1,0], {visible:false, name:'', fixed:true}));
    // Filled area. We need two additional points [start,0] and [end,0]
    brd2.createElement('polygon',points, {withLines:false,fillColor:'#e6f2fa'});
 
    // Curve:
    brd2.createElement('curve', [x,y],
                {strokeWidth:3, strokeColor:'#0077cc',
                  highlightStrokeColor:'#0077cc'}
              );
</jsxgraph>
</jsxgraph>

Revision as of 14:03, 17 June 2009


Time series - Google style

Retrieved from "http://jsxgraph.org/wiki/index.php?title=Time_series&oldid=2208"