Time series

From JSXGraph Wiki
Revision as of 15:09, 17 June 2009 by A WASSERMANN (talk | contribs)
Jump to navigationJump to search

Simple style

JavaScript code

    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
    inputString = inputString.replace(/^\s+/, '').replace(/\s+$/, '');   // Remove leading and trailing whitespace
    var lines=inputString.split('\n');                                   // Split into lines
    var x = [];
    var y = [];
    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[i] = (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[i] = v;
        
    }
    var plot = brd.createElement('curve', [x,y], {strokeColor:'red'});            
</jsxgraph>

Time series - Google style