Hi,
at the moment i use a switch case for changing different charts like this:
var chart=null;
> switch (chartType) {
> case 1:
> chart=new google.visualization.LineChart(id);
>
> break;
> case 2:
> chart=new google.visualization.ColumnChart(id);
>
> break;
> }
> chart.draw(...);
i have only one chart object for all charts, if i add a error listener like
this :
google.visualization.events.addListener(chart, 'error', function (err)
{.....});
must i do this for every chart ? i mean an extra listener for the LineChart
and one for the ColumChart or can i only create one listener with the chart
object?
or is it better to use a chartWrapper ? if i use a chart wrapper i can add
only this chartwarapper to the error handler !?
and last question.. the chartWrapper loads the charts dynamicly, but if i
add this in my code "google.load("visualization", "1", {packages:["table",
"controls", "corechart","geomap","geochart"]});"
did the charWrapper then load the charts from my HDD(because the charts
already loaded) or did he trys to load the charts form the internet ?
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