Hi,
I have a static set of data for a chart for a range chart. The data
is changes in percentage. I would like to rebase all the data to
start at 0 when the range changes.
I have got the google.visualization.events.addListener(chart1,
'rangechange',function(event) {}) to work and I can now isolate the
correct date to make zero.
I have been going through the data and altering the values to rebase
it, BUT the chart does not update...
Any clues would be gratefully received.
Yours
Enock
var dataChanged = data.clone()
var chart1 = new
google.visualization.AnnotatedTimeLine(document.getElementById('dave_chart'));
chart1.draw(dataChanged, {displayAnnotations: false});
google.visualization.events.addListener(chart1,
'rangechange',function(event) {
r1 = chart1.getVisibleChartRange();
var value = 0.0;
var i=0;
do
{
var currCell = data.getValue(i,0);
if ( r1.start < currCell ) {
value = data.getValue(i-1,1);
i = data.getNumberOfRows();
alert('Found the date '+r1.start+' is more than
'+currCell+' value '+value+' i '+i);
}
i++;
}
while(i<data.getNumberOfRows());
for(i=0;i<dataChanged.getNumberOfRows();i++) {
dataChanaged.setValue(i,1,data.getValue(i,1)-value);
}
chart1.draw(dataChanaged, {displayAnnotations: false});
});
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