Thank you very much, works perfectly! It changes the color of the point
when I hover over the point where it is below the average. I would however
like to plot a point or marker on top of that point that stays permanently,
i.e. without needing to hover mouse over that point.
On Friday, July 5, 2013 9:11:56 AM UTC-7, asgallant wrote:
>
> Ok. Here's one way to do it:
>
> var data = new google.visualization.DataTable();
> // create columns and populate data
>
> var average = /* input or calculate your average */;
> var view = new google.visualization.DataView(data);
> view.setColumns([0, 1, {
> type: 'number',
> calc: function (dt, row) {
> return (dt.getValue(row, 1) < average) ? {v: dt.getValue(row, 1),
> f: dt.getFormattedValue(row, 1)} : null;
> }
> }]);
>
> var chart = new google.visualization.LineChart(...);
> chart.draw(view, {
> /* options */
> series: {
> 0: {
> pointSize: 3 // pick some size that works for you, should be
> the same for both for best visual continuity
> }
> 1: {
> visibleInLegend: false,
> pointSize: 3, // pick some size that works for you, should be
> the same for both for best visual continuity
> lineWidth: 0
> }
> }
> });
>
> On Friday, July 5, 2013 10:56:37 AM UTC-4, Stef Marais wrote:
>>
>> I just want the point to change color for certain behavior. For instance
>> if the price drops below the average, that point must by hi-lighted or made
>> a different colour. The line should stay the same color throughout
>>
>> On Friday, July 5, 2013 7:32:00 AM UTC-7, asgallant wrote:
>>>
>>> Do you want just the points to change color or do you want the line to
>>> change color too? If you want the line to change color, what behavior do
>>> you want when the line crosses (one point is above and the other below) the
>>> average?
>>>
>>> On Friday, July 5, 2013 5:24:04 AM UTC-4, Stef Marais wrote:
>>>>
>>>> I'm new to PHP. I have managed to plot my data, the price at varying
>>>> dates, using the line chart. I would like to plot points in different
>>>> colours when the price dips below the average.
>>>>
>>>> How can I go about doing this?
>>>>
>>>
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