is it possible to give a minimum size for the marker?
On Thursday, August 9, 2012 1:31:50 AM UTC+7, asgallant wrote:
>
> Marker size is determined by the relative differences between data points
> (ie, the smallest value gets the smallest marker, while the largest value
> gets the largest marker, and everything in between scales linearly). When
> all the marker values are the same, the API assigns each point an
> average-size marker - there is no way to tell the API how big
> "average-size" should be, though.
>
> As far as color-index, you need to assign colorAxis.minValue and
> colorAxis.maxValue so the API can know where 0 falls in the scale.
>
> On Wednesday, August 8, 2012 11:05:48 AM UTC-4, daxu wrote:
>>
>> Hello everyone,
>>
>> Very new to google geo chart. From the document, it says that I can set
>> marker size and colour (in the markers Mode format section).
>>
>> However, I can't make it work.
>>
>> My script:
>> <script type="text/javascript">
>>
>> google.load('visualization', '1', { 'packages': ['geochart'] });
>> google.setOnLoadCallback(drawRegionsMap);
>>
>> function drawRegionsMap() {
>>
>> var data = new google.visualization.DataTable();
>>
>> data.addColumn('number');
>> data.addColumn('number');
>> data.addColumn('number');
>> data.addColumn('number');
>>
>> var markersize = 4;
>> var markercolour = 0;
>> data.addRows([
>> [41.8776, -87.6272, markercolour , markersize],
>> [39.97919999999999, 116.29919999999998,markercolour , markersize ],
>> [56.0, 10.0, markercolour , markersize],
>> [62.0, 15.0, markercolour ,markersize ]
>> // data truncated for posting
>> ]);
>>
>>
>> var options = {
>> displayMode: 'markers',
>> datalessRegionColor: 'd1dedf',
>> colorAxis: {colors: ['red','green']}
>> };
>>
>> var chart = new
>> google.visualization.GeoChart(document.getElementById('chart_div'));
>> chart.draw(data, options);
>> }
>> </script>
>>
>> Seems doesn't matter if I set it to 4 or 24, the markers are the same
>> size, also it ignores the colour index.
>>
>> Can someone help?
>>
>> Many Thanks
>>
>
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