You have to change the value of the selected region's color cell in the 
DataTable and then redraw the chart.

On Thursday, March 21, 2013 5:33:57 AM UTC-4, KUTTIKRISHNAN P wrote:
>
> Hai,
>
> I have created  geoChart of US by using below code . While clicking on any 
> region I would like to change the backgroud color of the clicked region. I 
> am able to trigger the region click event . Please help to change the 
> background color of the clicked region .
>
> <html>
>   <head>
>     <script type='text/javascript' src='https://www.google.com/jsapi
> '></script>
>     <script type='text/javascript'>
>      google.load('visualization', '1', {'packages': ['geochart']});
>      google.setOnLoadCallback(drawRegionsMap);
>       function drawRegionsMap() {
>         var data = google.visualization.arrayToDataTable([['State']]);
>         var options = {
>             region: 'US',
>             displayMode: 'region',
>             colorAxis: {colors: ['orange', 'blue']},
>             datalessRegionColor:'F5F5F5',
>             enableRegionInteractivity:true,
>             resolution:'provinces'
>         };
>         var chart = new 
> google.visualization.GeoChart(document.getElementById('chart_div'));
>         chart.draw(data, options);
>         google.visualization.events.addListener(chart, 'regionClick', 
> function(res){
>             //var country_data = chart.getSelection(); 
>             //chart.setSelection();
>                 }); 
>     };
>     </script>
>   </head>
>   <body>
>     <div id="chart_div" style="width: 900px; height: 500px;"></div>
>   </body>
> </html>
>
>
>
>
>
> Thanks in Advance
>
>
>
> Regards,
> Kutti
>

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