Re: Check if region map is avaible in GeoChart

[asgallant]

I don't know if there is any way to determine what regions are available.  You can set up an "error" event handler, and use it to back out to the previous region:

var previousRegion, previousResolution;
google.visualization.events.addListener(geochart, 'regionClick', function(eventData) {
    previousRegion = options.region;
    previousResolution = options.resolution;
    options['region'] = eventData.region;
    options['resolution'] = 'provinces'; 
    geochart.draw(data, options);
}
google.visualization.events.addListener(geochart, 'error', function () {
    // back out one region
    options.region = previousRegion;
    options.resolution = previousResolution; 
    geochart.draw(data, options);
}

On Monday, August 27, 2012 11:08:50 PM UTC-4, Rômulo Vitoi wrote:

I have a map set to region = world, and this event to zoom in:

google.visualization.events.addListener(geochart, 'regionClick', function(eventData) {

    options['region'] = eventData.region;

    options['resolution'] = 'provinces'; 

    geochart.draw(data, options);

}

When I click on US then US-TX it works, but when I click on BR then BR-RJ it gives me this error: Requested map does not exist. 

Is there a way to check if the region map is avaible so I can avoid this error?

[Rômulo Vitoi]

That solves my problem, thanks!