FSInteractiveMap

A charting library to visualize data on a map. It’s like geochart but for iOS!

The idea behind this library is to load a SVG file of a map and display it simply in a view. On top of that you can know when a specific area is clicked.

Please note that the SVG loading is quite simple and doesn’t support all the features of the SVG file format. It’s just good enough to display most of the maps I found in SVG!

Screenshots

Installing FSInteractiveMap

Add the contents of the FSInteractiveMap project to your directory or simply add the following line to your Podfile:

pod "FSInteractiveMap"

How to use

FSInteractiveMap is a subclass of UIView so it can be added as regular view. It’s basically loading a map from a SVG file. I bundled a few svg maps in the example but you can add any SVG to your project and load it.

NSDictionary* data = @{	@"asia" : @12,
                        @"australia" : @2,
                        @"north_america" : @5,
                        @"south_america" : @14,
                        @"africa" : @5,
                        @"europe" : @20
                      };
    
FSInteractiveMapView* map = [[FSInteractiveMapView alloc] initWithFrame:self.view.frame];

[map loadMap:@"world-continents-low" withData:data colorAxis:@[[UIColor lightGrayColor], [UIColor darkGrayColor]]];

[map setClickHandler:^(NSString* identifier, CAShapeLayer* layer) {
    self.detailDescriptionLabel.text = [NSString stringWithFormat:@"Continent clicked: %@", identifier];
}];

An example of a “clickable” map:

FSInteractiveMapView* map = [[FSInteractiveMapView alloc] initWithFrame:CGRectMake(16, 96, self.view.frame.size.width - 32, 500)];
[map loadMap:@"usa-low" withColors:nil];

[map setClickHandler:^(NSString* identifier, CAShapeLayer* layer) {
    if(_oldClickedLayer) {
        _oldClickedLayer.zPosition = 0;
        _oldClickedLayer.shadowOpacity = 0;
    }
    
    _oldClickedLayer = layer;
    
    // We set a simple effect on the layer clicked to highlight it
    layer.zPosition = 10;
    layer.shadowOpacity = 0.5;
    layer.shadowColor = [UIColor blackColor].CGColor;
    layer.shadowRadius = 5;
    layer.shadowOffset = CGSizeMake(0, 0);
}];

How to find SVG maps

There are a few places where you can find svg files that are suitable for FSInteractiveMap. Here is a short list:

• http://www.amcharts.com/svg-maps/
• http://www.highcharts.com/maps/demo#custom/world-continents
• Wikipedia

Contact & Issues

If you have any issues please let me know in the issue part of this project.
For any other things you can reach me on twitter or by email.