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Best Reason to Use Our Own Basemap

We know nothing is perfect…and in this case, even Google, Bing and Esri.  The northwest corner of Los Angeles County had a detachment to Kern County in September 2000; and when it did, the boundaries for the two counties changed, and created what some affectionately refer to as “The Notch”.  We have our dynamic layers and our basemaps and everything was going along smoothly when someone noticed that The Notch is not shown on Google, Bing or in the Esri basemaps.  Google has a feature where you can type in a city our county and it will display the boundary on top of their basemap.  If you do that for our County you get the following (it has a notch; but not the correct one).

 

GoogleMaps_LACounty_northern_notch_error

Here’s how it looks in Google Maps.

BingMaps_LACounty_northern_notch_error

This is what it looks like in Bing Maps.

 

EsriLACounty_northern_notch_error

Here’s how it looks in the Esri basemap.

The funny thing is, it is correct in OpenStreetMap.  They must have downloaded the data from the LA County Enterprise GIS Data Portal.  You can download the County boundary – click here.  Anyway, we put in map error requests at Google and Esri; and sent an e-mail to the Bing folks.  Hopefully they’ll download and update the boundary.

OpenStreetMap_LACounty_northern_notch_NOerror

Here’s how it is supposed to look; this is from OpenStreetMap.

Mark Greninger had the best line, “Best reason to use our own basemap.”

 

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