Comments on: Plotting many, many points on a map.

Question: Plotting many, many points on a map.

yom3ts — Tue, 17 Feb 2009 09:08:03 -0800

What free website(s)/program(s) can I use to plot a large database of addresses on a map? Multiplottr.com allows me to load in my data and then export a .kml file, which I can import into Google Maps. But it only works for a subset of data; it cannot handle my full database of 15,000 locations.

I like multiplotter because beyond just street address and city/state/zip, I can attach a specific color pin and a label to each datapoint. Looking for something that produces a similar result (preferably in cooperation with Google Maps) and can handle a much larger data set. I'm starting out with an excel file.

By: odinsdream

odinsdream — Tue, 17 Feb 2009 09:16:50 -0800

BatchGeoCode works fairly well. You do need to break your data into chunks to use it, though. I recently used it for a customer list of about that size.

By: desjardins

desjardins — Tue, 17 Feb 2009 09:20:41 -0800

I came in here to suggest BatchGeoCode as well.

By: The Michael The

The Michael The — Tue, 17 Feb 2009 09:30:43 -0800

Maybe a bit much for your needs, but Django + GeoDjango would work.

By: Deathalicious

Deathalicious — Tue, 17 Feb 2009 11:07:59 -0800

You can set up google maps to use a datasource for the positions on a map, which can be a Google Docs spreadsheet. So if you can export your data into a format that matches the format of the datasheet, you can save it as an Excel or CSV file, open it in Google Docs, and then process that with Google Maps. Not sure if that would be easier or harder than BatchGeoCode (never used it).

Of course, I'm not sure what the data size limit is for this...it's possible this is the same limitation you experienced with Multiplottr.

By: dreamyshade

dreamyshade — Wed, 18 Feb 2009 00:41:05 -0800

Might be interested in the Million Marker Map by Maciej Ceglowski and Jason Williams.