Rendering local shapefiles with HTML5

Dom, 11/12/2011 - 19:18 — jldominguez

Thanks to Tom Carden's javascript functions from his shapefile-js project and the new HTML5 local file access API, it is very easy to load and render any shapefile stored in the client's device.

You can test it here.

If you don't have a shapefile close at hand, get one of these: [China], [Europe], [South America], [United States].

Comments:

I have only tested it on Windows 7 + Google Chrome v. 15.x and Mozilla Firefox 8. I'm curious to see if it works on smartphones.
Choose a line or polygon SHP file (not a very big one).

blog de jldominguez

Wow Juan Lucas, that's

Dom, 11/12/2011 - 19:43 — jsanz

Wow Juan Lucas, that's really interesting.

It works perfectly on Firefox on my Linux box with a 2MB shp.

responder

And also quite fast with

Lun, 12/12/2011 - 09:18 — Andrés (no verificado)

And also quite fast with medium size shapes. What bother me is that Java -unlike C++/Qt with webkit renderer engine- has not good support for HTML5/Javascript (AFAIK there is not a mature widget working clossplatform). Wouldn't be nice to have a preview of your shapes in gvSIG before loading them? That would be utterly easy with good HTML5/Javascript support :)