Comments on: Importing Shapefiles http://googlemapsbook.com/2006/08/30/shapefiles/ with PHP or Rails and AJAX: From Novice to Professional Sun, 06 Jul 2008 15:45:46 +0000 http://wordpress.org/?v=2.3.3 By: Justin Leider http://googlemapsbook.com/2006/08/30/shapefiles/#comment-20169 Justin Leider Thu, 17 Jan 2008 19:18:36 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-20169 Wow, this documentation just made my day! Thanks for the great documentation. probably would have taken me a couple days worth of trial and error to get all my shp data imported into SQL. THANKS! Wow, this documentation just made my day! Thanks for the great documentation. probably would have taken me a couple days worth of trial and error to get all my shp data imported into SQL. THANKS!

]]> By: Dan http://googlemapsbook.com/2006/08/30/shapefiles/#comment-7292 Dan Thu, 17 May 2007 20:10:55 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-7292 Thanks for this post; I've been tearing my hair out trying to work out how to make density maps with google or yahoo maps. There's a vast amount of data at http://geodata.grid.unep.ch/: iirc, they have shapefiles of first and second-level administrative boundaries, and a lot of data on population, economics, etc, to go with it. I've been using server-side tools for this kind of thing (e.g. http://www.ohuiginn.net/mt/2006/11/westminsters_map.html), but the next time I have a free afternoon I'll have a bash at doing the same thing as a google maps mashup Thanks for this post; I’ve been tearing my hair out trying to work out how to make density maps with google or yahoo maps.

There’s a vast amount of data at http://geodata.grid.unep.ch/: iirc, they have shapefiles of first and second-level administrative boundaries, and a lot of data on population, economics, etc, to go with it.

I’ve been using server-side tools for this kind of thing (e.g. http://www.ohuiginn.net/mt/2006/11/westminsters_map.html), but the next time I have a free afternoon I’ll have a bash at doing the same thing as a google maps mashup

]]> By: phani http://googlemapsbook.com/2006/08/30/shapefiles/#comment-4205 phani Mon, 05 Mar 2007 12:11:36 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-4205 hi! i have seen ur article. its very interesting. i think u can help me in overlaying a shape file(polygons) which is converted into postgresql table onto google maps. please help me out of how to proceed with. thank u phani hi! i have seen ur article. its very interesting. i think u can help me in overlaying a shape file(polygons) which is converted into postgresql table onto google maps.
please help me out of how to proceed with.

thank u
phani

]]> By: Karl Fallstrom http://googlemapsbook.com/2006/08/30/shapefiles/#comment-4094 Karl Fallstrom Wed, 28 Feb 2007 20:15:38 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-4094 I would think about Oracle Spatial... but I do work at a large firm. It has all the capabilities you require. I would think about Oracle Spatial…

but I do work at a large firm. It has all the capabilities you require.

]]> By: EpiSPIDER » Google Maps Polygons http://googlemapsbook.com/2006/08/30/shapefiles/#comment-275 EpiSPIDER » Google Maps Polygons Thu, 30 Nov 2006 07:55:13 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-275 [...] Posted by herman.tolentino on 29 Nov 2006 at 11:54 pm | Tagged as: Uncategorized Found this great article about creating polygons using SVG! And another one for importing shapefiles from National Atlas with PHP source code to import GPX into a MySQL database. [...] […] Posted by herman.tolentino on 29 Nov 2006 at 11:54 pm | Tagged as: Uncategorized Found this great article about creating polygons using SVG! And another one for importing shapefiles from National Atlas with PHP source code to import GPX into a MySQL database. […]

]]> By: Sami Azmi http://googlemapsbook.com/2006/08/30/shapefiles/#comment-108 Sami Azmi Wed, 18 Oct 2006 09:06:28 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-108 Hi people. I am looking for some help. I went thru ur posts.. they are great. I need some thing to create a web based GIS system capable of handling queries, and has normal GIS operations like zoom in out etc. It should be extendable to an extent that a small Web based Descision Support System can be made out of it. Can u ppl suggest ne thing. Waiting for ur response Sami Hi people.

I am looking for some help. I went thru ur posts.. they are great. I need some thing to create a web based GIS system capable of handling queries, and has normal GIS operations like zoom in out etc. It should be extendable to an extent that a small Web based Descision Support System can be made out of it. Can u ppl suggest ne thing.

Waiting for ur response

Sami

]]> By: Shapefile Tiles with PHP and GD at Beginning Google Maps Applications http://googlemapsbook.com/2006/08/30/shapefiles/#comment-34 Shapefile Tiles with PHP and GD at Beginning Google Maps Applications Sat, 09 Sep 2006 06:11:07 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-34 [...] Last week, I demonstrated some tools for importing Shapefile data into an SQL database. It’s time to put that stuff to work. [...] […] Last week, I demonstrated some tools for importing Shapefile data into an SQL database. It’s time to put that stuff to work. […]

]]> By: Mike http://googlemapsbook.com/2006/08/30/shapefiles/#comment-31 Mike Thu, 07 Sep 2006 16:52:56 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-31 Josh: Thanks for the heads-up on that. For people who have control over their own servers, PostGIS is definitely a very powerful tool worth investigating. We used MySQL in the book; for these articles, I wanted to stick to tools that people are likely to have on their shared hosting environments. (In the next segment, I'll be using GD for generating overlay images, but there will be a later demo of ImageMagick's much superior output...) Josh: Thanks for the heads-up on that. For people who have control over their own servers, PostGIS is definitely a very powerful tool worth investigating. We used MySQL in the book; for these articles, I wanted to stick to tools that people are likely to have on their shared hosting environments. (In the next segment, I’ll be using GD for generating overlay images, but there will be a later demo of ImageMagick’s much superior output…)

]]> By: Josh L http://googlemapsbook.com/2006/08/30/shapefiles/#comment-29 Josh L Thu, 07 Sep 2006 07:06:25 +0000 http://googlemapsbook.com/2006/08/30/shapefiles/#comment-29 Thanks for the interesting post. If not already tied to another database, some folks may be interested in the PostGIS - extensions to PostgreSQL. Easy to install, and very powerful for this kind of stuff. You can use the shp2pgsql utility that comes with it to quickly turn shapefiles to sql in one step. The SQL includes the geometry column, and once in PostGIS it's really easy to do powerful spatial analyses via SQL queries. You can also simplify complicated polygons' output on the fly, easily query for areas, things within a buffered distance, things that intersect sets of polygons, and lots of other stuff. A very simple example using postgis behind google maps is at http://eactive.org/svdp (you can click on the map to get the polygon that point resides in). Nothing complicated, but it's a task made much easier using PostGIS Cheers, -Josh PS I think ogr now has kml output (it reads shapefiles), so that might be of interest as well. Thanks for the interesting post.

If not already tied to another database, some folks may be interested in the PostGIS - extensions to PostgreSQL. Easy to install, and very powerful for this kind of stuff.

You can use the shp2pgsql utility that comes with it to quickly turn shapefiles to sql in one step. The SQL includes the geometry column, and once in PostGIS it’s really easy to do powerful spatial analyses via SQL queries.

You can also simplify complicated polygons’ output on the fly, easily query for areas, things within a buffered distance, things that intersect sets of polygons, and lots of other stuff.

A very simple example using postgis behind google maps is at http://eactive.org/svdp (you can click on the map to get the polygon that point resides in). Nothing complicated, but it’s a task made much easier using PostGIS

Cheers,

-Josh

PS I think ogr now has kml output (it reads shapefiles), so that might be of interest as well.

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