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I have shapefiles i.e. *.shp, *.dbf and *.shx files.

I need to read geo coordinates from these files and overlay the area on Google Maps at the right location.

I believe that *.shp and *.dbf files contain coordinates.

I have also used gotools api to read ArcGIS files and am able to generate map.

Is it possible to do this?

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migrated from stackoverflow.com Aug 7 '13 at 3:36

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By "gotools api" do you mean GeoTools? –  PolyGeo Aug 8 '13 at 10:23

3 Answers 3

Make sure you shapefile is projected correctly then you can use Google Engine to upload your shapefile, see this link Uploading Data to Google Maps Engine.

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I suggest you taking a look at Reading ESRI Shapefiles with PHP.

It is a class written in PHP that can be used to read shapefiles. Once you manage to read a shapefile, you can easily extract its contents i.e. latitudes and longitudes. Here is a snippet from the webpage:

// including the shapefile reader class
    require 'ShapeFile.inc.php';

// importing the downloaded shapefile
    $shp = new ShapeFile("5961.shp", array('noparts' => false));

Once you got the coordinates from the shapefile on the server side, just put them into an array and use PHP's json_encode() command to create a JSON array from the PHP array, set the content type to application/json or text/json and echo the whole stuff. Then you can process this on the client side easily.

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Open your .dbf in Excel and save it as a .csv

You can then add this .csv file to Google Maps and specify your X,Y columns with the 'Create Map' tool:

enter image description here

@johanvdw I thought the user stated he has the X,Ys already in the .dbf

@Devdatta Tengshe I assumed he is trying to view his shapefile in Google Maps, I've uploaded a screenshot - from here you can import your files into GM as I thought the user was requesting. Maybe I have misunderstood the question!?

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This would only work if the dbf file contains X and Y columns. If this is not the case you could add them (if your file is a point shape file) using eg saga gis. This has a module "add coordinates to points". –  johanvdw Nov 13 '13 at 9:25
I don't see how you can convert the 'shape' part of the ShapeFile into CSV. It's not even clear what the 'Create Map' tool is. –  Devdatta Tengshe Nov 13 '13 at 9:25
Edited. I would like to know if I have misinterpreted the question and thus keep/delete my answer accordingly. –  Rob Lodge Nov 13 '13 at 9:44

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