3

Can i convert more than one shapefile .shp to topojson. Can this be performed using batch processing?

I can convert shape file to topojson one by one but i have about 6000 files and i don't want to merge them i want them to be separately converted to topojson.

I can also batch process ogr2ogr but don't know how to perform that on topojson. Is there any way i could perform this task using a folder of is there any alternate solution to this problem.

4

A simple bash script should do the trick. For example, you can paste this into your terminal, assuming you’re in the same directory as your shapefiles:

for shapefile in *.shp; do
  topojson -o `basename -s .shp $shapefile`.json -- $shapefile
done

Alternatively, you can put this code into a script, batch.sh:

#!/bin/bash

for shapefile in *.shp; do
  topojson -o `basename -s .shp $shapefile`.json -- $shapefile
done

Make the script executable using chmod u+x batch.sh, and then run it as ./batch.sh.

1
  • It worked like this for /R %f in (*.shp) do topojson -o "%~dpnf.topojson" "%f" thanks for your help – Saad Ali Oct 30 '13 at 6:05
1

It's not possible to read and write the TopoJSON format using ogr2ogr:

Starting with OGR 2.0, the GeoJSON driver can read the TopoJSON format

(Source: http://www.gdal.org/ogr/drv_geojson.html)

Instead, you can use the topojson command-line application: https://github.com/mbostock/topojson/wiki An example of its application: http://blog.thematicmapping.org/2013/06/converting-shapefiles-to-topojson.html

1

I edited the code and it worked this way.

for /R %f in (*.shp) do topojson -o "%~dpnf.topojson" "%f"

Thanks

The procedure Included

Install Fw tools Install Node.js Set proxy in fwtools if required using

npm config set proxy http://10.x.x.x:port

Install Python the default path should be c:\python27\python.exe

after that run command set python=%pyhton%;c:\python27\python.exe

Install Visual Studio 2010

npm install -g topojson --python

or if it does not work try

npm install -g topojson --python --msvs_version=2010

If there is some error during installation try installing Install Visual c++ 2005

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.