Added a bit more.

There's a nice new module called "RunCPythonScript" for running scripts that don't work too well in IronPython. It let's you run scripts on other versions of python that you have installed on your computer.

Added GeoJson2Rhino script which translates GeoJSON objects (a common data format for GIS) into Rhino Objects. It still needs some testing, but most of the work is done. Please try it out if you have any GeoJSON data around.

GeoJSON format:

http://geojson.org/geojson-spec.html

also, this will hopefully play nice with the PostSites module I've been working on, for importing GIS site data from a database using PostGIS.

PostSites module:

https://github.com/bengolder/postsites

This is a great resource. I've been trying to work around the fact that I can't install the geojson module directly into RhinoPython, and finding this should save me a lot of trouble. Thanks for starting this. 

But before I can engage - I'm having some trouble trying to load a geojson file using your GeoJson2Rhino function.

Right now my script looks like this:

import rhinoscriptsyntax as rs  
import sys  rp_scripts = "rhinopythonscripts"  
sys.path.append(rp_scripts)  
import rhinopythonscripts   
import GeoJson2Rhino as geojson   

layer_1 = rs.GetLayer(layer='Layer 01')  
layer_color = rs.LayerColor(layer_1)   

f = open('test_3.geojson')  
gj_data = geojson.load(f,layer_1,layer_color)  
f.close()

 

In particular:

 f = open('test_3.geojson')  
 gj_data = geojson.load(f)

works fine when I'm trying to extract geojson data from regular python 2.7. However in RhinoPython I'm getting the following error message: "Message: expected string for parameter 'text' but got 'file'"; in reference to the "gj_data = geojson.load(f)" line.

I've been looking at the GeoJson2Rhino script and I think I've set the parameters for the function correctly. Is the issue the way I'm trying to open the file?

Hi Saeran,

The problem is here:

f = open('test_3.geojson')
gj_data = geojson.load(f)

In python open returns a file object, not text. To read the text from the file, you only need to add:

file_obj = geojson.load(f)

gj_data = file_obj.read() # reads the entire file, returns the file contents as one string.

you can also chain the methods together like this:

gj_data = open('test_3.geojson').read() # returns a string

Thanks Ben for responding so quickly!

So I tried out what you suggested:

f = open('test_3.geojson').read() # returns a string
data = geojson.load(f)
print data['features']

but I'm getting the following error message: 

"Message: Unable to translate bytes [C3] at index 0 from specified code page to Unicode."

I added some print statements to the start of the load function in the GeoJson2Rhino.py script but none of them are appearing so it looks like its still just not accepting the f parameter - even when it is a string. 

Alternatively, I copied the modules you imported in the GeoJson2Rhino.py file, and then used the json.load like so:

f = open('test_3.geojson').read() # returns a string
data = json.loads(f)

print data['features']

And this worked perfectly. So now I can load my geojson file and use its dictionaries. But I'm still not sure why it's not working through the GeoJson2Rhino.py module.