GEOJSON python script (updated v1.3)

here is a python script that export vertex and attributes to GEOJSON format.

GEOJSON_export: A Plugin that export surfaces and its attributes to a GEOJSON file
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Need pygeoj.py It must be in your script's folder
by Karim Bahgat https://github.com/karimbahgat
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TODO :
use something like : https://github.com/karimbahgat/PyCRS
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Copyright (c) 2015, Guillaume Meunier <alliages@gmail.com>
GEOJSON_export is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

GEOJSON_export is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

GNU General Public License a href="http://www.gnu.org/licenses/&gt">http://www.gnu.org/licenses/>.

@license GPL-3.0+ a href="http://spdx.org/licenses/GPL-3.0+&gt">http://spdx.org/licenses/GPL-3.0+>

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    Args:
        path: path where to export
        filename: filename of your JSON without its extension (GEOJSON added)
        using_keys: which key attributes to export, 'id' by default
        s_names: values of 'id' key
        s_keys: normally each surfaces user attributes' keys
        s_values: normally each surfaces user attributes' values
        s_vertex: vertex of each surfaces
        run: do the export

    Returns:
        out: various information
        coordiantes: coordinates in JSON format
        properties: properties in JSON format

VER 1.3

few bugfixes

31_5_2016

VER 1.2

create multipolygon (with holes and multiple objects)

23_3_2016

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VER 1.1

resolved problem with geometry check in qgis by closing completely polygon

5_1_2016

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VER 1.0

3_12_2015

In Extra category

code is here : https://gist.github.com/Alliages/8dbfce7cdd24383342b0

Attachments:

pygeoj.py, 24 KB
2015-12-03 22_29_12-Grasshopper - export_geojson3_.png, 110 KB
GEOJSON_export.ghuser, 6 KB

Replies to This Discussion

Permalink Reply by Giulio Piacentino on December 7, 2015 at 7:14am

Hi Guillaume,

this is nice! It could go to the 'Sample and example files' section of the site.
You can move that yourself, if you want.

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Guillaume Meunier on December 7, 2015 at 1:23pm

thanks and done

Permalink Reply by Guillaume Meunier on January 5, 2016 at 6:14am

updated version 1.1 that resolved problem with geometry check in qgis by closing completely polygon

Permalink Reply by Guillaume Meunier on March 25, 2016 at 2:15am

updated to version 1.2 that now export all sorts of polygon, even multipolygon (polygon with hole or separated polygon)

Permalink Reply by Reinhard Koenig on May 28, 2016 at 3:52pm

Dear Guillaume,

thanks for providing this script! That's exactly what I was looking for.
Could you also upload the .gh file to understand better how you provide the input data?

Best regards

Reinhard

Permalink Reply by Guillaume Meunier on May 30, 2016 at 6:08am

my GH file is a kind of a mess. The last script you see on the screenshot is a simple VB script that concat 2 trees.

Basically the script divide objects between geometries with or without holes (CapEx function)

if without, it only project coordinates using gHowl and Mosquito

if with, the main objective is to separate outer and inner edges then insert "inner, inner" and re-merge

Permalink Reply by Guillaume Meunier on May 30, 2016 at 7:00am

Permalink Reply by Reinhard Koenig on May 30, 2016 at 4:24pm

Dear Guillaume,

many thanks for your reply. This helps a lot.

Am I right, that the GeoJSON export works only if I provide Attributes and Keys as string per surface? I tried to use only a tree of vertexes as shown in your figure, but this is obviously not sufficient... so I need to create the corresponding strings, too?

Best regards

Reinhard

Permalink Reply by Guillaume Meunier on May 31, 2016 at 1:27am

on my gist i add a bugfixe (version 1.3) https://gist.github.com/Alliages/8dbfce7cdd24383342b0

now you can use it without key and value but you still need names

i'll change files here this week

Permalink Reply by Guillaume Meunier on May 31, 2016 at 1:34am

Updated version 1.3

2 bugfixes :