Vjylku

Output visual diagram of picture

Are hand made posters acceptable in Academia?

What should be the ideal length of sentences in a blog post for ease of reading?

Friend wants my recommendation but I don't want to give it to him

Pre-Employment Background Check With Consent For Future Checks

Do people actually use the word "kaputt" in conversation?

Strange behavior in TikZ draw command

Could a welfare state co-exist with mega corporations?

Started in 1987 vs. Starting in 1987

Why is "la Gestapo" feminine?

Would this string work as string?

If the Dominion rule using their Jem'Hadar troops, why is their life expectancy so low?

"Oh no!" in Latin

Is this saw blade faulty?

How do you justify more code being written by following clean code practices?

Reason why a kingside attack is not justified

What is the period/term used describe Giuseppe Arcimboldo's style of painting?

Toggle window scroll bar

Taking the numerator and the denominator

Why is participating in the European Parliamentary elections used as a threat?

In the event of Brexit being postponed beyond the EU elections, will UK voters in EU countries be eligible to participate?

Why is indicated airspeed rather than ground speed used during the takeoff roll?

Relations between homogeneous polynomials

Magnifying glass in hyperbolic space

Load multipolygons from GeoJSON into GeoDjango model

Help simplifying multipolygons in geodjangoGenerating GeoJSON tiles from GeoDjango - basic overview?Receiving data from php script for geoJSON TileLayer?From featureclass (or shp) to WKT e GeoJSONInvalid GeoJSON when inserting data to a CartoDB (PostGIS) table from LeafletLeaflet: Change displayed column on clickfrom geometrycollection to polygon geometry with pythonGeoJSON MultiPolygon/Polygon to PostgreSQL using Python/Psycopg2Parse .geojson file in RBind parsed Feature Collection JSON object to infowindow content

1

I have a simple model:

from django.contrib.gis.db import models



class CountryShapes(models.Model):

    geonameid = models.PositiveIntegerField(primary_key=True)

    geom = models.MultiPolygonField()

and a GeoJSON file from here:
http://download.geonames.org/export/dump/shapes_simplified_low.json.zip

I am attempting to load the data into my model using this:

        import json

        from django.contrib.gis.geos import GEOSGeometry



        with open('shapes_simplified_low.json', 'r') as fd:

            data = json.load(fd)

            for feature in data['features']:



                geom = GEOSGeometry(str(feature['geometry']))

                geonameid = feature['properties']['geoNameId']



                country = CountryShapes( # throws error here

                    geonameid=geonameid,

                    geom=GEOSGeometry(geom))

                country.save()

and I get this error:

TypeError: Cannot set CountryShapes SpatialProxy (MULTIPOLYGON) with
value of type: class 'django.contrib.gis.geos.polygon.Polygon'

GEOSGeometry seems to create the geometry fine, its when I pass the geom argument to my model it throws the error.

geojson geodjango geos

share|improve this question

edited Feb 13 at 2:39

Vince

14.7k32749

asked Feb 12 at 22:37

its30its30

338113

bumped to the homepage by Community♦ 3 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

add a comment | 

1

I have a simple model:

from django.contrib.gis.db import models



class CountryShapes(models.Model):

    geonameid = models.PositiveIntegerField(primary_key=True)

    geom = models.MultiPolygonField()

and a GeoJSON file from here:
http://download.geonames.org/export/dump/shapes_simplified_low.json.zip

I am attempting to load the data into my model using this:

        import json

        from django.contrib.gis.geos import GEOSGeometry



        with open('shapes_simplified_low.json', 'r') as fd:

            data = json.load(fd)

            for feature in data['features']:



                geom = GEOSGeometry(str(feature['geometry']))

                geonameid = feature['properties']['geoNameId']



                country = CountryShapes( # throws error here

                    geonameid=geonameid,

                    geom=GEOSGeometry(geom))

                country.save()

and I get this error:

TypeError: Cannot set CountryShapes SpatialProxy (MULTIPOLYGON) with
value of type: class 'django.contrib.gis.geos.polygon.Polygon'

GEOSGeometry seems to create the geometry fine, its when I pass the geom argument to my model it throws the error.

geojson geodjango geos

share|improve this question

edited Feb 13 at 2:39

Vince

14.7k32749

asked Feb 12 at 22:37

its30its30

338113

bumped to the homepage by Community♦ 3 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

add a comment | 

I have a simple model:

from django.contrib.gis.db import models



class CountryShapes(models.Model):

    geonameid = models.PositiveIntegerField(primary_key=True)

    geom = models.MultiPolygonField()

and a GeoJSON file from here:
http://download.geonames.org/export/dump/shapes_simplified_low.json.zip

I am attempting to load the data into my model using this:

        import json

        from django.contrib.gis.geos import GEOSGeometry



        with open('shapes_simplified_low.json', 'r') as fd:

            data = json.load(fd)

            for feature in data['features']:



                geom = GEOSGeometry(str(feature['geometry']))

                geonameid = feature['properties']['geoNameId']



                country = CountryShapes( # throws error here

                    geonameid=geonameid,

                    geom=GEOSGeometry(geom))

                country.save()

and I get this error:

TypeError: Cannot set CountryShapes SpatialProxy (MULTIPOLYGON) with
value of type: class 'django.contrib.gis.geos.polygon.Polygon'

GEOSGeometry seems to create the geometry fine, its when I pass the geom argument to my model it throws the error.

geojson geodjango geos

share|improve this question

edited Feb 13 at 2:39

Vince

14.7k32749

asked Feb 12 at 22:37

its30its30

338113

from django.contrib.gis.db import models



class CountryShapes(models.Model):

    geonameid = models.PositiveIntegerField(primary_key=True)

    geom = models.MultiPolygonField()

        import json

        from django.contrib.gis.geos import GEOSGeometry



        with open('shapes_simplified_low.json', 'r') as fd:

            data = json.load(fd)

            for feature in data['features']:



                geom = GEOSGeometry(str(feature['geometry']))

                geonameid = feature['properties']['geoNameId']



                country = CountryShapes( # throws error here

                    geonameid=geonameid,

                    geom=GEOSGeometry(geom))

                country.save()

share|improve this question

edited Feb 13 at 2:39

Vince

14.7k32749

asked Feb 12 at 22:37

its30its30

338113

share|improve this question

edited Feb 13 at 2:39

Vince

14.7k32749

asked Feb 12 at 22:37

its30its30

338113

edited Feb 13 at 2:39

Vince

14.7k32749

edited Feb 13 at 2:39

Vince

14.7k32749

asked Feb 12 at 22:37

its30its30

338113

asked Feb 12 at 22:37

its30its30

338113

1 Answer
1

active

oldest

votes

0

The issue: You're trying to save a feature of type 'Polygon' to a field defined for MultiPolygons. (You'll notice a list of geojson features often have both Polygons and MultiPolygons.)

I'm using this hack: If a feature is type Polygon, change it to type MultiPolygon by changing type and putting the coordinates within an array.

    geom = GEOSGeometry(str(feature['geometry']))

    if geom.type == 'Polygon':

      geom['type'] = 'MultiPolygon'

      geom['coordinates'] = [feature['geometry']['coordinates']]



    geonameid = feature['properties']['geoNameId']



    country = CountryShapes( # throws error here

        geonameid=geonameid,

        geom=GEOSGeometry(geom))

    country.save()

PS: I have almost no experience in Python.

share|improve this answer

edited Feb 17 at 23:38

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I put this project on hold for now but will revisit it at some point and let you know if this works. Thanks for the suggestion.
  
  – its30
  Feb 28 at 21:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think you could also create a Multipolygon directly no? E.g. feature.geom = MultiPolygon(feature.geom)
  
  – Alexander
  Mar 14 at 9:57
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "79"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f311970%2fload-multipolygons-from-geojson-into-geodjango-model%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

0

The issue: You're trying to save a feature of type 'Polygon' to a field defined for MultiPolygons. (You'll notice a list of geojson features often have both Polygons and MultiPolygons.)

I'm using this hack: If a feature is type Polygon, change it to type MultiPolygon by changing type and putting the coordinates within an array.

    geom = GEOSGeometry(str(feature['geometry']))

    if geom.type == 'Polygon':

      geom['type'] = 'MultiPolygon'

      geom['coordinates'] = [feature['geometry']['coordinates']]



    geonameid = feature['properties']['geoNameId']



    country = CountryShapes( # throws error here

        geonameid=geonameid,

        geom=GEOSGeometry(geom))

    country.save()

PS: I have almost no experience in Python.

share|improve this answer

edited Feb 17 at 23:38

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I put this project on hold for now but will revisit it at some point and let you know if this works. Thanks for the suggestion.
  
  – its30
  Feb 28 at 21:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think you could also create a Multipolygon directly no? E.g. feature.geom = MultiPolygon(feature.geom)
  
  – Alexander
  Mar 14 at 9:57
  

  
  
  
  

add a comment | 

0

The issue: You're trying to save a feature of type 'Polygon' to a field defined for MultiPolygons. (You'll notice a list of geojson features often have both Polygons and MultiPolygons.)

I'm using this hack: If a feature is type Polygon, change it to type MultiPolygon by changing type and putting the coordinates within an array.

    geom = GEOSGeometry(str(feature['geometry']))

    if geom.type == 'Polygon':

      geom['type'] = 'MultiPolygon'

      geom['coordinates'] = [feature['geometry']['coordinates']]



    geonameid = feature['properties']['geoNameId']



    country = CountryShapes( # throws error here

        geonameid=geonameid,

        geom=GEOSGeometry(geom))

    country.save()

PS: I have almost no experience in Python.

share|improve this answer

edited Feb 17 at 23:38

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I put this project on hold for now but will revisit it at some point and let you know if this works. Thanks for the suggestion.
  
  – its30
  Feb 28 at 21:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think you could also create a Multipolygon directly no? E.g. feature.geom = MultiPolygon(feature.geom)
  
  – Alexander
  Mar 14 at 9:57
  

  
  
  
  

add a comment | 

The issue: You're trying to save a feature of type 'Polygon' to a field defined for MultiPolygons. (You'll notice a list of geojson features often have both Polygons and MultiPolygons.)

I'm using this hack: If a feature is type Polygon, change it to type MultiPolygon by changing type and putting the coordinates within an array.

    geom = GEOSGeometry(str(feature['geometry']))

    if geom.type == 'Polygon':

      geom['type'] = 'MultiPolygon'

      geom['coordinates'] = [feature['geometry']['coordinates']]



    geonameid = feature['properties']['geoNameId']



    country = CountryShapes( # throws error here

        geonameid=geonameid,

        geom=GEOSGeometry(geom))

    country.save()

PS: I have almost no experience in Python.

share|improve this answer

edited Feb 17 at 23:38

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012

    geom = GEOSGeometry(str(feature['geometry']))

    if geom.type == 'Polygon':

      geom['type'] = 'MultiPolygon'

      geom['coordinates'] = [feature['geometry']['coordinates']]



    geonameid = feature['properties']['geoNameId']



    country = CountryShapes( # throws error here

        geonameid=geonameid,

        geom=GEOSGeometry(geom))

    country.save()

share|improve this answer

edited Feb 17 at 23:38

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012

answered Feb 17 at 22:07

Mike FabrikantMike Fabrikant

1012