0
votes
0answers
22 views

Convert Shp to KML error org2org Error4

I am attempting to convert Shp file to Kml using command line org2org application. I have used this in the past to convert more simple shp files and was sucessful. However I get an error message when ...
4
votes
2answers
87 views

Converting shapefile to raster: Character attributes

I've got a shapefile that I would like to convert into a raster, but the trick is that the attribute I want a raster version of is character data. I'm familiar with geoprocessing using GDAL (in the ...
4
votes
2answers
117 views

How to access Shapefile metadata using OGR?

I'm trying to use ogrinfo to get some details on a shapefile I downloaded. Currently, the only way I know how to do this is to load it into QGIS and manually click around to find any information on ...
2
votes
1answer
67 views

Axis of rendered shape files not showing numbers that are latitude and longitude

I am using rgdal to render some shape file. The first is a set of building zones from NYC Open Data. The second is the NYC coast line from OSM. The Zone files seems to generally render an X axis ...
1
vote
1answer
58 views

Polygons not appearing when creating shapefile based on criteria using GDAL and Python (area calculated properly)

I am looping over the features of a shapefile containing multiple polygons. If certain criteria are met, I want to save the current feature in a new shapefile. I am doing this using GDAL 1.10.0 with ...
3
votes
1answer
78 views

Controlling output linewidth linestyle using gdal_rasterize shapefile shp to Geotiff

I have successfully combined a shapefile (.shp) and a GeoTiff using gdal_rasterize. The shapefile displays as one pixel wide in the GeoTiff, but I need it to be wider and more visible, say, 5 pixels ...
1
vote
2answers
98 views

How to convert Point coordinates into CSV format?

The GDAL documentation describes how to convert a ShapeFile into CSV data. The layer create options (-lco parameter) allows to prepend the coordinates of Point features to the actual attributes ...
1
vote
0answers
201 views

Importing Census TIGER Shape Files to SQL Server 2012?

I've been doing my research on how to import shape files into Microsoft SQL Server 2012. and am still unable to figure out how to do it after hours of playing around with it. I'll document what I've ...
0
votes
1answer
133 views

Why do Shapefiles and GeoJSON behave differently in GDAL Python?

I have a test.shp. I loop over the file, buffer the features, and write the buffers to a new file. I tested writing the buffers to a Shapefile and to a GeoJSON. If I try to use the new buffer layer ...
1
vote
1answer
85 views

Load Raster Values into Shapefile [duplicate]

I have a shapefile containing many points. Some of these points fall within an area for which I have raster data. I would like to load the values of the raster which underlie each point into the ...
1
vote
3answers
189 views

KML to Shapefile using GDAL (LIBKML) - MultiGeometry data not transforming

I am trying to convert a KML file to Shapefile using GDAL (ogr2ogr). Regular KML files convert fine but KML files containing MultiGeometry features (eg: Geometry containing both Point and Polygon) do ...
0
votes
3answers
102 views

How to find the attributes of a shapefile from the command line?

I'm following Mike Bostock's tutorial "Let's Make A Map." He explains how to filter a shapefile using ogr2ogr based on the attributes of the features. I can open a shapefile in QGIS and look at the ...
0
votes
0answers
93 views

why readOGR() is not reading projection information from .spj - r

0 down vote favorite I successfully import a polygon shapefile with readOGR, however the information in the .prj file is not being imported. test class : SpatialPolygonsDataFrame nfeatures : 19407 ...
1
vote
2answers
407 views

Python - GDAL : Polygon to point shape file

I want to read all the points in a polygon shape-file and use their coordinates to make a new point shape file. then find the min and max of the X coordinates. So here is the code I wrote for the ...
1
vote
0answers
70 views

How to join attributes by location with command line

I would like to joint the attributes of 2 shapefiles by location but with a command line (linux). This feature is easy in QGIS but it is VERY slow. Is there a way of doing this with ogr or pyqgis ? ...
-3
votes
1answer
70 views

How can I use ogrinfo to reach information anout a .shp?

How can I use ogrinfo? where should I write it? In the visual studio's command prompt or somewhere else? Can you make some examples? when I use ogrinfo in the windows or visual studio's command ...
1
vote
0answers
61 views

Contours generated from merged TIFs huge - much bigger than individually

I'm generating contours from four 5x5 degree SRTM DEMs in southeastern Australia. I'm using gdalwarp to reproject the DEM, then gdal_contour to generate contours. First, I generated contours for each ...
0
votes
0answers
110 views

How to read vector datasets using GDAL library

Up to now, I have used GDAL in order to read raster information and geotiffs and show them with the help of OpenGL. Now I have a vector dataset, and by that, I mean I have the files with types: DBF ...
2
votes
2answers
275 views

Python GDAL/OGR: retrieved feature is NoneType

I'm doing some scripts in Python to deal with shapefiles, and I have an issue I don't understand. I'm looping over a shapefile, and I want to retrieve the geometry of each feature, but very often I ...
2
votes
2answers
236 views

Driver error when converting MapInfo file to Shapefile with ogr2ogr

I am trying to convert a MapInfo file to an ESRI shapefile using GDAL's ogr2ogr command as described here, but I am getting the following error: FAILURE: Unable to open datasource `Iceland2pts.mif' ...
0
votes
1answer
129 views

Can't convert geometry from Dgn file to Shape file?

I am using below codes to try convert geometry from a Dgn file to Shape file. But, I can't exit the Feature reading loop. Are there anyone know why and how to fix it ? Please download the dgn file ...
1
vote
1answer
285 views

Python GDAL/OGR: WGS84 & meters units

I'm dealing with shapefiles projected in: GEOGCS["GCS_WGS_1984", DATUM["WGS_1984", SPHEROID["WGS_84",6378137,298.257223563]], PRIMEM["Greenwich",0], ...
11
votes
1answer
423 views

How to rename field names in a shapefile from the commandline?

I need to rename the field names (attributes) in a shapefile. Is there an easy way to do this from the command line?
2
votes
1answer
217 views

OGR - Weird GeomType -2147483645 on polygon shapefile

I am trying to import a shapefile (multipolygon) in an app with ogr but I got an error about invalid geom type. If I inspect the data with ogr like this: datasource = ogr.Open("c:\\temp\\data.shp") ...
9
votes
2answers
3k views

How can I get a shapefile from a postgis query?

My data is in a PostGIS database. I would like to generate a shapefile from a query. How can I do that?
1
vote
3answers
2k views

How can I get the proj4 string or EPSG code from a shapefile .prj file? [duplicate]

I have to work with a shapefile defined in an unusual projection, which my GIS software does not know about. How can I get the proj4 definition or the EPSG code for the projection?
1
vote
0answers
145 views

How to use GDAL to burn a selected value from one raster into another?

I think this should be a relatively simple process, but I'm not quite sure how to approach it. I have a shapefile containing 1000's of polygons. I also have 19 rasters. All of the polygons fall ...
4
votes
1answer
504 views

Can't export a polygon shapefile to MySQL using ogr2ogr?

I am having problems with ogr2ogr and keep getting different versions of the error: ERROR 1: MySQL error message: The used table type doesn't support SPATIAL indexes. Description: ALTER TABLE ...
3
votes
1answer
2k views

How do you open shapefiles with ogr2ogr

I'm following along the D3 tutorial, and on this line: ogr2ogr \ -f GeoJSON \ -where "adm0_a3 IN ('GBR', 'IRL')" \ subunits.json \ ne_10m_admin_0_map_subunits.shp run into the following ...
4
votes
2answers
297 views

How do I Capture GDAL projection and create matching output (OGR or GDAL) shape files?

Working in C++, using GDAL and OGR: Depending on what the user has supplied for image input, I need to output point (or other) shape files in the same projection as the input raster images. The ...
2
votes
1answer
160 views

Tiling Rasters based on an existing Polygon Shapefile (Vector Grid)

I have a tile index representing the tile scheme used to tile Lidar data. I want to tile imagery rasters using the same tiling scheme. I have not found anyway using open source tools to tile a ...
3
votes
4answers
2k views

How do I use ogr2ogr to convert a GML to shapefile in Python

I am trying to convert a GML to an ESRI shapefile using ogr2ogr utility in a python script. I have successfully installed the GDAL/OGR package via osgeo but I am now struggling to find/understand ...
3
votes
2answers
896 views

Shape-file encoding problem in QGIS 1.9.0 (built with GDAL 1.9.2)

I have googled a lot but failed to find the answer. My configuration is: Ubuntu 11.10 Quantum GIS - 1.9.0-Master 'Master' (caae7b7) GDAL 1.9.2, released 2012/10/08 Shape-files refuse to open in ...
3
votes
1answer
256 views

How to stop writeOGR from abbreviating Field Names when using “ESRI Shapefile” driver

I'm currently using the following script to add some attribute data from a table to lots of individual shapefiles: library(rgdal) specieslist <- read.csv("SpeciesList1.txt", header=F) attdata ...
1
vote
3answers
371 views

Getting Field value for a given coordinate out of ESRI Shapefile using GDAL/OGR

I have a bunch of ESRI shapefiles that contain Land Cover data across Canada (provided by Geobase). I need to query the files and obtain the value of a certain field (called COVTYPE) in a given ...
3
votes
2answers
312 views

Eliminate small polygons from shapefile

I downloaded GTOPO30 *.DEM files, and extracted a contour line at 2000m altitude using gdal_contour. In the resulting shapefile, I have many small polygons in areas where the altitude is close to that ...
3
votes
3answers
2k views

How to generate a shapefile containing an UTM grid (graticule)?

I'm looking for a shapefile containing an 1000m or 2000m UTM grid ("graticule"). All I was about to find on the web is a 10000m UTM grid (here: http://en.giswiki.net/wiki/UTM) and I am aware that a ...
11
votes
2answers
5k views

ogr2ogr converting to shapefile - how to select feature types?

Shapefiles can only have one geometry type, but many other formats (kml, geojson) can have multiple types. When converting to shapefiles, is it possible to to tell ogr2ogr to create multiple ...
3
votes
1answer
189 views

Problem with precision when convert from WKT to shapefile

I have a problem with converting from WKT to shapefile in pygdal. In wkt I have fields with precision (for example real 7.2). When I create a shapefile I have field numeric with no precision (numeric ...
6
votes
7answers
1k views

how to overlay shapefile and raster?

I have a shapefile with polygons. And I have a global raster file. I want to overlay the shapefile's polygons onto the raster grid and calculate the mean raster value for each polygon. How can I do ...
10
votes
2answers
2k views

API documentation for Gdal/Ogr with C#

I want to assign projection to shapefile in my web C# application, for this i am using Gdal/OGR/OSR C# bindings and add osr_csharp.dll and ogr_csharp.dll references. But i am facing some difficulty ...
5
votes
3answers
717 views

How to convert factfinder2.census.gov map data to KML?

I've downloaded a map from http://factfinder2.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=DEC_10_SF1_P1 (limited to San Francisco census tracts), and I'd like to convert it to KML ...
1
vote
1answer
278 views

How to aggregate points with same value into polygons from a shapefile using GDAL or any other opensource solution

I have a shapefile with around 19,000 points. Its basically export from a raster. No i need to extract polygons, by aggregating the points which have same value.The field who's value i am going to use ...
3
votes
1answer
271 views

Polygon Shared Boundaries in GML

Last week I was told on a phone conference that GML supports shared boundaries in Polygon's. I have been unable to find any documenatation to substantiate the claim. Here is the situation: I have a ...
5
votes
1answer
1k views

Extracting Lat/Lng from Shapefile using OGR2OGR/GDAL [closed]

I'm trying to extract lattitude/longitude values for the streets in this shapefile: http://gispub02.sfgov.org/website/sfshare/catalog/stclines_streets.html I've seen it reommended in many places that ...
2
votes
2answers
2k views

ogr2ogr srs options: where is the well known definition determined?

In the ogr2ogr documentation it says that when using -a_srs srs_def: Srs_def can be a full WKT definition (hard to escape properly), or a well known definition (ie. EPSG:4326) or a file with a WKT ...