A vector data storage format for storing the location, shape, and attributes of geographic features. Often referred to as 'an ESRI shapefile', as ESRI developed it.

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Convert Postscript (*.ps), Encapsulated Postscript (*.eps), or Adobe Illustrator (*.ai) files to shapefile?

Are there any programs which can convert from Postscript, Encapsulated Postscript, or Adobe Illustrator file formats to a shapefile? What about adding geo-referencing? I'm also open to recipes using ...
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1answer
25k views

How to change the unit of measure from degrees to meters in QGIS?

I am running QGIS 1.7.0 on windows, and I donwloaded a shapefile of census block group boundaries from TIGER. This file appears to be in the WGS 84 coordinate system, and when I open it in QGIS the ...
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2answers
3k views

what is the best way to programmatically convert between WKT and Proj4 string?

some shapefiles have a .prj file associated with it. and the .prj file contains the projection info of the shapefile in the format of WKT. Sometimes I need to convert WKT to proj4 string, and ...
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2answers
540 views

Batch Convert Folder of Shapefiles to KML / KMZ

I am looking to convert a folder with multiple shapefiles (over 100) to KML/KMZ files. I am sure I can build a model in ArcGIS to do this conversion but I am unsure on the iteration I should use. I ...
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1answer
357 views

Can I just swap out a .prj file to reproject a shape file?

I'm an experienced software developer -- but a GIS noob. I have a shape file that I am trying to turn into a SVG map with Kartograph. When I try to run Kartograph I get this error: ERROR 6: No ...
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3answers
10k views

How to display a Shapefile on a browser? -offline-

Plot points on a Shapefile like this: https://github.com/gka/pyshpgeocode and then convert it to HTML and display it on a browser? Is this practical method to display the map on a browser? Any cons ...
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1answer
1k views

Error when using pgsql2shp

I try to export geographical data from a postgis database to a shapefile with pgsql2shp. Normally this works fine, but now I receive the following error. Preparing table for user query... Done. ...
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1answer
1k views

SQL Query to Reverse Geocoding in PostGIS

I try to do Reverse Geocode from my shapefile on the database. I'd already try with Spatialite and PostGIS to put shapefile (.shp) into it. But I'm still can't delivered my objection about reverse ...
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1answer
3k views

How to convert Shapefile geometries to WKB using OGR?

I got the geometry of a feature of the shapefile, and i want to save that geometry in the postgis (in WKB formats like it happens when we import shapefiles using shp2pgsql and psql commands). How do I ...
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2answers
139 views

Identify this state outline file

Some time back, I came across a site that was offering sets of US state outlines that were intended to be attractive/artistic rather than geographically accurate. I only have this copy of the outline ...
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1answer
6k views

Importing shapefiles to SQL Server

I often use the brilliant SQL Server 2008 Spatial Tools to import shapefiles into SQL Server 2008. This works absolutely fine but it leaves me wondering, how do Microsoft expect end users of SQL ...
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207 views

Reading shapefile tolerance in python

Is there a way to get the cluster or xytolerance from a shapefile into python using free/open source software? I'm currently using the pyshp package and can't see methods for this anywhere. Also it ...
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4answers
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How to create a multi-story building infrastructure web map? [closed]

I have absolutely no experience working with GIS before. During a recent meeting, our client was bouncing around their complaints about how detailed our annual reliability reports were and openly ...
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3answers
12k views

How to convert coverage (.adf) to shapefile?

Is there any tool or software except ArcGIS which I can use for converting coverage (.adf) files to shapefiles?
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2answers
923 views

Reordering polygon shapefile permanently?

I've written a script which produces a polygon shapefile of the extents of all the thousands of rasters in our library. I want to organise the FID so that the files with the largest extents are on the ...
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1answer
497 views

Python3 libraries for GIS analysis

I am trying to do some spatial data analysis in Python 3 now, and I was wondering what the best libraries are for GIS in Python 3. The Fiona library was developed with Python 3.3 but the Python 3+ ...
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1answer
2k views

Get shape filename in attribute field using field calculator

I apologize for crossposting against the ESRI geoprocessing forum, but it seems like this one gets answers. I'd like to have a modified append tool (ArcToolbox) that takes multiple shapefiles with ...
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3answers
4k views

How To Convert A Set of ARC/Info ASCII .e00, .e01, .e02, etc Files Into .shp Files

I have a set files that I downloaded with extensions (.e00, .e01, .e02, etc). I have read that these are files used by ARC Info mainly, but I do not have ARC and nor am I really that interested in ...
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1answer
217 views

Adding Route Shapefile (PolylineM) to QGIS?

I'm new to QGIS (and to this amazing forum as well) and I already have an issue : I received a Route Layer in SHP format (PolylineM). I've easily loaded this file into QGIS but it doesn't seem to ...
7
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1answer
183 views

Shapefile Polygon does not display in QGIS

I am attempting to import a Shapefile into QGIS. When I import it, the boundary is shown on the list, but when I try to view it in the mapping area, it does not show up. I can get it to show the ...
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5answers
1k views

From .shp to .kml to .shp Without Losing Attributes

I've converted a shapefile with attributes to a .kml for a client. The .kml and attributes were then edited within google earth. I received the updated .kml and now I need to get it back to .shp. ...
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3answers
8k views

Finding municipal-level administrative boundary data for India?

Does anyone know how to find a shapefile with boundaries of Indian municipalities? I have tehsil boundaries as for year 2001, but I would like boundaries of municipalities and, ideally, also ...
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1answer
3k views

Generating tiles for osm/esri shapefiles

I've generated tiles for OpenStreetMap .OSM files using Maperitive and quickly consumed them with leaflet (with no tile cache yet). I'm now looking for the right and simple way to do that also with ...
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1answer
272 views

How do I optimise performance on a local QGIS + PostGIS installation?

I'm learning how to manage a local PostGIS (ver 2.1) database, with spatial indexing enabled on the shapefiles that I've imported (using the PostGIS Shapefile Import/Export Manager). I have imported a ...
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3answers
2k views

Best choice for building static maps: PostGIS, SpatiaLite or Shapefile?

I usually build static topographic maps, which are mostly printed. I'm often using OSM and rasterfiles (mainly different DEMs). The areas I'm mapping seldom exceeds 20.000 km². I'm using exclusively ...
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3answers
6k views

Adding new record with specific coordinates into shapefile using ArcGIS for Desktop?

I need to create a new point record in my shapefile. When I use the Create Features tool in the Editor tool, I can click anywhere on my map to create a point, but when I go into the attribute table to ...
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1answer
8k views

Copy single feature into another feature class

I do a lot of editing, in this case areas. Sometimes I add an area to one shapefile, only to realise a bit later that it should have been in another. Is there an easy way of copying only that ...
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2answers
9k views

Exporting shapefile to PostGIS database in QGIS

How do I export a vector shapefile to PostGIS database? I am asking what format I have to export it.
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1answer
645 views

How to determine optimal windmill placement to maximize production?

How can I add automatically the maximum number of points (dots) with 6m diameter and 100m distance each point from other into an area. The dots will present the windmill base (6m) and I want the ...
6
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1answer
8k views

How to re-project shapefiles?

I wanted to re-project a QGIS project, but there is no such option. When searching for an answer I see ogr2ogr suggested for this task, by re-projecting each vector layer (shapefile in this example). ...
6
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1answer
5k views

How do I edit shape file attribute tables so they all have the same information?

I am trying to merge several pipeline shapefiles using GEOMERGE but it cannot complete the function because they have different column definitions. So I need to edit the attribute tables so that ...
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1answer
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ogr2ogr selecting features by attributes

I am writing a shapefile after some processing; however, in the final step I need to do some selection by attributes from the the shapefile. I am using the command in a shell with the aim of using it ...
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2answers
4k 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 ...
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3answers
310 views

Is the filename of a shapefile the same as its Feature Class name?

This is a very basic question, but I'm not finding the answer on Google or here... I have a bundle of files I have to submit in an incredibly specific format. Our sub-consultants gave us a set of ...
6
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3answers
1k views

What is the cause of 'tearing' of polygons (artifacts) using R, ggplot and geom_polygon?

Thanks to the answer given in this question I have been able to subset and draw a map of electoral divisions in part of the UK, in this case Pembrokeshire. The resulting data frame is large and ...
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2answers
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Is it possible to change the field length of a shapefile to over 255?

The maximum field length that I can specify is 255 and because of that I'm having problems with the input attributes, which have a size greater than 255. What alternatives are there for having longer ...
6
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3answers
13k views

Using ArcMap, how may I convert a shapefile to use decimal degrees?

I have a shapefile that currently uses meters as the measure for its coordinate system, but the map framework I wish to use expects decimal degrees. I'd like to reproject my shapefile to use decimal ...
6
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4answers
4k views

Where can I find a shapefile for the coastline of North America?

I am looking for a shapefile representing the coastlines of North America, such as something like this: http://www.diva-gis.org/gdata Does anyone have any suggestions?
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3answers
4k views

Check if shapefiles exists in folder

In ArcGIS modelbuilder I want to check if a shapefiles exists, if not I want to create the shapefile in that folder. I guess the calculate value tool within ArcGIS modelbuilder can be used, but I need ...
6
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2answers
1k views

How is the default label field chosen by ArcMap?

I have 2 questions: I know how to manually go to Layer Properties>Labels tab>Label Field and choose my label field. I also know that I could set up my primary label field and save the setting as a ...
6
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4answers
2k views

Why doesn't the split tool return any records in the attribute table?

I've been trying to split a large land use shapefile using a set of study area polygons as the split feature, but when the function finally finishes running (the land use dataset is quite large), all ...
6
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3answers
3k views

2010 Census Tiger County shp file with defined coastal land area

I am looking for a 2010 Census Tiger Shape file that hugs the coastline and doesn't include the ocean in county boundaries. I have a pre 2010 file that did this and I can't seem to find a 2010 ...
6
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1answer
686 views

overlay county shapefiles for 2 different years

I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay these two files so that they do the union and indicate the percentage of the land in 1880 that went ...
6
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3answers
2k views

How to load OSM data into PostGIS preserving all Tags?

I am new to the field of GIS and am trying to view source tags in OSM. I have downloaded the shapefiles from http://downloads.cloudmade.com and have loaded them into Postgres. When I view the data, I ...
6
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2answers
93 views

Define projection at the record level

Hopefully this isn't too dumb a question, but is it possible to define projection at the record level, instead of a whole layer or table? I want to create a "project" database for all the work my ...
6
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1answer
4k views

Programmatically adding shapefile to data frame in ArcMap? [duplicate]

I have a toolbox with python script which creates a shapefile from JSON txt file, but it does not show the generated shapefile in arcmap, i have to add it from the output location. What code shall I ...
6
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1answer
4k views

GIS, R and shapefiles

I have some data that encodes locations in certain countries, such as the US and China, that I would like to map. The data includes location name in Latin, extended Latin and other scripts (Japanese, ...
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1answer
1k views

Determine if shapefile and raster overlap in python

I am building a script in python using osgeo/gdal. I have a set of shapefiles and a set of GeoTiff raster files. I would like to have my script ignore shapefiles if they do not intersect with the ...
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2answers
2k views

Reduce the resolution of a shapefile in R (or QGIS if necessary)

I'm using shapefiles of history U.S. state boundaries from NHGIS to make maps in R. These shapefiles are much higher resolution than I need when making maps at the scale of the country: over 2 million ...