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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Calculating percent cover from shapefiles

I normally do not work with shapefiles, so I am a bit lost here. I have two shapefiles each with multiple objects. The first is a set of 32 polygons (each one is a plot). The second shapefile has ...
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2answers
708 views

Data security for GIS Data (shapefiles,AutoCAD files)

This is regarding security for GIS Data (in Esri & open source) (Esri shapefiles, AutoCAD files etc.) Does anyone know how to assign a password to or encrypt shapefiles OR CAD Data? I have found ...
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3answers
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Producing singlepart featureclass with unique IDs for each spatially non-connected polygon?

What is the best method to convert a singlepart shapefile (i.e. one record that contains several non-connected polygons) into a mutlipart shapefile? For clarification the original question asked how ...
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2answers
990 views

Python - Check for number of shapefiles in a directory

I want to test: to see whether or not ONE AND ONLY ONE shapefile (which will be based on a filename wildcard) exists in a directory. Add these shapefiles to a list Use this list variable as an ...
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7answers
27k views

Having problems with joining an excel table to a shapefile in ArcMap

I have a shapefile of lower layer super output areas (LSOA) for England and Wales and I have a spreadsheet of the indices of deprivation for each of the LSOA's in England. I want to join the ...
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1answer
678 views

Automating plan report generation using ArcGIS Desktop? [closed]

i have shapefile that contains a lot of parcels "parcel has like fields (n° parcelle,proprietaire, cin) see picture : and i want for all parcels to generate this plan : take a parcel and ...
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3answers
963 views

Can we merge shapefiles with different geometries (point and polygon) to get a single layer which shows both geometries?

I want to merge two shape files in which one is of point geometry type and other is polygon type in order to get a single layer containing both points and polygon in a single map.
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Export to a Shapefile and maintain Domain Coded Values

I maintain a complex parcel fabric that uses coded value domains for a few fields. These are short integer fields with values from 1 - 6. These values represent say 1:Integrated Registered Survey ...
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1answer
7k views

How to import shp2pgsql?

I want to import shape file into PostGIS. There is 1 database postgres in it but no table added yet. I am using this command: shp2pgsql -I -s 4326 districts.shp districts | psql -d postgres -U ...
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1answer
513 views

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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3answers
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FME: Join attributes in text file with attributes in SHAPE file

I have a SHAPE file with points and different attributes - one attribute MyID. I also have a plain text file with several attributes - each in a separated column: MyID MyValue 1 A 2 B 3 C ...
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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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5answers
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How can one execute an SQL script in field calculator in ArcGIS 10?

I am trying to transfer over row data from a table to columns in a shapefile table. There is a common "SA" variable between the two (i.e. the study area number) but there is more than one land use ...
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4answers
1k 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 ...
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2answers
746 views

Ortho Projection produces artifacts

I`m trying to create a sphere-like view using qgis and the "world from space"-projection http://spatialreference.org/ref/sr-org/6980/ (essentialy an ortho-projection). ArcGIS wraps the shapes ...
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4answers
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draw shp files or kml files on ipad?

I need to be able to draw a polygon in the field while the landowner is there to approve it. Is there an app that is easy to use so all of the field hands can operate it? I also need to be able to ...
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3answers
9k 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 ...
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3answers
925 views

Fastest way to merge a feature

I am writing a arc engine application that can take a shapefile, and merge a set of polygons together. Here is the code that I am using to merge the polygons: private static void ...
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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 ...
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2answers
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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
205 views

How to know if shapefile is georeferenced?

I have a shapefile which is located in province in indonesia. it contains many sub-province if i removed sub regions inside a shapefile, and it leaves a small region, and my question is that small ...
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4answers
9k views

Postcode Shape Files for the UK

I am trying to find the shape files for postcode sector and districts in the UK. Specifically inside London. I know I can go and pay for these but I only really need to use them once. I want to ...
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1answer
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Move .SHP from .MXD to gdb [duplicate]

Possible Duplicate: How to move SHP to gdb with ArcView license? Let's cut it short, I have numerous mxd with layer coming from .SHP and various servers WMS that I need to move to a gdb. ...
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3answers
740 views

Looking for a .NET Dijkstra component using Shapefile

I'm totally new to stackexchange and i'm in this beautiful informative place for one problem. I'm a .net programmer and i need to write a program that reads a shapefile and performs routing operation. ...
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3answers
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Python: Combine multiple Shapefiles

i have got a lot of Point-Shapefiles (r20010101.shp, r20010202.shp, r20020101.shp...). Each of them has the same amount of points at exactly the same location. In a column that is named after the Date ...
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2answers
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Converting feature class with domains to SHP file

I have a feature class which has coded value domain associated with it. The code and the description are different. For example, I have coded value domain for pipe diameter. For pipe diameter of 8" I ...
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818 views

Some objects missing after importing a .shp into PostGIS

I have a .shp file which I am trying to import into a PostGIS database using the "PostGis SHP and DBF Loader". This works smoothly but some (maybe 5%) of the records have an empty geometry field. (I ...
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2answers
318 views

Merge uniquely named point shapefiles in 50,000 different folders into a single layer

I have point shapefiles in 50,000 different folders (each shapefile file name is unique) - about 33,400 shapefiles (not all folders will have a point shapefile). I like to open the point shapefile in ...
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2answers
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Extract Raster from Raster using Polygon shapefile in R

I am new to R and using the raster package. I have a problem extracting polygons from an existing raster file. If I use extract(raster, poly_shape) function on the raster it always creates a list ...
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1answer
259 views

How to get maximum value where two shapefiles overlap using ArcGIS for Desktop 10.1?

I'm trying to merge 2 datasets (both shapefiles, but I can convert them to raster layers if necessary) where the values are compared, and whichever is higher becomes the new value for the layer. How ...
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2answers
849 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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1answer
273 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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525 views

Convert coordinates from readShapePoly in R to long-lat coordinates

I'm trying to find some centroids of a shapefile for Danish municipalities and afterwards find the driving time between them. I use R's readShapePoly function from maptools combined with the ...
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421 views

Locating shapefile of European railways for goods transportion?

We are trying to make a project about European goods trade so we need railway data in shapefile format. More specifically, we are trying to find the potential of mine products being exported from ...
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2answers
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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 ...
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2answers
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Why don't some layers line up afer converting Mapinfo TAB to Shapefile?

I have 6 MapInfo layers / TAB files which I need to convert to ESRI ShapeFiles, preferably using QGIS. When a colleague opens these in MapInfo 10, they all look fine and line up correctly. When I open ...
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5answers
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Why can't I export XY data to a shapefile?

I have added a table from Access to ArcMap, and then used 'Display XY data' to plot points. When I then try to export the Events to a shapefile I get an error message telling me: "Error exporting ...
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1answer
133 views

Tools for discovering spatial data defects

Spatial data often have defects that may include incomplete polygons, sleathers (non-uniform administrative boundaries), overlaps, having points that belong to more than one polygon, etc. I have a ...
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2answers
6k views

Arcpy - How do I specify the precision and scale of a new field?

I'm wanting to create a field with a maximum of 1 decimal place and then calculate a value into it: (I know that all my values are < 10) arcpy.AddField_management('C:/shapefile.shp', 'myField', ...
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2answers
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Shapefiles for U.S. Area Codes (NANP)

I have a bunch of telephone numbers (just the area codes), and I'd like to geolocate them and make a map, but I haven't had too much luck googling for shapefiles for Area Codes. Surely these are in ...
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1answer
2k views

Sea routes network dataset

I am now working on a system to perform routing on a network of shipping lanes. See this dataset that I have as the base: http://geocommons.com/maps/109850 I have postgres and pgrouting up and running ...
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2answers
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ogr2ogr kml to shp conversion created 184 shapefiles?! What am I missing?

I'm trying to convert this KML dataset of ice arenas to a shapefile using ogr2ogr (GDAL 1.8). After some initial troubleshooting to get the script running, it's creating 184 different shapefiles (736 ...
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1answer
2k 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 ...
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1answer
81 views

How to Specify FID column name in shp2pgsql

In ogr2ogr I can specify the name of FID column using the option -lco FID={columnname} when importing a spatial data in PostGIS database. I am using shp2pgsql in case of shapefile and cannot find a ...
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3answers
714 views

Adding a GIS feature to existing database entry with QGIS

I've built a database with postgreSQL with tables, which include geometry columns. When I add some data to my non-geometry columns, I can see them in QGIS when I connect to my database using postgis. ...
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1answer
139 views

Where do I append point values with pyshp?

I would like to generate a .shp with five points using shapefile available through pyshp. However, when I loop through my list I get only the last value. This makes sense as I did not append any of ...
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2answers
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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 ...
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2answers
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How to draw a point at an exact location with spplot?

I imported a Shapefile holding a quite detailed world map from: http://www.diva-gis.org library(sp) library(rgdal) world = readOGR('./countries_shp/', 'countries') Using R with the sp-Packages, ...
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1answer
3k views

Converting a CAD/DXF file to a SHP file

I need your ideas and suggestions about a problem.... I have a dxf file which was converted from a CAD file. I used QGIS to convert it to a shp file... This is when I realized that the text ...
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1answer
179 views

How display outlines in a Map, only from a scale, but the colored polygon in all scales?

I want to display a shape with UMN-Mapserver. It has different coloured polygons and also outlines. But I want to display the outlines only, from a specific scale. I could add MINSCALE 150000, but in ...