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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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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2k views

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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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
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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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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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3answers
789 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
895 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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2answers
560 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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185 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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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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679 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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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
1k views

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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2answers
769 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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173 views

Is there a standard for the specification of .prj files?

We use shape files for data exchange. I've looked at the .prj files: different programs produce different prj files. Is there a standard how the parameters must be specified in a prj file? AFAIK the ...
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251 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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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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215 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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1answer
3k views

How to programmatically add shapefile to data frame in Arcmap

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 ...
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782 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 ...
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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
7k views

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
131 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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1k views

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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3answers
8k 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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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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2answers
211 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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1answer
131 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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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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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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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
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 ...
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2answers
869 views

How does shp2pgsql define schema?

Can anyone explain how it is that the shp2pgsql loader for loading shapefiles into PostGIS goes about defining the schema for a table when importing a shapefile? To further explain, shapefiles are ...
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70 views

FME - Writing Large Shapefiles

I've got an FME Workbench (version 2015.0) which searches for shapefiles in a folder tree. The shapefiles are contours which are split into tiles for a particular area. The workbench is fairly ...
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3answers
204 views

Missing Scottish Administrative Data in OS Opendata sets

I'm not sure if this forum is really the correct place to ask, but impertinence would lead me to believe that there may be some one on here that may know the answer. I'm using the Ordnance Survey Open ...
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2answers
2k views

Split a shapefile into multiple shapefiles based on a particular Field [duplicate]

I have a shapefile where there are 3 fields OBJECTID, NAME , LOCALITY. I want to create new shapefile that contains the geometry, projection etc. of the parent shapefile and according to the locality; ...
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1answer
678 views

How to convert a line Shapefile into a CSV with nodes and links?

Is there a way to convert a linear shape file into a csv file of the following format: Node_1, Node_2, attribute_1, ...., attribute_x 1 2 "hello" 567845.334 I have looked at ...
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3answers
4k views

Add shapefile from a local file to a JS API map

Using ArcGIS.com's Map Viewer it's possible for the user to add a local shapefile to the map, using an Add Data approach. Is it possible to add this functionality to an ArcGIS Server map built on ...
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1answer
5k views

How to convert shapefile to SVG keeping internal data?

I am very new to GIS. I found a tutorial on how to make a choropleth using Python tools. I want to follow it but use my own data and map. However the tutorial uses a US map SVG file and I need to use ...
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1answer
251 views

Can I edit shapefile while using a definition query in QGIS? [duplicate]

Is it possible to edit shapes while using a "definition query" or "query builder" in QGIS? I'm trying to do this in the same way I used to in ArcGIS. Thanks!
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How to avoid creating corrupt Shapefiles during Editing?

I have one of my GIS technicians digitizing some lines in QGIS in shapefile format. I don't know how he did it (and neither does he), but somehow the shapefile became corrupt. It was creating random ...
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Fastest way to convert shapefile to postgis in java

I have been using geotools to read shapefiles and import them into postgis. Unfortunately, when large files are being imported, this leads to a massive lag time --8000% of shp2pgsql piped into pgsql-- ...
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503 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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2answers
1k 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 ...
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754 views

Importing attributes from Excel file into new Polygons

I have a constantly updated Excel file containing address information which I am currently copying into the attributes of new polygons which I am creating on a daily basis. I am currently doing this ...
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2answers
924 views

Loading data onto PostGIS using KML files with attibute data

So, I have a kml file which contains 317 data points (317 polygons and the respective 317 names). The kml file also contains attribute data which pops up in a bubble on Google earth with about 12 ...