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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4k views

How to compare differences in two shapefiles? [duplicate]

I am a new user to Arcmap 10. I've been trying to figure out how to compare two polygon shapefiles. I need to figure out what the difference is from 2007 - 2013 (increase/decrease) in a couple of ...
2
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3answers
167 views

Breaking a continuous contour shapefile into smaller parts?

I created this contour shapefile and I need to break it into smaller parts so its better to manage. I also have a line shapefile of where I want the breaks. Is there a way to intersect and break them? ...
1
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2answers
144 views

Why does my 113th Congress Shapefile match up with the wrong districts across the country?

I downloaded a Shapefile from the Census on the 113th congress broken down by district nationally: http://www2.census.gov/geo/tiger/TIGERrd13_st/nation/tl_rd13_us_cd113.zip Within the .dbf file, ...
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2answers
86 views

Python to get ids from shp dont return all records

I have some Python code to get the ids and georeference from a shapefile: canvas = qgis.utils.iface.mapCanvas() allLayers = canvas.layers() nos = QgsFeature() for i in allLayers: if ...
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1answer
518 views

How to truncate field names to 10 characters in model builder

Apologies that I have not posted an image of my model, I am away from my computer for a while but am trying to sort this out anyways. I have a number of different animal GPS location points, and a ...
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1answer
102 views

How to convert geometry of SHP to decimals

I try to create a line with two points. These points are obtained in a SHP layer. How can i convert that points to decimals? Thank you
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1answer
154 views

I want to change using C# the style of a set of shapefiles once I have uploaded them or while I am uploading them

I am using C# and the WebRequest class to create a worksapce and then another WebRequest to create a datastore and upload a folder full of shapefiles to a geoserver. However, I would also like to ...
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1answer
721 views

How to show .shp file on Mapview(ArcGIS Android SDK 2.0.0)

I'm using ArcGIS Android SDK for first time. I have worked on a sample project and am able to get a World map using this.. map = (MapView) findViewById(R.id.map); map.addLayer(new ...
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1answer
256 views

Is it possible to use UTF-8 characters for shapefile attributes?

I heard that according to a specification shapefile attributes stored in dbf-files cannot have UTF-8 as encoding. And then I found out that an additional file with the ending CPG can be used to define ...
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1answer
646 views

Display Shapefile on website (Java or PHP)

i have to write an application where similar to Google Maps where i have to display a shapefile in a web application. My available technologies are Java (frontend framework: Apache Wicket) or PHP. It ...
2
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1answer
238 views

If I've given two different layers the same CRS, why won't they overlay one another?

I have a "towns" and "state" shapefile for Massachusetts as two separate vector layers in QGIS. I've set the project coordinate system to WGS 84 at the bottom of the screen (next to the "coordinate" ...
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2answers
1k views

Built a query for polygon Shapefile in R

I use the package maptools to read in Shapefiles in R. I would like to know if there is a function that can built up a query/subset to select only some Polygons based on a specific attribute in the ...
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1answer
37 views

Opening specific area only

I have a Shp file loaded of a County boundary, but i would like to open another shp file but only show the lines etc within that area and automatically delete anything outside. Thank-you
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0answers
155 views

Grass won't import shapefiles

I have a problem involving the import vector data command, specifically importing shape files. I installed QGIS on a pc at work and there I could import shape files into GRASS GIS 6.4.3RC2 (which is ...
3
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1answer
133 views

File size limitation for shape file

I am going through File size limitation for shape file esri support article (this article applicable for ArcGIS 9.X version not for 10.X ) I know may be same article will applicable for 10.x version ...
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0answers
227 views

catchment delineation

I am trying to use qgis to delineate between three sub-sub-catchments. I have contour shape file of 20 meter height. Sub-catchment is about 12 square kilometers area but consist of three ...
2
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2answers
1k views

Where to download USGS DOQQ boundaries?

I downloaded a shapefile of USGS DOQQ boundaries a few years ago and cannot seem to find one now. The attached image shows an example of the shapefile I'm looking for (green polygons showing the ...
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6answers
1k views

“Oddities” in the Shapefile technical specification

I've been writing a shapefile parsing library, and have encountered a couple of design decisions in the specification that I don't immediately understand. I'm hoping there's a wizened old ESRI ...
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2answers
336 views

Splitting Shapefiles [duplicate]

I am trying to create a code that will accept the input of a shapefile, and separate each of its features into separate shapefiles into a specified directory location. Can anyone help ? I am trying to ...
3
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2answers
487 views

How to calculate the shared area between a raster and a shape file in ArcGIS 10?

I have a raster file with 5 classifications developed from habitat modelling algorithms. I'd like to know how much of 2 classes of the raster is covered by the network of protected areas (Shape file). ...
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2answers
1k views

How to Add Shapefile with Symbology from Layer File to ArcMap MXD using ArcPy/Python?

Say I have a Shapefile: C:\DATA\points.shp A layer file: C:\SYMBOLOGY\symbology.lyr And a map document: C:\MAPS\map.mxd How can I add points.shp to map.mxd with the properties of symbology.lyr ...
3
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3answers
1k views

Updating Attributes using Pyshp

Is it possible to update an attribute field in a shapefile using pyshp ? I went through their documentation and all they show is how to create new attribute rather than editing or updating an already ...
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1answer
948 views

How to create a 3D shapefile from a raster?

I´m trying to make a 3D shapefile from a raster feature but not working. Tried already to run the command in OSGeo4W but nothing happen. I'm using the Qgis 1.8.0 Lisboa. The purpose is to get a final ...
8
votes
4answers
1k views

Is there a mapping between OGR and python data types?

I'm writing a shapefile using OGR in python, creating fields on-the-fly from a python data source. Creation of a new field requires an OGR data type, is there a mapping between OGR and python data ...
2
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1answer
2k views

Find and replace unicode character in a shapefile

I've found several example of script and blog posts on working with unicode characters, but I haven't been able to make anything works so far... It's a little frustrating I have a shapefile encoded ...
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1answer
169 views

Problem with encoding of CSV and SHP files in Linux

I am new to using QGIS. I came up against the encoding issue of shp files. This solution to solved my problem in Windows (for source I had to put windows-1253 instead of utf-8) My question is what ...
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0answers
754 views

Problem reading attribute with Python using osgeo.ogr

I am working thru "Python Geospatial Programming" and I have a problem in a program in Chapter 6 that I cannot seem to solve. The small program: import osgeo.ogr shapefile = ...
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1answer
333 views

Incorrectly Projected PostGIS data in TileMill

When I bring PostGIS data in EPSG:900913 into TileMill, my layers end up on other continents. This is my workflow: (1) Save shapefiles in QGIS to EPSG:900913 (2) Import the shapefiles using PostGIS ...
3
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2answers
864 views

Csv to Shp conversion? [duplicate]

I am working on a really big script right now where I have a csv file that I have removed rows and columns from, and edited the headers. I need to create one big shapefile for the entire csv file then ...
2
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0answers
1k views

Adding shapefile causes ArcMap Drawing Errors (General function failure)

I am creating a map that is a hodgepodge of databases, stand alone shapefiles, and a couple image services. Everything seems to go as expected until I add a certain shapefile to the mix. Then all of ...
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3answers
218 views

Converting Categories to shapefiles [duplicate]

I have created 2 Categories in a feature using classification.Now how do I convert them into new shapefiles?
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0answers
1k views

Google Earth export from QGIS

I'm using Quantum GIS. Is there a way to export a shapefile to Google Earth format (*.kmz) using QGIS? Thanks.
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2answers
200 views

Is it possible to create CAD file from shapefile and also create CAD blocks from the database fields

I am trying to find out if there is any software or plugin/code that I can bundle that will take a shapefile and export it to a CAD file with CAD blocks generated so our CAD mappers can just move the ...
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1answer
162 views

Postgis invalid geometry from shape file

I'm having trouble converting a Feature class (shape file) to a DB table (Postgresql 8.4/Postgis 1.5). This is the command in the pg log: INSERT INTO "public"."distritos" ("Shape" , "DEPARTAMEN" , ...
3
votes
3answers
1k views

Where can I find a shapefile of all the Montreal Neighborhoods?

I am trying to map out Montreal and was wondering if there is already an existing polygon shapefile of all the neighborhoods. Here is a link to a perfect example of what I am looking for. ...
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1answer
4k views

How to convert AutoCAD file to Shapefile for map from ArcGIS API 3.2 for JavaScript?

I have an AutoCAD file that I want to convert to Shapfile to appear in a map by API for JavaScript in .net. What do I do?
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1answer
1k views

How to calculate polygon areas in acres or square miles instead of feet?

I have a layer in State Plane NAD83. When I use "Vector|Geometry Tools|Add/export geometry columns" or Field Calculator they both create the area in feet. What if I want acres or square miles? Thanks ...
0
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1answer
314 views

Is it possible to update layer source in qgis

I've loaded a few shape files as layers in qgis, and I'd like to make a duplicate of the project and all associated shape files into a single directory. However, all of the layer sources are still ...
2
votes
1answer
331 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") ...
2
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1answer
435 views

Force dimensionality with shp2pgsql

After invoking: shp2pgsql -W "latin1" theshape.shp > thesql.sql My console responds with: Shapefile type: PolygonZ Postgis type: MULTIPOLYGON[2] Note the shapefile type is PolygonZ. The result ...
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0answers
86 views

Mapping between two different agencies roadway shapefiles of Las Vegas in ArcGIS

I have two roadway shapefiles of Vegas. But they do not overlap. One of the file has a certain shift from its exact location. Can anyone help me how can I move the location so that they overlap ...
6
votes
2answers
1k views

GeoServer: Shapefile or PostGIS?

I'm going to build a web application, which will render around ten maps using GeoServer. I will be also changing the attribute data in the application for some layers. So, what is the recommended ...
2
votes
2answers
546 views

How to calculate area in sq km of an ellipsoid shapefile

In QGIS, I often find myself setting up projects with an ellipsoid coordinate system (e.g. WGS84) so that the resulting maps have lat lon scales, etc. Often in these projects I also need to do some ...
2
votes
2answers
959 views

GeoJSON to Shape file conversion with geotools

Can someone please provide me an example of how to convert GeoJSON to Shape file using geotools?
0
votes
1answer
132 views

Correlation and terrain databases [duplicate]

I would like to know what kind of computation I could perform on a terrain database. I'm making terrain for VBS2 from raw data (shp files and DTM Elevation files) and then I'd like to be able to check ...
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0answers
137 views

Join .csv file and .shp of georeferenced points

I have georeferenced a map and saved a selection of some points on the map. These points are cities of departure and arrival and I want to join the .shp with a and excel .csv with the information of ...
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1answer
746 views

Why does Add Field to Layer File give “ERROR 000840: The value is not a Feature Layer”?

I'm trying to add a field to a layer file, but it always gives an error. What I did was making a closest facility layer and save the result as a layer and after that I tried to add a field, but then ...
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0answers
152 views

How can I add data to a shp file attribute table from arcobjects?

I have a code that selects row data from a listview table in VB.net. I have declared that data as a variable and I can see it if I ask it to dispay a message box (see code below). Now I would like to ...
1
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1answer
487 views

Problem to clip a raster with a shapefile

I need to clip a rasterlayer with a vector layer. When I try this, the following error appears: **ERROR 1: Attempt to create 0x0 dataset is illegal,sizes must be larger than zero.** What am I ...
5
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1answer
953 views

Using ArcPy to batch merge based on shapefile name?

ArcGIS 10 SP4 Python 2.6.5 I have quite a few shapefiles that are in many different directories. I'd like to pull out groups of like shapefiles, merge them, and move the results into a FGDB. I've ...