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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1answer
2k views

How to overlay a Shapefile on a WMS layer using Geotools?

I am trying to overlay a shp file on wms layer using the example http://docs.geotools.org/latest/userguide/tutorial/raster/image.html. Each time I want to read the format of the file to get a reader ...
2
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0answers
267 views

KML files to IPad securely? Altitude and shape problems in Google Earth

Does anyone know any options for maintaining privacy of the files and getting them onto iPad using Google Earth? Using Google account to link to Google Earth, privacy settings in Google my maps are ...
3
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1answer
512 views

OSS java approach to convert Shapefile to GML

We've got a project coming up where we need to upload .zip of a shapefile, join the .dbf to some lookup tables, join to other tables also uploaded (one to many attributes for each feature), and ...
6
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1answer
809 views

How to connect places (points) without crossing lines?

I have two sets of data. One with placemarks represented by blue dots in image below, and another set of geographic data with lines represented by grey lines. 1) For the first point in drawing, I'm ...
8
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4answers
7k 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 ...
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1answer
1k views

How can I export a shapefile to netCDF?

I have a shapefile of the worlds biomes Terrestrial Ecoregional Boundaries Shapefile (TNC), 12/14/09, 50MB download from available from http://conserveonline.org/workspaces/ecoregional.shapefile ...
5
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1answer
2k views

OGR Shapefile to CSV: Using Python to get WKT for multipart Polys.

Using ogr2ogr and python, I'm running into a wall with trying to create a csv with WKTs for a shapefile that contains multipart polygons. Currently this is this code I'm using (found it on interweb): ...
8
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4answers
739 views

What are some alternative sources for USGS data?

I've been using the USGS National Map viewer (http://viewer.nationalmap.gov/viewer/) for getting data for QGIS, but the download system is driving me insane. I enter my email address and [sometimes] ...
16
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6answers
7k views

How to improve rendering performance of very large shapefile?

I have a polygon shapefile that has a 100MB .dbf and 500MB .shp file component. The reason it is so large is it is a landbase classification for a whole district. Everytime I am viewing the file in ...
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3answers
989 views

Merge Zip Codes to Create new sales Markets

Let me preface this question by saying I am very novice with respect to GIS. With this in mind, I am looking to merge zip codes into sales territories. Instead of plotting data by zip code, I want to ...
5
votes
2answers
1k 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 ...
2
votes
1answer
444 views

Edit Shapefiles Attribute data in GeoServer Programatically

I'm rendering a shapefile using GeoServer and using OpenLayers library to render it in the web browser. Now I have created the option of editing the attribute data in web browser. I want the edited ...
3
votes
1answer
3k views

How to export shp to kml?

I already browsed your FAQs, and could not come up with a good answer, I am trying to export shp files to kml to be placed on Google Earth. On a previous version of QGIS it was as simple as right ...
0
votes
1answer
321 views

Does a polygon in a layer intersect with another polygon in the same layer [closed]

I am a CS major with little experience in GIS. I am working on vector polygon overlay. Looking at GML and shapefile data, I realized that a map is made up of a large number of polygons. Does a polygon ...
12
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2answers
27k views

How to crop Shapefiles in QGIS?

I need to clip a large and very detailed .shp file in QGIS showing environmental data similar to a temperature map. Is there something like the very simple crop tool alike in photoshop where you can ...
2
votes
1answer
644 views

Is it possible to have self intersecting polygons in shapefile?

GIS vector data for example shapefile contains polygonal data. Lets assume, we have polygon A which has self-intersection which means that the edges in this polygon intersect with each other. Lets ...
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 ...
9
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1answer
4k views

How can I use fortify() to create a filtered R data frame from a shape file?

I am in the process of building a ggplot choropleth map of population in administrative areas in Wales. I have downloaded the Boundary-Line data from the Ordnance Survey and extracted what seems to be ...
1
vote
1answer
213 views

Best practice for loading shapefiles into ArcSDE geodatabase using web application

We are developing a web GIS using Flexviewer and we want to allow users to upload a shp file and insert it into a ArcSDE geodatabase. I think there are two steps at least. upload the shp file (zip) ...
10
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2answers
327 views

Determine minimum number of polygons from shapefile to cover an area of interest

I have a large number shapefiles representing areas of interest for an analysis that will be conducted using various sources of satellite imagery (IKONOS, RapidEye, etc.). Unfortunately, the imagery ...
3
votes
2answers
2k views

From text data create a FeatureClass with table with python

I'm searching how the output of one program (text file with some writings, but also with data as numbers, dates, times, coordinates, all separated with commas) can be transformed to a Feature Dataset. ...
3
votes
3answers
730 views

Shapefile import with Oracle + GeoServer produces points instead of vector shapes

I have implemented the example at http://www.gistutor.com/openlayers/22-advanced-openlayers-tutorials/47-openlayers-wfs-t-using-a-geoserver-hosted-postgis-layer.html and got it working properly. Now ...
11
votes
1answer
7k views

Use python to add layers to TOC

I've been battling with adding layers to the TOC for some time now. I have managed to single layers added but need to loop through a folder and add all layers. Shapefiles I cannot get to add at all. ...
9
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2answers
7k views

Using the python shape library: pyshp - how to convert .csv file to .shp

I am trying to understand how I can use the csv module in python to open a csv file in the same folder as the python script, and then create a shapefile using the shapefile module pyshp. The csv file ...
7
votes
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. ...
2
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0answers
478 views

create geotiff from shapefiles

I need to colorized geometries from shapefiles and convert them to raster image (geotiff). I tried to use geotools's VectorToRasterProcess and ImageWorker ("d:\gis\tmp\32 27 25 w4.shp" is path to my ...
6
votes
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 ...
1
vote
1answer
217 views

Unable to load the GADM data in QGIS

I have downloaded the shapefile of Mexico's Admin Boundaries from the GADM site but I am not able to load it in QGIS. It keeps giving me the following error, ...
4
votes
1answer
1k views

Using PHP and JavaScript to dynamically create shapefile or KML

While I have used GIS software (ArcGIS and just started playing with QGIS at home), I have never looked into the code or file structure of shapefiles. I am working on a project for my work, a ...
4
votes
2answers
630 views

Is there a recipe for large shape files to be used in an Android App?

I am very new to GIS and I am diving into cartography and mapping because of an Android App that I am currently developing. I want to display environmental data, more precisely noise pollution data on ...
1
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1answer
2k views

Drawing a Straight Line Between Two Polygons on a Map and Listing Which Polygons It Passes Through

I have a shapefile of United States counties. I have two counties that I would like to highlight. I would like to draw a straight line distance between them. By straight line, I mean, if you were ...
5
votes
4answers
332 views

We sent Client Esri Files and Now they want to See Polygons

We are a voter list company. Every ten years new political boundaries are written for federal and state offices. All of the corresponding shape files are ESRI ready. One of our clients is getting ...
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vote
2answers
506 views

How to use -where SQL in an ogr2ogr loop in GDAL/OGR (bash)?

I'm using the following code: while read line; do for att in $line; do ogr2ogr -where "newcode='$att'" -f "ESRI Shapefile" $OUTPUT/$att.shp $INDATA done done < $SCRIPT/newcodes.txt The text file ...
4
votes
3answers
2k 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. ...
0
votes
1answer
258 views

overlay a county shapefiles for 2 different years [duplicate]

Possible Duplicate: overlay county shapefiles for 2 different years 2 down vote favorite I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay ...
5
votes
1answer
201 views

Creating feature from part of state boundary in shapefile of U.S. states?

I have a shapefile of U.S. states. I want to create a feature layer from it so that I can do a Near analysis with it. Suppose that I am interested in the Georgia boundary, but only the part of ...
3
votes
2answers
359 views

calculate coastline at risk

I have an idea of what I want to do but I don't know yet what tools will bring me there. I have administrative boundaries in one layer and coastline in another layer. The coastline is categorized in ...
3
votes
2answers
4k views

How to edit Shapefile Attributes?

How might I go about exporting a polygon shapefile (e.g. CSV) so that attributes (not geometry) are editable by others, and importing it with the changed attributes (of which there are several columns ...
3
votes
1answer
980 views

Can't get MapServer WFS to display in OpenLayers

I'm new to OpenLayers and MapServer and I'm trying to serve a shapefile through a WFS but can't seem to get the data to display. When I use Firebug and HttpFox in Firefox I seem to be getting some ...
2
votes
3answers
3k views

How to export a shapefile through the Wikimapia API?

I am trying to download a kml file from Wikimapia containing information on quaters (districts), the very same information that is nicely available on Wikimapia. What I want to get at the end of the ...
7
votes
4answers
1k views

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 ...
6
votes
1answer
242 views

Is there a difference between projecting shapefiles then rasterizing & rasterizing shapefiles then projecting?

I currently have a project where I rasterize shapefiles into simple presence/absence (1 & 0) rasters and then add each one to a running total to create a total richness raster at the end. The ...
4
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2answers
3k views

merge shapefile using ogr2ogr and retrieve the attribute of both

Ciao, I have two shape files that I want merge (overlay/intersect) having in the destination the attributes of the two sources file. ogr2ogr file_merged.shp tl_2010_us_uac10_conus_albersUA.shp ...
5
votes
1answer
2k views

How to programatically populate a shapefile field with polygon areas in OGR?

I'm trying to programatically populate a shp field with polygon areas: import sys import ogr ds = ogr.Open( 'tttttttttt.shp', update = 1 ) if ds is None: print "Open failed./n" sys.exit( 1 ...
3
votes
1answer
60 views

Is it possible to display filtered results on OpenStreetMap?

is it possible to goto www.openstreetmap.org and do a search for a place like Auckland (New Zealand) or Melbourne (Australia) -but- only show Cities or Neighbourhoods or Suburbs? I understand that ...
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3answers
2k views

Where can I find shapefiles for New Zealand Cities and Suburbs/Neighbourhoods?

I'm trying to find some shapefiles (administrative boundaries) of New Zealand CITIES and SUBURBS/NEIGHBOURHOODS. I've found some boundaries for the Country, Regions, Districts (not useful for me) .. ...
7
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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 ...
1
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1answer
903 views

Converting a shp file to a list of latitudes and longitudes

I have a shp file with the latitudes and longitudes for the boundaries for various geographic regions. I'd like to convert the shp file into lists of just latitudes and longitudes for the regions. ...
3
votes
2answers
936 views

World map shapefile including disputed areas

I am looking for a global shapefile that allows you do show data for all disputed areas (like Waziristan, Spratlay Islands, Kahsmir, etc.). Do you have any idea where I can find a shapefile with not ...
2
votes
0answers
539 views

QGIS: opening a shapefile without an exclusive file lock [closed]

UPDATE: I did some analysis of what happens with the locking and it looks like QGIS doesn't use an exclusive lock. It just requires (non-exclusive?) write lock to the file. So this C# code fails: ...