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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2
votes
3answers
67 views

How to find all distinct values from a single column of an attribute table with GDAL (Python)?

I am working with GDAL and modify ESRI shapefiles with it. I am searching a possibility how to find all distince values from a single column of an attribute table with GDAL (Python). In SQL it would ...
-3
votes
1answer
104 views

Exporting file geodatabase (GDB) to Folder of shapefiles?

I have a geodatabase with several feature dataset and feature classes associated with it. I want to export each feature dataset as folder and feature classes associated with each feature dataset will ...
2
votes
0answers
56 views

Identifying certain polygon from overlapping set

To clean up a large shapefile, I am looking for a way to do the following: I have the ID of many polygons which need getting rid of stored in a list. These polygons are villages and a second ...
4
votes
2answers
165 views

How to save .shp to .csv so that the Name is in the first “column” of the .csv?

I am trying to convert a point shapefile to .csv with locations in QGIS. The problem I am having with the conversion is mainly that, in the resulting .csv file I would like to have the Name and then ...
5
votes
2answers
75 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 ...
1
vote
1answer
32 views

Problem with projection of Slovenian Shapefile in QGIS

I hope someone can help me for this: I'm doing my masters thesis in Slovenia (in the field of wildlife management), for this I got a Shapefile of slovenian data by the University. As a main layer, I ...
0
votes
2answers
47 views

Parse PHP/HTML to shapefile or similar

I've been experimenting with scraping spatial data from a web page (www.majidata.co.ke). I've managed to find the source of the vector data from within a webpage though and have saved a chunk as HTML ...
1
vote
0answers
47 views

Why does the postGIS file lose geometry?

I am loading shapefile data from a GPS into PostGIS via Leica ZenoOffice. This apparently imports fine with it's geometry in the attribute table. However, when I add a postGIS layer in QGIS the file ...
1
vote
0answers
26 views

Cannot produce pie chart in QGIS 2.2

I have a shapefile to which I joined two tables from a MySql database. I used one column of the first table to color the polygons in my shapefile which works fine. Three columns out of the second ...
1
vote
1answer
36 views

Using ArcGIS for Server and ArcSDE for importing shapefiles?

Is there a way to use ArcGIS Server web services to perform the task below? I have .NET ArcObjects code to import shapefiles to Spatial DB which works on ArcGIS for Desktop. This code used ArcSDE to ...
7
votes
1answer
86 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 ...
3
votes
3answers
131 views

Can a shapefile, or other file, be made from Excel without coordinates

I have two Excel spreadsheets I'd like to make into shapefiles, or some equivalent. I have access to ArcGIS at work and want to try using GRASS as well. I have seen the help on doing so, but only if I ...
1
vote
1answer
77 views

Export to SHP with ArcPy with query

I have a shapefile with table with area code (field areacode). How can I export with ArcPy each unique area code so I get a SHP file for each one? It takes too long to select the layer and query ...
1
vote
1answer
36 views

How can I clip multiple geotiff tiles with a shapefile without greatly increasing their size?

I'm using gdalwarp to clip a number of geotiffs (tiles of a larger map) to a polygon described by a shapefile (which is about the size of the overall map, i.e. much larger than individual tiles) ...
13
votes
4answers
612 views

What is the difference between Coverage, Shapefiles and Geodatabases in ArcGIS?

I was wondering about the difference in spatial data storage methodology used by Coverages, Shapefiles and Geodatabases in ArcGIS. Coverage was the initial format, followed by Shape Files and now ...
4
votes
3answers
126 views

Can you recycle shp and shx files in a shapefile vector grid where only dbf data changes?

I'm periodically getting data from an external partner that is bound to a very large vector grid in shapefile format. The grid itself sits at around 400~ megabytes, but the only data that ever changes ...
1
vote
0answers
32 views

Create Polygon with inner polygons from KML or Shapefiles?

I am creating a windows forms application and I want to create a polygon from a KML or Shapefile as a layer on top of a Google Satellite map. Today I am using GMap.NET that got an polygon object but ...
2
votes
1answer
48 views

shapefile to gmt format

I have an ESRI shapefile of the contours of my study area, and I want to convert it into a format that is acceptable by GMT, so I can make an elevation map of my study area. Is that even possible? ...
1
vote
2answers
88 views

Avoiding R for windows gui front-end has stopped working error?

I am trying to load huge number of points (shape file) in R. But when I load it, the program displays following error message and just stops. "R for Windows GUI front-end has stopped working" My OS ...
1
vote
0answers
79 views

Convert polygon data into extreme lon/lat coordinates using QGIS

I'm very new to QGIS. I have a shape file of census blocks and want to use the data to plot points within each boundary using Google Maps api. I figure the best way to do this is to find the extreme ...
0
votes
2answers
67 views

Shapefile to Network xml

I have a shapefile representing the US freight highway network available from Oak Ridge National Lab. I'm trying to prepare this as a .xml network for processing with MATSim. The output structure is ...
1
vote
2answers
79 views

Vertical lines in a polygon shapefile

I am working with a GIS problem using a single input of a polygon shapefile. Consider an irregular polygon. I want to draw vertical lines across the extent of the polygon at equal spacing. How I ...
2
votes
4answers
194 views

Polygon Shape Data for North America

Does anyone know where I can get data like this for north America (for use in SSRS). It does not have to be exploded. If I add Bing maps my 36 page PDF is 250MB when exported!
1
vote
1answer
27 views

32bit to 64bit topology errors

Can generating a shapefile from a pgdb cause topology errors due to floating point conversion? I am running into gaps in a line layer of really small distances (order of 10^-4; CRS EPSG:2227 usft). ...
2
votes
0answers
45 views

Exporting feature class from Geodatabase to shapefile, shortens/abbreviates field values in resultant file?

I'm exporting feature class (File Geodatabase) to shapefile, after exporting the field values in resultant shapefile is shortening, like if a field value is Andhra Pradesh then in Feature class ...
6
votes
3answers
198 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 ...
1
vote
1answer
93 views

ArcMap “Could not open the specified file”

Has anyone ever encountered this message? I am getting this when I try to open certain shapefiles. I am working on a problem that generates shapefiles from spreadsheets using ThinkGeo's .NET tools. ...
1
vote
0answers
17 views

Good KML conversion program [duplicate]

I recently used the GPSlogger app and created KML files from my routes. I haven't been able to successfully convert them to shape files. Does anyone know a good downloadable program that converts ...
2
votes
4answers
135 views

Shapefiles of Central America and Mexico coastlines?

Does anybody know/has a shapefile of Central America + Mexico (WSG84) (with no administrative boundaries) at a low resolution that could share with me? I'm looking for a very simple shapefile without ...
2
votes
0answers
44 views

CRS problem: not recognizing the CRS of shapefiles to be the same for all

I'm attempting to aggregate (average) the attributes a point layer to polygon attributes (i.e. block groups and counties) via a spatial join. Both the points and polygons are in the same projection - ...
3
votes
2answers
110 views

How to iterate through features in a shapefile using R?

I am interested in iterating through a point shapefile to perform tasks on a point by point basis using R. In Python, this can be accomplished using the following workflow: import arcpy shp = ...
2
votes
3answers
73 views

How can I convert a set of ShapeFiles to an OSM file?

How can I convert a set of ShapeFiles to an OSM file?
-2
votes
1answer
69 views

Converting GeoNames csv file to shapefile?

How can I convert a Geonames csv file (downloaded from http://download.geonames.org/export/dump/) to a ShapeFile?
3
votes
2answers
43 views

Counting number of points in particular polygon for list of individuals using R?

I have distribution points for a set of individuals and a file of polygons-with matching IDs. What I would like to do is to go through and for each individual find the total number of points and the ...
3
votes
1answer
98 views

Getting StatPlanet to work with custom shapefile and data?

I'm assigned to get StatPlanet Plus working with some 3rd-party data to display a thematic map, on a Mac. I have the custom regions and attribute data in a map.shp/dbf. And I've configured the ...
1
vote
1answer
37 views

correct projection of GADM data

I'm trying to use a map of Austrias districts from the GADM project. The Shapefile can be found here: AUT_adm.zip (All other formats provided by the project appear exectly equal.) The coordinate ...
1
vote
1answer
49 views

Bulk SHP/KML Processing Tools

I need to accomplish two things in bulk: Convert SHP to KML Modify the fill and outline color and opacity either of SHP or KML files What tools can you recommend for these two tasks? I've tried ...
4
votes
1answer
64 views

Convert ESRI Shapefile to Raster using R - biggest polygon area to raster cell value?

I want to create a raster from an ESRI shapefile. Multiple polygons may exist in one raster cell. If so, I want to assign the attribute variable which occupies the biggest area of the raster cell. ...
1
vote
1answer
40 views

Bringing information from one shapefile into another using ModelBuilder?

I’m trying to use the ModelBuilder to fasten up my work in ArcGis but I don’t know how far I can use it and what’s possible. Here is my problem: I want to analyse agriculture parcels regarding to the ...
2
votes
1answer
88 views

Creating perimeter around multiple polygons using ArcGIS for Desktop?

This may have a simple answer that I'm just missing. I have multiple polygons in one shapefile I would like to make a larger Polygon around all of them. Is there a tool that is able to do this? ...
2
votes
1answer
38 views

QGIS show gdal_polygonized file in EPSG:54004 instead of EPSG:3857

I am polygonizing a TIFF with the gdal_polygonize.py and the resulting Shape is shown in QGIS in the wrong projection - EPSG:54004 instead of EPSG:3857. I have a TIFF in EPSG:3857 and polygonize it ...
-2
votes
1answer
64 views

Sending Shapefile to SQL Server 2012?

How can I send a shapefile to an SQL Server table? I have searched and found a tool called ShapetoSQL but I am developing a c# Windows application so I am looking for an Open Source solution.
1
vote
1answer
171 views

How to open .shx files?

I want to see the contents of an .shx file to see how the index information is stored in these files so that I can get some help in writing my own shape files. Can any one guide me on how can I open ...
1
vote
1answer
24 views

How to use polyline Z in shapefiles?

I am researching about shapefiles. I am not able to understand the usage of polyline Z parameters. I have searched the internet but I didn't come across any example where this parameter is being ...
0
votes
0answers
46 views

Shapefile to Rectangle Overlay/Intersect Test?

I have a shapefile and a repository of images that have corner Lat/Long points. I want to search that images who overlaps/intersects to shapefile. Here is the scenario that I am doing, creating a ...
2
votes
1answer
38 views

Intersect shapefile with raster, then determine proportion of each raster value?

Using the arcpy module in Python, I want to find the proportion of each pixel value within the boundary of an overlaying polygon. (The polygon is in a shapefile.) For example, there are 10 possible ...
1
vote
1answer
65 views

ogr2ogr reprojection works on command line but shifts output when same command run from inside python?

Reprojection with ogr2ogr works fine on command line, but shifts the polygon to northeast when same command is run from inside python using os.system(...) Any ideas why this could be? I hard-coded ...
1
vote
0answers
70 views

Adding information from excel into ArcGIS [closed]

I am working in ArcGIS and have a excel sheet with data pertaining to properties. I want to add this data to a map in ArcGIS of which i have property boundaries as a shapefile? I have a common folio ...
1
vote
1answer
28 views

Filtering out a subpart of a polygon shape file

I have ArcGIS 10.1 for Desktop software. I am working with a polygon shape file (having n rows) in ArcMap. The project demands splitting this file into two polygon shape files having n1 and n2 rows ...
2
votes
1answer
73 views

Unicode Decode Error for shapefile in Python

I have Python script for converting shapefiles to Geojson. My code works well if I use some usa data, but when I want to use some other encoding, it gives me this error: Traceback (most recent ...