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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12
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4answers
3k views

How to reproject spatial data using free libraries?

How can I use free libraries to transform spatial data? For example, I want to change the projection of a Shapefile within the code of my C# web application. How do I do that?
11
votes
4answers
51k views

Opening and extracting data from Shapefiles?

We are in need of US highway data. We found it for Florida at the state GIS website. We downloaded the data for Florida highway intersections from here (this is a zip file). How do we use these ...
7
votes
5answers
524 views

From .shp to .kml to .shp Without Losing Attributes

I've converted a shapefile with attributes to a .kml for a client. The .kml and attributes were then edited within google earth. I received the updated .kml and now I need to get it back to .shp. ...
7
votes
8answers
13k views

How to display ESRI shapefile in Android [closed]

It's the first time I work with Android and ESRI shapefile. I tried to find but could not find any tutorials to display ESRI shapefile in Android. Somebody can help me about this??? Thank you so so ...
3
votes
2answers
1k views

How to find out the co-ordinate system using .prj file

I'm very new to GIS concepts. Is there a way or procedure of finding out whether the co-ordinate system is in UTM, latitude/longitude or in stateplane using .prj file? My .prj file contains the ...
14
votes
5answers
2k views

Does Re-Projecting ShapeFile only update content of *.prj file?

if i wish to change the projection of some shapefiles from .. lets say NAD83 (4269) to WGS84 (4326) ... and by using some 3rd party app .... does this mean the .prj file is only updated .. and not the ...
10
votes
2answers
4k views

Point (of a linestring) within Polygon using ogr and Python

I'm currently working on a project in which I need to build a topological network out of the geometry features I find in shapefiles. So far using Ben Reilly's open source project I've managed to ...
6
votes
1answer
654 views

overlay county shapefiles for 2 different years

I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay these two files so that they do the union and indicate the percentage of the land in 1880 that went ...
4
votes
1answer
1k views

How to find the distance to the nearest coastline from a land-based latitude/longitude point?

I'm completely new to GIS and unsure what I need to solve this problem: In the image above turquoise is actually land. Sea is white. I tried using the NASA Distance to the Nearest Coast data dump ...
3
votes
1answer
5k views

How to generate a Shape File in DotSpatial

I have a .csv file of coordinates such as the following: -90.19, 38.62, St Louis -122.42, 37.82, San Francisco -74.04, 40.68, New York I want to create a shape file using DotSpatial that has these ...
1
vote
8answers
8k views

Finding shapefiles of pipeline data?

Does anyone know where I can get or find shapefiles for pipelines (USA location)? Preferably free as I've never done pipelines before and I'm meeting a client next week that is doing pipeline work. ...
1
vote
1answer
4k views

Looking for vector data for the country Turkey

specifically roads, railroads, and rivers shape files.... no cost would be nice, but it needs to be more detailed and accurate than mapcruzin's free data. Something under $500 would also be ...
10
votes
3answers
11k views

How can I get the proj4 string or EPSG code from a shapefile .prj file? [duplicate]

I have to work with a shapefile defined in an unusual projection, which my GIS software does not know about. How can I get the proj4 definition or the EPSG code for the projection?
10
votes
2answers
2k views

Shapefile to SVG with ArcMap (while retaining country attributes)

Does anybody know how to export the Natural Earth 1:110m shapefile to SVG with ArcMap while retaining the country attributes? From SVG I'm gonna try to convert it again over to RaphaelJS to achieve ...
9
votes
2answers
3k views

How to split non-contiguous feature in QGIS?

I have a shapefile with a feature that is non-contiguous. I want to split the areas on the left from the area on the right. However, QGIS's Split Features tool requires you to draw a line over the ...
6
votes
5answers
4k views

How to add a projection to a Shapefile using open-source tools?

I have been given some shapefiles WITHOUT a projection. So I need to add the projection in order to display it on google map. I found the projection information I need at ...
6
votes
3answers
1k views

How to convert factfinder2.census.gov map data to KML?

I've downloaded a map from http://factfinder2.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=DEC_10_SF1_P1 (limited to San Francisco census tracts), and I'd like to convert it to KML ...
5
votes
1answer
7k views

How to re-project shapefiles?

I wanted to re-project a QGIS project, but there is no such option. When searching for an answer I see ogr2ogr suggested for this task, by re-projecting each vector layer (shapefile in this example). ...
4
votes
1answer
2k views

Is there a QGIS bezier curve tool?

I'm a recent convert to QGIS but have been confused about the lack of support for drawing curved shapefiles, especially when Arc has almost too many. A lot of the work that our consultancy do is based ...
4
votes
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 ...
4
votes
3answers
1k views

Convert KML to shapefile without losing attribute data

So I want to convert KML files to SHP shapefiles to load it onto PostGIS. Currently I'm using ogr2ogr to do the conversion for me, but it wipes out all the attribute data. How do i preserve this ...
4
votes
4answers
8k views

Tool for converting .shp file to .tab file?

I am searching for any free tool which can convert ShapeFile (.shp) to MapInfo (.tab) file.
3
votes
1answer
165 views

Exporting Shapefile to SVG using Java & GeoTools?

I am currently working on how to read in ESRI shapefiles, parse/edit layers and then export out to SVG (Scalable Vector Graphic) file type. I have been using GeoTools primarily for reading/loading ...
3
votes
1answer
514 views

remove land area from marine region polygons

In my pursuit to merge multiple polygons for the purpose of calculating the surface area of marine species distributions, using shapefiles from Marineregions, I am now trying to remove potential land ...
3
votes
2answers
442 views

Extract PostGIS line features to GPX

I have a request to provide GPX files of certain trails (around 100) that are present in OpenStreetMap. Given a local PostGIS install with OSM data, I think the process would be something like: ...
3
votes
3answers
2k 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 ...
3
votes
2answers
7k views

How to convert a shapefile to WKT?

I'm trying to convert a shapefile into the simple Well Known Text (WKT) format in the example below (from http://en.wikipedia.org/wiki/Well-known_text). MULTIPOLYGON (((40 40, 20 45, 45 30, 40 40)), ...
3
votes
4answers
2k views

Converting Esri ASCII raster to Shapefile for CartoDB?

I have an ArcGIS grid ascii file (Ramankutty Cropland at 5 minute resolution) that begins as follows: ncols 4320 nrows 2160 xllcorner -180 yllcorner -90 cellsize ...
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 ...
2
votes
1answer
288 views

Why is shapefile not drawing in expected location after (or before) using Define Projection tool? [duplicate]

I have downloaded this zipped shapefile of bus routes from the City of Houston data portal. I then performed these steps in ArcGIS Desktop 9.3.1: Extracted the shapefile from the *.zip Added this ...
2
votes
3answers
2k views

QGIS - Convert Vector points to GPS waypoints and route

I'm new here. I have a shape file with a series of points (around 300) using British National Grid. I need to put them on my Garmin Etrex 10 as waypoints. Can someone tell me how to convert this ...
2
votes
2answers
3k views

Looping through list of shapefiles to rename them using ArcPy?

I am trying to upgrade a simple script to list all shapefiles in a folder and if necessary in any folders within and then loop through the list of shapefiles and rename them. import arcpy # Set ...
2
votes
2answers
1k views

Unable to create shapefile using shapefile.py

I am trying to create shapefile from csv data using shapefile.py but i am constantly getting this error, Traceback (most recent call last): File "createShp_Davis.py", line 31, in <module> ...
1
vote
1answer
73 views

Erase shapfile (polygon) area from GeoTIFF

I've been reading several posts to do so and one option would be to use gdalwarp -cutline, but I would need to keep what it is NOT inside the polygon area. GDAL or any command-line tool does that? ...
1
vote
2answers
2k views

Convert shapely polygon coordinates

I am trying to work with a shapefile using shapely, fiona and python. The original coordinate system is in latitude and longitude that I am trying to convert to state plane system. So I want an ...
1
vote
1answer
367 views

MapServer (MS4W) test page from shapefile shows only blank white square?

I am trying to create a test page with mapserver and shapefile. At the moment I just want to get the map shown on my test page. I have gotten the EXTENT coordinates by opening shapefiles with QGIS - I ...
0
votes
3answers
610 views

Import shapefiles on my postgis table using R

Using R, I would like to import shapefiles that are in a directory on a geometric table i have on postgresql / postgis. What is the instruction that allows me to do it? EDIT: here is my code to ...
9
votes
1answer
14k views

Georeferencing shapefile using ArcGIS for Desktop?

I have a shapefile with some polygons that I would like to superimpose to a raster image, but unfortunately they don't match perfectly due to the reference system the shp has been created with. So, I ...
7
votes
1answer
433 views

Python3 libraries for GIS analysis

I am trying to do some spatial data analysis in Python 3 now, and I was wondering what the best libraries are for GIS in Python 3. The Fiona library was developed with Python 3.3 but the Python 3+ ...
7
votes
1answer
2k views

Updating Lat/Longs and actual position of point shapefile using arcpy.UpdateCursor()?

I have a point shapefile with over 3000 points that are updated frequently, when they are updated they need to have their lat/longs changed which is entered into the attribute table. When the ...
6
votes
2answers
2k 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 ...
5
votes
2answers
697 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 ...
5
votes
3answers
1k views

Best choice for building static maps: PostGIS, SpatiaLite or Shapefile?

I usually build static topographic maps, which are mostly printed. I'm often using OSM and rasterfiles (mainly different DEMs). The areas I'm mapping seldom exceeds 20.000 km². I'm using exclusively ...
5
votes
1answer
6k views

Copy single feature into another feature class

I do a lot of editing, in this case areas. Sometimes I add an area to one shapefile, only to realise a bit later that it should have been in another. Is there an easy way of copying only that ...
5
votes
2answers
843 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 ...
4
votes
3answers
222 views

How to link data to a polygon ArcMap 10.3

I have a map with different polygons (118). Each of this polygons represent diferent vegetation types. For each of those polygons I have data of which species there is and how abundant they are (the ...
4
votes
3answers
4k views

How to generate a shapefile containing an UTM grid (graticule)?

I'm looking for a shapefile containing an 1000m or 2000m UTM grid ("graticule"). All I was about to find on the web is a 10000m UTM grid (here: http://en.giswiki.net/wiki/UTM) and I am aware that a ...
4
votes
1answer
943 views

Convert from shapefile to GPX with selected attributes

I have a points shapefile that originally came from a GPX file (imported using QGIS). The original GPX file contained waypoints only and has disappeared. The shapefile has many attributes, but only ...
3
votes
1answer
5k views

How to resize shapefile features proportionally in QGIS?

In Quantum GIS (1.8.0-Lisboa) on Windows (OSGeo4W Install), how exactly would you resize a feature proportionally. The only way I've found to do this is by hand using either the Freehand Editing ...
3
votes
4answers
5k views

How to convert SHP to GPX or to JSON?

I would like to convert the tree inventory shape files of London (Canada) into a GPX file and if possible into a JSON file. You can download the archive from their Open Data website. It contains the ...