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.
4
votes
2answers
771 views
create temporary point geometry feature from coordinates in OGR with Python
I have two shapefiles containing two types of geometry features: one contains polygons and the other linestrings.
Because I'd like to use the Within method to check whether the end(or start) of a ...
4
votes
1answer
1k views
Mapnik Style Filter on River/Lakes Shapefile attributes (from Natural Earth Data)
As a followup to this question, I downloaded the vector data here:
http://www.naturalearthdata.com/downloads/10m-physical-vectors/
and I successfully created the rasterized water/land mask I ...
4
votes
2answers
224 views
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-- ...
4
votes
1answer
150 views
Revealing the different layers of a shape file in QGIS
Shapefile I am referring to is 'NUTS_RG_03M_2010' which is together with several other Shapefiles available in a ZIP file on the Eurostat web site.
the ZIP file
the available map sets at Eurostat
I ...
4
votes
2answers
189 views
How do I Capture GDAL projection and create matching output (OGR or GDAL) shape files?
Working in C++, using GDAL and OGR: Depending on what the user has supplied for image input, I need to output point (or other) shape files in the same projection as the input raster images. The ...
4
votes
1answer
908 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 ...
4
votes
1answer
471 views
Write out a WKT file from a loaded shapefile
We are looking to load and display a shapefile, simple polygons, then write out a WKT string of that shapefile and have the user save it somewhere.
Does anyone have some code snippets of that very ...
4
votes
1answer
364 views
Postal areas for Germany? - Shape?
does anyone of you know how and where I can download postal area districts of Germany in shape files (download free of charge if possible).
best regards
desputin
4
votes
1answer
331 views
Calculation of average point distances from one another within a polygon grid
I am working with processed LiDAR data of forested areas in ArcMap 10, with various area based statistics extracted for each 30x30m polygon grid-cell in a shapefile. There are approximately 20,000 of ...
4
votes
1answer
1k views
How to plot points on maps using ggplot2 and R?
Thanks for help me in GIS 101 Problem #1, now I have geocoded a few hospital in Connecticut using google map, I have able to visualize them in QGIS, now I am trying to do it in R.
ct <- ...
4
votes
2answers
168 views
Append Point Shapefile Location by GPS'd text file
In my industry it is common to create preliminary design maps for point locations that have a unique identifier. Upon the actual construction on the design, points change location based on ...
4
votes
1answer
92 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 ...
4
votes
2answers
202 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;
...
4
votes
1answer
65 views
Creating a feature of a part of a state boundary from a 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 ...
4
votes
2answers
565 views
Dividing Earth into continent polygons
Is there a simple (low res is fine) polygonal data set that divides the entirety of Earth's surface into continents, with no overlap and no area excluded?
Specifically: North America, South America, ...
4
votes
1answer
132 views
Arcmap: subset A.shp based on B.shp, then partially update B.shp
Okay, so I have 2 shapefiles:
US states outline file (very coarse/simple outlines)
Global Self-consistent Hierarchical High-resolution Shorelines, Level F
(much finer spatial resolution)
I am ...
4
votes
2answers
607 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 ...
4
votes
2answers
413 views
Extract all pixels of given RGB value and render as MultiPolygons
Given a geotiff image with a colortable in it, what is the easiest way to extract each color as its own "layer or shapefile or multipolygon object"?
Specifically, I am looking for a programmatic ...
4
votes
1answer
2k views
How to use QGIS to fix an invalid geometry without it telling me I'm not allowed?
I have a shapefile, and it's got a self-intersecting geometry in it. I'd like to fix the self-intersection, but it will require a few moves. When I attempt to move a point using the QGIS edit tools, I ...
4
votes
1answer
70 views
How to determine correlation between two databases?
I need to perform some tests and verifications on databases and/or datasets.
I need for example to analyze two databases and then determine if there is enough correlation between both.
My main issue ...
4
votes
1answer
163 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 ...
4
votes
1answer
441 views
How to use DotSpatial to project/reproject shapefiles on the fly
I would like to use DotSpatial to reproject shapefiles on the fly before loading them to GeoServer. I've been looking for tutorials on how to get started with this in vain. Any pointers on where I can ...
4
votes
2answers
200 views
Display of zoomable image thumbnails instead of symbols on maps
sincere congratulations on your ingenous QGIS and the many extremely useful extensions. In my research on African archaeology I work a lot with geotagged pictures (drawings; photos; plates etc.) which ...
4
votes
1answer
1k views
Spatial distance join between polygon and points using R?
I'm figuring out how to do a Intersection (Spatial Join) between point and polygons from shapefiles. My idea is to get the closest points and those points that match completely inside the polygons. In ...
4
votes
3answers
696 views
Looking for a way to change the default shape file label in ArcGIS 10
Is there a way to change ArcGIS's default shapefile label Font: Aerial Size: 8 to something we are using over and over again? As shown in attached screen shot, i'd like to include a label expression ...
4
votes
0answers
49 views
Can I edit shapefile while using a definition query in QGIS?
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!
4
votes
0answers
103 views
How to get exact featureinfo in wms layer Geoserver [closed]
I got neighbor polygon feature info instated of clicked polygon feature info.
In My Code:
getfeaturenfo :function(e) {
coordinates=e;
var params = {
...
4
votes
2answers
140 views
How can I export data from a feature layer in ArcGis Server?
I'm using a public ArcGis server with some data I would like to export to shape or some other format. I know I can make a program (I'm a developer) that could query the server for all the features on ...
4
votes
0answers
94 views
Problem opening a shp in another application
I helped a colleague converting waypoints from a gpx file to a shape file. My colleague has only arcMap. I gave him the shp and when he opened it in ArcMap, it did not show anything in the attribute ...
4
votes
2answers
207 views
ArcGIS: Rapid digitizing of Point Data
I have several big maps with a lot of points that I have to digitize. All these Points have different Values (depth in Meter, double) and will be stored in 1 Shapefile.
Is there a way to speed up my ...
4
votes
0answers
684 views
Union, Dissolve, Buffer — multiple layers, all in one step?
I'm a new user of Quantum GIS (1.7.3) and I need to repeat a task multiple times, so I'm wondering if there is a quicker way to do the following (with three or more polygon layers - each layer has a ...
4
votes
0answers
483 views
How to create a routable road network from Ordnance Survey data?
I've been following the "Beginners Guide to pgRouting" in an attempt to create an in-house application that provides drive-time isochrones.
I have a server, postgreSQL and PostGIS and pgRouting - no ...
3
votes
4answers
3k views
Change order of features in a shapefile
I have a shapefile and I want to change the order of the features.
Is that possible using ArcMap?
Thank you!
3
votes
5answers
1k views
Simplify shapefile parcel layer
I have a very large shapefile with over a million parcels within it.
The problem I am having is that the polygons representing each parcel are very jagged.
What I am looking for is a simple and fast ...
3
votes
7answers
8k views
Having problems with joining an excel table to a shapefile in ArcMap
I have a shapefile of lower layer super output areas (LSOA) for England and Wales and I have a spreadsheet of the indices of deprivation for each of the LSOA's in England. I want to join the ...
3
votes
2answers
126 views
How can I keep the color of the shape file in arc constantly?
I am using arc gis 9.3 when I use a color for the shape file it changes everytime when I close and open the arc map so how I can constantly keep the color of the shape file that I work with
3
votes
2answers
631 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
3answers
127 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
3answers
123 views
In an ESRI Shapefile, what is the “Record Number” field of each record header in the .shp file?
The shapefile specification (http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf) only says "Record numbers begin at 1." (page 5), which doesn't specify what the field actually is. As per page ...
3
votes
3answers
2k views
Shape file for North America
list!
Could you please help me. I need the coastline shape file of North America, something like this
http://www.diva-gis.org/gdata
I used it for geoserver+postgis with osm sld-tyles like the ...
3
votes
5answers
1k views
Export shp spatial data to Corel
Hi
I need an printable administration map of a country. I would like to use it in Corel Draw for some colour manipulations and poster printing.
I have found the map on http://www.diva-gis.org/ but it ...
3
votes
2answers
67 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). ...
3
votes
2answers
520 views
Kicking someone off a shapefile in ArcMap
I have ArcMap open, and someone else has the same shapefile open as me. How can I kick them off so that I can edit? I get the following error message:
"Unable to save edits, cannot acquire a lock"
3
votes
3answers
13k views
How to open the Shape files and extract the data from these files?
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) . We do not know how to ...
3
votes
1answer
202 views
How to convert jpg file to shapefile?
I am developing a GIS application like this:
By now my steps are:
I have got a jpg file, 5040 x 8179 dimension. In this map, the roads, rivers, towns etc. are marked.
I am using .Net to develop ...
3
votes
1answer
771 views
Georeferencing a shapefile with ArcGIS 10.1
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 ...
3
votes
1answer
867 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 ...
3
votes
3answers
194 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.
...
3
votes
1answer
379 views
How to save a newly created shapefile in PostGIS?
I am creating shapefile using shapefile.py and my database has records more that 65k which is the limit of the shapefile. How can I create shapefiles then?
Is it possible that somehow I am able to ...
3
votes
2answers
580 views
Simplify Shapefile
I have a shapefile that contains neighborhood boundaries that I want to simplify. Right now I am thinking of converting the shapefile to Google maps KML so I can insert the boundaries into the map as ...
