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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How can I get a shapefile from a postgis query?
My data is in a PostGIS database. I would like to generate a shapefile from a query. How can I do that?
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3answers
4k views
How to create a shapefile in ArcGIS 10 using arcpy?
How can I create a shapefile using Python in ArcGIS 10?
I have lat & long. From this I need Python code which will create a shapefile and display it in ArcGIS 10.
Thanks.
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2answers
3k views
How to encode shapefiles from LATIN1 to UTF-8?
Is there a way to encode shapefiles from LATIN1 to UTF-8?
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4answers
846 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 ...
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3answers
3k views
How to get all the lat/long coords that define a shapefile
I have a Shapefile with several shapes inside it.
Using MapWindow I have been able to determine that the shape I need is the one with shapeId 19.
As you can probably tell I have very little ...
8
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2answers
133 views
Is there an automatic function in QGIS to package all shapefiles in a project for transferability?
In my project, I use a lot of geodata from different directories.
Now I want to give the QGIS project to a colleague (eg on a CD).
Is it possible to copy the shapes from different directories ...
8
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1answer
1k views
How to convert .shp into .gpx using QGIS?
I'm newbie using QGIS. I would like to convert .shp into .gpx. So, using Qgis, I open my shapefile and I tried to "save as" gpx but it gives an OGR error:
creation of field ObjectId failed (OGR ...
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2answers
3k views
Cutting up a shape file into smaller parts
I've downloaded the 350MB coastline shape file from Openstreetmap, but I really would like to work with a small part of them, is there a way to generate a shapefile of a small area.
I'm using MacOSX ...
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384 views
Which data format typically displays fastest? (ArcMap)
My organization is working on an application running on ArcGIS Engine. Previous versions of the application used primarily Shapefiles for displaying roads, parcels, buildings, etc. Since I was taught ...
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1answer
399 views
How to convert GDB data to shapefiles without ArcGIS?
We've got some data (supposedly it's a simple collection of points--or at least that is all we need to extract) from a 3rd party in a GDB folder (I don't know how to tell what version) but we don't ...
8
votes
4answers
285 views
How to create a multi-story building infrastructure web map?
Hi please bear in mind that I've got absolutely NO experience working with GIS before you begin laughing at this. During a recent meeting, our client was bouncing around their complaints about how ...
8
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4answers
641 views
Looking for USDA plant hardiness zone shape file
given that this is a USDA resource I really thought that it would be available online somewhere, but for the life of me I cannot find a shape file for the USDA plant hardiness zones anywhere. anyone ...
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2answers
3k views
ogr2ogr converting to shapefile - how to select feature types?
Shapefiles can only have one geometry type, but many other formats (kml, geojson) can have multiple types.
When converting to shapefiles, is it possible to to tell ogr2ogr to create multiple ...
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4answers
302 views
Identify corrupt shapefiles or rasters via Python or ArcObjects
I'm interested in a way to identify rasters (e.g., ESRI GRID format) or shapefiles that are corrupt that would prevent them from being used in an analysis tool. I have a large number in structured ...
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3answers
509 views
Alternatives to Shapefiles as open-source, cross platform dataset types
I am working on software that is very ESRI oriented, but a future version will likely not be using ESRI software. It uses Shapefiles and Geodatabases. I'm planning on getting all of my data to ...
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4answers
1k views
how can i convert a shapefile to lat and lon boundaries?
i have a shapefile of country subdivisions and i would like to extract an array of bounding lat and lon for each division.. is it possible to do?
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3answers
278 views
How to check if parcel is located by golf course
Is there any simple way for me to run millions of parcels through some type of script to see if a shape file parcel is on a golf course? For example if I have a layer that has all the golf courses and ...
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2answers
511 views
Control the colors of a shapefile
I have a Shapefile with road data. Sometimes the roads are blue, sometimes they are green. I didn't used to mind, but now I'm tiling everything so I need to control the colors.
I'm loading it with ...
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3answers
246 views
How to publish maps to web with no programming required?
I am new to GIS web development. I do not have any programming background and I want all the maps that I design in GIS (shapefiles, using ArcGIS 9.3) to be published on the web. Please tell me the ...
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2answers
3k views
Merge polygon in a shapefile based on a field value
Hello I have a shapefile with a lot of polygons in it. These polygons are grouped into a category: district. How can I merge the polygons based on the same name of the category within this shapefile?
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1answer
104 views
How to rename field names in a shapefile?
I need to rename the field names (attributes) in a shapefile. Is there an easy way to do this from the command line?
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3answers
1k views
How do you determine a shapefile's charset?
Is there a way to determine the charset used for a given shapefile?
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3answers
731 views
Polygon shapefile with null values
Does anyone know where I can find a sample shapefile that has null entries in it (preferably a polygon shapefile)? I'm not sure how to create one with null entries.
Thanks,
Jeff
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3answers
486 views
How to script shapefile editing with open source tools?
I would really like not to disturb anybody and find my answer by a Google search, but I don't really know where to start.
I have a .shp vector layer with several points on streets, each having a list ...
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5answers
4k views
update one shapefile attribute table with values from another dbf table
I try to explain here what I am trying to do:
I have one shapefile and one independent dbf table with the same fields. In the dbf table all the fields are populated but in the shapefile attribute ...
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1answer
1k views
Instantiating spatial polygon without using a shape file in R
So, the usual way we read a shapefile in R is via the maptools package, like this:
sfdata <- readShapeSpatial("/path/to/my/shapefile.shp", proj4string=CRS("+proj=longlat"))
However, I have a use ...
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1answer
199 views
Removing rows in shapefile in R
I've imported a shapefile into R, and joined it to a table. My shapefile contains all the census ids, while my table only contains selected census ids. I'm now trying delete all the rows didn't get a ...
7
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1answer
105 views
Reading shapefile tolerance in python
Is there a way to get the cluster or xytolerance from a shapefile into python using free/open source software?
I'm currently using the pyshp package and can't see methods for this anywhere. Also it ...
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4answers
198 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] ...
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5answers
591 views
How to get an ocean shapefile from a very detailed land area shapefile?
I am looking for a possibility to "invert" a shapefile. What I want to do is to convert a shapefile with the continents and islands into a shapefile that has water polygons. The existing ocean ...
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3answers
2k views
How To Convert A Set of ARC/Info ASCII .e00, .e01, .e02, etc Files Into .shp Files
I have a set files that I downloaded with extensions (.e00, .e01, .e02, etc). I have read that these are files used by ARC Info mainly, but I do not have ARC and nor am I really that interested in ...
7
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1answer
152 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 ...
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3answers
1k views
How to delete multiple selected polygons at once?
I'm new at this, a novice at best. I'm using QGIS 1.7.3. I simply want to select a large number of polygons on screen and hit the delete key to delete them and resave the shapefile. Can this be done?
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I am struggling to convert .dwg to .shp, ideas?
Any ideas as to how can I convert dwg to shp?
I tried Kosmo and gvSIG. gvSIG kind of worked but it seems like I lost information..
in addition everything was converted into lines, no polygons. I can ...
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5answers
2k views
Problem loading OS OpenData multipoint shapefile into PostGIS
I am trying to load the OS OpenData Strategi shapefile dataset into a PostGIS database. I have had no problems with the polyline and polygon shapefiles, but I am unable to get the point shapefiles to ...
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5answers
1k views
What is the hierarchy of features in ArcGIS? Is it different in other software?
first post - new to GIS.
My understanding of shapefiles is that they are (contain?) featureclasses, that contain features (points, polylines, polygons). Is there a clear hierarchy for these files. ...
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8answers
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Corrupt shapefile. How to fix
I have a shapefile I was working on (ArcGIS 9.3) get corrupted somehow and it gives me the error "Number of shapes does not match the number of table records.". What I would want is to recover this ...
6
votes
1answer
824 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
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1answer
273 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 ...
6
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2answers
389 views
How is the default label field chosen by ArcMap?
I have 2 questions:
I know how to manually go to Layer Properties>Labels tab>Label Field and choose my label field. I also know that I could set up my primary label field and save the setting as a ...
6
votes
3answers
1k views
How to load OSM data into PostGIS preserving all Tags?
I am new to the field of GIS and am trying to view source tags in OSM. I have downloaded the shapefiles from http://downloads.cloudmade.com and have loaded them into Postgres. When I view the data, I ...
6
votes
1answer
1k views
Updating Lat/Longs and actual position of point shapefile
Greetings everyone, quick question regarding lat/longs and updating a point features actual location. I have a point shapefile with over 3000 points that are updated frequently, when they are updated ...
6
votes
1answer
173 views
Create multiple shapefiles from one table
I've imported a table into ArcGIS which I'd like to split into multiple shapefiles. The splits would occur between groups of records separated by any of 3 columns. In other words, col1, col2, and col3 ...
6
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1answer
988 views
How to convert Shapefile geometries to WKB using OGR?
I got the geometry of a feature of the shapefile, and i want to save that geometry in the postgis (in WKB formats like it happens when we import shapefiles using shp2pgsql and psql commands). How do I ...
6
votes
2answers
121 views
How can I turn a vector layer into a graph G = (V, E)?
I have a number of rail networks, in the form of shapefiles of the "line" type. I want to turn them into a more abstract graph format, i.e. the kind with vertices and edges, not chart-type graphs. ...
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1answer
2k views
GIS, R and shapefiles
I have some data that encodes locations in certain countries, such as the US and China, that I would like to map. The data includes location name in Latin, extended Latin and other scripts (Japanese, ...
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881 views
Convert PS/EPS/AI to shapfile?
Are there any programs which can convert from Postscript, Encapsulated Postscript, or Adobe Illustrator file formats to a shapefile? What about adding geo-referencing?
I'm also open to recipes using ...
6
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1answer
205 views
What is the best way to store Flickr's Shapefiles Public Dataset in SQL Server 2008?
I'm wanting to import specific locations from the Flickr Shapefile Dataset into SQL Server would like to know what is the best way to store the data in SQL Server 2008?
Link the the 1.0 Dataset: ...
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2answers
364 views
reorder a polygon shape file (not sort)
I've written a script which produces a polygon shape file of the extents of all the thousands of rasters in our library. I want to organise the FID so that the files with the largest extents are on ...
6
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2answers
534 views
Google Earth Enterprise & ArcGIS - How do you use them together?
I have been fielded a few questions about Google Earth Enterprise--which I don't know anything about, I'm having a time finding answers to the two following questions, which can probably be summed up ...
