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
63 views
Global Mapper - .SP1 conversion to Shapefile
Does anyone know how to convert an .SP1 file to an shapefile from Global Mapper to ArcView 10.1? The .SP1 is a GPX file.
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1answer
42 views
why sql file generated by postgis was different in notepad and pgAdminIII?
When i imported a shapefile which contains some polygons into PostGIS by command line on Win 7, a problem puzzled me:
The sql file generated by shp2pgsql opened with notePad has the geom ...
1
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0answers
45 views
How to remove polygons in shapefile based on attributes in R [duplicate]
I have a shapefile where some attribute data is blank. I can delete those rows attribute table using na.omit. However, the polygons remain when I map the shapefile. I'm using R to make these changes.
...
2
votes
2answers
147 views
How to overwrite a Shapefile
I want to be able to overwrite a shapefile if it exists. I think my code needs some tweaking. I am using v10. I am able to delete the actual .shp file but the .dbf, .shx, etc still remain, so if I try ...
0
votes
2answers
54 views
loading CanVec directory full of .shp files
I'm totally new to QGIS, and trying to view a Canadian Topo map as published on an iMac - I don't want to change it.
...
3
votes
0answers
46 views
QGIS Workflow Problem
I have 3 SpatiaLite layers (one without geometry but with fields that need to be filtered, one with points and one with polygons, both without any non-geometry fields) that need to be combined to a ...
3
votes
2answers
87 views
I am unable to draw a shape layer
When I add a new shape layer or want to edit an existing one, nothing is happening. I even don't see the dots where I'm clicking.
Maybe the problem is I deleted some layers (by opening the .qgs as a ...
0
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0answers
59 views
Sort geometry + data table in ArcGIS with Permanently Sort Records (PSR) v1.0
When i run the algorithm gives an error:
Order_ ASCENDING # # # #
Start Time: Fri Mar 01 17:06:33 2013
000576 ERROR: Script Associated with this tool does not exist.
Failed to execute (sortrecords).
...
7
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1answer
189 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 ...
2
votes
1answer
97 views
QGIS opening shp file: why does it crash?
I am trying to open a shp file from the EEA (Urban Atlas), and with some of the shp files qgis keeps crashing as soon as I try to load it.
QGIS 1.8.0 is running on Windows 7; I reinstalled QGIS, ...
4
votes
2answers
217 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-- ...
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1answer
88 views
How to reproject this vector layer?
I have a dxf file and use this tool to convert it to shapefile.
Then I apply some affine transformations and get a shapefile that does not fit the shapefiles downloaded from osm (EPSG:4326).
I know ...
3
votes
2answers
81 views
Merging polygons at county level to state level
I have a shapefile that represents counties (admin 2) only, but I need to create a state level (admin 1) polygon file (I'm using QGIS). I will need to sum up (or average) the relevant data at each ...
11
votes
2answers
236 views
Is there a public shapefile with the London Underground stations and lines?
Is there a public shapefile containing the stations and lines of the London Underground? I've been doing some intensive searching but I can only find the coordinates of the stations, or the lines in ...
4
votes
2answers
257 views
How to write Shapely geometries to shapefiles?
Can someone demonstrate a simple way to write geometry data-structures from shapely into shapefiles? I am particularly interested in polygons with holes and linestrings. It would also be beneficial to ...
2
votes
0answers
79 views
Adding polygon to existing database column
I've built a database with postgreSQL with a few geometry columns.
When I add some data to my non-geometry columns, I can see them in QGIS when I connect to my DB using postgis. Now, I want to add ...
0
votes
0answers
45 views
What vector file type yields the greatest detail with the Heat Map plugin?
I'm using .shp files built from .csv files and having quirky results. Perhaps there is a better way to begin.
The heat map appears to be accurately describing the data but calculates a huge area in ...
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0answers
100 views
Can I create a custom Shapefile for SAS with QGIS?
Okay - I am in the process of configuring GIS within our organisation and am waiting for QGIS to be installed.
My aim is to use QGIS to compile a custom shapefile of the business regions used by our ...
0
votes
1answer
41 views
How can I create a button to add a POI layer?
I am making a map of a city with openlayers. I have the shapefile data of the POI (hospital,bank,school etc.) I want to add the layers with buttons not in layerswitcher. Like whereis.com's quick ...
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2answers
74 views
Why does my 113th Congress Shapefile match up with the wrong districts across the country?
I downloaded a Shapefile from the Census on the 113th congress broken down by district nationally: http://www2.census.gov/geo/tiger/TIGERrd13_st/nation/tl_rd13_us_cd113.zip
Within the .dbf file, ...
2
votes
1answer
110 views
QGIS rounds up the coordinates to six decimals when saving layer changes
I have the problem that when I create a new point (in a point layer) or a new line (in a line layer of course) and I save the changes to the layer (so NOT the project save) then QGIS rounds up the ...
6
votes
1answer
163 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 ...
3
votes
1answer
139 views
How to create a layer of directional/horizontal wells?
I have never needed to create a horizontal/directional shapefile (oil / gas well). What do you need besides the lat/long, basic well info? Direction/Length for the line? My question is - What goes ...
3
votes
1answer
200 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 ...
0
votes
1answer
281 views
How to convert AutoCAD file to Shapefile for map from ArcGIS API 3.2 for JavaScript?
I have an AutoCAD file that I want to convert to Shapfile to appear in a map by API for JavaScript in .net. What do I do?
4
votes
2answers
194 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;
...
3
votes
1answer
164 views
How to convert shapefile to vector emf?
I want to convert a shapefile to an EMF file. The EMF file must be a vector image, not a raster image. Please suggest to me some good packages or tools. Thanks in advance.
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0answers
37 views
Spatial adjustment for vector shp files in QGIS [duplicate]
How to do spatial adjustment for vector shp files in QGIS?
I have a set of 4 cadastral maps of adjacent locations. I have converted them form DWG to DXF and then to vector shapefiles. They are not ...
11
votes
1answer
236 views
The next big thing in standardized spatial data exchange format?
I remember reading something a few months back, in the latter half of 2012, about a coordinated group effort to design a new standard for sharing geographic / spatial data. It has or aims to have the ...
0
votes
1answer
125 views
How to convert contours and raster surface from Petrel to shapefiles and rasters that can display in ArcGIS?
We have Petrel which is used to produce a surface of a geological horizon below the earth's surface. In Petrel we have contours (vectors) and a raster image of the same area, also visualising ...
6
votes
1answer
139 views
GIS storage format for better performance - Android device
We have developed an android application which loads different eco-zones and does geo-fencing based on current GPS location.
We have converted a shapefile to KML, then to JSON format, for loading in ...
2
votes
1answer
130 views
How do I map data by zip code?
I have a set of data that corresponds to zip code, and I'd like to turn that into a map. From what I've gathered thus far, zip code shapefiles are difficult to find and work with due to the fact that ...
4
votes
1answer
172 views
Export KML to SHP in Javascript
I need my Javascript browser application to convert/export KML documents into ESRI shapefiles. Is there any JS library that can do it? I tried googling, but no answers so far (at least, not in ...
3
votes
1answer
106 views
Shapefile postgis database to be queried by GeoDjango
I would like to create a Postgres database (postgreslq-9.1 and postgis-2.0.2) storing several shapefiles but I am uncertain on how to implement it so I'm searching for some advices.
I have already ...
4
votes
4answers
207 views
Updating 30 Shapefiles, adding attribute and populating based on data
I need to add an attribute to each shapefile attribute table in ArcMap, I was thinking to do it in SQL, but I'm not sure how to go about doing it since I'm very new to ArcMap.
Can someone explain to ...
2
votes
2answers
182 views
Why are edits in shapefile table not saved?
I have created a shapefile (point data) and wish to change some parameters in the files table data. I can edit the data and see the coresponding change in my my symbology. However, when I save the ...
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vote
4answers
786 views
How to Read a Shapefile using C#?
I am new to ArcGIS and trying a few things..
I'm trying to read shape file(which is supply as an input) using c# and
I want to generate a .pdf file which contains underlying metadata information ...
3
votes
2answers
326 views
Why don't some layers line up afer converting Mapinfo TAB to Shapefile?
I have 6 MapInfo layers / TAB files which I need to convert to ESRI ShapeFiles, preferably using QGIS. When a colleague opens these in MapInfo 10, they all look fine and line up correctly. When I open ...
2
votes
4answers
288 views
ArcInfo Grid ASCII to ESRI Shapefile conversion
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 ...
0
votes
1answer
99 views
Transform ssf to shp [duplicate]
Good Morning
Do you know a free program that transform *.ssf to *.shp files?
Thanks
Eduardo Abade
2
votes
1answer
127 views
Create a shapefile from geometry
Please excuse my lingo, I am still learning some aspects of geo spatial and arcpy.
I have a python script that takes a shapefile. The shapefile consists of a polyline. I have traversed the polyline, ...
6
votes
1answer
520 views
How can I merge adjacent polygons in a shapefile that have been split at tile boundaries?
I'm currently using building data from the Ordnance Survey Vectormap District and I've noticed that a lot of building polygons are split in 2 because of the way the OS split up the shapefile.
This is ...
5
votes
2answers
280 views
How to get text attributes from shapefile with python / pyshp
I have a shapefile, containing only points in XY-coordinates and a string attribute for each point. I would like to read the coordinates and the attribute for postprocessing in python, but can't get ...
4
votes
2answers
186 views
Splitting DXF layers into Shapfile layers in QGIS?
When i load a dxf into QGIS all the layers are present in the attribute table. Is it possible to split this "entities" layer in QGIS into its component parts and save each component part as an ...
1
vote
1answer
79 views
tools and ETLs for migrating data benchmarking - from shapefile to SQL SERVER
i need to migrate my shapefiles to my database SQL SERVER, and i don't know what's the best tool or ETLs to choose, i already tried FME Desktop and i succeded to load the shapefiles on my db, but ...
0
votes
0answers
51 views
why the Dxf2shape pluging doesn't work?
I have a problem with the dxf2shape converter in my windows pc, when I try to make a conversion, the shape file is not generated and sometimes the program crashes, I have tried this plugin in a ...
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vote
3answers
227 views
Exporting 2 shp layers to geojson using quantum GIS
I will explain with an example:
I have 2 shp files for Tanzania.
Tanzania inland waters http://www.diva-gis.org/data/wat/TZA_wat.zip
Tanzania administrative boundaries ...
5
votes
1answer
176 views
How to determine optimal windmill placement to maximize production?
How can I add automatically the maximum number of points (dots) with 6m diameter and 100m distance each point from other into an area. The dots will present the windmill base (6m) and I want the ...
5
votes
3answers
182 views
draw shp files or kml files on ipad?
I need to be able to draw a polygon in the field while the landowner is there to approve it. Is there an app that is easy to use so all of the field hands can operate it? I also need to be able to ...
2
votes
0answers
49 views
Applying depth to Shapefile
Apologies if this question has been answered before.
I'm digitizing a historic coastline and would like to add a single depth figure to it in order to merge it with a current contour model. Is there ...
