0
votes
0answers
76 views

Congressional Redistricting

I have a project coming up where I need to create new congressional district looking at only total population data. I am planning on using the census tract level of data, but I am having some ...
2
votes
1answer
63 views

How to symbolize different information that's joined to a single plot in a shapefile

I am a student doing an industrial survey in Windhoek, Namibia. We mapped different businesses and later did spatial analysis. Questionnaires were handed to different businesses and then that ...
4
votes
1answer
662 views

Changing projection in KML from Google Earth to Maps

I have created a bunch of map tiles for Google Maps mistakenly using the Google Earth projection. Is there a tool available to batch warp the KML files to the correct projection or will I need to ...
0
votes
1answer
183 views

Featureclass search failing in C++. But working in C#

I need to perform search on a FeatureClass using ISpatialFilter for a given Point (x,y). I wrote a program in C# to do that and its retrieving the features as expected. But the similar program in C++ ...
6
votes
2answers
5k views

What's the difference between “Copy Features” and “Feature Class to Feature class”

I have a feature class within a feature dataset in a FGDB, and I need a copy of it in another FGDB. In ArcGIS 10.1, I've used the "Copy Features" tool, and it looks to be the same (according to the ...
1
vote
2answers
414 views

feature label not work in xhtml file

Good Morning: I have a problem, I develop an jsf application with openlayers api, this example http://openlayers.org/dev/examples/vector-features-with-text.html work fine with html page, but when I ...
2
votes
0answers
3k views

Simple Dojo Pop Up Window

I'm working on my first web application using the JS API and am looking to add a simple tabbed pop-up window that can be called on the load of the page that can display map instructions and a general ...
1
vote
0answers
802 views

Arrow flow lines from a contour map

using QGIS (or even GRASS) is it possible to label a contour lines shape with arrows that indicate the flow direction? Briefly: I have a point shape with elevation values. I make an interpolation map ...
6
votes
1answer
2k views

Where is Object Loader found in ArcMap?

I've only used the Simple Loader in ArcCatalog. The documentation also mentions an Object Loader which resides in ArcMap. Where do I find this?
3
votes
1answer
155 views

Are there plans for improving performance of vector files in QGIS? [closed]

Does anybody know if there are any improvements planned pertaining to the performance of vector files in QGIS? Right now, a 1 GB file with contour lines needs several minutes to open. In addition to ...
3
votes
4answers
2k views

Cannot fix QGIS after upgrade to Ubuntu 13.04 Raring

I have following problem. After upgrade to 13.04 I had problem with PyQGIS mentioned here. I followed almost all advices described there, finally removed QGIS (had 1.8 Lisboa) and added the Ubuntugis ...
1
vote
1answer
89 views

How to fill inn A, B, C …Y, Z, A, B, …Y, Z, A, B, and so on? [duplicate]

as a second part of a problem i am trying to solve. I need help to figure out how to fill in serial letters.. Starting at A.. going to Z and starting over at A again.. I have a tabel with numbers ...
2
votes
2answers
117 views

Is it possible to have another CRS in the status bar than used for the map?

I am new to QGIS. When I use OSM or Google Maps as a basemap via Open Layer Plugin, the map should be projected as EPSG: 900913. However, the Coordinates shown in the status bar are useless for me, ...
2
votes
2answers
931 views

Create Raster file in R from Matrix and latlons

I could use some advice on how to create a Raster file in R with a Matrix of data points and the coordinates stored in a separate file. Both, data and coordinates come from a NetCDF file. I extracted ...
0
votes
1answer
91 views

How to smooth XY Co-ordinates of linear feature?

I need to smooth xy co-ordinates. see the image: In this case, i need to remove 5,6,7,8 and 9th co-ordinates or need to make those co-ordinates as a straight line between 4th and 5th. is there any ...
2
votes
1answer
963 views

Batch convert OSM/PBF data

I need to import some OSM data about a region of Italy into a SHP file or Postgres DB, possibly with batch process. I already use OGR2OGR to batch import data from SHP to Oracle and Postgres and I ...
7
votes
0answers
197 views

Joining layers with respective elements with PostGIS Topology

Recently I have started using PostGIS topology extension, but I have some difficulties in understanding how the structure works: One of the key points is the use of "layer"s: as of what I understand, ...
2
votes
0answers
170 views

How to compute a point trend line?

I have a track of GPS position dots that are roughly going in a straight line, I would like to simplify the line to only have the central point from a group as in the bottom image creating a trend ...
4
votes
1answer
624 views

How to highlight feature clicked as row in table using OpenLayers+jquery?

I am a Masters student from Sweden. I am doing my Masters thesis on Internet mapping. In my project I am trying to display research data from my department on Google maps. I am using OpenLayers java ...
2
votes
1answer
900 views

How to connect Postgis database with/in Remote Servers…?

I am preparing a 'Web based map' application using 'Geoserver-Openlayers-Postgis'... Now, I am trying to connect my Postgis database(located at 10.50.110.11 location) with the following command from ...
9
votes
1answer
5k views

GDAL/Python: How do I get coordinate system name from SpatialReference?

In Python, using GDAL, I've extracted a raster's projection as a WKT string as follows: wkt = dataset.GetProjection() # wkt is ...
0
votes
0answers
331 views

Display colour coded road traffic data in QGIS

I would like to colour code a shape file containing road polylines to represent the heaviest flows of traffic. The shape file contains attribute data linked to each section of road where road traffic ...
1
vote
1answer
368 views

Deleting duplicates from multiple tables

Using the delete duplicates tool is there a way in Mapbasic to have it run through a large number of tables, or do you have to manually select each table and run the tool? Cheers, Jon
1
vote
2answers
58 views

Field within a Field - Donut Parcel?

Firstly, apologies as I'm a newbie and have only been studying GIS for a few months. I am digitising field boundaries and have a field within a field, and am wondering what the best way of ...
2
votes
1answer
789 views

Understanding the QGIS API documentation to write python code

I am not sure how to use the API documentation to code in Python. For example, I want to determine whether a layer is a point, line or polygon layer and found the following in the API documentation: ...
0
votes
1answer
511 views

Does tile server renders every request?

I am trying to understand how tile server handle requests. I red about Mapnik which "creates" the map using OSM, Does "creates" means that every request is rendered and returned? If yes what is the ...
0
votes
0answers
177 views

Grass won't import shapefiles

I have a problem involving the import vector data command, specifically importing shape files. I installed QGIS on a pc at work and there I could import shape files into GRASS GIS 6.4.3RC2 (which is ...
0
votes
1answer
1k views

Openlayers – Empty spaces when resizing map in height (opera and safari)

The following test site is supposed to let the map extend to the maximum available space and to ensure a minimal height of 300px. This works perfectly in firefox. But in opera and safari on all apple ...
2
votes
0answers
111 views

Base station coverage analysis in QGIS

I want to find base station coverage for a instant location. I have building data. And i determine optimum coverage as 500m far away from a base station (buffer). So how can i find optimum base ...
1
vote
2answers
184 views

HP Plotter 1050c plus

I have an (1998 manual) old plotter HP PLotter 1050c Plus (only works on Windows XP)... It prints fine, but the Source/Receivers are not showing up on the map nor the legend. Everything else is ...
1
vote
1answer
185 views

Why won't lines from GPX simplify/generalize/smooth?

I am working with GPX data. I imported them to ArcGIS by 'GPX to feature' and then I created lines from these points. I am trying to smooth (or simplify) the lines now, but the tools 'smooth line' and ...
1
vote
1answer
131 views

Setting More Than One Workspace

I have a number of tables that contain known values in a field. For example, I have a soil type table with one field in it. That field contains a list of known soil types. I have another table that ...
5
votes
1answer
269 views

Listing ArcSDE versions using ArcPy?

I have an ArcSDE geodatabase with different versions for each user. How can I list each version using ArcPy?
0
votes
1answer
545 views

how to create a new raster from one field of a raster with several fields in a RAT

I have a raster with an attribute table containing many fields. I want to create a new raster from one field using arcGIS 10.1.
1
vote
5answers
3k views

Arcpy to copy a layer in the ArcMap TOC, rename the copy, and paste back to TOC?

I want to make a copy of a layer in the ArcMap TOC (passed to my script as a Feature Layer), assign the copy a new name, set a definition query on it, and then add the copied Feature Layer back into ...
1
vote
1answer
319 views

Getting Google Earth Plugin to work using OpenGeo suite-sdk

I am learning to make a web GIS using OpenGeo Suite-SDK. I have been trying to get the google earth plugin to work but I still fail to make it. I read from ...
1
vote
1answer
88 views

ArcGIS 9.3 geoprocessing service output consideration

I'm developing geoprocessing service which do few processes with geographic data. I would like to get somehow geometry of those data and use it in my web aplication (JS ArcGIS API). Now I'm wondering ...
1
vote
1answer
206 views

Need python code example - setting a combo listbox to Null

I want to be able to set the value of a field to Null using python, but I get an error. I am using arcpy.CalculateField_management Any help would be appreciated. Rob Smith
8
votes
3answers
1k views

How to mirror two geodatabases on the fly?

I'm new to arcgis and its applications. We have the full suite of arcgis solutions (arcgis server, desktop, arcgis sde) We have a requirement... geodatabase (A & B) A & B reside on 2 ...
8
votes
1answer
4k views

What are Pros and Cons to ArcGIS Online Organizational Account?

Esri is making a big push towards ArcGIS Online as a means for map applications. They pushed it really hard at the recent Southeast User Conference and did a good job at highlighting its advantages. ...
3
votes
3answers
3k views

How to add a polygon from PostGIS ST_AsGeoJSON into Leaflet?

I try to use the following function to add polygons to my Leaflet map. function polygon(geojson) { alert(geojson); // alert for testing layer = L.geoJson(geojson); layer.addTo(map); } ...
0
votes
2answers
921 views

Tile script (Mapnik) with OpenLayers - Problem with projection (900913)

I use Mapnik python bindings in a geodjango application to render tiles in openlayers with datasource stored in postGIS in 900913 projection. The feature seems to be rendered correctly in the ...
3
votes
1answer
1k views

Why is Oracle Spatial Query Layer Not Displaying in ArcMap?

I am having an issue with an Oracle query layer using SDO_Geometry not displaying. I have created a polygon layer/table within oracle, registered the table with the SDO_GEOM_METADATA and created a ...
1
vote
1answer
2k views

How can I create a line with three points with Python in QGIS?

I'm new to Python and I'm having some dificulties. I want to create a simple layer with a line in the console of QGIS with Python. How can I do that?
0
votes
1answer
661 views

Intersection between two LineString gives “Non-noded intersection”

I am using NTS in my application and I have two line strings which are as follows: Line String 1: LINESTRING (51055.227410858584 52102.041513978584, 51073.39084032347 52096.46568847251, ...
2
votes
1answer
255 views

Creating a systematic rectangular grid

How can I produce a point shapefile (or simply point coordinates) that represent a systematic rectangular grid? At least three input variables would be required: distance between points, distance ...
3
votes
1answer
184 views

File size limitation for shape file

I am going through File size limitation for shape file esri support article (this article applicable for ArcGIS 9.X version not for 10.X ) I know may be same article will applicable for 10.x version ...
1
vote
0answers
31 views

error in loading raster tiles on postgreSQL [duplicate]

I am trying to import raster data from PostGIS to GeoServer. I follow the instructions given on this link. ...
0
votes
1answer
271 views

Dynamic data on overlay layer in openlayers

I am using openlayers to visualize an industry using image as the layer. On the raster layer I have created an overlay layer.Is it possible to show updated values (dynamic runtime values - as integer) ...
3
votes
1answer
602 views

How to get Lon/Lat values from the postgis raster type column

I have a tiff raster in my PostGIS 2.0 database. I want to get the value lat/lon and extra data like temperature from the raster type column in postgis table. I want the table with columns ...

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