All Questions

4
votes
0answers
239 views

Exporting a Featureclass to Shapefile with field names changed.

I have some annotation feature classes stored in a Pgdb.I want to export them to a shape file.Some field name need too be changed in that shape file.I am using vb .net to do this.Any help is ...
4
votes
0answers
431 views

How to offset points along line in QGIS?

I used the "Profile from Line" plugin to create evenly spaced points along a line in QGIS, but I'd like to offset them to either side of the line. I spose I could draw two lines parallel to the ...
4
votes
0answers
458 views

ArcGIS Cost Path Analysis - How Is Arcpy Cost Path Analysis Tool So Much Faster Than ArcObjects

Although I love slinging some python to create geoprocessing scripts/services, I was under the impression that using ArcObjects to do the equivalent operation(s) will have better performance. I've ...
4
votes
0answers
981 views

Map printing using ArcGIS silverlight API

I am using a GP task to print my map and its legend. Well it works fine. But it is really slow. Also I am not able to print the route event layer that I create. It does not show on the map. Please ...
4
votes
0answers
272 views

convex hull over selected features

I am trying to achieve a convex hull over a feature Set returned by a query. But have been facing the error below which i am not able to figure out In order to debug to see how the convex hull works ...
4
votes
0answers
346 views

Creating a VB.net Dataset in Visual Studio 2010 from an SDE Geodatabase

I am building an ArcMap Addin that contains several Windows Forms with controls that need to be bound to a database. I am trying to decide whether or not to use a native SQL Server Database or an SDE ...
4
votes
0answers
265 views

Can GeoTools parse GML CRS definitions?

A kind of branching of this question. Soon I will need to handle GML Coordinate Reference Sysyem definitions in a Java servlet. Links: GML OGC reference. Concrete example. I know that GeoTools ...
4
votes
0answers
4k views

Populate an existing popup with an AttributeInspector after RelationshipQuery returns results

Here's the workflow: A user selects a feature layer polygon, views a popup. A link added to the popup will run a RelationshipQuery to view related records. How can I get the RelationshipQuery results ...
4
votes
0answers
293 views

How to convert a set of points to a solid object?

I have a data generated as the output of some numerical processes. I need them to be converted into 3D solid objects (as CAD solid format) to make them importable for some particular numerical ...
4
votes
0answers
711 views

OpenLayers: WFS request to GeoServer to retrieve “name” & “featureNS”

Using WFSGetCapabilities I sent a GetCapabilities request to GeoServer. From the result of WFSGetCapabilities().read(), I can loop each featureType and retrieve some basic info(e.g., name, title, ...
4
votes
0answers
630 views

How to find layer ID and name from Identify query using ArcGIS Web ADF?

I need to retrieve the layer ID of every layer returned by the IQueryFunctionality.Identify function (I am using ADF with .NET) Identify function spits out a DataTable array for layers which have ...
4
votes
0answers
790 views

HRESULT E_FAIL error when doing batch geocoding in ArcObjects

I am trying to write a batch geocoding application in ArcObjects/C# and keep getting the meaningless "Error HRESULT E_FAIL has been returned from a call to a COM component" error (error code ...
4
votes
0answers
282 views

How to write a script to square polygon corners?

I'm looking for a script that will square the corners of polygons that are near 90 degrees but not exactly. Near could be dealt with via a variable, for example within 5 degrees of 90 (85 - 95 ...
4
votes
0answers
935 views

FeatureLayer SaveEdits failing

I've created a layer which I have bound a DataFeatureForm. Everything is working hunky dory, up to the point where I try to call the layers SaveEdits method in the EditEnded event. When I call this ...
4
votes
0answers
893 views

How to split kml file or extract Placemarks?

I have a file of state 2001 assembly districts outlines, from http://goo.gl/dJPyx in Mapinfo MIF format. I've created a kml file from that using ogr2ogr. These are the outlines of each assembly ...
4
votes
0answers
474 views

Why doesn't the gml 3.1.1 schema validate with xmllint?

Running xmllint on the gml 3.1.1 schema fails, even though the release notes claim that this release was created to get the schema to validate using 'common tools'. There's questions about this on ...
4
votes
0answers
334 views

Trying to fill polygon fills the entire map

I have been given some shp files to be displayed using Mapserver. Until now I was able to find the correct projections, display the map, and show labels. However, I have problems with polygon colors. ...
4
votes
0answers
316 views

Bad data beaking IRelationshipclass.GetObjectsRelatedToObjectSet

I have two workspaces - one a File GDB, the other SDE (SQL Server). Both workspaces contain the same data with the same relationship classes. When identifying features in ArcCatalog, the results ...
3
votes
0answers
21 views

Prevent PostGIS Topology from splitting edges on line insert

I'm dealing with a large amount of road data represented with PostGIS Topology types. Anytime I add an edge over another edge, the edge is automatically split and a new node is created at the ...
3
votes
0answers
28 views

How to geocode a building with different entrances

I am working on a routing map for a university campus. the routes are modeled and network analyst works fine. The problem: Many of these buildings have several entrances. Is there a way to geocode ...
3
votes
0answers
80 views

Is there any reason not to upgrade to Windows 8.1?

I have the option to upgrade to 8.1, but before I do I want to see if anyone has had any compatibility issues. I mainly run ESRI, but occasionally use QGIS, and other open source products. Has anyone ...
3
votes
0answers
43 views

ArcGIS Viewshed keeps crashing

I've been trying to run a viewshed analysis in ArcGIS 10.1 and everytime I've tried running it, it crashes the whole program, with no error. See the image below. I've made sure it has OFFSETA field ...
3
votes
0answers
28 views

Definition queries deleting themselves in ArcMap10.2

After switching to ArcMap 10.2 I've noticed that my definiton queries will seemingly randomly remove themselves. I have no idea what triggers the deletion since I have noticed it after reordering ...
3
votes
0answers
16 views

Labelling Max coverage by Area

I'm struggling to find a quick way to identify and label an area by the maximum coverage of an overlapping polygon. Has anyone done a process like this lately? I'm currently playing with the Pivot ...
3
votes
0answers
28 views

How to export two related layers to KML with multigeometry using QGIS?

From QGIS, I would like to create a KML file, for GoogleEarth, which contains multigeometry in that KML file. By example: consider two layers in QGIS -- the first layer contains polygons, and the ...
3
votes
0answers
14 views

How to set m parameter of clusterR function in R?

I want to manage a clustered computation on raster and thus use the "clusterR" function in R (package 'raster'). However, there's a tuning m parameter to set, but the only explanation about this ...
3
votes
0answers
22 views

What is the area that OGR extracts from the (geometry) shp files for polygons?

The ESRI July 1998 technical documentation for polygon shapefiles at page 10 makes no mention of either area measures or length measures (apart from byte/record-layout matters). Yet OGR enables me to ...
3
votes
0answers
16 views

QGIS Cross Section Profile Distance using Ellipsoid?

I am working with QGIS 1.8 and 2.6 and can't get any of the Cross Section Profile tools to provide the ellipsoid ("proper") distances. All the distances use geographic coordinates which are too ...
3
votes
0answers
49 views

How to submit user scripts for Processing Toolbox (QGIS 2.6)?

QGIS 2.6 change-log says that now there is some kind of repository where users can submit their scripts to make them available for everyone. Unfortunately I was unable to find any details about how to ...
3
votes
0answers
13 views

Action: Move pointfeature to other layer - Point becomes Multipoint

I'm trying to write an action that moves a pointfeature from one layer to another. It works fine until i try to save the layer with the new feature on. He says he can't save a MULTIPOINT to a ...
3
votes
0answers
53 views

Error with feature to raster conversion in ArcGIS for Desktop?

I am trying to convert an ESRI geodatabase into a raster using the 'Feature to raster' conversion tool in ArcMap 10.1. The geodatbase is available publicly from the USDA Forest Service website (South ...
3
votes
0answers
39 views

PyQGIS: Speed up for adding features and attribute arrays?

Context: I'm writing a dynamic import tool for QGIS (2.2 to 2.5) with python. Datatype: Binary Datasets with environmental simulations from HPC which might contain millions of features and terabytes ...
3
votes
0answers
24 views

Dilating a polygon by a circle sector

I want to dilate a polygon by a circle sector in ArcMap. Because my python skills are not that good to figure out how I can use the R prototype of How to create an oriented buffer using arcpy? . Is ...
3
votes
0answers
52 views

SetNull in Python script for Arcgis assign 0 value

I am writing a script in Python where I assign to few Tiff defined in a function as inputRaster a NoData value as follows: whereClauseSetNull = "VALUE > 100" outSetNull = SetNull(inputRaster, ...
3
votes
0answers
24 views

MapServer - Os Open Data - Tutorial

I have recently received my OS OpenData discs from Ordnance Survey, and for the last two evening tried to get this data into MapServer for ultimate use as a WMS for OpenLayers. Safe to say I have ...
3
votes
0answers
25 views

Editing Cursor for GPS live tracking in QGIS 2.4

I am interested in using QGIS 2.4 for vessel navigation due to its ability to display NOAA vector charts or BSB's as well as user created shapefiles. I currently oversee a project that requires ...
3
votes
0answers
53 views

arcpy.mapping.ExportToTIFF fails to render layer?

Has anyone else had this problem? I have an mxd file with two layers in it, one of which is fairly 'heavy' (i.e. takes a minute or so to draw). All layers are visible by default. I have the ...
3
votes
0answers
21 views

Generate a series of ellipses on a line

I am trying to create a series of ellipses (mocked up in green below) of defined dimensions along a line. I have got as far as generating regularly spaced points along the line that are attributed ...
3
votes
0answers
63 views

Select and copy attributes features in ArcMap using Python add-in tool?

I'm trying to add a tool to an add-in toolbar to select features from an existing feature class and copy attributes to another feature class,from point to point. TopoHeight_Field_Name='Comment' def ...
3
votes
0answers
40 views

How to set Vertical Coordinate system when creating a 3D shapefile?

I'm working with GDAL v1.11 and am seeing the vertical CS stripped when exporting a 3D shapefile (from oracle spatial). This is the command I'm running: ogr2ogr -f "ESRI Shapefile" B_POINT.shp ...
3
votes
0answers
29 views

What Does the Cell Value in a Composite Raster Mean?

When I make a composite raster in QGIS using the GRASS r.composite tool and then click on a certain cell I get these values in the blue/green/red/composite rasters: blue = 124 green = 124 red = 172 ...
3
votes
0answers
57 views

Hexagon binning using Google Maps

I have a bunch of geolocated points that I am looking to cluster on a google map using hexagons. These clusters will be stored in a db for quick retrieval and will be reduced to a single point and ...
3
votes
0answers
62 views

Handling mountain shadows when classifying Landsat 8

I'm trying to classify some area in northern Mongolia using Landsat 8 satellite images from 2013. Since the recordings were made in winter, the sun is very low at the acquisition time. Therefore there ...
3
votes
0answers
56 views

Most efficient way to intersect overlapping polylines

I have 4 multipart polyline shapefiles (download a sample dataset here). The geometries are identical, except for the length of segments in each shapefile. They represent 4 variables describing an ...
3
votes
0answers
24 views

Both-sided transparency in ArcScene for extruded features

I'd like to extrude my polylines and make them transparent, but from both sides. As you can see below, the transparency works only on one side. I think it's something with the side-orientation. I can ...
3
votes
0answers
55 views

Issue with dissolving a polygons layer in QGIS 2.4

I downloaded a dataset of roads and parks from OSM. I then buffered the roads and merged with the parks. Now - all i want is to dissolve / union all the features in the merged layer. I fail to do it ...
3
votes
0answers
45 views

Geoprocessing tool for finding specific point within polygon

I have a ArcGIS task and cannot find a solution. I try to find a certain point within a polygon (see picture). This example is handmade and I need a geoprocessing solution I point I try to get is ...
3
votes
0answers
34 views

Elevation interpolation along a (sewer) line

Here's what I want to do. I have a vector sewer line feature class that contaings a field for the high invert elevation and one for the low invert elevation. I can turn them into a raster no problem ...
3
votes
0answers
46 views

Postgis database query optimisation

I have a set of rasters in DTED format which I load into postgis database using raster2pgsql command line tool. Each of rasters is simply stored in a row and described by rid and a value of raster ...
3
votes
0answers
31 views

How to set up a base station without known coordinates

I am new to surveying, but need to set up a Topcon controller with Pocket 3-D to run 2 receivers and a grader running off the base receiver for my new job. It sounds stupid, because I can't seem to ...

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