3
votes
0answers
57 views

Can you use wildcards for column headers in Field Calculator?

I know you can use wildcards for fields like so (in the Field Calculator): case when "column" ILIKE '%example%' then 1 else 0 end Can you do something similar for the column headers themselves? I ...
3
votes
0answers
35 views

Option for 360 degree movie embedded in Open Source GIS software?

Is there any Open Source GIS software available to embed 360 degree movies with the map? For a COTS example, there is the Active Link Vision (ALV) extension for ArcGIS from IWANE.
3
votes
0answers
38 views

Raster loaded in ArcMap 10.2.1 not showing decimal places for value

I have an IMG format raster that I am loading into ArcMap 10.2.1. The pixel type and depth, as reported by the Source tab in Layer Properties is 32-bit floating point. The values, as reported in the ...
3
votes
0answers
61 views

IS it possible to run GRASS commands in the QGIS graphical modeler?

I have a geoalgorithm set up in the graphical modeler and everything runs except for the GRASS commands. It is really frustrating because when I execute these commands on their own they work just fine ...
3
votes
0answers
92 views

QGIS API - Print Composer Template produces empty map?

I have a print composer template which I'm trying to populate with different subset queries from a CSV-derived vector layer using the Python API. However, all the output PDFs contain everything except ...
3
votes
0answers
39 views

ArcMap add-in (vb.net) datagridview will crash map when right click on the title part

I find the problem accidentally. In my ArcMap add-in, there is a search function which allows the user to search the geodb based on the value of a field. It works fine but today when I right click the ...
3
votes
0answers
31 views

What projection system is used in China which is aligned with WGS84

I have some GPS tracks in Beijing. I want to project it and convert the lat long degree values in meters for calculation in euclidian space. I was wondering what is the most suitable coordinate and ...
3
votes
0answers
14 views

List Joined tables

I've a question about arcpy List* modules. I have a quite large amount of data on SDE Server. Earlier I made a list of the feature classes , and tables in the mxd-s placed there using da.Walk and ...
3
votes
0answers
29 views

NASA WorldWind : PointPlacemark label is not hidden by the terrain

I am facing this problem where the label for the pointplacemark using the NASA worldwind API is not hidden behind terrain. The symbol hides but the label doesn't. It uses javax.media.opengl.GL and ...
3
votes
0answers
61 views

How to export data from sql server into shapefile in the decimal format in QGIS 2.4?

The last couple of days, I have been working on exporting data from SQL to a shapefile in QGIS 2.4. While converting into a shapefile, the data type changes automatically from Float to Integer in the ...
3
votes
0answers
46 views

how are range domains validated when editing a feature service in ArcGIS Online?

I have a feature class and a range domain is applied to a field. I know we can use the "Validate Features" command for validation. My question is that when the feature class is published to ArcGIS ...
3
votes
0answers
53 views

Multispectral image segmentation for natural-resources applications using R

R has the capacity for image segmentation, although all of the examples I have come across utilize a single band for the segmentation (example). I am interested in combining R's capacity for random ...
3
votes
0answers
22 views

How do I separate OpenLayers methods from my own, while using inheritance?

I am working on a GIS API, that uses OpenLayers. I initialize the map lke this: xgis.map = OpenLayers.Class(OpenLayers.Map, { var mapOptions = {}; mapOptions.allOverlays = false; /* ...
3
votes
0answers
36 views

Looking for a QGIS solution to make aerial imagery ArcSDE compatiable

Would like to avoid having to use 3d Analyst and use free raster tools in QGIS or elsewhere to make aerial rasters ArcSDE compatible. This 18 page work flow is what I am trying to use. Any suggestions ...
3
votes
0answers
28 views

Algorithm for estimating position of many objects and differentiating those?

Let's assume a crowd-sourced tree location use case where a research team asks hikers to GPS the location of a specific tree type in case they encounter it. This will lead to a large number of ...
3
votes
0answers
36 views

Spatial interpolation with breaklines in R

I have a dataset consisting of irregularly-spaced points (x,y,value) that represent an area of ocean that contains some land. I need to interpolate these to a regular grid, ensuring that the ...
3
votes
0answers
40 views

Layer tick boxes embedded in PDF map

Maybe this is more of a PDF question than a GIS question. Today, I received a layered PDF map shown as a landscape A3, with a square map on the left, and with the map title, the legend, the scale, a ...
3
votes
0answers
48 views

Validity of ordinary kriging of polygon centroids

I'm in a discussion with a colleague who believes that kriging should not be used to interpolate a surface from polygon based data (i.e. with kriging applied to centroids), because this effectively ...
3
votes
0answers
168 views

Why does multi-threaded rendering not use all the CPU potential in QGIS 2.4?

I have just downloaded QGIS 2.4 which is great and ran some tests. I have enabled the multi-threaded rendering but it seems that the program do not use all the potential of my CPU. Attached pic shows ...
3
votes
0answers
62 views

Thermal Map Data

I am curious about making a thermal map to display where the hot spots and where the cool spots in a community are. Obviously the roads will be hot and the shaded areas with trees will be cool but ...
3
votes
0answers
66 views

How to find the minimum number of inspection points?

I am working on a pipeline inspection project and there is a high liklihood that some inspection tool deployment/retrival station will need to be installed on the pipe network. the problem is ...
3
votes
0answers
193 views

arcgis server performance comparison

Are there any recent comparisons/studies of arcgis server vs. open source gis servers in common tasks like providing a wms/wfs, filtering data/search performance, and so on? We received a lot of ...
3
votes
0answers
65 views

Adding Edit button to ArcGIS Javascript template?

We've been able to successfully download the Find, Edit, Filter template, customize the configurations, and host it on our own server but here is the issue we are facing now. We're looking to use ...
3
votes
0answers
63 views

Is there a “Disperse Markers” tool for QGIS?

I am using ArcGIS, but either I would like to use QGIS and maybe want to switch completely later. A have a point overlapping problem, as a result of geocoding of addresses. I have not found any ...
3
votes
0answers
126 views

ArcGIS FeatureService/Dynamic Map Service using SQL joins and aggregations

I have a bunch of operational tables, some contain spatial data, some do not. In order to fulfill all my operational mapping reports, I will need to have the flexibility to have feature services or ...
3
votes
0answers
36 views

Opposite than normal behavior in zoom with restricted extent and vector base layer

My map has OSM base layer and i have restricted its extent. This worked normally. Recently i added a blank baselayer so that the only overlays could be shown. base = new OpenLayers.Layer("Blank", { ...
3
votes
0answers
47 views

How to update location via a data streame in openlayers or Leafletjs

I'm developing a application where I need to real-time update a Location of a Map using a data stream, I'm planing to use web-sockets, Are there any guides I can follow? Or can you guys direct me in ...
3
votes
0answers
61 views

Arcpy in Python Plugin for SPSS

Is it possible to run the arcpy module in the Python for SPSS plugin to run the search and update cursors?
3
votes
0answers
118 views

ArcGIS Server 10.1 Integrated Windows Authentication with Token based

In ArcGIS Server 10.1 on Windows 7 and IIS, if wanting to secure services within an Intranet with Active Directory is that Integrated Windows Authentication ...
3
votes
0answers
61 views

How to create cost surface for least cost water transport analysis?

I am working on a project to derive least cost pathways between sites by dug out canoe travel. Has anyone worked on a similar project or found a function like the Tobler hiking function that can be ...
3
votes
0answers
590 views

How to display ONLY local country names in google maps?

I am using google maps in an application where it is important that country labels display the country name in the local language. If you pass in certain language parameters that google maps ...
3
votes
0answers
68 views

Basic arcpy script with cursors running SLOW!

I've got 2 polygons layers (no gaps): IDUs and crops. What I want is to identify the 3 largest crops by % area for each IDU. This seems common enough but I couldn't find a way to do it all using ...
3
votes
0answers
63 views

Servers that implement OGC Geo/Time OpenSearch

The OGC is close to publishing the "OpenSearch Geo and Time Extensions", which can be downloaded from http://www.opengeospatial.org/standards/requests/116. That specification is based on, but extends, ...
3
votes
0answers
152 views

Are there trade offs between using a geohash vs using a quadkey as a spatial index?

QuadKey Bing Maps uses a quadkey structure for their tiling scheme. Here is an overview of the concept http://msdn.microsoft.com/en-us/library/bb259689.aspx. GeoHash A geohash seems to be the more ...
3
votes
0answers
62 views

Using Field Calculator to Convert Data Type In Field

I am trying to convert a field that is listed as "String" because it was imported into QGIS as a CSV (rural poverty population percentages by county in NC). I need to convert the percentages field ...
3
votes
0answers
26 views

MapInfo 12 Legend settings

Does anyone know how (if) I can set the defaults within Legend Designer? I want my rectangles for each layer to default to a 20x20 square, not a rectangle. At the moment I have to change it manually ...
3
votes
0answers
49 views

Is it possible to render tile-based web mapping projects in any other projection than web mercator?

Web-mapping technology has to a large degree adopted the web-mercator projection as the standard projection for displaying geographic objects with interactive map-clients. This is due to many factors ...
3
votes
0answers
116 views

sql server spatial index performance

I have a table with around 2 million records in it. I create a spatial index, using the defaults other than the bounding box. I've been noticing that some queries are extremely fast, and some are ...
3
votes
0answers
68 views

Is it possible to link Google maps API for business from Openlayers?

I want to know whether it is possible or not? to get Google's 3 layer types in openlayers, nothing more. Just I came across a web-page about supplying private key from openlayers to google maps for ...
3
votes
0answers
152 views

Does QGIS support .sld style files for raster layers?

I'm currently looking at the documentation for geoserver, and I'm trying to load a raster and .sld file in QGIS to see if I can edit .sld files for raster layers. The .sld and raster are located here: ...
3
votes
0answers
83 views

What are the pros/cons of using an MSSQL SDE Database rather than a File-gdb in ArcGIS Server

I have taken over an ArcSDE 9.3 Enterprise database setup which has around 80% of it´s vector data in an MSSQL SDE Database system and 20% in FileGDB on the application server. I am trying to ...
3
votes
0answers
123 views

Performing cluster analysis in R with Point Datasets

I am a R-Beginner, but I want to use it for some spatial statistics. I want to check the relation between the occurrence of ill persons and the existence of water in a area of interest. To give you a ...
3
votes
0answers
123 views

How to extract zipped shapefile and check its shape type using arcpy module without writing on disk

I have a zipped shapefile saved on my disk. I want to extract it in memory and check the shape type. I'm using arcpy module and want to stick to only default modules comes with python installation. I ...
3
votes
0answers
124 views

How to compute surface of raster or any point using ARCGIS?

I have a raster image whose values are a digital elevation model of terrain. I need to know the surface type (topographic characterization) of particular points along transects of this DEM. How to ...
3
votes
0answers
76 views

How do I simplify the straight sections of (multi)Linestring in PostGres/PostGis leaving the curved sections untouched

I have (multi)linestrings containing upwards of 5000 points and I want to perform two simplifications possibly using Ramer Douglas Peucker or alternative methods in PostGis The (multi)linestrings ...
3
votes
0answers
260 views

Convert land-based camera image pixel x,y to ground lat/long or x,y,z

I have a number of cameras at various known locations (x,y,z) and directions that are above ground about 20 feet pointed at different ground locations about 100 feet away from each camera, and whose ...
3
votes
0answers
233 views

No domain coded values on REST Arcgis 10.2

We have created a map service using version 10.2 from a map which all layers data source are point to an SDE connection service using DB2 database. However, the coded value domain not appear in the ...
3
votes
0answers
87 views

Septic Tank Location Data for the Southeastern United States

I am compiling a database of septic tank locations to make some rough estimates of the magnitude of return flow to the groundwater system for the Floridan aquifer system. Ideally I would have a ...
3
votes
0answers
178 views

Geodatabase Connection to Oracle Active Data Guard Standby

Thank you in advance for any help you can provide. ENVIRONMENT Database Server: Oracle 11.2.0.2.0 Single-Instance Database on Windows Server 2003 R2 Enterprise 64-bit Oracle Active Data Guard for ...
3
votes
0answers
119 views

How to determine and send alert SMS for next bus stop in a GPS tracking system?

In my gps tracking system (PHP/MySql) I have got 5 Stops for a vehicle. Whenever the bus reaches stop 1, the passengers at stop 2 should get an SMS alert. And in the same way for the sops followed ...

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