19
votes
7answers
8k views

Options for displaying PostGIS vectors in OpenLayers

I am very new to web-mapping, so this question may be a little misguided. I want to have a very simple web interface using OpenLayers (or even Google Maps if that will be easier) which can display a ...
12
votes
9answers
3k views

What are the main research areas under development for GISc today?

Along the lines of the closed topic about a master thesis, I would like to propose you guys with a question that it is simple: What are the main areas under active research and development for GISc? ...
13
votes
6answers
899 views

What is the best way to visualize multiple large LIDAR tiles?

I want to load approximately 10 large LIDAR tiles for analysis. I have tried using ArcScene but it appears there is a limit on how much data ArcScene can handle at one time. Each tile is 65-90MB in ...
5
votes
5answers
7k views

How to convert coordinates from Gauss-Krueger to Longitude/Latitude?

I'm a newbie in the GIS world so please advise me :) In my .NET/C# project I need to show some shapes/points on the Bing Map. The problem is I have the Gauss-Krueger coordinates and need to convert ...
2
votes
3answers
9k views

How to calculate Raster Area per Polygon?

In ArcMap, I have a raster file that contains 6 classes of landcover and a shapefile that is the census data (OA boundaries and their population). I want the area of each class in each OA? For ...
3
votes
4answers
1k views

What are Limits on ArcScene and LiDAR?

I am trying to load anywhere from 5 to 10 LIDAR TINS into ArcScene. I am using ArcGIS Desktop Evaluation (student) 9.3.1. I just built a new computer with a AMD Phenom II X6 1090T six core processor, ...
7
votes
4answers
3k views

Anybody know any WMS clients for Android?

I am interested in finding a project (with source) for a WMS client for Android.
0
votes
1answer
133 views

Change order of added FeatureGraphicsLayer in GraphicsDataSet

I am adding two FeatureGraphicsLayer to a GraphicDataSet like so: graphicsFunctionality.GraphicsDataSet.Tables.Add(featGraphicsLayer); It looks like it puts the last one in on the very top of all ...
1
vote
1answer
1k views

How to convert from ITM ref to GPS ref ?

How can I convert from ITM ref (Israel new map) to GPS ref and from GPS ref to ITM ref? I need any C# sample code or formula for this. For example: 32.086156,34.769239 = 178364,665948 Or : ...
7
votes
3answers
11k views

How can I plot GPS coordinates on Google Map

What is the best way to plot GPS coordinates on a Google Map? Are there any tools that can do that (written in python specifically)?
3
votes
1answer
899 views

How do I load layer, shape or raster map files using the ESRI ArcGIS Silveright API?

Is there a way to use the silverlight API to load common maps formats off of my local machine?
3
votes
2answers
1k views

Is it possible to use more than two control point links when georeferencing CAD files in ArcMap?

I'm trying to georeference CAD to a building footprint in ArcMap 10 (although I've had this same problem in earlier versions). The problem is, it won't let me use more than two control point links, so ...
-3
votes
2answers
396 views

Can I get some recommendations for an Open Source Trouble Ticket system? [closed]

When I research trouble ticket systems a lot of them are for programming. I am interested in something more general purpose. Some things that would be a bonus would be: -Integrated with Drupal ...
2
votes
6answers
2k views

How can I connect to a PostGIS database from ArcCatalog 9.3 via ArcSDE?

I have a problem connecting to my postgis database via ArcSDE in Arc Catalog. When i want to establish connection to my database i get an error:
3
votes
3answers
2k views

IFeatureCursor.NextFeature not releasing memory

I've got a non recycling cursor retrieving features into a List<IFeature>. When I populate the list, I can see my memory usage climbing up. When I discard my list (or it goes out of scope), ...
4
votes
3answers
234 views

Organization in a GIS Shop

This question is about staying organized and current on all your to dos and project tasks. For me I am an avid user of GTD and a variety of online tools such as evernote, toodledo, and gmail. I ...
5
votes
1answer
223 views

When a class in an ArcGIS extension should be an ArcGIS class

Visual Studio templates provided by the ArcGIS SDK offer a "ArcGIS Class" which is a simple C# class that has the attributes Guid, ClassInterface, and ProgId before the class declaration. While adding ...
3
votes
1answer
913 views

Can esri ipad app consume web mapping service?

Can the ESRI app for the iPad consume regular web mapping services, or do I need to publish services for this app as Mobile project services?
3
votes
0answers
295 views

How do I Convert from LayerDescription.SelectionFeatures to GraphicsLayer?

How do I convert (in a clear and concise way) from ESRI.ArcGIS.ADF.ArcGISServer.LayerDescription.SelectionFeatures to ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicsLayer I want the selected ...
1
vote
2answers
451 views

CORS - HARN transformations - what is the most accurate method

This may not be an issue for many GIS-ers but has anyone else had experiences transforming from modern NAD83 (CORS) to HARN coordinates and vice versa? I realize the discrepancy might be something ...
9
votes
6answers
504 views

Resources for Calculating the Geometry In Oblique Photographs

Currently I am using supervisory classification algorithms to calculate the landuse within a certain image, the issue being the images are sourced from high oblique photography. I know the focal ...
4
votes
2answers
2k views

Is it possible to have pages in mapbook link to different data frames on 1 layout page in ArcMap?

I am trying to create a map series of approximately 80 sheets, but I need to have 2 sheets per layout page. Basically, I need to know if there is a way to have the pages in the map series go to ...
2
votes
1answer
182 views

Why i cannot see my globe service?

I want to explore it in ArcMap or in ArcExplorer but both cannot "see" it. For the other resources like map services everything is workikng well. I can add that the service is started and in a ...
20
votes
6answers
6k views

Should GDAL be set to produce GeoTIFF files with compression? Which algorithm should be used?

I have a folder of GIS data that consists mainly of GeoTIFF files. The whole set weighs in at about 1.2 GB. I noticed that if I pack the contents into a tarball, it smashes down to about 82 MB. I ...
4
votes
4answers
431 views

GIS scholarship sources

What are good sources to find GIS scholarships?
4
votes
5answers
647 views

Where can I find statistics on software development within the GIS industry?

I am trying to find some information, specifically poll results on platforms and languages used for GIS software solutions. I remember taking one but I cannot find the poll to see the results, it may ...
8
votes
1answer
808 views

How to apply a Majority filter in GRASS GIS?

I was wondering if someone could help me write a majority filter for GRASS GIS. I have this map (see below) which I need to run a filter over to make the red areas a bit more dominant. I know I can ...
8
votes
4answers
1k views

Queries returning very big datasets in PostGIS

I have a PostGIS query that will return several million rows: SELECT t1.id AS id1, t2.id AS id2, ABS(t1.mean_h - t2.mean_h) AS h_diff, ST_Distance(t1.the_geom, t2.the_geom) AS dist FROM ...
7
votes
3answers
613 views

How to get a list of adjacent lots to a road in ArcMAP and PostGIS/QGIS?

In the following map, I have: A line / road layer A parcel / lot layer The Task: Find and count the list of lots adjacent to the road with their types (parcel_type is a field in the parcel ...
4
votes
5answers
3k views

Problems merging DEMs or other raster datasets? Clipping Raster dataset to vector line?

I have two DEMs that I am going create a hillshade from, and ultimately want one hillshade clipped to a county boundary. I am running into a couple problems, though. When I try to merge the two ...
9
votes
3answers
489 views

Top unsung business benefits for GIS

One of the biggest criticisms of GIS professionals is typically that GIS is an underused technology and as such the professionals feel frustrated that they only get to use it in very limited ...
12
votes
5answers
502 views

List of desktop GIS FOSS case studies

I think we should create a list of best desktop GIS FOSS case studies. First of all this list will be useful to anyone who considers desktop GIS FOSS for a project as an viable alternative.
9
votes
5answers
4k views

How to get the envelope of all the features in a feature class in Arcmap?

I would like to get a single envelope of all the features in a feature class. Is there any way to do that in ArcMap?
9
votes
2answers
1k views

What are the implications of invalid geometries

I've imported some data in a Postgis database and some of the geometries are reported invalid (ST_IsValidReason reports self-intersection or ring self-intersection). The queries I am performing don't ...
7
votes
7answers
1k views

Examples of thematic mapping web services built with FOSS GIS

What are some current examples of web services serving thematic mapping based on free and open source software? The thematic mapping could be in the form of choropleth or point layers. It would be ...
2
votes
2answers
953 views

Showing a select or hightlighting a point feature in AGS using Javascript

How would you go about "selecting/hightlighting a feature" in the map control when a user clicks on a point in the map - all via ADF Javascript. I know it can be done server side with a selection ...
10
votes
8answers
21k views

Full list of ISO ALPHA-2 and ISO ALPHA-3 country codes

I'm searching for a full list of countries with their country codes. Like on this page (need full and valid): http://www.nationsonline.org/oneworld/country_code_list.htm Thanks.
31
votes
9answers
11k views

Open source methods for kriging?

I have a point dataset which I'd like to Krige, ideally using an open-source software package. If possible, I'd also like to choose the semi-variogram model during the process to improve the ...
4
votes
1answer
193 views

Is the ServerAction Method Required in a ImapServerCommandAction?

I am using an ESRI toolbar control buddied with a map control. I am using a command. Below is a simple example. My question is to clarify - having the ServerAction method is a requirement when you ...
1
vote
5answers
1k views

Is ArcGIS Desktop still affected by stacked toolbars bug (NIM003161) when opening MXD on multi-monitor configurations?

In ArcMap 9.3, we had issues with our toolbars always stacking up instead of remaining where they were placed. This was mainly an issue on dual monitor workstations and we would occasionally see the ...
4
votes
2answers
809 views

What are the key features of a web map?

In response to comments, I'll rephrase the question: We're building a web based mapping and data querying system. The data are at several different scales, and should be queryable at these scales. ...
11
votes
1answer
707 views

Bug in F******** spatial relation? (I'm not cussing)

I would expect ISpatialFilter.SpatialRelDescription to behave consistently with IRelationalOperator.Relation. However, when I run the code below, I get: Total features : 44368 Count1: 9 ...
13
votes
1answer
2k views

How to have a python script self terminate in ArcMap10?

I have tried sys.exit, but it doesn't seem to work in ArcMap. Anyone know how to do it?
2
votes
3answers
2k views

Redoing an ArcGIS Server post-install

I'd like to reconfigure an ArcGIS Server 10 Java implementation (single machine, Windows Server 2008 R2) and I plan to re-run the post-install. Complete: I do not need to save anything on the current ...
1
vote
2answers
471 views

Trouble accessing Sketchup Features to SKP Toolbar in ArcMap 9.3?

I am having trouble getting the Sketchup plugin to work in 9.3. I have installed plugin into the correct location, been able to locate the proper .dll, but when I add it, and scroll down to where it ...
1
vote
3answers
2k views

How to style OS VectorMap district data?

Following a question about ways to load OS VectorMap data, I have imported the data into ArcGIs, but now want to style it in a OS-map style. I have searched around, and found various bits of ...
8
votes
5answers
1k views

Will there be a Python API for ArcGIS Server?

It seems like an obvious next step given the big push towards Python in ArcGIS Desktop at 10.0. Are there any limitations of Python compared to javascript, flex, etc that would prevent ESRI from ...
0
votes
3answers
440 views

Need help understanding why gdal projections aren't giving me what I expect?

When using gdaltranslate and gdalwarp I specify the following transfomation (in for GCP's and translate, out for warp) +proj=lcc +lat_1=40.03333333333333 +lat_2=38.73333333333333 +lat_0=38 ...
2
votes
2answers
343 views

Using ArcSDE on an Oracle DB, how can I tell which users have permissions to a Feature Class

I created a new Feature Class, and I assigned some users SELECT privileges to that Feature Class. I want to look at the list of users that I have assigned privileges to, how do I do that? Updated ...
4
votes
5answers
2k views

How to re-project coordinates in a gml on-the-fly in Geoserver?

I am using Geoserver to get featureinfo, but sometimes I want to re-project the native SRS in the output gml. The request is a (WMS) "GetFeatureInfo" with INFO_FORMAT: application/vnd.ogc.gml. I am ...

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