Using the latest version of Subsonic (3.0.3) it doesnt appear to me that the geometry or geography data types are implemented as of October 09. My questions are: if and when is this support likely to be added? does anyone have a workaround to support operations on simple geography types at the DAL level? All I really care about at ...
Hey Folks, Where can i find (free/not-free) database of cities neighborhoods for MySQL ? Interested in US only areas. Any recommendations? The database would help to identify location by zipcode. I`ve already got database showing city and state. But i need to find neighborhoods around. I saw good example on site called http://www.ood...
I know this is a total newbie question, but I happen to be a total newbie when it comes to KML. I am working on a GIS project using KML and I keep running into this multiple geometry issue. I want to programmatically determine when I need to encapsulate my <LineString /> points in a <MultiGeometry /> tag and when I don't. Is it when a...
Hi, My goal is to display various shapes(polygons, points, linestring) on google maps by using data entered into a Postgis database dynamically(i mean by that we can see modifications in the map in real time). I was looking for a way to do this that used the spatial structure already provided in postgis(already designating if shape is ...
I am already familiar with Silverlight programming but not have any experience with GIS. my role as silverlight developer is only to display existing GIS data. If you guys have any experience with arcGIS silverlight control & api, what else do you think I must learn to be able to use it. any learning reference could be helpful. thanks...
I have to start work on application for analysis of satellite imagery to identify some man made structure. I would like to use C or Java for this. For satellite I am planning to use Google Maps data. I have three questions here: What is best source for GIS data besides Google Maps/earth. Best language to write such an application con...
This is a question-loaded post from someone who is just getting started with BB development. Any guidance is much appreciated. How are map based BlackBerry apps such as Yelp and Google Map implemented? As with the web based version. Yelp for the BB allows you to search for restaurants & etc. based on on the current or specified loca...
Hi all, Is there a way to do spatial analysis (NOT just graphics) in SAS? What I really want is the ability to geographic queries like one can do in PostGIS or SpatialLite in PROC SQL. I asked this on the SAS-L list and got nothing. Thanks! ...
I'm in the processing of developing a GIS component for our product and I have the need to convert NAD83 to WGS84. Does anyone know of any Ruby libraries that are available that do this? Or experience with anything that might do this? I had previously done this using a library in .Net/C#, but so far I haven't had much luck tracking ...
I need to integrate WFS-T (Web Feature Service-Transactional) in my 3-tier .net application. Not sure about the best practice to do such task, so I would appreciate any help... ...
Hi, I wanted to create TINs from 3D points (about 7 million in every file) using qhull. can anyone suggest a place where i could probably see how to do this? thanks! ...
Hi! I am in need to display a map in a silverlight / asp.net application, and moreover I need to do this "offline", that is, on an intranet with no external internet access. Do you know any components which would allow me to display a navigable map and put overlay data over it? I tried the excellent Virtual Earth silverlight control fr...
Where do you have the most success getting your ArcGIS development questions answered? ESRI forums? Stack Overflow? Google? Mailing lists? Blog posts? ESRI documentation? I can usually get answers to my ASP.NET/Oracle/JavaScript/C# questions in short order, but questions about ESRI products and APIs are a different matter. Posts founde...
I'm working with a mapping application (worldwind) and trying to determine the minimum and maximum latitudes and longitudes that are currently displayed. I have access to the frustum, but I'm not sure how to account for the fact that the globe can have its heading and/or pitch changed. Any help on this problem would be appreciated. than...
I'm new using mapinfo and I am going to work a lot with it. I haven't been able to find a good forum, making it impossible to get community driven assistance. I wish any of you could tell me if there is a good place to find mapinfo related help. Thanks in advance. ...
Hi, I am trying to develop some simple location logic in the server-side portion of a java servlet-based webapp. There are really just two operations that I'm interested in: Given a start point (lat/long) s1, distance d, and search point (also lat/long) s2, determine if the s2 is within d distance from s1. Given two points (lat/long),...
I'm using C# to pull spatial data from a sql server 2008 database. I'm then trying to perform operations on that data, but to start... I want to be able to visualize it. That is, I would like to create an image of the data, preferably in jpg format. I thought that I might do it by hand, but that is proving more challenging than I ha...
I have a SQL Server table with hundreds of thousands of geometry type parcels. I have made indexes on them trying different combinations of density and objects per cell settings. So far I'm settiling for LOW, LOW, MEDIUM, MEDIUM and 16 objects per cell and I made a SP that sets the bounding box according to the extents of the entities in...
Hi all I have a scenario, where I have x million longitude latitude points. When a new long/lat point is added I want to know efficiently which other points are within a user configured distance parameter, so I can add them to a list. got anything better than bounding boxes? I would love to see algorithms, references and a few implem...
I have detailed US county maps, from the TIGER LINE data sets. How might I sample, smooth, or degrade the data so that I get straighter, more boxy, less "noisy" shapes to represent the geographical features -- in this case just county boundaries and state lines, but maybe also in the general case? The sampling could happen at renderin...