I need to put together a small brief about the weaknesses behind limiting content to specific countries based on IP address. Besides using proxy server located in another country, can you think of another way to circumvent such a system? ...
Hi, Do you know some utility or a web site where I can give US city,state and radial distance in miles as input and it would return me all the cities within that radius? Thanks! ...
We want to use GML in our application; It is a GIS based application which simulates the real word objects (i.e. Pipes, Roads, etc) in a virtual reality environment. Currently we draw and store the geometry in AutoCAD DWGs but in future we want to change the Database. I really need to find the answers of these questions. 1- Is GML prope...
I need geography data for new website. Data required is States (With names and standard abbreviations) ZipCode (List of zip code with all available data like where zipcode belongs to) What would be my best source to get this data? Any help is appreciated. ...
Hello! In PHP, I have the following code for calculating the distance between two locations: <?php function distance($lat1, $long1, $lat2, $long2) { // DEGREE TO RADIAN $latitude1 = $lat1/180*pi(); $longitude1 = $long1/180*pi(); $latitude2 = $lat2/180*pi(); $longitude2 = $long2/180*pi(); // FORMULA: e = ARCCOS (...
So I'm writing a Java app, and I've got an ESRI Shapefile which contains the borders of all the U.S. states. What I need is to be able to determine whether any given lat/lon point is within a specified distance from ANY state border line - i.e., I will not be specifying a particular border line, just need to see whether the point is clo...
Last week i searched for good free or opensource solutions and component for GIS (Geographical Information Systems) I founded some system but no one fill my requirements SharpMap is very buggy software Gmap.net is very slow MapWindow have a very complex structure and is very buggy. I founded uDIG but is in java, i need a solution i...
hi there, today i ran into a possible size limitation of geography type Linestrings within Sql Server 2008. when i create a Linestring with STGeomFromText that contains 567 points containing Long,Lat and Z coordinates, everything works fine. However, if i add one more point to the linestring i get an ArgumentException 24200: The speci...
raster1 {{0,1},{1,1}} raster2 {{1,1},{0,0}} hi can you explain me how the Ordered Weighted Average method works given the above two rasters step-by-step? thanks ...
I am looking for an implementation of MySql and Geographic layers (features\rasters), how does it work for you? which ORM \ dataaccess you are using? how do you write the geo-queries? as sql or in code ...
What kind of work has been done to determine whether a specific string pertains to a geographical location? For example: 'troy, ny' 'austin, texas' 'hotels in las vegas, nv' I guess what I'm sort of expecting is a statistical approach that gives a degree of confidence that the first two are locations. The last one would probably req...
There is any geocoding/routing service which runs on Google App Engine? (besides the Google Maps API) ...
As a new entrant into the job market, I've been looking through Authentic Jobs, SO Job Board, Craigslist, etc, and I've noticed that 75% of the postings are in San Francisco and New York. Now bear with me, this is a real question: What tangible benefits does a company receive by being in a certain "well known" city beyond "reputation by...
Say I have an arbitrary set of latitude and longitude pairs representing points on some simple, closed curve. In Cartesian space I could easily calculate the area enclosed by such a curve using Green's Theorem. What is the analogous approach to calculating the area on the surface of a sphere? I guess what I am after is (even some appr...
hi, i have .las (lidar data) file, now i wanted to know the size of it, for example how long it's width and height in kilometers... how is it possible to retrieve these kind of info? thanks a lot!!! ...
I have a set of latitudes and longitudes of locations. How to find distance from one location in the set to another? Is there a formula? ...
Hello, I've been unsuccessful in trying to find a US metropolitan area (e.x. San Francisco Bay Area, South Bay, The Berkshires, Upstate New York, etc.) database that is defined by cities. Does anyone know if such a thing exists? Wikipedia has a list of "Intrastate Regions" here: http://en.wikipedia.org/w/index.php?title=List_of_regio...
I am trying to use Nhibernate with the Sql 2008 Geography type and am having difficulty. I am using Fluent Nhibernate to configure which I am fairly new to so that may be the problem as well. First, the class I am trying to persist looks something like: public class LocationLog : FluentNHibernate.Data.Entity { public virtual new int...
I have a local database with some data of type geography in it. I tried to use export wizard to copy the table to the target server, but get the error "Unknown coversion..". SSIS-conversion file: C:\Programme\Microsoft SQL Server\100\DTS\binn\DtwTypeConversion.xml. Is there an easy way to gert this data over to the target server? ...
Do you know where I can get a free database on major cities of the world? Something along the lines of http://geodatasource.com/world-major-cities.html but $400 cheaper. ...