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Search found 359 results on 15 pages for 'spatial subdivision'.

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• How to determine the radius and center of a circle when only three noncollinear points are known?

  - by Bob

  I'm working on a C# program that deals with Oracle Spatial geometry. When circle data is stored in a geometry field only three non-collinear points are stored to represent the circle. The problem is that I need to use this data on a Google Maps web page and need the center point and radius of the circle (since my circle drawing function uses that…

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• SQL Server - stored procedure suddenly become slow

  - by Barguast

  I have written a stored procedure that, yesterday, typically completed in under a second. Today, it takes about 18 seconds. I ran into the problem yesterday as well, and it seemed to be solved by DROPing and re-CREATEing the stored procedure. Today, that trick doesn't appear to be working. :( Interestingly, if I copy the body of the stored…

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• Performance of Multiple Joins

  - by geeko

  Greetings Overflowers, I need to query against objects with many/complex spacial conditions. In relational databases that is translated to many joins (possibly 10+). I'm new to this business and wondering whether to go with MS SQL Server 2008 R2 or Oracle 11g or document-based solutions such as RavenDB or simply go with some spacial…

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• How can I split a LINESTRING into two LINESTRINGs at a given point?

  - by sabbour

  Hello, I'm trying to write a function that will split a LINESTRING into two LINESTRINGs given the split point. What I'm trying to achieve is a function that given a LINESTRING and a distance, it will return N LINESTRINGS for the original linestring splitted at multiples of that distance. This is what I have so far (I'm using SQL…

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• Neo4j Windows Plugin Installation desktop V2.M06

  - by user2904850

  I have downloaded and installed the latest Window V2 Community M06 build of Neo4j on a windows 7 64 bit machine (I have tried the 32bit and 64 bit installs). Installation proceeds without and problems and the system runs normally but there is no /plugins directory (on both versions):- \Program Files (x86)\Neo4j Community\…

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• org.hibernate.MappingException: No Dialect mapping for JDBC type: 2002

  - by Moli

  Hi at all, I'm having a issue trying to get working a JPA nativeQuery. I'm having a org.hibernate.MappingException: No Dialect mapping for JDBC type: 2002 when a try to do a nativeQuery and get a geometry field type. I use oracle and org.hibernatespatial.oracle.OracleSpatial10gDialect. The geom fields is mapped as: …

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• distance between two points across land using sql server

  - by dpwb

  I am looking to calculate the shortest distance between two points inside SQL Server 2008 taking into account land mass only. I have used the geography data type along with STDistance() to work out point x distance to point y as the crow flies, however this sometimes crosses the sea which i am trying to avoid. I…

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• Is there a function in mysql to get the MBR(Minimal Bounding Rectangles) of Geometry?

  - by fallhunter

  I found that some result of MBRContains(g1,g2) and other functions seems not right to me. and I want to find out why. how to see the mbr?

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• Calculating distance from latitude, longitude and height using a geocentric co-ordinate system

  - by Sarge

  I've implemented this method in Javascript and I'm roughly 2.5% out and I'd like to understand why. My input data is an array of points represented as latitude, longitude and the height above the WGS84 ellipsoid. These points are taken from data collected from a wrist-mounted GPS device during a marathon race. My…

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• Importing ShapeFiles into Oracle XE

  - by WeeJames

  Hi, I'm looking to import one of the Shapefiles supplied with the Ordnance Survey Boundary-Line opensource set into Oracle XE. http://data.gov.uk/dataset/os-boundary-line Unfortunately I'm completely unsure how to go about this, despite much Googling. Anyone got any pointers or tips or a link to a guide? …

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• How to very efficiently assign lat/long to city boundary described by shape ?

  - by watcherFR

  I have a huge shapefile of 36.000 non-overlapping polygones (city boundaries). I want to easily determine the polygone into which a given lat/long falls. What would the best way given that it must be extremely computationaly efficient ? I was thinking of creating a lookup table (tilex,tiley,polygone_id)…

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• How to use an adjacency matrix to determine which rows to 'pass' to a function in r?

  - by dubhousing

  New to R, and I have a long-ish question: I have a shapefile/map, and I'm aiming to calculate a certain index for every polygon in that map, based on attributes of that polygon and each polygon that neighbors it. I have an adjacency matrix -- which I think is the same as a "1st-order queen contiguity…

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• ShapeFile with Z Co-ordinates

  - by ace_mccloud

  I have 3 shapefiles, two of them wihtout the Z Co-ordinates elevation but 1 of them has a Z co-ordinate elevation. I can load two ShapeFiles into my SQL Server Database which does not have Z Co-ordinates. But I am having issue loading the Z Co-ordinate file into the database. I have been reading…

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• Does a good programmer need to have good spatial sense?

  - by lisa1234

  Do you need to have good spatial sense to be a good programmer? I have next to nothing of it (I think it has to do with the differing vision of my eyes). I've already coded quite little things but wonder if this interferes with the ability to 'imagine' the assembly of the code in case of a…

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• Neue Spezialisierung, neues Glück!

  - by A&C Redaktion

  Spektakuläre News aus der Welt der Spezialisierungen: Das Oracle PartnerNetwork (OPN) bietet künftig eine Spezialisierung für Oracle Spatial. Bekannt gegeben wurde dies kürzlich auf der Location Intelligence and Oracle Spatial User Conference 2012 in Washington. Bei Oracle Spacial handelt…

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• Neue Spezialisierung, neues Glück!

  - by A&C Redaktion

  Spektakuläre News aus der Welt der Spezialisierungen: Das Oracle PartnerNetwork (OPN) bietet künftig eine Spezialisierung für Oracle Spatial. Bekannt gegeben wurde dies kürzlich auf der Location Intelligence and Oracle Spatial User Conference 2012 in Washington. Bei Oracle Spacial handelt…

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• Is there an extensible SQL like query language that is safe for exposing via a public API?

  - by Lokkju

  I want to expose some spatial (and a few non-spatial) datasets via a public API. The backend store will either be PostgreSQL/PostGIS, sqlite/spatialite, or CouchDB/GeoCouch. My goal is to find a some, preferably standard, way to allow people to make complex spatial queries against the…

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• Microsoft TechEd 2010 - Day 3 @ Bangalore

  - by sathya

  Microsoft TechEd 2010 - Day 3 @ Bangalore Sorry for my delayed post on day 3 because I had to travel from Blore to Chennai So I couldnt write for the past two days. On day 3 as usual we had lot of simultaneous tracks on various sessions. This day I choose the Your Data, Our Platform…

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• The need for user-defined index types

  - by Greg Low

  Since the removal of the 8KB limit on serialization, the ability to define new data types using SQL CLR integration is now almost at a usable level, apart from one key omission: indexes. We have no ability to create our own types of index to support our data types. As a good example…

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• T-SQL Tuesday #006 Round-up!

  - by Mike C

  T-SQL Tuesday this month was all about LOB (large object) data. Thanks to all the great bloggers out there who participated! The participants this month posted some very impressive articles with information running the gamut from Reporting Services to SQL Server spatial data types…

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• Shared Datasets in SQL Server 2008 R2

  This article leverages the examples and concepts explained in the Part I through Part IV of the spatial data series which develops a "BI-Satellite" app. Overview In the spatial data series we ... [Read Full Article]

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• Passing a variable to javascript via a link.

  - by Jon

  My website has a javascript variable (addselectedsubdivision) that loads a neighborhood name from a box on the left to a box on the right. I was hoping I could build a link and then us PHP to add the subdivision letter, neighborhood, and city so that when you click on the link it…

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• Models with more than one mesh in JMonkeyEngine

  - by Andrea Tucci

  I’m a new jmonkey engine developer and I’m beginning to import models. I tried to import simple models and no problems appeared, but when I export some obj models having more than one mesh in the OgreXML format, Blender saves multiple meshes with their own materials (e.g. one mesh…

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• In terms of SEO, is it better to have a URL broken down by folder, or with dashed names?

  - by VictorKilo

  I am creating a friendly url interpreter for my website. I have read dozens of similar topics on this site, but none that seem to address my particular situation. What I want to know is if it's better to have: A well broken down URL where each category is represented by a…

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• SQL analytical mash-ups deliver real-time WOW! for big data

  - by KLaker

  One of the overlooked capabilities of SQL as an analysis engine, because we all just take it for granted, is that you can mix and match analytical features to create some amazing mash-ups. As we move into the exciting world of big data these mash-ups can really deliver those…

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