spatial Questions
1
Solved
I have around 40,000 polygons stored as geometry in my table. Now I want to create spatial index on that geometry column. While creating spatial Index it is asking me for Bounding box values. Can y...
Permission asked 7/5, 2013 at 3:30
1
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I'm trying to figure out my way on how to perform (so easy in GIS) operations in R.
Let's take some example polygon data set from spdep package
library("spdep")
c <- readShapePoly(system.file(...
2
Solved
I have a strange behavior of MySQL spatial search.
I have created a polygon in a GEOM field (Portugal bounds), then I am trying to find a point inside -- it is found ok.
The next try is to find ...
3
Solved
I'm having some fun trying to pick a decent SQL Server 2008 spatial index setup for a data set I am dealing with.
The dataset is polygons, representing contours over the whole globe. There are 106...
Hackworth asked 27/5, 2010 at 12:14
1
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I am trying to create a spatial network from a shapefile (representing street centrelines) imported into an Oracle DB with FME Desktop. The 'CENTRELINES' spatial object contains a GEOM column that ...
Bechuanaland asked 26/3, 2013 at 23:56
2
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I need to replace the NA's in the raster object (r) from the example below.
library(raster)
filename <- system.file("external/test.grd", package="raster")
r <- raster(filename)
I also trie...
2
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I have a matrix data with spatial coordinates and one variable. The spatial resolution is 1000 meters.
> str(dat1)
> List of 3
> $ x: num [1:710] 302340 303340 304340 305340 306340 ...
&g...
2
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I need to remove the box frame around the figure in R package "raster", but I cannot figure out which argument I should change. The example is as follows:
library(raster)
r <- raster(nrows=10,...
3
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Application Version: JBoss 7.0.0, Oracle 11g (ojdbc6.jar) and JDK 6 version
I have a problem when I am trying to insert the value for CLOB Data type using CLOB.createTemporary function, getting t...
2
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My goal is to use mysql POINT(lat,long) to find nearby entities in the database. I'm trying to do something like in the bottom of this tutorial http://www.scribd.com/doc/2569355/Geo-Distance-Search...
Hegarty asked 11/7, 2012 at 15:44
4
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I have two SpatialPolygonsDataFrame files: dat1, dat2
extent(dat1)
class : Extent
xmin : -180
xmax : 180
ymin : -90
ymax : 90
extent(dat2)
class : Extent
xmin : -120.0014
xmax : -109.9997...
1
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When measuring the distance between two locations using the DbGeography.Distance(otherLocation) what is the unit of the distance?
Even the msdn information and the intellisense fails to specify th...
Tot asked 18/12, 2012 at 13:33
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I'm trying to access the DbGreography datatypes in my solution.
I've installed EF5 via nuget. I've referenced System.Data.Entity in which the spatial types are supposed to reside.
However, There do...
Neurosis asked 17/12, 2012 at 8:0
1
I've got a point cloud, and would like to detect occurrences of certain patterns of points in my code.
Let's say I have 1000 points in 3d space, and I want to detect all instances of 3 points whic...
Barbed asked 2/3, 2011 at 18:38
3
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I have a solution that uses spatial data to represent a cluster of points on a map. I have the need to used the coordinates that represent the extents of a cluster to find the minimum bounding rect...
1
I've got a table that contains a POINT column. I was wondering whether it is possible to insert a point using the Inserts tab in MySQL Workbench. I've tried a number of different combinations to no...
Vanover asked 6/5, 2012 at 16:52
1
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I have a bunch of data which I've plotted at the county level, without borders. I'd like to add in state boundaries. I have a state shapefile (polygons), but spplot doesn't seem to have any way to ...
1
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Package sp provides a number of classes for different spatial concepts (points, lines, polygons). For some classes, accessing feature coordinates is straightforward, e.g. SpatialLines. All examples...
1
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I would like to combine Voronoi polygons with map, in order to use this later for spatial analysis. I have number of points and shapefile that i want to combine and then save as shapefile/spatial p...
3
Im building an application where vehicles coordinates are being logged by GPS. I want to implement a couple of features to start with, such as:
realtime tracking of vehicles
history tracking of v...
Centroclinal asked 1/7, 2010 at 9:46
2
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Given a k-dimensional continuous (euclidean) space filled with rather unpredictably moving/growing/shrinking hyperspheres I need to repeatedly find the hypersphere whose surface is nearest to a gi...
Soulless asked 4/6, 2012 at 9:7
2
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I have a database table which currently holds geometric data in SRID 27700 (British National Grid). While retrieving the data however I need to transform it to SRID 4326 (WGS84). Is there any way t...
Valuation asked 8/5, 2012 at 15:53
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This is a follow-up to this question. I have now managed to plot variograms of the data using the answers given to that question. The code I am using (where im is a variable containing the dput dat...
1
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Summary: I have a raster dataset which contains NA values, and want to calculate a variogram of it, ignoring the NAs. How can I do this?
I have an image which I have loaded into R using the readGD...
Highclass asked 24/5, 2012 at 10:53
2
Solved
In Visual Studio 2010, my solution was using .NET 4.2 (Entity Framework June 2011 CTP) so I could use spatial types in Entity Framework. When I upgraded to Visual Studio 11 Beta, it wouldn't build ...
Acus asked 20/3, 2012 at 18:11
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