Spatial database is a database that is optimized to store and query data that is related to objects in space, including points, lines and polygons.

learn more… | top users | synonyms (1)

5
votes
1answer
153 views

Grid Analysis from samples data

I'm trying to analyze set of samples into vector grids in order to generate average data in corresponding grid.I'm working with 50m separated grids but the size of grid may change over time.That's why ...
0
votes
2answers
194 views

Can I incorporate an existing DBF file with coordinates for Tiff tiles into geodatabase like spatialite?

I have 285 Tiff files that make up the 1:10000 OS map of Norhtern Ireland. I am having problems running QGIS when I try to load all 285 tiff files in for base maps (I think the memory on computer is ...
1
vote
0answers
339 views

How do I find the pgAdmin connection parameters?

I need to create a connection from arcmap to pgadmin using a python module because of an arcpy script, but I am unsure of how to get the pgadmin connection parameters. I think it may be some kind of ...
3
votes
0answers
68 views

Search in Bounding Boxes and Locations

Description of the problem (what I need): I have a set of bounding boxes (maybe the actual data is a location[longitude, latitude] in which case the bounding box will have identical corners). I have ...
0
votes
2answers
229 views

ArcGIS: Summarised Inside Join with Attribute Criteria

I have a situation in which I need to find how many points lie within a polygon, this would be quite simple with a summarized inside join from points to polygons except for the fact that the points ...
4
votes
1answer
304 views

Is it possible to run an arcpy execute SQL method without connecting to any database or server?

I want to simply process a layer by writing a tool script in a toolbox without having to connect any database, so I think I may have to set up a workspace environment in ArcMap, but I'm not sure if I ...
8
votes
5answers
279 views

Is there a climatic geo portal for every point in the world?

I'm looking for a geo portal or climate database that provides me with the daily climatic information like temperature, precipitation and humidity. Forecast data is not of my interest. I need ...
1
vote
0answers
150 views

What is the best way to create polygons on a map and download files associated with the polygon?

My client wants to build a tourist site and for that he wants a backoffice for the map and the ability to draw polygons on the map (that user can see). When the user clicks on a polygon, he gets a ...
1
vote
0answers
28 views

Creation of 3d terrain from real data [duplicate]

Possible Duplicate: 3d terrain from data in postgres I am pretty new to spatial database and 3D data. I have a project where i have to create a 3d terrain from data being taken by me by a ...
6
votes
1answer
229 views

Standard for storing human metadata in spatial databases

Is there an existing, standard, universal approach (and hopefully existing tools that support managing it) for storing geospatial metadata in non-ESRI spatial databases alongside (and therefore able ...
2
votes
2answers
308 views

projection issues from ArcGIS to Qgis

I am pretty new to ArcGIS and Qgis. I have loaded some geometry data in Qgis from my postgres database, then I have also loaded the same data in ArcGIS. Then from ArcGIS i have created a shapefile ...
6
votes
3answers
1k views

Insert points into SQL Server?

I am collecting X and Y values from a web service (Twitter) via a python script. In the long run, this will run over a period of months and I intend on stopping at around the 6 million point mark. ...
3
votes
1answer
596 views

Does MySQL only support bounding boxes calculations instead of the real polygon geometry?

Within our company we are deciding which DBMS we will use to store spatial data. IT wants MySQL with the Spatial extension because there is already knowledge about handling MySQL DB. We are doing ...
2
votes
1answer
769 views

3D Building Generator Tool

I am using ArcGIS desktop 10 and I would like to change a 2D polygon into 3D building. Does anyone have any idea from where I can download the 3D building generator tool for ArcGIS Desktop? I read ...
1
vote
1answer
408 views

Is the PostGIS Shapefile Import Manager able to upload to phpmyadmin or only pgadmin III?

After trying to import a shapefile into pgadmin III with no success I was wondering how to successfully upload it, but also if it is possible to upload to phpmyadmin instead. In any case, how exactly ...
3
votes
1answer
400 views

Why does AddGeometryColumn error using the libspatialite-2 DLL with pysqlite2?

What I'm trying to achieve is to create a geometry column of a point based on the latitude and longitude of that particular row in the already created table. Given the following code: ...
4
votes
1answer
98 views

Distributed versioning of geospatial data

I'm getting started on the design of a new system that would reconcile, merge, and synchronize changes made across numerous geospatial databases of common ancestry, on an ongoing basis. These ...
17
votes
2answers
385 views

Is there a standard data model for storing traffic volumes, layout, lanes, timing and phasing information?

I am at a crossroads where I want to store more than a scenarios worth of project data from a Synchro study, but do not want to keep this data in a series of text files. The data output by Synchro is ...
0
votes
1answer
264 views

Does a polygon in a layer intersect with another polygon in the same layer [closed]

I am a CS major with little experience in GIS. I am working on vector polygon overlay. Looking at GML and shapefile data, I realized that a map is made up of a large number of polygons. Does a polygon ...
6
votes
2answers
200 views

How to decide what type of GIS to use for my study project?

I'm a student and currently taking a self directed project course. In our assignment, we were given a bunch of shapefiles and the goal is to make a tool, which would display all the data based on ...
2
votes
1answer
161 views

Finding the Geometry within which a Point falls

I have the following query, which takes on average about 4 seconds. How might one improve the query such that the same response comes back faster? SELECT * FROM geometries g ORDER BY ...
8
votes
1answer
1k views

Creating table containing all filenames (and possibly metadata) in File Geodatabase?

I need to create a metadata-table for all files in a File Geodatabase or Spatial Database. It would be awesome if it were possible to automatically be updated with new filenames, and possibly even ...
3
votes
2answers
76 views

Where can I find spatial data on polar fish populations?

Where can I find spatial data on polar fish populations? I am looking specifically for polar cod, but any fish will do at this point in my project. I also need arctic ocean salinity, temperature, and ...
3
votes
1answer
373 views

Looking for GIS Data for Curitiba, Brazil?

I am wondering if anyone knows where to find building footprints, road network, transit, or environment feature data for Curitiba, Brazil. Thanks
18
votes
3answers
393 views

(When) should I use a GIS-enabled database?

I am a long-time programmer, new to GIS. I am trying to get a feel for the database aspects of GIS and I understand that there are some databases which are specialized for GIS use. Basically I am ...
5
votes
2answers
3k views

How to clip/export multiple selected vector layers in a map to extent of another raster/vector layer in ArcGIS?

Is there a way to clip/export selected vector layers (more than one) in a map to the extent of another raster/vector layer at a time?? in Arcgis or any other software. I am using Arcgis10. I am ...
12
votes
2answers
565 views

Need a spatial database that can be used by QGIS and R

I'm quite new to QGIS and I'm searching for a simple way to create a Database that allows me to use the tables in QGIS and R. I have a lot of data stored in Excel spreadsheets wich will be used for ...
0
votes
2answers
129 views

creating one tree to many observations in qgis

Looking to create a database for QGIS where each point represents a tree (with name attribute) and another table of observations about each tree over time. Ideally I can update tree location in QGIS ...
4
votes
4answers
519 views

How to test whether two countries are adjacent?

I have an interesting question: Is there a dataset by which I can use to test whether two countries are adjacent? For example, if inputs are Mexico and U.S., they are adjacent; if inputs are England ...
4
votes
1answer
1k views

Error creating a spatial database. ERROR : could not load library “/usr/pgsql-9.1/lib/rtpostgis-2.0.so”

I am running PostgreSQL 9.1 with Postgis 2.0 on Fedora 15. When trying to install the raster support, psql -d mydb -f rtpostgis.sql -v ON_ERROR_STOP=1 I get the following error ...
1
vote
2answers
2k views

Convert spatial Geographic data from sql server 2008 to Json

Is there any example to convert spatial data (point,line,polygon) stored as geographic in sql server 2008 into Json and display data using Arcgis Javascript Api 3.0.I have tried converting geographic ...
7
votes
2answers
4k views

Spatially enabled Postgres database

I am trying to create a spatially enabled PostGIS database. I am following the PostGIS documentation, http://postgis.net/docs/manual-1.5/ch02.html#id2648455. In the short version, i executed, ...
2
votes
1answer
762 views

MySQL GeoSpatial function for ST_Distance_Spheroid? Metric used in return Type of GLength?

Is there a ST_Distance_Sphere, ST_Distance_Spheroid equivalent function in MySQL's GeoSpatial Support? If not, any way to emulate this? What is the metric used in return type of ...
2
votes
1answer
101 views

What are the implications of changing the AutoCommitInterval on file geodatabase inserts?

All, I was wondering if anyone has any advice or "tales from the dark side" about changing the AutoCommitInterval property of the ITransactionsOptions interface? It's the sort of thing I generally ...
8
votes
6answers
4k views

How to get “.GDB” Esri File Geodatabase in QGIS for MAC OSX 10.6?

I understand there are programs like OSGeo4W that allow windows users to work with File Geodatabases, but is there something similar for Mac OSX?
12
votes
1answer
273 views

How do you organize your geodata?

A geodatabase doesn't provide much flexibility in organizing your data hierarchically. All feature sets live either at the top level of the database, or one level down in feature datasets. A feature ...
1
vote
2answers
62 views

2 Similar Queries Run at Vastly Different Speed in a Very Surprising Way

I have to be very careful here. Both queries are so similar that the only different is the area searched. What's surprising is the query that run on BIGGER AREA, and naturally yield MORE ROWS, is the ...
2
votes
1answer
571 views

How to speed up this simple MySQL points in the box query

MySQL doesn't have nearest neighbor search so. So I try to come up with a "distance" that's reasonable so the number of returned query is around 20-200. That way innodb doesn't have to compute ...
4
votes
3answers
482 views

Do you know of any project that stores features in a NoSQL database like Cassandra?

I'm a Master's student and software developer and I want to make a new contrib development based on NoSQL databases like Cassandra. Does anyone know any people, University or Research Group who works ...
3
votes
2answers
175 views

Is there any site which provide classified image download for soil,vegetation or water resources?

(its particularly for indian states,i need.....,but kindly quote if any other info you have) the raster data may also work for me in above aspects.
5
votes
1answer
135 views

Looking for open-source solution to show map with massive objects(3x3 polygon) on a web site

I don't have much experiance in GIS systems. I am developing a web site which need to show a map with 3m x 3m rectangles for a radius of about 400 meters.(about 58,000 polygons for one location) I ...
0
votes
0answers
317 views

MySQL SQL command to find points within a rectangle with spatial extension and index [duplicate]

Possible Duplicate: how to find 20 closest points efficiently How to find points, sort them based on closeness, and get 1-20, 21-40, etc. Efficiently using Myisam and mysql Actually I ...
1
vote
1answer
108 views

Algorithm to find distance of an uneven polygonal road

While working for my summer internship I have got a task to implement an algorithm to find the crosssecting points of two roads or more and then place that cross-section point a number and then find ...
7
votes
3answers
2k views

how to find 20 closest points efficiently

Say I want to find 20 closest business near me. My table structure is like this: BusinessID varchar(250) utf8_unicode_ci No None Browse distinct values Change Drop ...
3
votes
1answer
139 views

cannot check in related tables in arcpad 10

I'm using ArcPad Data Manager (ArcMap 10) to check in data in axf file. I can check in feature layers, but I can't check in related tables and the feature class parent of the related tables. I have ...
22
votes
7answers
762 views

GIS Software Choice for a small university research centre

I need to choose a GIS system for a small university research centre. We are handling a broad range of data, (for example, numerical tidal analyses, weather data, poverty, isolated economic activity, ...
4
votes
2answers
322 views

Calculating the space a feature class will use in ArcSDE?

Is it possible to get a good estimate on how much space a feature class will take once loaded into ArcSDE from how big they are in a FGDB? I have some feature classes in a FGDB, where some are a few ...
7
votes
3answers
5k views

How to export multiple featureclasses to shapefiles?

I have plenty features in a geodatabase. I need to save/export them into shapefiles, because my mate works with Manifold, which is not able to read geodatabases. Any Ideas? Click on every single layer ...
7
votes
2answers
4k views

QGIS supported databases?

Does anyone know if there is some kind of documentation on which database types that you can connect to in QGIS? I would also like to know if: Can I use the databes for read only or read & write. ...
8
votes
1answer
4k views

How to create a table from existing tables (applying new schemas) in postgis DB?

I have a table that is geospatially enabled; that contain world borders. I want to break it down to different schemas (global, europe etc..) . My thought is to use use something that looks like this: ...