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.

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Convert a decimal degree to meters from the MySQL Spatial GLength

The MySQL Spatial function GLength returns the distance between two points, this distance is in the same unit from the projection. Since I'm using the WGS84 (SRID:4326) the answer will be with ...
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258 views

Check if a point is near a linestring with MySQL Spatial Extension (untrustable)

I have to discover if a given point is at least 500 meters (ou other distance) from a route line that exist in my database recorded using the MySQL Spatial. I see there is no similar function in ...
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408 views

How to set appropriate spatial index for a feature class in Oracle?

I wanted to ask is there any known method how to set spatial index for my feature class in Oracle. I am working with ESRI 10.1 and I have various feature classes covering the whole area of my country ...
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62 views

Are .shp files coordinates in a certain direction?

I'm working on a project where I'm importing a .shp file into SQL Server. I'm using the Catfood.dll and I'm wondering if each point in the polygon are sequential (going in the same direction)?
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Publish ESRI Feature Services from spatial view on ArcGIS Server 10.1

I have a feature class layer and a handful of non spatial plain tables in a 10.1 SDE geodatabase on MS SQL Server. What I want to achieve is to publish a feature service from ArcGIS Server so as for ...
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Should states/provinces be stored as geographic or geometric data types?

While reading the GeoDjango documentation, they advise using geometric rather than the geographic data type when storing values that are on a continental scale. The Canadian province of Ontario, for ...
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60 views

Why is my linestring not valid ? was recorded from GPX file

I have a linestring that was built from points from GPX file. I've insert it to sql as geometry and when I try to run funcs on it (like STStartPoint ) I get error that line isn't valid and I need to ...
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266 views

Where can I get documentation for Netezza Spatial Functions

I am looking for some documentation or manual or reference guide for Netezza Spatial Functions. Any idea where can I get the same. Thank you. Dharmesh
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Issue in Configuring Map Server Demo App

I am trying to use map server to display an indoor map of a building in a android application which i am about to develop. I setup the map server according to it's tutorial. I configured the files in ...
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69 views

Working with ambiguous AddGeometryColumn functions

I'm using PostGIS to add geometry columns to tables, but keep receiving the error: ERROR: function addgeometrycolumn(character varying, character varying, integer, character varying, integer) is not ...
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1answer
147 views

Does NASA DEM contain objects?

Following an answer to my previous question I am planning to work with NASA ASTER GDEM global dataset. I am trying to download it according to instructions given here for a couple of days now. ...
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251 views

Basics about Spatial Indexes

I was asking on a forum if it could be a good idea to create spatial indexes on subsets of a table when your application display on map only those subsets and never the entire table. I was asking ...
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58 views

How to find within a geodatabase from the catalog window

I have a geodatabase containing hundreds of feature classes that I want to be able to search within so that I know which feature class to load. All the feature classes come from different data ...
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What is the difference between node and vertex in GIS?

I know it is a stupid question, but to understand the subject you have to know the basics. In graph theory the term of node and vertex are equivalent, but sometimes in the GIS world the nodes and ...
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98 views

Polygon not a valid geography instance

I am trying to create and insert data from ESRI shape files. This is one of the many features in the shape file, you can copy paste it and try it yourself: DECLARE @g geography; SET @g = ...
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2answers
898 views

Which geodatabase type is most appropriate for both open source and ESRI use?

Main Question: Is there a geodatabase type that seamlessly works with both ESRI and open source products? Details: My company currently passes around geodata in various vector and raster file ...
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89 views

Design a routing system

I am trying to develop an application, firstly web, later mobile, that builds a route based on points of interest, basically it should show the route and the points of interest and when the user ...
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117 views

copying and pasting files - geodatabase

I have been sent a zipped folder containing files in a geodatabase format. To view them in ArcMap I've created a new file outside ArcCatalog with the extension .gdb and copied the unzipped files into ...
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892 views

Is there a way to connect to PostgreSQL in ArcCatalog without SDE? [duplicate]

Is there a way to connect to PostgreSQL in ArcCatalog without SDE? I came across this post from 2011 that suggested using zigGIS but I can’t find a working link to the program. A little background: ...
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1answer
155 views

Change the Default geodatabase in ArcGIS 10?

In a multi-user environment I have a need to be able to configure ArcGIS so that it uses an SDE connection as the default geodatabase instead of the Default.gdb in each users' profile. What is the ...
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145 views

Merge Multipart Feature Line

I'd try to merge multipart feature line, but didn't work. would you please teach me how to merge multipart feature line? I work in version environmental and geometry network. Regards,
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2answers
732 views

How to determine lock on file geodatabase?

I'm trying to delete a file geodatabase through Windows Explorer but I get the error message: The action can't be completed because the folder or file in it is open in another program. Close the ...
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2answers
102 views

Merge two geodatabases with identical structure

I'm using an ArcGIS addon which stores all created data (shapes and tables) in a gdb. The addon is made for single user use but to safe time I want to split the work with someone else. After that I ...
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1answer
77 views

Schema for offline map editing and pass to production environment

I'm working with QuantumGIs and PostgreSQL/Postgis. So when I edit the layers, the changes are reflected on the DB. The thing is I want to do some "offline" editing before committing the changes to ...
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58 views

Solve Mysql Spatial error

Converting shp2mysql will leads an null value in geom filed. how to rectify the the problem. shp2mysql -s 32643 landuse landuse LIS >landuse.sql
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1k views

How to import ArcGIS 10.1 File geodatabase to MS SQL Server 2012?

I would like to import my File Geodatabase from ArcGIS 10.1 into MS SQL Server 2012. I have never done it before, so I expect to do the import the same way as import data from excel table. Problem ...
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80 views

Correlation and terrain databases [duplicate]

I would like to know what kind of computation I could perform on a terrain database. I'm making terrain for VBS2 from raw data (shp files and DTM Elevation files) and then I'd like to be able to check ...
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100 views

SpatialRefSys as foreign key

Using the working stuff reported here, I've written the following django model: from django.contrib.gis.models import SpatialRefSys class LandCover(models.Model): shp_name = ...
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Determining the SRID of a dataset in PostGIS [duplicate]

Sometimes the dataset provides some information about its projection. For example, it can mention Horizontal_Datum_Name: North American Datum of 1983, Ellipsoid_Name: GRS1980, ...
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1answer
42 views

Importing labels for check in/out from an SDE to file geodatabase

I am working on a large project where I am using the ArcMap 10 'distributed geodatabase' feature to check out a file geodatabase from our SDE file. I have tried several ways to avoid having to ...
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1answer
762 views

Which one is better ?SQL server 2012 or Oracle 11g

I want to learn a database server, SQL server 2012 or Oracle 11g . I surf in the internet to compare SQL server and Oracle for spatial data and found good websites such as gisboston.it was very ...
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1answer
475 views

Problem inserting new features to file geodatabase feature class using ArcObjects 10 SDK

I'm trying to add new feature to file GDB feature class and keep getting this error: Objects in this class cannot be updated outside an edit session. Feature class has attachments enabled (exists ...
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101 views

How to Create database using OGC compliant geometries and Custom type Geometries?

I am interested in storing geometry attributes in a PostGis database, so that it would be OGC compliant, along with OGC compliant geometry types like point,line, linestring, etc. I also wanted to ...
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Spatialite as a DBMS-server with GeoDjango?

I would like to add a spatial component to my Django application. I turned out to GeoDjango immediatly. I am wondering now if spatialite could be used as DBMS-server for an application in Prod. Grosso ...
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3answers
143 views

Copying schema of Postgis or Spatialite DB to blank one

I want to copy a Postgis or Spatialite DB sctructure (features, tables) to a blank DB. In ArcGIS i can easily handle it by using XML Workspace Document. Fisrtly extact it from a Geodatabase and than ...
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1answer
125 views

Join feature classes from two ArcSDE geodatabases with same schema?

I am working with two ArcSDE geodatabases -- one for test, one for production. They both have the same schema. I recalculated an attribute in the test environment and wanted to push that to ...
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1answer
417 views

Setting geometry types importing to PostGIS with OGR

I'm using ogr2ogr to import data into a PostGIS database. Each dataset I need to import has (theoretically) the same exact data structure, but it appears that they are not the same geometry types. ...
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1answer
936 views

Why can't I access a table in a personal geodatabase (.mdb) with arcpy after installing 64-bit geoprocessing?

I wrote and ran a simple script last year - it cycled through some line features, buffered them and then intersected with some other lines - it all worked fine. I'm now trying to tweak the file to ...
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1answer
129 views

Is there any way to view maps in “perspective” with ArcGIS (ArcMap do not)?

I need to work with ArcGis by the amount of data that I use and the answers I need, but would like to see my maps in perspective and I can't find a way. Does anyone knows how to do it?
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4answers
1k views

Where can I find base data shapefiles for whole US?

I am looking for the base layers for whole U.S. - roads, hydrological lines etc with flexibilities of changing symbology and labels. TIGER is a good source but it is at county level. I am running on ...
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1answer
75 views

point of intersection issues

I have a table containing a set of points of intersections. Most of the roads intersects whith just one road BUT i have some roads which intersects with two, therefore three different point of ...
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236 views

Which Geodatabase supports SQL and is easily portable?

I want to choose the geodatabase type, which could be: permits direct sql queries. easily portable, because the app would installed in one computer. I know that the personal geodatabase is a good ...
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2answers
295 views

PostGIS stored procedures

I am wondering if there are open source applications that make extensive uses of the special functions (the ST_* stored procedures) provided by PostGIS? I found many apps that support storing map data ...
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2answers
369 views

How to create something similar to GDB in QGIS?

I used to work with ArcGIS. There I had geodatabases in which I could store several shapefiles with defined layer styles. Is there a way to do something similar with QGIS? The background is: we are ...
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1answer
411 views

Routing with multiple points

I am using postgreSQL, postGIS and pgrouting. Now I am really confused on how am I going to find the shortest path between multiple points. I know how to find it between two points through dijkstra ...
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4answers
315 views

What Application for Vector and Cartesian Coordinate System

Goal: Visualize a picture in SQL server 2012 spatial data based on geometry Problem: In order to display a vector picture I need to retrieve X, Y coordinate (cartesian coordinate system) and ...
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What kind of unit of measurement for scale does SQL Server 2012 Spatial use?

What kind of unit of measurement for scale does SQL Server 2012 Spatial use?
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866 views

mulitlinestring to linestring

I am using postgres with postgis and I have a set of points which I would like to interpolate with a set of lines. Now my problem is that the set of lines are of type multilinestring. Is there a ...
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127 views

How to Retrieve X and Y from a papermap or gif picture

Goal: Visualize a subway map in SQL server 2012 spatial data based on the map of the subway. The map shall use geometry, traffic rail road as line object, station as point object and zon as polygon ...
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1answer
107 views

St_buffer width issues

I am using postgres with postgis for spatial data and ArcGIS for visualisation. I am really confused regarding what units the st buffer function uses because when I insert just the value 1 as ...