Tagged Questions

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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0
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0answers
42 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 ...
8
votes
6answers
194 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: ...
4
votes
1answer
43 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 ...
4
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0answers
34 views

Spatial data visualization level of detail [migrated]

I have a 3D point cloud data set with different attributes that I visualize as points so far, and I want to have LOD based on distance from the set. I want to be able to have a generalized view from ...
1
vote
1answer
30 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,
4
votes
2answers
87 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 ...
3
votes
2answers
48 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 ...
0
votes
1answer
36 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 ...
1
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0answers
27 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
0
votes
1answer
157 views

How to import ArcGIS 10.1 File geodatabse to MS SQL Server 2012

Hello I´d like to import my File Geodatabase from ArcGIS 10.1 into MS SQL Server 2012. I´ve never do it before, so I expect to do the import same way as import data from excel table. Problem is ...
0
votes
1answer
40 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 ...
2
votes
1answer
53 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 = ...
1
vote
0answers
36 views

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, ...
0
votes
0answers
12 views

Units of Geometry & Geography data type [duplicate]

When you store data using the Geography data type (like in PostGIS), is it always in lon/lat in degree decimals? For the Geometry data type, what are the units used in the coordinate pairs? Can it ...
2
votes
1answer
26 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 ...
2
votes
0answers
206 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 ...
0
votes
1answer
109 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 ...
2
votes
2answers
51 views

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 ...
1
vote
3answers
77 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 ...
2
votes
1answer
67 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 ...
1
vote
0answers
100 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. ...
6
votes
1answer
215 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 ...
0
votes
1answer
40 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?
-1
votes
3answers
147 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 ...
2
votes
1answer
52 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 ...
4
votes
2answers
159 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 ...
4
votes
2answers
145 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 ...
7
votes
2answers
205 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 ...
3
votes
1answer
119 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 ...
3
votes
3answers
140 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 ...
0
votes
0answers
74 views

SqlGeography STArea for CW and CCW polygons

I'm using a SqlGeographyBuilder to make a simple polygon (with SRID of WGS84). When I add the vertices CW and call the STArea() method, The area would be very large. When I add the vertices CCW and ...
0
votes
0answers
59 views

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?
1
vote
2answers
98 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 ...
1
vote
3answers
83 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 ...
2
votes
1answer
57 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 ...
3
votes
1answer
137 views

How to Get the Three Nearest Points to an Object (different layer)?

I have two point shapefiles and I want for each point in the 1st shapefile to get the 3 closest (based on air distance) points from the 2nd shapefile. If possible, it would be great to have each of ...
3
votes
1answer
144 views

Possible solution for dangling nodes?

I was just asked in a interview what a dangling nodes was. I had no idea and asked a former co-worker. I was informed that a significant amount of time was spent fixing these. I was confused how ...
0
votes
0answers
93 views

How to represent clustering of geographical points on map in STATA?

I've plotted a map on STATA using user-written program spmap and have also obtained the grid for my space using spgrid program. Now I want to see where most of my data points are clustered on map. Is ...
2
votes
1answer
73 views

postgis values within XYZ viewport in openlayers

I got this XYZ server where I get my maptiles. Now, when the user is at zoom level 1 ( closest). I want it to execute a command that gets the current viewport from the map and Queries my PostGIS ...
3
votes
2answers
123 views

Several questions about using spatial data?

If you have spatial data for SQL server, can you use the spatial data (both geometry and geography) in another application for instance ESRI ArcGIS? Is spatial data a standard that every GIS ...
4
votes
1answer
160 views

SQL Server data modelling + spatial data = what book?

What recommended book can you provide about data modelling for geographical spatial data (geometry) in SQL server?
3
votes
2answers
177 views

Visualize Spatial Data in Reporting Service

Is it possible to visualize a piece of geographical map from SQL server Spatial data (geometry, not geography) in a report from reporting service? If yes, how should it be done in a course of action. ...
4
votes
1answer
89 views

How to Reduce Decimal Precision of Image Value in ArcGIS?

I'd like to ask about the value on following image. This is an interpolated precipitation layer using IDW method in Arcgis. On this layer, the values is like this: This is a raster image. After ...
0
votes
0answers
56 views

How to Export a Geodatabase with Subtypes and Domains to Microsoft Access Without Losing Information?

I want to export a geodatabase file with all subtypes and domains values to open in Microsoft Access without losing any information.
3
votes
1answer
73 views

Accessing data stored in related tables from a network dataset

According to ESRI's transit data model, this implementation, and several thesis papers, any non-spatial information (such as public transport schedules, employee info, trips etc) which is not stored ...
2
votes
1answer
111 views

Update query does not affect any rows, privileges are set to public and allow all actions

I've been trying to update a column of integers called level_dept in a table called adminboundaries within the sql query tool on pgadmin3 and the query runs and finishes with a lot of lag, but 0 rows ...
-2
votes
1answer
61 views

How do I set the protocolVersion using the jdbc postgres driver? [closed]

I attempted to concatenate a string to the url parameter of the below in order to set the protocolVersion, but I'm not sure how to keep the string in the url without altering the name of the database, ...
13
votes
5answers
309 views

What in-depth spatial database systems tutorials exist?

Is there a good tutorial that explains in depth the internals of a GIS and a spatial database system such as PostGIS with examples and without any background assumption? I'm specifically looking for ...
8
votes
2answers
385 views

Postgres/Postgis spatial index - no speed up

I have a spatial table in a postgres/postgis database. Every row in it represents a Polygon. It is of following form: +----+--------+ |gid | way | +----+--------+ |241 | 01030..| The geometric ...
5
votes
1answer
114 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 ...

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