Tagged Questions

One or more structured sets of persistent data, managed and stored as a unit and generally associated with software to update and query the data.

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0
votes
0answers
36 views

Can i use self join in a table of feature class(ArcGIS - ArcInfo)?

I read an article about self join (pros and cons) in databases. It was very interesting for me and raised a question about self join in Geodatabases. I surfed on the internet but I couldn't find any ...
13
votes
3answers
614 views

Database for offline slippy map tiles

I currently have an offline HTML5 map application (built on Leaflet & KendoUI with custom additions) that has an app manifest and works fine on multiple platforms. However, I am hesitant to use ...
1
vote
2answers
106 views

Load information about a feature

I must mention first of all that I am very new to this area... I am developing a GIS application. I created a simple map using geoserver with openlayers, it is all working through apache tomcat - and ...
1
vote
1answer
30 views

Are database client files platform specific?

I'm just looking for some clarification on a question that came up with me this morning. Are the DLL client files (libeay32.dll, libiconv-2.dll, libintl-8.dll, libpq.dll, and ssleay32.dll) platform ...
4
votes
2answers
1k views

Arcpy Insert Cursor not inserting all rows

Good morning all, I have a script here that takes data from a cross-tabulated non-spatial dataset where monthly values are stored in a single table row for a given year and linearizes those data so ...
2
votes
1answer
98 views

What is the proper way to delete an SQL Server database in order to delete an SDE geodatabase?

I'm new to this SDE stuff and would like to know the best way to cleanly delete an SQL Server database in order to delete the SDE geodatabase. Is it as easy as right clicking on the database in SQL ...
8
votes
1answer
349 views

How to fix “Unable to initialize ODBC connection to DSN for ALC_AV_CO”?

So I am new to the QGIS community, and I have been trying to bring in some rather large access databases with little to no success. I have windows 7, so I've gone in through administrative tools/Data ...
5
votes
2answers
99 views

Who knows GIS based Customer Relationships Management (CRM) tools?

I'm searching for a tool like something around a "GIS based Customer Relationships Management Tool". The functionality I am looking for is: 1) collect: collecting customer related data in several ...
0
votes
1answer
69 views

Check Geodatabase attribute against an external database

I have a Personal Geodatabase to which editors enter values from some field inputs. I would like some of the entries, eg Project No ( whose name is unique and has some some related attributes like ...
2
votes
1answer
35 views

Collapsing the multi-row output of a one-to-many spatial join to single-row (arcmap 10.1)

I'm working with TIGER data, looking at the relationships among incorporated places and counties. Not all places are completely contained by counties; some do span multiple counties. In the final ...
1
vote
1answer
24 views

Write unique ID(s) of polygons in layer A intersecting polygons in layer B to a field in layer B, in ArcMap?

I'm working in ArcGIS 10.1. Suppose that I have two polygon layers, A and B. Polygons in layer B can have one of a few relationships to those in layer A: They may be completely contained by ...
4
votes
1answer
70 views

How to determine correlation between two databases?

I need to perform some tests and verifications on databases and/or datasets. I need for example to analyze two databases and then determine if there is enough correlation between both. My main issue ...
12
votes
8answers
5k views

Where can I obtain an up-to-date list of US ZIP Codes with Latitude and Longitude Geocodes?

NOTE: This began as a question on Stack Overflow, which has subsequently been closed. I also noticed a similar question about Most Up-To-Date Source for US Zip Code Boundaries, but I believe this ...
4
votes
2answers
167 views

Calculate Field based on field value in a second table

I have a table in a MSSQL Server Enterprise SDE database. I need to join a table from a MS SQLExpress Workgroup SDE database and then calculate 11 fields in the Enterprise table based on values in ...
0
votes
1answer
51 views

How to detect(condition) if Query Layer Connection is failing?

I have a job (arcpy script) which relies on a query layer but it fails sometimes. It has to do with the query layer connection (the point where job fails randomly)- which is totally under the control ...
9
votes
4answers
600 views

Open Street Map and PostgreSQL what do I exactly need?

I make my first steps in the GIS world and everything is very new for me even if I work on a "huge" project (ie: for a single programmer) very related to maps. My project needs to know informations ...
11
votes
1answer
158 views

Naming conventions PostGIS Database

We are starting to build up a database with PostGIS. The database is supposed to be for a team of about 5-8 researches who work frequently with geodata and statistics. Has anybody experience with ...
4
votes
2answers
152 views

GIS Database Migration Project (Oracle to ArcGIS)

I have been tasked with converting an Oracle Database into an ESRI file geodatabase. The data represents a gas network. The client's Oracle database has over 400 tables, 120 of which are spatial. ...
0
votes
0answers
28 views

Developing a Sales Intelligence GIS System Linked to Database

I am developing a system for my salespeople so that they can obtain information about their customers in the field. The idea is for the primary interface to be map-based so they can view customers in ...
2
votes
0answers
84 views

Adding polygon to existing database column

I've built a database with postgreSQL with a few geometry columns. When I add some data to my non-geometry columns, I can see them in QGIS when I connect to my DB using postgis. Now, I want to add ...
31
votes
3answers
4k views

Are there newer routing algorithms (than Dijkstra, A*) in GIS databases?

There are works like Reach for A* from Microsoft researchers and Highway Hierarchies by Sanders and Schtolz (if I spell the name correctly) from Karlsruhe Uni. Both of them reduce the calculations ...
1
vote
0answers
55 views

Allocate places according to distance

I've asked this over on Stack Overflow but thought that someone may have a GI point of view that may help: As an over-simplified example I have a list of events that have a maximum attendance: ...
2
votes
3answers
784 views

Create an ArcCatalog OLE DB Connection using Python

Is it possible to create an OLE DB connection (*.odc) to a database in ArcGIS 10 , but using Python instead of the ArcCatalog GUI wizard? I don't need to necessarily create a file on disk, just make ...
7
votes
2answers
210 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 ...
1
vote
0answers
185 views

Connect QGIS to MSSQL view (i.e. not a table)

I've got a MSSQL view containing data I want to show in QGIS. The view transforms a BLOB field containing WKB that is in one of my tables into a SQL geometry, which QGIS will be able to display. ...
1
vote
0answers
51 views

Creating tables using the coordinates of weighted graph?

Hello All, Kindly let me know how to create tables using the coordinates of a weighted graph ??
8
votes
4answers
213 views

Geolocation database of beaches

Anyone know where or how to obtain a database of worldwide beaches? Required fields are: name latitude longitude coastline aspect (if possible) Alternatively, is there a way to query Google Maps ...
0
votes
1answer
201 views

Problem in Spatialite database creation

When I try create a new DataBase, Spatialite plugin return the dialog error box: The SQL query seems to be invalid. no suck table: views_goemetry_columns When I click in OK button, a second dialog ...
2
votes
2answers
135 views

Can I import a .gml file into Spatialite in QGIS?

I have some Ordnance Survey Address Base data files which have a .gml extension. I have imported them to GGIS as vector layers along with some mapping data but would like to explore them with ...
0
votes
1answer
72 views

Column exists in DatabaseMetaData, but does not exist in relation?

I am using JDBC to query a PostgreSQL database. And I want to populate a column called wiki_url based on the value of another column, level which will determine which value of 5 columns to concatenate ...
7
votes
3answers
1k views

ArcGIS fails to import all records from huge CSV file to file geodatabase table despite being within FGDB table size limits

I'm using ArcGIS 10.0 on Windows 7 64-bit with 4GB of RAM. I have some very large tables in CSV format to import to ArcGIS, they all have about 30 fields, upwards of 5 million records per table (a ...
3
votes
0answers
43 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
0answers
67 views

Where can I find spatial data on Runoff Data and peak discharge data of Asia/India?

I am looking for GIS Runoff data of asia/India region in m3/sec for analysis in ArcGIS 10.0. Is there any data set/database where I can download this? I tried but unsuccessful in getting data. ...
0
votes
1answer
122 views

Why is the database connection lost on every query?

Every time I started a query the connection with the database is lost. Anyone familiar with this problem? This problem occurs with various query, for instance: CREATE TABLE table SELECT a.*, ...
0
votes
2answers
515 views

osm2pgrouting connection failed

I'm importing data from my OSM file to a postgresql database using osm2pgrouting. I followed everything in from here and it went smoothly, until I try using osm2pgrouting. This is what happens: ...
7
votes
5answers
729 views

I'm looking for a comprehensive database of all cities/towns in South Africa

The title says it all really - I'm looking for a comprehensive list/database of all cities/towns in South Africa. I know about these guys: http://www.afrigis.co.za/, but they're just not getting back ...
1
vote
1answer
118 views

How to connect QGIS to an online database on Mac OS X? [closed]

I'm a real beginner/dummy when it comes to QGIS and online databases. I have tried a variety of things trying to connect to Spatialite, PostGIS and MySQL but all attempts have failed due to my lack of ...
4
votes
0answers
419 views

ARCMAP ERROR 000464: Cannot get exclusive schema lock

I am trying to run the "Near" tool in Arcmap. Both my layers involved are on a SDE database. When I run the tool I get the following error... ERROR 000464: Cannot get exclusive schema lock. ...
1
vote
0answers
64 views

Hydrology, operational rainfall-runoff models

I am trying to collect information about operational rainfall-runoff models used around the world. I hope to build database with country outline with attached information what organization is covering ...
3
votes
3answers
843 views

Is there a way to link ArcGIS to MS Access and use that DB?

I have an IT background but I am new to GIS. I recently recieved training using ARCMAP. I have about 5000 farmers that I need to put in a database and access the information using GIS. The vision is ...
1
vote
1answer
175 views

Google maps api, several moving markers using a csv file containing the coordinates

I collected 5 sets of coordinates of moving vehicles and I want to play the scene using googlemaps API showing those 5 vehicles moving. The sets are saved in a postgresql table. is it possible ? if ...
3
votes
1answer
117 views

Geoserver Link to External MS-Access Database

Is there a way that I can link a shape (as a polygon, with a LINK_ID = 12345) from Geoserver and have it open or link to the specific information (LINK_ID_DB = 12345) within an online Web Microsoft ...
1
vote
2answers
187 views

One Polygon Joining to Database with Many matching records

Using ArcMap 10.1. Is this possible to have one polygon and join to a database/excel with many matching records? I would like to have 1 polygon but match to 100 corresponding records in a table. When ...
44
votes
7answers
1k views

How do I get started with PostGis

I have been reading a lot about it, but I am struggling to find a good beginner's guide. Which tutorials/books do you recommend? My past experience involves python and arcgis. But I have never worked ...
3
votes
1answer
200 views

Using Google Earth to query database

I've been reading about using Google Earth to query data (this article) and I'm interested in learning how to make one of these. I just have a couple of questions: 1. Is this possible with the free ...
1
vote
1answer
182 views

QGIS error when open project when layer via accesses the database

I changed from QGIS 1.7.3 to 1.8.0. Problem is that I can´t open QGIS Projects, QGIS crashes when there are layers involved loaded via access-database connection. I used eVis. What can I do?
16
votes
2answers
218 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 ...
2
votes
1answer
90 views

spatial data filtering without GIS?

I have access to a database here (description of the columns are also available) containing spatial data in text format and with WGS84-EPSG:4326 coordinates. I would like to only select data in my ...
12
votes
2answers
350 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 ...
8
votes
2answers
574 views

Converting ms-access database into easy to use spatial database

I've recently come into ownership of an MS-Access database (2007 accdb), which I want to be able to use in a GIS. I know a little bit about GIS (I've used QGIS and ArcGIS quite a bit) but very little ...

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