November 29, 2012

Export UMBS Research Site Gazetteer to CSV to KML

1. Visit and download sites and lats/longs http://umbs.lsa.umich.edu/research/research_sites
2. Install a csv to KML converter
- I dowloaded the 32bit debian and ran the installer
- To open a the program go here and double-click /usr/local/bin/kmlcsv-converter (note I navigated within a sudo nautilus window to give the program permission to write within my Documents folder)

3. Move lats/longs on CSV to first two columns (kmlcsv expects this apparently.) Remove header line as that will become a site otherwise.

4. In google-earth go to File > Open and select your KML file.

5. To select a subset of the research sites add a new Folder under My Places then locate a site of interest > Right click > Save to My Places

Posted by kkwaiser at 10:48 AM | Comments (0)

June 17, 2011

Convert TIFF file to IMG or other raster in ArcMap

After loading the TIFF files into an ArcMap window, simply right-click > Data > Data export.

A

Posted by kkwaiser at 03:39 PM | Comments (0) | TrackBack

March 30, 2011

Installing PostGIS and Postgres on Ubuntu

Note: These are my working notes, there are better tutorials online.

PostgresSQL and PGAdmin
$ sudo apt-get install postgresql postgresql-client postgresql-contrib pgadmin3

PostGIS
$ sudo apt-get install postgresql-8.4-postgis

$ sudo su postgres
$ createdb postgistemplate
$createlang plpgsql postgistemplate

These fail (no file or directory):
psql -d postgistemplate -f /usr/share/postgresql-8.2-postgis/lwpostgis.sql
psql -d postgistemplate -f /usr/share/postgresql-8.2-postgis/spatial_ref_sys.sql


Install PHPpgAdmin (because it is different than pgadmin3):
$ sudo apt-get install phppgadmin

$ sudo nano /etc/apache2/apache2.conf
$ sudo nano /etc/phppgadmin/apache.conf
$ sudo service apache2 reload

Login to postgresql:
$ sudo -u postgres psql postgres

Set superuser password:
postgres=# \password postgres

Restart postgresql:
$ sudo /etc/init.d/postgresql-8.4 restart

To connect via PHPPgAdmin you need to create a non-superuser role (i.e., you can't connect via user postgres)

Posted by kkwaiser at 03:09 PM | Comments (0) | TrackBack

March 09, 2011

Connecting ArcGIS and PostGIS

Doing some research on the viability of setting up a spatial server. One option is to setup Postgres + PostGIS but a precondition would be the ability to read data from PostGIS directly into ArcMap for viewing (if not editing.)

How can I connect to a PostGIS database from ArcMap 9.3 and 10.0?
- Suggestions are ZigGIS for Arc 9.x
- Use a Query Layer to connect for Arc 10.x (viewing only)

zigGIS
- A summary of some of zigGIS' capabilities.
- Version 2.0 is propreitary but 3.0 will be opensource. Here's the roadmap for 3.0.
- Thoughtful blogpost from a developer with first-hand involvement in zigGIS.

Query Layer in Arc 10.x

- What is a query layer?

- Summary information from ESRI.

- Potentially useful How To involving Query Layers, postGIS and Dekho(?).

Posted by kkwaiser at 09:33 AM | Comments (0)

March 06, 2011

Cloud based GIS server

Possible solution to our need for a GIS-based data management solution.

Original ESRI press release.

More on ESRI's relationship with Amazon.

Suggested read from SpatiallyAdjusted.

PostGIS on a Window 2008 Server installed on the cloud.
What about running Postgres on Amazon's EC2?

Email exchange on Amazon EC2 and geoservers.

Posted by kkwaiser at 01:29 PM | Comments (0)

February 24, 2011

Opensource Web Mapping and GIS Summary

Premise: we do not have a sufficient plan for managing spatial data at UMBS. Currently, it is housed on a computer maintained by the Resident Biologist which, while backed-up and secure, makes version control, editing and access difficult. Ideally, at some point we will go to a web infrastructure for this. I've got a lot to learn on this subject so here goes.

Following this talk Stefan Steiniger - Building on Open Source GIS @ COSSFest 2010:


Web Map Server Software

Web GIS Server - server-side data processing utilizing WPS

Spatial Database Management Systems

Catalogue/Registry Metadata - data discovery tools which offer UI's for querying and displaying data

Posted by kkwaiser at 09:12 AM | Comments (0)