jduck.net
homepage of Jonah Duckles
RSS
  • Archives
  • Recipes
    • Cuban Bread
    • Middle Eastern Flat Bread
    • Black Beans
    • Garden Salsa
    • Barley Soup
    • Rosemary Potatos
  • About
    • Resume

Getting to know PostGIS Part II

By Jonah On January 30, 2009 · 3 Comments
So its been over six months since I made my first tutorial post about PostGIS. I now use PostGIS on a regular basis and thought it would be good to update the tutorial with some meat on how to use PostGIS. Get some data and import it Grab populated places points wget http://edcftp.cr.usgs.gov/pub/data/nationalatlas/citiesx020.tar.gz Grab US [...]
[Continue Reading...]

Install MacPorts in Local Home Directory

By Jonah On December 12, 2008 · Add Comment
I was needing to install MacPorts on a multi-user system where I didn’t have root access. Here is what I did. mkdir ${HOME}/macports cd ${HOME}/macports wget http://svn.macports.org/repository/macports/downloads/MacPorts-1.6.0/MacPorts-1.6.0.tar.gz tar -xzvf MacPorts-1.6.0.tar.gz cd MacPorts-1.6.0 ./configure --prefix=${HOME}/macports --with-tclpackage=${HOME}/macports/tcl \ --with-install-user=${USER} --with-install-group=${USER} make make install You will now have a macports directory in your home directory: $ ls macports [...]
[Continue Reading...]

Using OGR to convert GIS Vector formats

By Jonah On July 18, 2008 · 1 Comment
OGR is a part of GDAL and is very useful for converting between geospatial vector formats. What does that mean? When storing Vector GIS data there are a dizzying number of formats it can be stored in, some of the more popular of late, or at least well known are KML and SHP. A friend [...]
[Continue Reading...]

Antrhopogenic RF Interference

By Jonah On March 12, 2008 · Add Comment
Was looking at raw AMSR-E data (a passive microwave radiometer flying on board Aqua). Can you tell where the cities are? Hmmm…I wonder what one can do with this? A development indicator, surrogate for population? Very interesting. This anthropogenic interference gets in the way of soil moisture detection over land, but I wonder if it [...]
[Continue Reading...]

Small houses

By Jonah On January 8, 2008 · 1 Comment
I have a dream of having one of these buildings (slideshow at Wired.com) in my back yard as a home office someday. Another dream is to get an acreage and scatter several of these buildings around with some paths connecting them together.
[Continue Reading...]

5 Dangerous things you should let your kids do.

By Jonah On January 8, 2008 · Add Comment
Gever Tulley has a great video about the sort of dangerous things kids need to do when growing up. It is nice to see this kind of thing. Its a breath of fresh air from the fear society we live in. On a related note, kids don’t get the freedom to go out walking and [...]
[Continue Reading...]

Scanning with sane’s scanimage from an ADF scanner to PDF and OCRed Text

By Jonah On January 5, 2008 · 14 Comments
Using libsane and tesseract, you can scan from an ADF (or non ADF) scanner in Ubuntu 7.10 to a PDF and OCR’ed text document with a few easy steps. First we need to make sure we have the necessary packages installed. apt-get install tesseract-ocr sane-utils
[Continue Reading...]

ntfsundelete

By Jonah On December 20, 2007 · Add Comment
Just did a stupid thing and deleted a whole tree of file on a windows partition. Never fear…ntfsundelete is here. sudo ntfsundelete -u -d /destination/directory -f -m *.jpg /dev/sda1 Run without the -u option and -d options to show what can be recovered. On ubuntu/debian to install it do: apt-get install ntfsprogs
[Continue Reading...]

Getting to know PostGIS

By Jonah On November 6, 2007 · 4 Comments
I am making the plunge to get more informed with how to use PostGIS. It is pretty impressive so far. Here is a quick tutorial which shows you how to get started and loading in a shapefile to play around with some fun SQL querying. I assume a basic understanding of the linux command line [...]
[Continue Reading...]

A bundle of links…

By Jonah On November 6, 2007 · Add Comment
Some neat things found on the web recently: Ponoko – Custom Laser cutting of Plexiglas and plywood. Make your circuit boards in china for cheap CouchDB simple database for content management systems. Mabel’s Labels – Got kids? Need to label their stuff, these look neat.
[Continue Reading...]
  • ← Previous Entries
  • Pages

    • About
    • Archives
    • Recipes
  • Recent Comments

    • Zunair Seemab Zain on Software Carpentry
    • » The paperless office with Linux on Scanning with sane’s scanimage from an ADF scanner to PDF and OCRed Text
    • Tommy Nguyen on Getting to know PostGIS Part II
    • Bushrod on Scanning with sane’s scanimage from an ADF scanner to PDF and OCRed Text
    • Jasonl on Scanning with sane’s scanimage from an ADF scanner to PDF and OCRed Text
  • Archives
  • Recipes
  • About
Build a website with PageLines