Here is a recipe for installing Leo from scratch on Windows (Win7 tested). The only prerequisites are command line
wget in PATH and an internet connection.
About 50mb of files are downloaded and 200mb consumed when done.
Open a command prompt and run:
wget -O apt.exe --no-clobber http://download.osgeo.org/osgeo4w/x86/release/apt/apt-r1193M.exe
apt install pyqt4 sip
wget --no-check-certificate http://gist.github.com/maphew/5393935/raw/install-pip.py
python install-pip.py GO
python install-pip.py GO
pip install -i https://testpypi.python.org/pypi leo-editor
After this the directory
X:\testing\root can be renamed and/or moved anywhere.
To run leo in future sessions, simply call
x:\path\to\root\osgeo4w.bat python apps\Python27\Scripts\leo, either as a batch file or windows shortcut.
IMPORTANT NOTE - this is just a proof …continue.
I’ve been sporadically working on a little command line installer for
It is based on
a command line apt-get-like installer for cygwin byJan Nieuwenhuizen. I
currently have two forks. One for o4w alone, which I’ve renamed apt, and
the second for cygwin alone, which I’ve left as cyg-apt. Forking is not
a good idea when there is so much in common, so I’m going to try and
bring them together. One app, two installers. Neither name fits this new
job so I’m going to use appy for the time being. It will have to change
eventually as there’s another, much bigger, python project with the
appy name, but
came across my desk and inspired me to make a poster. Well, it inspired
me to find a poster, but I didn't locate one that resonated just the
right way with me, so I made my own.
A portion of the first ever 'portrait' of the solar system taken by
Voyager 1 in 1990 from a distance of more than 4 billion miles from
Earth. Our world is a mere point of light, a crescent only 0.12 pixels
in size, coincidentally right in the center of a scattered light ray,
resulting from taking the image so close to the sun.
"We succeeded in taking that picture , …continue.
I was cleaning out old email and ran across this important message which
fell through the cracks. I don't have the time to fulfill this urgent
request, but thought perhaps I could help by getting the word out to
someone who can. Thus was born the Time Traveller drop
A web map service for Time Travellers who need to arrange for pick up
and or delivery of specialty goods. On the go and need a supply dump
provisioned? Put your drop point and request here.\
NOTE: payment and delivery term arrangements are *strictly*
between traveller and deliverer. We don't want to know about it and
will not …continue.
….some further experiments with
geoprocessing. Here is a simple script to convert a bunch of coverages
to shapefile. There are 9 coverages occupying 3mb, it takes about 6
minutes, consumes 2 processors to 80-90% capacity and chews through
300mb of ram:
cd w:/Env-dat.003/2007-March/workspace/envy_ed2import arcgisscripting
gp = arcgisscripting.create()
gp.Workspace = ‘./’
todo = !dir /b fwtc*
for cov in todo:
gp.FeatureClassToShapefile( cov + ‘/arc’, ‘./shp’)
Contrast that to using
which takes 10 seconds:
for %a in (fwtc*) do ogr2ogr -f “esri shapefile” ogr\%a %a
The problem is, ogr2ogr doesn’t …continue.
by a conversation with my father eons ago, I'm researching and
experimenting how to create a map in a discontinuous or interrupted
projection. Initially I was thinking of Buckminster Fuller's Dymaxion
Map, but I've since chosen a variant of the Bernard J. S. Cahill's
the Cahill-Keyes M-style.
2007 September 07
A free Canada-wide 1:50,000 elevation model.
This project was in preparation of sending a Canada-wide elevation model
to Google Earth and NASA World Wind. It was completed a couple of years
ago, although the data is not yet generally available through those
tools — thus the reason for hosting it
(thank you Adam
and the Free Earth Foundation!).
note: hostname has changed
The data are marked draft because only a very preliminary review of the
resulting mosaick has been done. There is no guarantee the data is
complete or faithfully represents it’s source. I am interested feedback
on the product and it’s utility but I make no promises …continue.
work we'd put together an experimental
OpenZoom image of a
mountain panorama. Time passed, stuff happened, and the original photo
montage was lost. So now the project is how do we get the original back
from the eight thousand tiles which comprise the zoomified experiment?
"Stitch Zoomify tiles into a single image (Ruby + ImageMagick)" by
because I'd used openzoom and not zoomify, and had the tiles on a local
network disk instead of an a webserver, I had to majorly bastardize
dezoomify to get it to work. The result isn't pretty and is hardcoded to
work with this single project, but because it didwork I'm posting it
wife bought me 100 years of National Geographic maps on an 8 CDROM
The maps are great, but the image viewer it comes with is horrible. If
anyone can help me extract the images I would be incredibly
grateful. This is a personal project, so I don't have a lot of money for
it, but would be willing to trade services in kind in addition to a
The files have the extension "
.@EX", begin with
ExeComp Binary @EX File v2" and appear to have embedded JFIF pyramids
in them. I can send a sample to anyone interested in helping me but not
post publicly as they …continue.
This is one of the smallest maps from the natgeo set. The compressed
is 545kb. Here is zoom level 4, focused on the canadian part of the
Yukon River, using the NG map viewer.
Corresponding entry from my reconstructed mapdb (more on that later):
<title>Sketch Map of Alaska</title>
125Map LegendJuneau, Alas.Sitka, Alas.Pt. BarrowBering StraitYukon RiverYakutat BayAleutian Islands35543351533122342221241311211211</features>
<size>13 3/8 x 10</size>
And this is how it looks in the NG app. Obviusly there is another table
beside the one I've reconstructed to pull info from. I've not …continue.