Our extended health insurance company helpfully profides pdf forms with
my name, client #, etc. pre-filled for easy printing. Unfortunately
there are a number of fields which will aren’t likely to change, like my
phone number and the names of my kids, which are not filled in. I’m
lazy, so I figured it was worth spending an hour figuring out how to
save 1 minute of no-thought grunt work every time I need to fill out a
I found an article extolling the virtures of
a pdf “annotator” for linux. Great, that sounds perfect! Flpsed is not
listed in the cygwin package repository but a little bit of …continue.
This was an attempt to use some photographic image processing
to bring back some detail in the regions of mountain shadows in a
Landsat7 composite image. It didn’t work but I learned a lot in the
process. It could be useful in future with other data which is has not
lost so much to white and black shadows.
Original on left while right shows result of contrast mask combined
with grain merge selected in the layer Mode. It almost works, but
not enough for the project I was researching for. Below, detail view of
grain merge result.
matt wilkie wrote:
just found the PHATCH project,
is python alternative to …continue.
As Tom Patterson describes in “Resolution bumping GTOPO30 in
using a too-detailed shaded relief image can actually yield a map which
is less legible. In the same article Patterson also demonstrates how to
counteract this problem. He says this is something to do to the
elevation model and not the shaded relief, but not having a graphics
program installed on my machine capable of editing 16 bit images I
applied it to the shaded relief instead. The results are good, but I’m
itching to try it out properly to see what the difference is when used
earlier in the chain. Here is my nutshell re-work of Patterson’s
resolution bumping …continue.
I embarked yesterday on a quest to fix areas of a DEM which are supposed
to be flat from a raster generated from lake polygons with elevations,
and not have abrubt transition from the flat lakes to the original DEM
(profile like a J not an L). Sample data at
There is a post in the ESRI support
which I *think* is describing what I want, in a syntax for arcinfo.
Since it looks like I’ll have to do some scripting no matter what, I
might as well figure out how to do so in open source tools rather than
be confined to the walled garden of ArcGIS. …continue.
I’ve moved the Arcmapbook project from Sourceforge to
I’m tired of meeting all the little challenges which come with being a
site administrator, in aggregate, they aren’t so little. In features
available to project adminsitrators, Sourceforge still has more than
Google Code, but the attention to usability and a clean interface has
won me over. The idea behind the move is that with the little time I
have to spend on this project, slices between “my real job” tasks and at
home after the kids are asleep will be spent actually on mapbook rather
than on it’s administration. Passage of Time, as always, will be the
best judge of …continue.
A recent thread on the osgeo4w mailing list prompted me to scratch an itch
I’ve encountered a few times: trying to figure out if there is more than one
executable DLL or EXE in the search path with the same name. The result is
dupe-search.bat. Invocation is a simple
dupe-search [dir to look for dupes
Results are saved in
It’s not all that intelligent, there is no effort to avoid text files for
example, but it works well enough for what it does (for me anyway). The most
significant thing I learned, had me scratching my head for a couple of hours,
was that a …continue.
Note: BC and Alberta archives are 68mb, Yukon & NWT only 2mb. Simply
ab bc from the set regions line.
Requires fwtools, wget, and 7zip to be in path.
*update: use ogr2ogr newer than 1.4.2 else some of the attributes
will be truncated! Please see gdal
for more info.*
:: rev 0.1 ~ 2007 Nov 10, Matt.Wilkie@gov.yk.ca
echo. Going to download National Road Network files from Geobase
echo. for Yukon and adjacent regions.
echo. When finished downloading I will attempt to unpack the archives
echo. and project the data to Yukon Albers, in shapefiles.
call :ChkReqs wget.exe