12,491 reputation
1061142
bio website maphew.com
location Yukon Territory, Canada
age
visits member for 4 years, 3 months
seen yesterday

hewer of maps, old time techie, newbie developer

woohoo, http://gis.stackexchange.com/ now open to the public!

personal - www.maphew.com
in-between - yukongis.ca
work - www.environmentyukon.ca

profile for matt wilkie on Stack Exchange, a network of free, community-driven Q&A sites


Oct
14
comment How do I open the Identify window in ArcMap?
not too hard: resources.arcgis.com/content/kbase?fa=articleShow&d=21485
Oct
13
comment How does ArcGIS compute the distance between two points with a non-equidistant projection?
I agree, welcome aboard!
Oct
13
comment Can ArcPublisher 10 publish backwards to an 9.3 PMF?
Yes please! (someone? anyone?)
Oct
12
comment How to install GDAL with Python on windows?
@scw please consider rolling up the examples from the comments into your answer. It will make it easier to piece the relevant information together into a cohesive whole (in part because of being able to preserve code formatting). Vote up the comments you use as means of crediting and acknowledging the source.
Oct
12
comment How to install GDAL with Python on windows?
You can set o4w python as the system default python, e.g. make it available to everything, by adding it to the system registry. There is a python script for doing this on 32bit windows at trac.osgeo.org/osgeo4w/ticket/114 (64bit must be added by hand).
Oct
12
comment Does Re-Projecting an ESRI ShapeFile only update the content of the .prj file?
Please clarify by stating which 3rd party app you are using. Some apps may only change the .prj file, and others may do a complete coordinate by coordinate datum transformation. In other the words the correct answer at present is both Yes and No. :)
Sep
30
comment Define the “system” in Geographic Information System
To my mind procedures cover the interactions between all the parts data/software, hardware/software, etc. Leave that out and we don't have a system.
Sep
30
comment Define the “system” in Geographic Information System
Interesting that that Sofware is at the bottom of the list. ;-) I'd order it: Data, People, Procedures, Software, Hardware. Actually, this is begging for a diagram because it isn't a linear or hierarchal relationshop. (gotta love an age when 3 paragraphs is considered "wordy"!)
Sep
28
comment Will ArcGIS 10 support Python 2.7 or Python 3.1?
I welcome explicit examples/demonstrations of incompatibilites and/or data corruption (honestly, I really do). I've upgraded across major python versions for several years and not (yet) encountered any significant issues. On the other hand I've seen some pretty significant data corruption from arcgis itself. So, it's a risk I'm willing to take, but with suitable caution and due diligence.
Sep
28
comment Can I use python 2.6 with ArcGIS 9.3?
The main impetus is that my text editor / IDE of choice, leo-editor, requires 2.6+. I've not encountered the dll conflict message and I've been upgrading beyond the ESRI shipped python since py2.1 (using the recipe in the other answer). However it should be noted I only use a small subset of the geoprocessing tools and there may well be incompatibilities yet to be uncovered.
Sep
27
comment Can I use python 2.6 with ArcGIS 9.3?
All is not completely well though, I recently discovered that gp.ListDatasets() breaks in py2.6 with "This object does not support enumeration"
Sep
21
comment How do I combine high resolution and generalized hillshade rasters to produce enhanced shaded relief?
@whuber, I don't know how it works. I've just observered that the result of combining layers in photoshop or gimp with an opacity of 60% (for example) is different from raster calculating the same two layers together with a 60/40 weighted average.
Sep
21
comment How to integrate SAGA Python Modules into ArcGIS Desktop?
it's good to have independent verification that it can be done, and why it makes sense, but you leave out the crux: how?
Sep
16
comment Are there any good resources on WFS support in ArcGIS?
Also interesting would be publicly accessible WFS servers. Last time I looked, awhile ago, there were very few, even from ESRI.
Sep
16
comment How do I combine high resolution and generalized hillshade rasters to produce enhanced shaded relief?
the central though unspoken idea in Bill's answer is that just about everything you can do in Gimp/Photoshop/etc. with regards to mixing layers and overlays can be done with raster calculation -- as long as you know the math. It's not easy though which is why there aren't a lot of ready made solutions. Going on theory alone, I'm not a math head, I think what's missing from the example above is a third raster to act as a poor man's opacity/transparency slider.
Sep
15
comment In a ESRI file geodatabase schema lock, what does the number after the username stand for?
"There can be only one!" correct answer. The community generally balances this out by voting up the "other" answer, often higher than the accepted. You could summarize the answers into a single post to accept and mark it Community Wiki, example. I would only do that on long threads with more than two correct answers though, or where the correct parts are intermingled with maybe-not-right parts. And certainly not without upvoting the source answers.
Sep
14
comment Where can I download 1 arc-second elevation data for Canada other than Geobase?
Here is 062j05: imgur.com/krL4Z.jpg, stairs are still visible but muted compared to your sample. Yes the decision to use metres instead of decimeters or centimeters for elevation values in cded was shortsighted and unfortunate. Nothing to be done about it though, it's still the best available.
Sep
13
comment Discontinuous or Interrupted map projections?
from reading the docs, both the ArcInfo and GMT examples given thus far use this process of generating pieces and pasting together. In theory this should be adaptable to qgis, grass or whathaveyou. The arcinfo paper has spectacular detail for the process while GMT gets a nod for reducing it to 3 commands, albeit restricted to a single projection variant.
Sep
13
comment Where can I download 1 arc-second elevation data for Canada other than Geobase?
ohhhhhh: are you using contours (lines) or elevation models (rasters) to generate your reliefs? You must use the latter, which from Geobase is CDED -- Canadian Digital Elevation Data -- and not the former.
Sep
13
comment Where can I download 1 arc-second elevation data for Canada other than Geobase?
@Jakub, see updated post for what I get. What data (NTS tile) was used for the image you posted?