12,475 reputation
1061141
bio website maphew.com
location Yukon Territory, Canada
age
visits member for 4 years, 3 months
seen 2 hours ago

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


Jan
19
comment How to install ArcView3 on 64-bit Windows?
What platform did you use for the VM approach? (e.g. MS's xp-mode vmware, virtualbox, etc.)
Jan
19
comment Partially updating raster (DEM)?
Although the question is DEM specific, the challenge and solution is not. The same process can be applied to any set of raster (image) layers. Thanks for bringing it up Tomek.
Jan
18
comment common task in mapping applications
@mwalker +5! post as an answer and get your dues :)
Jan
17
comment No difference between distances measured in projected and non-projected data
the comment Wolf refers to is "in ArcCatalog I simply went to shapefile properties->XY Coordinate System. Then I pressed “Clear” to delete any previous information. The second step was to select “New” to choose a new Projected Coordinate System (Mollweide, with Central Meridian set to a specified value). The third step was to select the Geographic Coordinate System and I chose ->World->WGS 1984.prj. Then I loaded the shapefile in ArcMap and performed “Point Distance”. Where is the mistake?". It was submitted as an answer and not a comment, since deleted to clean up the question.
Jan
14
comment Switching career from GIS Technician/Analyst to GIS Web Map Developer/Programmer?
"How can I land a job in web mapping/application development with little to no experience." short answer: show you can do it! How's that done? see the excellent answers below :)
Jan
14
comment How would one geocode historical US census records?
Hi ktreiche, welcome to GIS.se :) unfortunately NHGIS is already mentioned in the question and discounted as not suitable.
Jan
12
comment Teaching GIS, what to do and what not to do?
it's okay not to have single right answer, so don't accept anything. It's also okay to pick the one that is most correct and let the voting system take care of the rest. It's quite common to see non-accepted answers rated much higher than the "right" answer, and that's as it should be.
Jan
12
comment canvec: why so quiet? where are all the users?
Canvec is available in non-tiled form by province/territory and nationally in GML and FileGDB formats. It's not done for shapefiles because they can only hold X number of records before imploding. I have some rough scripts here which automate downloading and merging small tiles together into bigger pieces. They utilise the free and open source wget and gdal_translate from gdal/ogr utilities (see OSGeo4W for acquring them on Windows). Some editing is required to make them work in areas outside the Yukon.
Jan
12
comment Generalisation Strategies for Building Outlines
that's an interesting approach and it seems relatively effective. Thanks for the pointer, it's something I'll be able to use. Your answer would be better if it contained a simple phrase containing the core idea being referenced and wasn't just a link.
Jan
11
comment canvec: why so quiet? where are all the users?
That tool and it's layer files is a great help in making sense of the canvec structure. I'm using it as a foundation piece for our own canvec toolset (which will be shared when it's working). Note that the layer files hide some features by not symbolizing them. To fix: for each layer, open properties > symbology > add values > complete list, if no new values show up, everything is being shown, if otherwise the shown values are being omitted. (Hi Adam, welcome to GIS.se :)
Jan
10
comment How do I access ArcObjects from Python?
The nice thing about this approach is that it doesn't require installing Visual Studio, which is pretty heavyweight if the only thing you'll ever do with it is register the com objects. If I'd known about this pure python method I'd likely never have tried Cederholm's route. ;-)
Dec
30
comment Using ArcGIS 10 on a virtual machine with OSX
@celenius: one of each. There are many messages in the esri forums about performance problems with v10, here, for one. There is no observable pattern as of yet as to which installs will be poor performers and which not, excepting that it appears entirely unrelated to system resources like available ram, disk space, cpu speed, OS version, etc.
Dec
24
comment Using ArcGIS 10 on a virtual machine with OSX
I ran the ArcGIS 9.4 beta, which was renamed to v10 for release, on VMWare under 64bit XP host. It was quite slow, which I chalked up to running under a VM. However we've since installed v10 natively on 3 of the 4 machines in our unit, running a mix of XP and Win7, and 2 of the 3 are performing horribly, much worse than 9.3 on the same machines. The slowness you are seeing may have little or nothing to do with running in a VM.
Dec
24
comment GIS Certification
the phrase "I am currently enrolled" is repeated. I think the first occurrence is there by mistake and can be deleted :)
Dec
21
comment What strategies, criteria, or rules to use for selecting coordinate systems?
The central point in this is that querying the same location in Albers and UTM yields different numbers, but the location in relation to others is so similar as to render the difference meaningless. Likewise area and distance calculations compared between Albers & UTM are close enough that the differences can be considered statistical noise at this scale. (We commonly deal with features in the hundreds and thousands of Km: Parks, Game Management Zones, etc.)
Dec
21
comment What strategies, criteria, or rules to use for selecting coordinate systems?
@whuber: the word "arbitrary" here is meant to convey the idea that we, the humans, are imposing a mental construct onto the reality out there. If we were using for example, a base 12 number system, the coordinate system would be completely different yet could describe the world just as well. By no means do I mean to imply it doesn't matter which system is used. In matter of fact, choice of coord-sys is often the most fundamental decision to be made.
Dec
21
comment Is there a projection issue with the NRC Canada Atlas hydrology data?
Thanks for taking the time to pass on the response from NRC Jakub. I suggest marking this as the accepted answer (yes it's perfectly acceptable to change the accepted answer when a better one comes along, even if it's your own).
Dec
16
comment How can I transform GCS_North_American_1983 to GCS_WGS_1984?
when editing: to keep linewrap intact, highlight the code block and press [ctrl-k]
Dec
15
comment Add Shapefile now fails :(
it's okay to answer the question yourself, and accept it as answered. Embedding the answer in the question will keep it lingering in the unanswered pool forever.
Dec
14
comment What Makes a Map Beautiful?
The Missippi history series is truly a masterpiece, both for it's cartography and the field work it's built on. Thanks for reminding me about it.