12,546 reputation
1064146
bio website maphew.com
location Yukon Territory, Canada
age
visits member for 4 years, 4 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


Feb
24
comment What raster-based GIS systems really work?
@markus, thanks for letting me know there is way to use non-grass rasters directly. I'll definitely give it another go next time I have some raster analysis to do.
Feb
24
comment How to change feature class and field aliases in bulk?
@Jasperiod, I moved most of Mark's snippets into a module I call parco, which is where OpenFeatureClass is also. I don't remember creating it myself, but maybe I did. Anyway, there it is at line 125.
Feb
16
comment How to split polygons without ArcView?
@mbarretts, you say what software you don't have, Arcview, but you don't say what you do have. Also do you mean each split poly has to have the identical area , as in numerically identical # of sq km's for each feature? Because fishnet will not do that, some fishnet squares will be entirely within the parent poly, and others will only partially overlap.
Feb
14
comment How to calculate Topographic Ruggedness Index in Arcgis?
Thank you Bill. I appreciate seeing the specifics of how a tool or operation works. From this anyone with a suitable investment of time and intellectual energy can build a new apparatus to carry this job out using the tools they have at hand. It's information like this which will make GIS.se a useful service in the long haul.
Feb
14
comment How to calculate Topographic Ruggedness Index in Arcgis?
I know I asked for an arcgis specific solution, but I'm accepting this one because of it's directness. GDAL Utilities are easy to acquire and install, universally acknowledged as best in class, and the command to generate this particular product is the definition of simplicity.
Feb
11
comment How to cut a 'tiled image' from a raster dataset using GDAL?
@vadp, @markusn, @mapperz & everyone else - please be descriptive. In addition to the link a sentence or two as to why you think this tool is worth looking at and what differentiates from the others will be helpful. We want the answer to be useful in the future as well as right away. Sooner or later link-rot strikes and if all we have is the url it's hard to find where the project incarnated next.
Feb
9
comment What will GIS be like in 5 years (and in 50)?
I've changed it to community wiki, but I actually think it should be closed and moved to GIS chat. Why? Because humans are incredibly poor at predicting the future, especially when it comes to technology and it's uses. I just don't think it's possible to have "good" answers, in the Stack Exchange sense. I chose the wiki route because as moderator I can't vote to close without actually closing.
Feb
8
comment Listing all feature classes in File Geodatabase, including within feature datasets?
thanks gotchula! That's the first time I've encountered the yield statement, had to do a bit of reading to figure it out. You forgot to note your sample is for arcgis v10.
Feb
8
comment Call FWTools (ogr2ogr) from ArcGIS python script
It's okay to mark your own answer accepted. I'm glad you figured it out, I have far too many of those "Doh!" over a single misplaced character myself. :)
Feb
7
comment What is the difference between DEM, DSM and DTM?
In this context raster and/or vector are merely the storage format or representation method, not a defining characteristic. A DEM can be represented as points or a triangular irregular network (TIN) and a DTM as seamless raster surface. Downvoters: please take the time to state why you think an answer is inappropriate so posters have an opportunity to learn -- especially when they're new here.
Feb
3
comment What methods are there to produce map tiles for google maps?
related: gis.stackexchange.com/questions/5101/using-gdal-to-cut-tiles
Feb
2
comment What methods are there to produce map tiles for google maps?
Thanks Mark, I didn't know about that aspect of FME server. Also thanks for disclosing your relationship to FME.
Jan
19
comment How to install ArcView3 on 64-bit Windows?
re: copy all files - was everything needed under C:\ESRI\\* or did you have to grab some files from elsewhere (I think I remember reading something about fonts and dll's).
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.