494 reputation
618
bio website cdc.gov/tb/topic/research/…
location Denver, CO
age 31
visits member for 4 years, 9 months
seen Apr 6 at 22:24

Associate trainer and data scientist for Revolution Analytics


Aug
13
comment What are your biggest challenges as a GIS developer?
I'm a statistician, and I have very similar complaints about ESRI products. My overly-optimistic theory is that, because computers were probably applied to stats before GIS, GIS software is about ten years behind statistical software (in its SAS/SPSS phase) and that a truly outstanding open-source program or stack is on the verge of breaking out. Maybe it already has - it's been years since I've had the chance to play with non-ESRI programs.
Aug
13
comment List of desktop GIS FOSS case studies
When you're asking a question where the collection of answers is the answer (here, all the various case studies) you should make it community wiki. Each case study should get its own answer, and then people can vote them up or down based on how interesting/useful that particular study is.
Aug
11
comment Open source methods for kriging?
People always say that, but I wonder: steep relative to what?
Aug
6
awarded  Critic
Aug
5
awarded  Commentator
Aug
5
comment Define “geospatial data” for a non-GIS professional
Sorry - I intended that the counties/populations list would be implicitly located within a state and country. Heh - you can tell I'm in local gov't.
Aug
3
comment How to represent bimodal attribute value distributions on a map
The transparency lets you see the actual density of lines - more lines make for more opaque color. Basically, it just prevents the mass of green lines from turning the whole segment into a solid green bar. It's a little weird in this application because the overlap of the lines is caused by random jittering, rather than actual overplotting (compare with this scatterplot:had.co.nz/stat405/resources/drills/plot-drills/ggplots/…).
Aug
2
comment How to represent bimodal attribute value distributions on a map
I think the first idea is brilliant, but I'm having a tough time visualizing the second turning out as anything but grey goop. Do you know of an example?
Jul
29
awarded  Beta
Jul
26
awarded  Scholar
Jul
26
accepted Buffers of public transportation transit times
Jul
23
awarded  Editor
Jul
23
revised Buffers of public transportation transit times
edited body
Jul
23
comment Buffers of public transportation transit times
Nice answer - thanks!
Jul
23
comment Buffers of public transportation transit times
I actually did something similar a few years ago using some arcane ArcGIS tool. The difficulty here is that public transit times in a city with three tiers of bus service and light rail are unlikely to be linear with distance. The nice thing about hooking into Google Maps is that it does a good job of picking optimal routes from A to B for me.
Jul
23
asked Buffers of public transportation transit times
Jul
23
comment What are the differences between spatial databases?
Could you elaborate a little more on what we'll see if we click that link? I'm a human, I don't like parsing URLs :p
Jul
23
comment What are some Free and Open Source GIS Desktop packages
Should have been community wiki.
Jul
23
answered What are some Free and Open Source GIS Desktop packages
Jul
23
comment USA geocoding that's anonymous, good, and free - does it exist?
Thanks - hadn't even heard about that.