Comments on Open geographic data enables a wealth of maps - Greater Greater Washington

Comment by Thayer-D

Tue, 03 May 2011 05:31:29 EDT

Wonderful maps. Thanks for taking the time to do and share them. Maybe they could be made available to our local schools of architecture and planning. This is the stuff great urbanism is made from. I'd add Alexandria, love to see DC's diamond shape made whole.

Comment by Rooster_Ties

Tue, 03 May 2011 02:38:05 EDT

FYI, the second zipcar map thumb/link (the one on the rigtht) has an extra character in the hyperlink (a double-quote at the very end).

Comment by Froggie

Mon, 02 May 2011 23:02:56 EDT

@Rob: yes, you could do that easily. I thought you were suggesting shading, which is definitely what Nikolas suggested.

Comment by Ken Conaway

Mon, 02 May 2011 21:05:44 EDT

The Metrobus GIS data is outdated. Dates back to 2006. I've been wondering why there hasn't been an update in 5 years.

Comment by Rob P

Mon, 02 May 2011 16:42:24 EDT

Froggie, you'd know better than me, but couldn't you just open up the Symbology properties of that particular layer and select a different color ramp? I wasn't suggesting coloring in anything, just changing the colors of the lines themselves.

Comment by dano

Mon, 02 May 2011 16:32:28 EDT

Interesting... looks like the McMillan sand filtration site is listed as commercial. Was it rezoned to help with the redevelopment push? The only thing commercial near there is the corner store at N Cap and Bryant. An the hospital complex north of the reservoir.

Comment by Froggie

Mon, 02 May 2011 16:11:24 EDT

Dan did the topography one the way he did because that data is available as polylines, not as polygons. What Rob and Nikolas are requesting would require the latter. Which IS possible, but would require taking OCTO's point data and interpolating it/converting it to a polygon.

Comment by Jasper

Mon, 02 May 2011 16:10:35 EDT

I have been wondering for years how high Georgetown Hill was. Now I know. Great!

Comment by NikolasM

Mon, 02 May 2011 15:52:45 EDT

Dan, can you redo the topography one by filling in each elevation? I agree that it is just a bit difficult to read as it currently stands.

Comment by spookiness

Mon, 02 May 2011 15:39:07 EDT

DC's GIS setup is great. I recently left a gig in DC where I could easily fetch all sorts of files, and they're all available in ArcGIS or Google Earth format. Super-productive. Now I'm working in a different jurisdiction, and all their (useful) GIS data is walled off.

Comment by wmataplusside

Mon, 02 May 2011 15:34:10 EDT

The Metrobus map reinforces how far away I live from the rest of society, and why the trade-offs of exurban living are not always worth it, seeing as my bus only runs during rush periods and in peak directions.

Comment by Rob P

Mon, 02 May 2011 15:29:13 EDT

Dan, these are great. Like I commented at BeyondDC, I think the bus map that you posted with the county layer really helps put the extensiveness of the system into perspective.

I personally have a tough time interpreting the topography map at first glance. I think the fact that deep shades indicate both very low and very high elevations is what throws me. Perhaps a single color where the deeper shade represents higher elevation would work better?