[gpl_list] Comments regarding the recent DOT Transportation Layer

[HILL Milton E * EISPD GEO]

>From Dorothy:


--- Milt

From: Dorothy Mortenson [mailto:dorothy.c.mortenson at state.or.us]
Sent: Thursday, July 12, 2012 9:13 AM
To: HILL Milton E * EISPD GEO
Subject: FW: Comments regarding the recent DOT Transportation Layer

Milt,
Can you send this to the GPL? I do not have permission to send and Bob is out for a couple of weeks. Thank you.
Dorothy
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I have taken a closer look at the transportation rest service:
http://navigator.state.or.us/ArcGIS/rest/services/Framework/Trans_GeneralMap/MapServer

I have compared it to the USGS transportation layer that was used for the recently published topographic maps:
http://services.nationalmap.gov/ArcGIS/rest/services/transportation/MapServer

Comments:
1) In comparing the two in ArcMap, USGS wins in that:
* The grouping of layers is done very well in the USGS version, with the ability to turn different layers on and off (interstate, county roads, etc. and their respective labels).
* It appears to be more complete.  I found that when I zoomed in, there were connecting roads missing, whereas they are filled in and seamless in USGS. An example is attached.
* The documentation is pretty good, tho could stand for a little improvement.
* The railroads are much cleaner, tho maybe not as technically correct. USGS wins cartographically; ODOT might be a good choice for query analysis.

2) Both could use a "light" and "dark" version, depending on what the background will be.

3) I believe the ODOT version is missing the mark cartographically at the statewide level, but could be greatly improved if it used a similar strategy as the USGS as far as how the layers are broken out. The symbology for the Highway Network theme and the Signed Routes are a little too bold to be used with anything else. As a guide, look at any of the Street Map services.


I have not looked at the downloadable data yet.

Dorothy



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ><(((('>
Dorothy Mortenson
Oregon Water Resources Department
(503)986-0857

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