3,797 reputation
32774
bio website elegantdesigns.ca
location Fredericton, Canada
age 31
visits member for 3 years, 9 months
seen 9 hours ago
GIS, Transportation, Civil Engineer in New Brunswick Canada. I'm interested in using FOSS, python, QGIS, PostGIS, GRASS, and QT to develop open source engineering applications

Oct
17
comment How can I calculate the optimal routes while touching all available roads in a network?
In our jurisdiction we have an additional variable, which is Sand. since lower volume roads get sand, and higher volume ones get Salt. If you want start up a chat room with me and we can discuss the problem fully. I can also give you some insight on what we've done and if our solutions can compare
Oct
6
comment Shortest path to nearest… something
I think the solution you propose is good if one is doing 1 to 1 routing,meaning that, you already know your origin or destination. The user in fact wants a routing problem where they have to route through all the nodes in the graph and for each node determine the nearest neighbour.
Sep
23
comment Python Field Calc for Document Hyperlink
it seems to me that your for loop is not correctly indented as it needs to be intended one more stop to the right. IT also seems to me that there are too many for/if statements in that code. Are you looking to loop through a folder and its subfolders and then returning the plat name in those folders as strings and add them to a standard url? or are you looking to link directly to the file?
Sep
23
comment Interpolation iteration using ArcGIS- arcpy
@KentonDekalb I'll work on that later on today
Sep
20
comment Interpolation iteration using ArcGIS- arcpy
Are you open to using numpy? If so, I can share an excellent interpolation (within or out of bounds) as well as with or without hard limits (edges/max/min)
Sep
16
comment Is “Python scripting for ArcGIS” book a good reference?
@Craig I'm mostly looking for an ArcPy resource rather than a python resource
Sep
13
comment Conceptually, what's the ideal way to develop detour maps for a large number of nodes
@UffeKousgaard Exactly that
Sep
9
comment How to Develop Optimal Routes for Street Sign Inspections
It seems to me like a cross between a travelling salesman and a garbage collection problem. I would call your neighboring counties, or what they do up in Michigan and see. AASHTO or TRB must have some documentation on "inspecting mechanisms for traffic signs". I know for us we used to collect day time asset data and night time retroreflectivity data
Aug
29
comment Is it possible to display two categorical symbolizes for two different attributes in one layer alongside each other in ArcMAP 10.1?
@RyanDalton I had deleted my comments so Jens can post a full comprehensive answer and had asked him to delete his comments as well
Aug
29
comment Is it possible to display two categorical symbolizes for two different attributes in one layer alongside each other in ArcMAP 10.1?
@Jens I found it worked best when the offset is half the line thickness
Aug
29
comment Is it possible to display two categorical symbolizes for two different attributes in one layer alongside each other in ArcMAP 10.1?
@Martin I thought about that, but the two issues where there are a lot of roads, and having very thick lines means that lines are just going to get dissolved and the other issue is that since the two variables are not related; you could have layer_a on top of layer_b or vice verse thus hiding the information below it.
Aug
29
comment How to map Traffic Count Points to Streets?
What's the objective of your analysis. I deal a lot with traffic data and representation. Furthermore, can you provide a few images perhaps from other resource online of what you're trying to do or replicate and I can perhaps guide you in the right direction
Aug
14
comment Vehicle tracking by QGIS
I'm not sure that there is any plugin readily available now that can do this. Are you willing to do some programming?
Aug
11
comment Toolbox from 10.0 causes an ArcGis 10.1 crash
I have that in my enviro variables, but I can't access the toolbox still on my win7 64bit machine
Aug
9
comment Toolbox from 10.0 causes an ArcGis 10.1 crash
Can you expand on your answer? I might have the same problem
Jul
30
comment How to get a city road network as line segments?
IF he wants only US data, then the BTS census transportation planning package might be a better option than OpenStreetMap
Jul
27
comment Simulating Random Agent Movements along Roads on Map
IF I may ask, what is the objective of this exercise? Are you trying to develop a pedestrian activity based model?
Jul
26
comment Which spatial bundling or grouping algorithm optimally groups elements by attribute?
As I read through the papers you provided, what's your recommendation on connecting these models to an existing linear programming one? furthermore, do you know if any spatial optimization problems have been solved using python, arcpy or pyqgis?
Jul
23
comment Which spatial bundling or grouping algorithm optimally groups elements by attribute?
I have a solution right now that implements a linear programming solution to construction projects. I want to improve on that by adding a spatial element to it. Thanks for the papers you provided, it's going to be a fun read.
Jul
22
comment Creating sign locations from an existing database with offset & dist to nearest intersection (buffer analysis)?
I caution from such analysis as we determined in a similar exercise that only about 40% of the signs (speed, control, and advisory) matched between on the field and the GIS data.