3,803 reputation
32975
bio website elegantdesigns.ca
location Fredericton, Canada
age 31
visits member for 4 years
seen 11 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

Jul
19
comment Mapping Trails with GPS - Hardware Suggestions
Have you considered getting a map-less data logger you can throw in your backpack or on your key chain to accompany your handheld device? These things can run you between $50-$200
Jun
12
comment How to make a routable graph from a Point and a Line shapefile, using Networkx?
@scw I was going to post your answer to my question, but you beat me to it haha. Great answer ;)
May
30
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
So far this is working better than the other solution. Can you explain the excel part about adding previous and next points further please?
May
29
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
@mr.adam I created this chat room here so we can talk about this a bit further chat.stackexchange.com/rooms/14805/speed-layer
May
29
comment How to simplify a routable network?
Any issues with maintaining "weird intersections" or grade separated roads?
May
29
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
@mr.adam In the fl = arcpy .. etc, shouldn't that be before the for loop to avoid the script creating multiple files? I'm using ArcGIS Advanced and so far, I've modified your script to fit my needs. I'm just trying to fix an issue with fl. Errors: arcgisscripting.ExecuteError: Failed to execute. Parameters are not valid. ERROR 000368: Invalid input data. ERROR 000732: Selecting Features: Dataset fl does not exist or is not supported Failed to execute (SelectLayerByLocation).
May
28
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
the segments and speeds might not be split the same way as the data is collected by two different entities; furthermore, a segment can have different speeds in either direction.
May
28
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
Now that you have any points to comment; where does the speed layer come in place? Did I misunderstand your buffer command?
May
27
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
@Jakub the only attribute I want from the road sign is "posted_speed". The sign layer does not have information on directionality
May
27
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
@StephenLead Yes, the sign point is located 1 to 5m from the line layer to indicate in which direction the speed applies
May
23
comment Integrating polygons into geometric networks
Can you reduce the representation of some of these polygons into lines?
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