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To your suggestion "Place impedance values on them like low speed limits". How would you do that? By creating a new cost attribute? How would you then set the evaluators? Thank you so much
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06-16-2011
07:51 AM
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Thank you for your suggestions. It would be also nice to add a restriction attribute for the highways and add a parameter on the restriction. Something like that: with a car, the highways are transferable, by foot not. The mode would be the parameter. However, I'm not sure if this is possible to do. So far, I did not manage to implement this. The option "parameters" in the Network Dataset properties was always inactive (???). What do you think?
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06-16-2011
07:31 AM
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Hi I want to remove certain elements of my road network. I tried it with the network identify tool in ArcMap. However, the elements were still there after clicking "remove". Is there a better way to do it? I want to avoid building a new data set... Thanks
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06-16-2011
07:16 AM
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Hi I want to add a hierarchy to my network data set. The street network does include information on the street types. However, the information is in string format, not integer. Is there a way to add a field to the street network source or add the hierarchy based on the string values? Thank you
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06-16-2011
04:46 AM
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Hi I would like to avoid highways or main roads when doing "best route analysis" (impedance: shortest route). What is the best and easiest way to implement this restriction? Thanks
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06-15-2011
05:01 AM
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Hi How does this work with the summary statistics tool? Which statistic type do you use? I have a table with many variables and I want to sort the data based on 3 variables. Thanks
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04-29-2011
03:54 AM
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Is there a way to select PARTS of a route based on the network source? For example, I have routes which contain walking on a street and bus rides on the bus line network. I now want to select the sections where the routes overlap with the bus line network. I would appreciate your help very much! Thanks
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09-08-2010
03:58 AM
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Hi I have an excel table with trips where the origin and destination locations are in the same row. I now want to add these locations to a route analysis layer (shortest route analysis) using Python. Each trip has an id. For some trips, more than one row exist (say: the trips has more than one leg, see example). Do you have an idea how do this with a Python script? id leg origin_x origin_y destination_x destination_y ------------------------------------------------------------------------ 1 1 x00001 y00001 x00002 y00002 1 2 x00002 y00002 x00003 y00003 1 3 x00003 y00003 x00004 y00004 Note: the origin coordinates of leg 2 and 3 are the same as for the destination of the previous leg. Thanks
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09-01-2010
07:46 AM
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Thanks! I noticed that. However, it is also not a solution for my problem (see example) since for stop 2 and 4 another network source has to be defined as for stop 2 and 3. I guess I need to locate and load the stops separately...
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08-11-2010
03:54 AM
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Thanks for your answer! I tried out the query builder. It only works when I want to avoid the locating of stops for example on a street with restrictions. But is is not possible to define the exact source (i.e. street, bus line, bus stop etc.) on which the stop should be located. I can build the query only based on the features of a specific network source. Do you agree? Do you know another solution?
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08-10-2010
09:03 AM
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Hi, I am performing a ???find the best route analysis??? based on given stops and modes on a multimodal network data set (bus, tram, train, street). I plan to write a Python script, because I have a large number of stops and trips. The routes that I want to solve often consist of more than 2 stops and of various modes. For example: Stop 1 to Stop 2: mode: walking / network source: street / impedance: walking time Stop 2 to stop 3: mode: bus ride / network source: bus network / impedance: bus driving time Stop 3 to Stop 4: mode: walking / network source: street network / impedance: walking time For this example: a) Is there a way to define more than one impedance in a route layer? In the end, I would like to get the total time needed to travel from stop 1 to 4. b) Is there a way to define the exact network element for a stop to be located when loading the locations (other than closest and first)? Thank you for your help!
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08-10-2010
02:39 AM
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