Latest Contributions by MelindaMorang

‎04-18-2018

Going to the Esri UC (July 9-13, 2018)? Here is a list of sessions the might be pertinent to public transit agencies: 2018 UC Transit Sessions.pdf We hope to see you there!

‎04-10-2018

Only impedance attributes. Oneway is probably a restriction, so that one doesn't count.

‎04-10-2018

Hello Chris. The fields in your barriers should take the form Attr_[Impedance attribute name]. So if your network has an impedance attribute called "TravelTime", and you are using TravelTime as the impedance attribute for the particular analysis where you will be using the barriers, the correct field would be Attr_TravelTime. Impedance attributes are a property of your network dataset. If you're building your own network dataset, you can give them any names you want. Consequently, there is no set list of possible field names for barriers. The valid values depend on how you've constructed your network dataset. When you create a network analysis layer (like a Route or Service Area layer), the barriers sublayers should already have the appropriate fields in them, so you don't actually have to construct the fields yourself in advance. Just in case it's not totally clear, barriers are NOT part of the network dataset. They are part of the network analysis layer and specific to each analysis.

‎04-04-2018

Make sure you're using "Miles" as your impedance attribute. Or, if you want to use a different impedance attribute, make sure you populate the associated Breaks_[impedance] field. They must match.

‎04-03-2018

Hello Suzie. Are you able to share a link or attachment of your GTFS data so I can try to reproduce the problem? And what is the name you're trying to use for your output feature class?

‎04-02-2018

I'm still trying to understand what your ultimate goal is. So...you want to have printed/text directions and to highlight the maneuvers that are associated with areas requiring some kind of local permits? Do you specifically need this information in the directions text and not on the map or in the map features?

‎04-02-2018

Are you trying to calculate the mileage of the different street types based on the directions text? If so, here are two alternative, easier/better ways to calculate your mileage. 1. Use the Copy Traversed Source Features tool after solving your route. This tool will output a feature class of the network edges (the individual street segments) that were traversed by the route. From that information, you can calculate the number of miles of each type of street that was used. 2. You can create some additional cost attributes on your network dataset and then "accumulate" these attributes along with solving the route. So, suppose you have two road classes, State and Local. Create two cost attributes, "StateMiles" and "LocalMiles". For "StateMiles", configure the evaluators such that the attribute gives you the road length for all state roads and 0 for all other roads. Do a similar thing for "LocalMiles". Then, when you solve your route, use the Accumulate Attributes section to accumulate StateMiles and LocalMiles. When the route solve is done, the attribute table should show you Total_StateMiles and Total_LocalMiles, which is the total number of miles of each of those road classes that was traversed. Please ask further questions about this if you are uncertain of how to create cost attributes and configure evaluators.

‎03-30-2018

Update: This tool is available in ArcMap as of the 10.6 release.

‎03-29-2018

Frequent, nearby public transit service isn’t useful if that service doesn’t take you valuable destinations, like your job, your school, the grocery store, the doctor’s office, the airport, etc. We need to understand where the transit service goes. If we can do this for an entire city, we can find out whether some areas have better access to important destinations than others, and we can use this information to understand other trends and to correct disparities. Check out this post on the Esri blog to learn more about how to calculate transit accessibility in ArcGIS: Mapping transit accessibility to jobs | ArcGIS Blog

‎03-29-2018

The GTFS shapes.txt file contains the actual geographic paths taken by your transit vehicles (buses, trains, etc.). The shapes.txt file is optional, but it’s important to have it so that routing apps can display the transit data nicely in a map and show an accurate representation of where your routes are. Check out this post on the Esri blog to find out how to create one for your system: How to make shapes.txt file for GTFS dataset with ArcGIS | ArcGIS Blog

‎03-29-2018

Not all transit access is created equal. Some areas of town enjoy more frequent transit service than others, and this may vary by time of day or day of the week. This, in turn, might impact the area’s (or point of interest’s) desirability or be correlated to the area’s socioeconomic characteristics. Check out this post on the Esri blog to see a sample analysis and find out how you can incorporate frequency of transit service into your analysis: transit service frequency mapping in ArcGIS | ArcGIS Blog

‎03-29-2018

Public transit (like buses and subways) connects people with their jobs, schools, healthcare, recreation, and more. However, typical fixed-route transit systems serve only the people and areas within a short distance of transit stops. Many maps inadvertently over-estimate the area and people served by the transit system. Check out this post on the Esri blog to find out why that is and what can be done about it: Who does my public transit system serve? | ArcGIS Blog

‎03-29-2018

Public transit (like buses and subways) is a vital service that connects people with their jobs, schools, healthcare, recreation, and more. Consequently, if you’re studying access to healthcare, assessing an economic development project, trying to choose a new site for your business, or performing any other GIS analysis in an urban environment, you can take your analysis a step further by incorporating public transit data. Check out this post on the Esri blog for more information about tools you can use for this! Tools for public transit analysis ArcGIS Desktop | ArcGIS Blog

‎03-28-2018

The only way to support schedule-based public transit in Network Analyst is to download the Add GTFS to a Network Dataset tool: Add GTFS to a Network Dataset | GTFS in ArcGIS To accomplish what you're trying to do, you would have to use this tool to create a network dataset that includes the transit schedules, then publish your service based off this network dataset. You also have to be able to install the "transit evaluator" on the server machine. There are some instructions within the tool's user's guide that talk about that. Note that you can get the closest facility and the travel time, but you cannot get directions that are sensible for public transit.

‎03-16-2018

Unfortunately, per-facility breaks are not supported with the Generate Service Areas tool. If you need this functionality for your script, you'll need to use the Make Service Area Layer -> Add Locations -> Solve workflow and use field mapping in Add Locations to use the per-facility breaks fields as Jay suggests above.

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My Ideas

Latest Contributions by MelindaMorang

UC2018 sessions relevant to transit agencies

Re: Network Analyst Barriers Fields

Re: Network Analyst Barriers Fields

Re: How to apply different impendance by Break field for facilities in service area network analysis?

Re: Error using Better Bus Buffers

Re: Network Analyst Directions

Re: Network Analyst Directions

Re: How to make a template (.xml) from Network Dataset

Mapping transit accessibility to jobs

How to make a shapes.txt file for your GTFS dataset with ArcGIS

Map the frequency of transit service across your city and find out why it matters

Who does my public transit system serve?

Cool tools for analysis with public transit data

Re: Customizing Travel Modes

Re: Generate Service Area with break based on an attribute?

Re: TransitNetwork for multimodal analysis?

Re: Network analyst public transit tool Prepare ti...

Re: Network analyst public transit tool Prepare ti...

Re: How do I fill in the blank areas where streets...

Re: Route Solver - Add Locations - Convert Model B...