{"id":24826,"date":"2024-08-23T09:02:57","date_gmt":"2024-08-23T07:02:57","guid":{"rendered":"https:\/\/blog.ptvgroup.com\/?p=24826"},"modified":"2025-05-08T11:32:53","modified_gmt":"2025-05-08T09:32:53","slug":"scenario-manager-in-vissim-and-viswalk-part-ii-5","status":"publish","type":"post","link":"https:\/\/blog.ptvgroup.com\/en\/technologyplus\/scenario-manager-in-vissim-and-viswalk-part-ii-5\/","title":{"rendered":"Scenario Manager in Vissim and Viswalk \u2013 Part II.5"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]<\/p>\n

Pedestrians, Fundamentals, Evaluations, Tipps and Tricks<\/h3>\n

Having touched nearly all aspects of scenario managing in PTV Vissim and Viswalk in the previous articles\u00a0 Scenario Management: one of the key features for traffic simulation<\/a>, and Scenario Manager in Vissim and Viswalk \u2013 Part II.1<\/a>, Part II.2<\/a>, Part II.3<\/a>, and Part II.4<\/a> we end this summer series on scenario managing with a more philosophical topic. \u201cPhilosophical\u201d, because this is about raising awareness for an aspect which can have an impact on productivity, but in the end, you have to find your own answer and way.<\/p>\n

Creating, Changing or Assigning in Modifications?<\/h2>\n

It is possible to create objects in modifications, to change them, as well as to assign them such that they take or change their role for the simulation model. For example, to change the desired walking speeds of pedestrians, it is in principle possible<\/p>\n

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  1. to change the data of a speed distribution \u2013 which is already assigned to a pedestrian composition \u2013 as part of a modification,<\/li>\n
  2. or to create a new speed distribution and assign it to a pedestrian composition both as part of a modification,<\/li>\n
  3. or to create the speed distribution right in the base network and only assign it to a pedestrian composition (existing or newly created) as part of a Modification,<\/li>\n
  4. or to create the speed distribution as well as a pedestrian composition right in the base network and only assign the composition to an input as part of a modification,<\/li>\n
  5. or to create the speed distribution, pedestrian composition and even the input in the base network, such that there are two Inputs instead of one on each area which is supposed to be an origin.<\/li>\n<\/ol>\n

    [\/vc_column_text][vc_single_image image=”24835″ img_size=”1025×200″ add_caption=”yes”][\/vc_column][\/vc_row]<\/p>\n\n\n

    [vc_row][vc_column][vc_column_text]There is not a single correct or best way of modelling and managing this in modifications, however, one can come up with principles which can help to decide how modelling steps should be shared between the Base Network and the modifications. There are, however, reasonable principles that can serve for orientation. Take for example:<\/p>\n