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Missing node-zone assignment information #42

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sharathmn opened this issue Jan 20, 2021 · 6 comments
Closed

Missing node-zone assignment information #42

sharathmn opened this issue Jan 20, 2021 · 6 comments

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@sharathmn
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sharathmn commented Jan 20, 2021

The Winnipeg dataset has 147 zones and 1052 nodes. How to decipher the node-zone relationship from the data? Demand between zones is provided, but not the node-zone assignment.

Any help in this regard would be greatly appreciated.

@pedrocamargo
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@sharathmn In all these instances, the node IDs ARE the zone IDs when they are centroids, so zone 1 is centroid 1.

In (very) simplified terms, if a node is not in the demand matrix, then it is not a centroid.

@sharathmn
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@pedrocamargo, this explains the node-zone assignment for 147 nodes. What about the remaining 905 nodes? Which zone do they belong to?

@pedrocamargo
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There are no zone polygons associated with these instances, @sharathmn , so there is no way to retrieve that information. Please refer to the specification of the format. https://github.com/bstabler/TransportationNetworks#tntp-data-format

@pedrocamargo
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I would recommend closing this issue as it is just a question, @bstabler

@sharathmn
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There are no zone polygons associated with these instances, @sharathmn , so there is no way to retrieve that information. Please refer to the specification of the format. https://github.com/bstabler/TransportationNetworks#tntp-data-format

Thank you @pedrocamargo for your reply. Its a pity a good dataset remains unusable!

@pedrocamargo
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@sharathmn, The dataset use-case is purposefully narrow. In the future, I would recommend expanding on what and WHY you are looking for, as such courtesy is especially welcome when we are talking about voluntary efforts such as this.

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