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Select cells contiguous to the pre-selected cell

Permanently deleted user
I want to be able to select only the contiguous cells for my selected cell. Can someone please suggest me a way? I was looking for something like a relationship task to query the boundary sharing cells, however, I cannot find such tool in the workflow.

 

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6 comments

Date Votes
  • John Nerge
    Here's a basic workflow that demos a way to do this:

     

    https://drive.google.com/open?id=1ONl_sIxrJz9S-UOpOyEakwE-h-Fn2ZaA

     

    What you need to provide in the Variables section:

     

    1) your map service ID

     

    2) your layer name

     

    3) your geometry service

     

    I designed the workflow to have the user click on the parcel they want to use, but you could also modify it to run as a workflow with arguments from a map tip (the first query task would just need to use a where clause instead of geometry to create the first feature set).
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  • Permanently deleted user
    Hi John, 

     

    Thank you so much for the reply. If I understood your correctly, it will still provide me with the corner cells (croosed off). As a requirement, our client does not want the users to be able to select those cells, only the cells sharing a boundary. Do you have any suggestion for this scenario? Your help is very much appreciated.

     

    Thanks,

     

    Amrit
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  • John Nerge
    Ah, sorry, I missed that critical requirement.

     

    Hmm, that's quite a tricky one. I played around a little bit with the sample workflow and tried replacing the Buffer Task with a copy of the Union Task further down, but that didn't matter.

     

    It sounds like you're trying to replicate the "Share a line segment with" functionality of the select by location tool from ArcMap. I've got pretty much no experience with bringing geoprocessing services into a workflow, but maybe that's an option?
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  • Permanently deleted user
    Hi John, 

     

    Thank you for the suggestion. That is exactly what I wish to do: replicating the "Share a line segment with" scenario in Geocortex.
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  • Berend Veldkamp
    It looks like the parcels to the East and South do not even share a boundary, so "Share  line segment" wouldn't work there.

     

    If all parcels are more or less equal in size, you could constuct a (multiline) geometry that goes through the center of a parcel, and slightly overshoots its boundary. The multiline would consist of two parts, one running E-W, and one N-S.

     

    Another option would be to query by attribute. There seems to be some logic to the parcels numbering scheme (The"SE-19" part), so it should be possible to determine the bounding parcel's codes.
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  • Berend Veldkamp
    Come to think of it, if the data doesn't change too often, it may be an idea to pre-calculate a table with neighbouring parcels, e.g. PARCEL NEIGHBOUR NW-19 NE-19 NW-19 SW-19 NE-19 NW-20 NE-19 SE-19 NE-19 NW-19 ... SE-19 NE-19 SE-19 SW-20 SE-19 NE-18 SE-19 SW-19 ...

     

    Query this table first, and use the results to query the actual parcel table, e.g "PARCELCODE IN (...).

     

     
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