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Emerging Hot Spot Analysis

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05-09-2022 06:05 AM
Lacin_Ibrahim
by
New Contributor
‎05-09-2022 06:05 AM

Hi,

I am a little bit confused about the define global window parameter.
My understanding is if I choose the entire cube, the Emerging Hot Spot Analysis tool starts comparing from the first day, and the Individual time step chooses the last day of my data to compare with.
The neighborhood time step (NTS) compares the phases between (kinda middle or whenever I define).

My data has daily values for 45 days and NTS is set to 1 day. So, are results expected to be the same as the Ind. time step result? 

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LaurenGriffin
by Esri Contributor
Esri Contributor
‎05-09-2022 07:49 AM

Hi,

If you choose Entire Cube, the tool conceptually compares the mean of each bin in the space time cube to the mean for all bins in the space time cube and determines if the means are significantly different (it's a bit more complicated than that, taking the number of features and variance into account, not just the mean).

Check out this video, especially beginning at 5:37. https://www.youtube.com/watch?v=9VDRYBvOoDI&list=PLGZUzt4E4O2LuV0vuH74WN6j9nxv0jUty&index=5

That video is part of a learning path about space time analysis, in case it's useful: https://learn.arcgis.com/en/paths/spatio-temporal-analysis-of-covid-19-daily-confirmed-cases/ 

Best wishes,

Lauren

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