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Thank you for your reply, Dan. I assume that since Emerging Hot Spot Analysis is a tool for identifying trends that I should be able to do just that with some confidence or at least a logical explanation of why the trends I see are different depending on the length of the aggregation period. If I use the default Neighborhood Time Step of 1, I see a trend that would lead me to believe that a particular area of concern is a Diminishing hot spot. One thing I noticed when examining the Emerging Hot Spot results when using a time step of 3 is that 65% of the bins coded as Persistent Hot Spots have a Z-score that is less than zero. I do not know if this is coincidence or not but those are nearly the same bins that are coded as Diminishing Hot Spots when I use a time step of 1. This would lead me to believe/conclude that these particular bins are tipping towards a downward trend and that it would be valid to use the results from the 1 year aggregation period (time step of 1) to identify trends in my data. Agree or disagree?
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11-22-2016
04:43 PM
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When using the Emerging Hot Spot Analysis (from within the Space Time Pattern Mining Tools in ArcGIS Pro 1.3.1) on 10 years worth of inner city crime data, I notice that I get significantly different results when I change the Neighborhood Time Step. For instance, when I use 1 year as my Neighborhood Time Step, large areas are coded as Diminishing Hot Spots but when I use 2 years many of these spots change to Persistent Hot Spots. When I use 3 years, the entire area is coded as a Persistent Hot Spot (I also have a larger concentration of Intensifying Hot Spots). I am unsure of how to interpret these results. Any help in interpreting these results as well as guidance on how to choose and justify a time step interval would be appreciated. FYI, there has been an overall reduction in the occurrence of crimes from 2006 (232,577) to 2015 (182,349) although some neighborhoods/census tracts have seen an increase.
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11-22-2016
07:23 AM
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Just in case my device fails, is there a way to export the survey that I've designed to a Word or PDF format. I'd like to be able to conduct the survey manually but I really don't want to have to recreate it and maintain it in another format. I tried to copy/paste it from Survey123ConnectBeta but it won't even let me highlight the text. The closest I've got is capturing multiple screenshots in Survey123ConnectBeta and pasting them as images into Word but I'm not happy with it. Thanks, Teri
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05-16-2016
01:03 PM
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