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location Everett, WA
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visits member for 3 years, 6 months
seen Dec 29 '12 at 2:25

Independent Technical Consultant & College Instructor


Apr
23
awarded  Yearling
Apr
21
comment Free land use data for Manhattan
You're welcome. Yes, using the parcel coverage would be a lot more precise, but also not free.
Apr
21
comment Free land use data for Manhattan
Really, if you have questions about how to analyze spatial data now that you have some to work with, they would best be asked separately from the original question about how to obtain the data. A detailed answer may depend in part on which tools you are using.
Apr
21
comment Free land use data for Manhattan
You will need to read the local zoning code to make sense of the designations; I know nothing about NYC zoning but R followed by a number typically indicates residential, M followed by a number might indicate industrial (M is presumably for manufacturing), C might indicate commercial, and so on. As for the approah that I suggested, it's simply the quickest (and arguably dirtiest) way to reach your stated goal of determining the "fraction of residential, commercial, and other land use" per census tract. If you don't start with block groups or parcels, then there will be no "fraction" per tract!
Apr
21
comment How does IP geocoding work?
Here's the answer: serverfault.com/questions/49765/how-does-subnetting-work
Apr
21
awarded  Supporter
Apr
21
revised Free land use data for Manhattan
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21
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21
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Apr
21
answered Free land use data for Manhattan
Apr
21
comment How does IP geocoding work?
@NathanW I strongly suspect that law enforcement, writ large, has access to better and more granular databases than "IP2Location Lite Free Edition," and with a warrant anything is possible, but you are correct that it is usually not quite that easy.
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21
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21
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21
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21
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21
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21
awarded  Editor
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21
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Apr
21
answered How does IP geocoding work?