bpthomp

Landscan help -- Landscan + panel data

Discussion created by bpthomp on Mar 25, 2014
Latest reply on Mar 28, 2014 by SWalbridge-esristaff
Hi all,

I'm a research interested in changes in population across time, and specifically, migration. I've been interested in using the Landscan data to determine exactly where people are from year to year, but I'm a bit unfamiliar with the data. I was just wondering if you guys might be able to help me with some problems I've been having.

According to the Landscan FAQ, the data get more precise every year, and thus cross-year comparisons are not recommended. However, I was just wondering if there was some pattern to the improvements? I.e. could the improvements in precision be modeled, or possibly addressed using a time-fixed effects model, if I have panel data in other variables (I'd mostly be treating the Landscan counts as a dependent variable)? Does the model used to come up with the population counts change from year to year, or is it mostly the input data from the satellite which becomes finer and finer every year?

Again, I'm really new at this data, so if I've said anything that could be answered via referral, I'd appreciate anything pointing me in the right direction. It doesn't seem like there are a lot of resources to answer specific questions like I have online, but I could just be looking in the wrong place.

Thanks for your time,
Ben

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