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seen Jul 8 at 9:44

Jul
2
awarded  Curious
May
31
accepted Literature on bias in spatial weights matrix
May
30
asked Literature on bias in spatial weights matrix
May
3
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
For measuring light intensity I think that's a good start.
Apr
25
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
Have you checked the documentation of the data?
Apr
19
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
I can't speak for Wes of course but what I think he means to say is that in 90% of the cases the information from these kind of tables isn't really relevant. If this is also true in your case depends of course on what kind of analysis you want to do.
Apr
17
awarded  Yearling
Apr
15
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
What do you need to know?
Apr
9
accepted Calculating spatial lags per year in R
Apr
9
revised Calculating spatial lags per year in R
Improved code
Apr
9
answered Calculating spatial lags per year in R
Mar
21
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
Yes, so maybe for some more background information on the use of night light data you can consult the paper by Henderson et al. (2012), AER, "Measuring Economic Growth from Outer Space".
Mar
21
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
I guess this is the NOAA night light data you're working with, right? If so than QGIS counts the value of each pixel, which is between 0 and 63 (if I remember correctly), and adds them up.
Mar
21
comment Calculating spatial lags per year in R
To be honest I am not entirely sure how this works.
Mar
20
comment What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
Yes, so the zonal statistics looks at the number of lightpoints which are represented by pixels with a value up to 63 I believe. So it counts the number of pixels within the zone, adds all the values together, and calculates the mean.
Mar
20
answered What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
Mar
20
revised What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
Formatted code
Mar
20
suggested suggested edit on What do “count”, “mean”, and “sum” in QgsZonalStatistics mean?
Mar
18
awarded  Promoter
Mar
17
revised Calculating spatial lags per year in R
Changed some wording