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  1. How does GPWv4 compare to previous versions of GPW?

  2. When will the rasters of census variables (sex, age, and urban/rural designation) be released?

  3. We have been using the GPW data extensively, but one question I cannot understand is why the data appear not to be available in database format rather than GIS format.

  4. I am looking for gridded population data and elevation data on the same grid. I saw on your website that you have compiled a population dataset - is there an elevation dataset that can go with this, and can you help me obtain it?

  5. I download GRUMP 2000 population count data set. It sees that maximum population count is 1,346,772 in the cell of that data set. I would like to know that is right or not, because I think that the value is very large. Could you give me advice about maximum population count in GRUMP?

  6. What is the projection used for the GPWv4 data?

  7. In UN-adjusted 2000 density data, how is the data adjusted to match UN totals ? The Africa UN-adjusted map shows some significant chunks of zero density (e.g, much of Gabon) that don't seem realistic.

  8. How was the Data Context layer created?

  9. How should I cite the GPWv4 data?

  10. How should I cite the GPW3 data?

  11. What source data is used in GPWv4?

  12. What year(s) is this data from?

  13. What are the restrictions on use and redissemination of data?

  14. What are the restrictions on use and redissemination of data?

  15. I see you have country-level estimates for the low elevation coastal zone data. Is it possible to get the gridded data?

  16. I was excited to see you have anthropogenic biome data, which would be useful in my research. What are the differences between the Anthropogenic Biomes of the World, v1 data and the Anthropogenic Biomes of the World, v2 data for 2000?

  17. How is a global raster created from tabular census data and boundaries?

  18. What is the projection used for the data?

  19. Why can't I make the Import71 work with the GPW data?

  20. What years are the data available for?

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