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I have a gridded raster map produced from the NASA precipitation data over a country. The pixel type of the map is in floating point with 32 Bit pixel depth. Therefore, it does not have any attribute table. Now I have two questions:

  1. If I use the Int command in the ArcToolbox to convert the map to Integer point pixel type I lose lots of information of the gridded data. What is the solution to convert it to Integer point pixel type without losing so much information. The data are rainfall amount in 10km *10km grid points and the values are mainly different in regards to their decimal and removing that convert the map into just 4 categories!

  2. In the original map with the floating point with 32 Bit pixel depth, how can I extract the 10km *10km coordinates? It is too many coordinates (above 15000 grids) and I need a solution to extract it. Converting to ASCII did not help, by the way.

closed as too broad by FelixIP, mgri, whyzar, Midavalo Feb 26 '17 at 20:58

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • Using gdal_translate you can convert the grid into ASCII XYZ GRID, you'll get XYZ coordinates of grid point in a row of the output file. – Zoltan Feb 25 '17 at 16:47
  • Thanks. But I am not familiar with the gdal_translate and coding and would like to know the same approach of gdal in ArcGIS 10.2 that I am using to prepare the maps. – irrigation Feb 25 '17 at 20:44
  • You need not coding to use gdal_translate it is a ready to use program, see gdal.org/gdal_translate.html – Zoltan Feb 25 '17 at 21:04
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    How To: Convert a raster dataset to an XYZ table Summary It is explained here @ support.esri.com/technical-article/000007693 – irrigation Feb 25 '17 at 23:12
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    What is it exactly that you want? Having the raster table and ability to compute coordinates are 2 different things. Please explain your objective and software you prefer to use. – FelixIP Feb 26 '17 at 19:34