[GRASS-dev] [GRASS GIS] #3485: Introduce a new 64-bit integer raster data type

[Newcomb, Doug]

Yes!

On Mon, Jan 29, 2018 at 4:08 AM, GRASS GIS <trac at osgeo.org> wrote:

> #3485: Introduce a new 64-bit integer raster data type
> ---------------------------+-------------------------
>  Reporter:  mlennert       |      Owner:  grass-dev@…
>      Type:  enhancement    |     Status:  new
>  Priority:  normal         |  Milestone:  8.0.0
> Component:  LibRaster      |    Version:  svn-trunk
>  Keywords:  raster 64-bit  |        CPU:  Unspecified
>  Platform:  Unspecified    |
> ---------------------------+-------------------------
>  From #3084:
>
>  "Most importantly, a GRASS raster format for 64-bit signed integer. Note
>  that GDAL does not support 64-bit signed or unsigned integers. The reason
>  is probably that a portable implementation of 64-bit integers is not so
>  easy. Regarding GRASS raster processing, the need for 64-bit integers
>  usually arises only for raster maps with more than 2,147,483,647 cells
>  which in turn usually requires Large File Support (LFS). Therefore the
>  check for the availability of a 64-bit integer could be coupled to LFS. If
>  support for 64-bit signed integer raster maps (say, LCELL) could be added
>  to GRASS, users would need to stick to GRASS since GDAL raster export of
>  64-bit integers is not available. Interesting idea."
>
>  and
>
>  "As of r68944, i.segment supports regions with more than 2,147,483,647
>  cells, but the number of final objects must not exceed 2,147,483,647. This
>  can only be solved by introducing a new 64 bit integer data type in
>  addition to CELL, FCELL, DCELL, something for GRASS 8 maybe."
>
> --
> Ticket URL: <https://trac.osgeo.org/grass/ticket/3485>
> GRASS GIS <https://grass.osgeo.org>
>
>
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>



-- 
Doug Newcomb
USFWS
551F Pylon Dr
Raleigh, NC
919-856-4520 ext. 14 doug_newcomb at fws.gov
---------------------------------------------------------------------------------------------------------
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