Provided by: grass-doc_7.6.0-1_all bug

NAME  - Converts a space time raster dataset into a space time vector dataset


       temporal, conversion, raster, vector, time

SYNOPSIS --help    [-ntszbv]   input=name   output=name    [where=sql_query]    type=string
       basename=string   [suffix=string]    [column=string]    [nprocs=integer]     [--overwrite]
       [--help]  [--verbose]  [--quiet]  [--ui]

           Register empty vector maps

           Do not create attribute tables

           Smooth corners of area features

           Write raster values as z coordinate
           Table is not created. Currently supported only for points.

           Do not build vector topology
           Name must be SQL compliant

           Use raster values as categories instead of unique sequence (CELL only)

           Allow output files to overwrite existing files

           Print usage summary

           Verbose module output

           Quiet module output

           Force launching GUI dialog

       input=name [required]
           Name of the input space time raster dataset

       output=name [required]
           Name of the output space time vector dataset

           WHERE  conditions  of  SQL  statement without ’where’ keyword used in the temporal GIS
           Example: start_time > ’2001-01-01 12:30:00’

       type=string [required]
           Output feature type
           Options: point, line, area

       basename=string [required]
           Basename of the new generated output maps
           A numerical suffix separated by an underscore will be  attached  to  create  a  unique

           Suffix  to  add  at  basename:  set  ’gran’  for granularity, ’time’ for the full time
           format, ’num’ for numerical suffix with a specific number of digits (default %05)
           Default: gran

           Name of attribute column to store value
           Default: value

           Number of processes to run in parallel, more than 1 process  works  only  in
           conjunction with flag -t
           Default: 1

DESCRIPTION is designed to convert a space time raster dataset into a space time vector
       dataset. This module works  as  a  front-end  to  and  therefore  supports  all
       parameter  of this module. Hence, all raster map layers in a space time raster dataset are
       passed to that converts them into vector map layers (using point,line or area as
       conversion  criteria).   Please  refer  to  the  documentation  for  a detailed
       description of the raster to vector conversion options.   The  new  generated  vector  map
       layers  will  be  registered  in the output space time vector dataset, using the same time
       stamps as their raster map layer origins.

       This module supports the parallel processing of module instances. The number  of
       parallel  processes  can  be  set with the nprocs option.  However, this will only work in
       conjunction with the -t flag, that avoids the creation of attribute tables.  The  parallel
       creation of attribute tables is not supported.

       The where option allows selecting subsets of the input space time raster dataset.

       The flag -n can be used to force the registration of empty vector map layers. Empty vector
       maps may occur in case that empty raster map layers should be converted  into  vector  map



       Sören Gebbert, Geoinformatikbüro Dassau

       Last changed: $Date: 2015-09-05 18:13:18 +0200 (Sat, 05 Sep 2015) $


       Available at: source code (history)

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