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NAME

       t.vect.what.strds   - Stores raster map values at spatial and temporal positions of vector
       points as vector attributes.

KEYWORDS

       temporal, sampling, vector, time

SYNOPSIS

       t.vect.what.strds
       t.vect.what.strds --help
       t.vect.what.strds input=name strds=name  [column=string]  method=string  [where=sql_query]
       [t_where=sql_query]     [sampling=name[,name,...]]     [--help]    [--verbose]   [--quiet]
       [--ui]

   Flags:
       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       input=name [required]
           Name of the input space time vector dataset

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

       column=string
           Name of the vector column to be created and to store sampled raster values
           The use of a column name forces t.vect.what.rast to sample only values from the  first
           map found in an interval. Otherwise the raster map names are used as column names

       method=string [required]
           Aggregate operation to be performed on the raster maps
           Options:  disabled,  average,  count,  median,  mode,  minimum,  min_raster,  maximum,
           max_raster, stddev, range, sum, variance, diversity, slope, offset, detcoeff,  quart1,
           quart3, perc90, quantile, skewness, kurtosis
           Default: disabled

       where=sql_query
           WHERE conditions of SQL statement without ’where’ keyword
           Example: income < 1000 and population >= 10000

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

       sampling=name[,name,...]
           The method to be used for sampling the input dataset
           Options: start, during, overlap, contain, equal, follows, precedes
           Default: start

DESCRIPTION

       The  module  t.vect.what.strds  samples  a  space  time  raster  dataset  (STRDS)  at  the
       spatio-temporal locations of a space time vector dataset (STVDS).

EXAMPLE

       The  example is based on the space time vector dataset "precip_stations@climate_2009_2012"
       created in the t.vect.observe.strds example.  In the example below, the module  fills  the
       new  column "new_temp" with values extracted from the "tempmean_monthly" space time raster
       dataset:
       t.vect.what.strds input=precip_stations@climate_2009_2012 \
                         strds=tempmean_monthly@climate_2009_2012 \
                         column=new_temp method=average

SEE ALSO

        r.univar,  v.univar,  v.what.rast,  v.what.rast3,  v.what.strds,  v.what.vect,  t.create,
       t.info

AUTHOR

       Sören Gebbert, Thünen Institute of Climate-Smart Agriculture

       Last changed: $Date: 2016-10-27 23:20:55 +0200 (Thu, 27 Oct 2016) $

SOURCE CODE

       Available at: t.vect.what.strds source code (history)

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       © 2003-2019 GRASS Development Team, GRASS GIS 7.6.1 Reference Manual