.TH t.vect.what.strds 1grass "" "GRASS 7.8.5" "GRASS GIS User's Manual"
.SH NAME
\fI\fBt.vect.what.strds\fR\fR  \- Stores raster map values at spatial and temporal positions of vector points as vector attributes.
.SH KEYWORDS
temporal, sampling, vector, time
.SH SYNOPSIS
\fBt.vect.what.strds\fR
.br
\fBt.vect.what.strds \-\-help\fR
.br
\fBt.vect.what.strds\fR \fBinput\fR=\fIname\fR \fBstrds\fR=\fIname\fR  [\fBcolumn\fR=\fIstring\fR]  \fBmethod\fR=\fIstring\fR  [\fBwhere\fR=\fIsql_query\fR]   [\fBt_where\fR=\fIsql_query\fR]   [\fBsampling\fR=\fIname\fR[,\fIname\fR,...]]   [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-\-help\fR" 4m
.br
Print usage summary
.IP "\fB\-\-verbose\fR" 4m
.br
Verbose module output
.IP "\fB\-\-quiet\fR" 4m
.br
Quiet module output
.IP "\fB\-\-ui\fR" 4m
.br
Force launching GUI dialog
.SS Parameters:
.IP "\fBinput\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name of the input space time vector dataset
.IP "\fBstrds\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name of the input space time raster dataset
.IP "\fBcolumn\fR=\fIstring\fR" 4m
.br
Name of the vector column to be created and to store sampled raster values
.br
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
.IP "\fBmethod\fR=\fIstring\fR \fB[required]\fR" 4m
.br
Aggregate operation to be performed on the raster maps
.br
Options: \fIdisabled, average, count, median, mode, minimum, min_raster, maximum, max_raster, stddev, range, sum, variance, diversity, slope, offset, detcoeff, quart1, quart3, perc90, quantile, skewness, kurtosis\fR
.br
Default: \fIdisabled\fR
.IP "\fBwhere\fR=\fIsql_query\fR" 4m
.br
WHERE conditions of SQL statement without \(cqwhere\(cq keyword
.br
Example: income < 1000 and population >= 10000
.IP "\fBt_where\fR=\fIsql_query\fR" 4m
.br
WHERE conditions of SQL statement without \(cqwhere\(cq keyword used in the temporal GIS framework
.br
Example: start_time > \(cq2001\-01\-01 12:30:00\(cq
.IP "\fBsampling\fR=\fIname[,\fIname\fR,...]\fR" 4m
.br
The method to be used for sampling the input dataset
.br
Options: \fIstart, during, overlap, contain, equal, follows, precedes\fR
.br
Default: \fIstart\fR
.SH DESCRIPTION
The module \fIt.vect.what.strds\fR samples a space time raster dataset
(STRDS) at the spatio\-temporal locations of a space time vector dataset (STVDS).
.SH EXAMPLE
The example is based on the space time vector dataset \(dqprecip_stations@climate_2009_2012\(dq
created in the t.vect.observe.strds example.
In the example below, the module fills the new column \(dqnew_temp\(dq with values
extracted from the \(dqtempmean_monthly\(dq space time raster dataset:
.br
.nf
\fC
t.vect.what.strds input=precip_stations@climate_2009_2012 \(rs
                  strds=tempmean_monthly@climate_2009_2012 \(rs
                  column=new_temp method=average
\fR
.fi
.SH SEE ALSO
\fI
r.univar,
v.univar,
v.what.rast,
v.what.rast3,
v.what.strds,
v.what.vect,
t.create,
t.info
\fR
.SH AUTHOR
Sören Gebbert, Thünen Institute of Climate\-Smart Agriculture
.SH SOURCE CODE
.PP
Available at: t.vect.what.strds source code (history)
.PP
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.PP
© 2003\-2020
GRASS Development Team,
GRASS GIS 7.8.5 Reference Manual