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t.vect.db.select(1grass)


NAME

   t.vect.db.select   -  Prints  attributes of vector maps registered in a
   space time vector dataset.

KEYWORDS

   temporal, attribute table, vector, database, select, time

SYNOPSIS

   t.vect.db.select
   t.vect.db.select --help
   t.vect.db.select         input=name           [columns=name[,name,...]]
   [separator=character]          [layer=string]         [where=sql_query]
   [t_where=sql_query]   [--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

   columns=name[,name,...]
       Name of attribute column(s)

   separator=character
       Field separator character between the output columns
       Special characters: pipe, comma, space, tab, newline
       Default: pipe

   layer=string
       Layer number or name
       Vector features can have category values in different layers.  This
       number  determines  which  layer  to use. When used with direct OGR
       access this is the layer name.
       Default: 1

   where=sql_query
       WHERE conditions of SQL statement without 'where' keyword
       Example: income < 1000 and inhab >= 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'

DESCRIPTION

   The module t.vect.db.select prints attributes of vector maps registered
   in a space time vector dataset.

EXAMPLE

   The example is querying the shoreline space time dataset:
   t.vect.db.select input=shoreline
   start_time|end_time|cat|DESCR|SOURCE|DATE
   1849|1873|1|T-736|NOAA/USGS|01/01/1858
   1849|1873|2|T-657|NOAA/USGS|01/01/1857
   1849|1873|3|T-381(2)|NOAA/USGS|01/01/1852
   1849|1873|4|T-381(1)|NOAA/USGS|01/01/1852
   1849|1873|5|T-381(1)|NOAA/USGS|01/01/1852
   ...
   2009||44|2009 USDA NAIP|2009-07-11|VA, SAND, Wet / Dry
   2009||45|2009 USDA NAIP|2009-07-11|Carolina Beach, SAND, Wet / Dry
   2009||46|2009 USDA NAIP|2009-07-11|Carolina Beach, REVETMENT-ROCK, Hard Structure
   2009||47|2009 USDA NAIP|2009-07-11|Fort Fisher, REVETMENT-ROCK, Hard Structure
   In the following example it print only DATE and SOURCE columns for data
   before 1900-01-01.
   t.vect.db.select input=shoreline column=DATE,SOURCE t_where="start_time < 1900"
   start_time|end_time|DATE|SOURCE
   1849|1873|01/01/1858|NOAA/USGS
   1849|1873|01/01/1857|NOAA/USGS
   1849|1873|01/01/1852|NOAA/USGS
   1849|1873|01/01/1852|NOAA/USGS
   ...
   1849|1873|01/01/1860|NOAA/USGS
   1849|1873|01/01/1860|NOAA/USGS
   1849|1873|01/01/1873|Coastal Carolina University
   1849|1873|01/01/1873|Coastal Carolina University
   1849|1873|01/01/1873|Coastal Carolina University

SEE ALSO

    t.create, t.info

AUTHOR

   Sren Gebbert, Thnen Institute of Climate-Smart Agriculture

   Last changed: $Date: 2015-09-22 10:10:38 +0200 (Tue, 22 Sep 2015) $

SOURCE CODE

   Available at: t.vect.db.select source code (history)

   Main index | Temporal index | Topics index | Keywords index | Graphical
   index | Full index

    2003-2016 GRASS Development Team, GRASS GIS 7.2.0 Reference Manual



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