1t.vect.univar(1)              Grass User's Manual             t.vect.univar(1)
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NAME

6       t.vect.univar   -  Calculates  univariate  statistics of attributes for
7       each registered vector map of a space time vector dataset
8

KEYWORDS

10       temporal, statistics, vector, time
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SYNOPSIS

13       t.vect.univar
14       t.vect.univar --help
15       t.vect.univar [-eu] input=name   [output=name]    [layer=string]   col‐
16       umn=name     [twhere=sql_query]     [where=sql_query]     [type=string]
17       [separator=character]   [--overwrite]  [--help]  [--verbose]  [--quiet]
18       [--ui]
19
20   Flags:
21       -e
22           Calculate extended statistics
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24       -u
25           Suppress printing of column names
26
27       --overwrite
28           Allow output files to overwrite existing files
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30       --help
31           Print usage summary
32
33       --verbose
34           Verbose module output
35
36       --quiet
37           Quiet module output
38
39       --ui
40           Force launching GUI dialog
41
42   Parameters:
43       input=name [required]
44           Name of the input space time vector dataset
45
46       output=name
47           Name for output file
48
49       layer=string
50           Layer number or name
51           Vector  features can have category values in different layers. This
52           number determines which layer to use. When  used  with  direct  OGR
53           access this is the layer name.
54           Default: 1
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56       column=name [required]
57           Name of attribute column
58
59       twhere=sql_query
60           WHERE  conditions  of SQL statement without ’where’ keyword used in
61           the temporal GIS framework
62           Example: start_time > ’2001-01-01 12:30:00’
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64       where=sql_query
65           WHERE conditions of SQL statement without ’where’ keyword
66           Example: income < 1000 and population >= 10000
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68       type=string
69           Input feature type
70           Options: point, line, boundary, centroid, area
71           Default: point
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73       separator=character
74           Field separator character between the output columns
75           Special characters: pipe, comma, space, tab, newline
76           Default: pipe
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DESCRIPTION

79       The module t.vect.univar computes univariate statistics of a space time
80       vector dataset based on a single attribute row.
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EXAMPLE

83       The example is based on the t.vect.observe.strds example; so create the
84       precip_stations space time vector dataset and after run  the  following
85       command:
86       t.vect.univar input=precip_stations col=month
87       id|start|end|n|nmissing|nnull|min|max|range|mean|mean_abs|population_stddev|population_variance|population_coeff_variation|sample_stddev|sample_variance|kurtosis|skewness
88       precip_stations_monthly@climate_2009_2012|2009-01-01 00:00:00|2009-02-01 00:00:00|132|0|4|-2.31832|7.27494|9.59326|3.44624|3.5316|1.79322|3.21564|0.520341|1.80005|3.24019|0.484515|-0.338519
89       precip_stations_monthly@climate_2009_2012|2009-02-01 00:00:00|2009-03-01 00:00:00|132|0|4|-0.654152|7.90613|8.56028|5.47853|5.48844|1.73697|3.01708|0.317051|1.74359|3.04011|0.875252|-1.0632
90       ....
91       precip_stations_monthly@climate_2009_2012|2012-10-01 00:00:00|2012-11-01 00:00:00|132|0|4|9.67596|18.4654|8.78945|14.945|14.945|1.90659|3.6351|0.127574|1.91386|3.66285|-0.0848967|-0.700833
92       precip_stations_monthly@climate_2009_2012|2012-11-01 00:00:00|2012-12-01 00:00:00|132|0|4|3.56755|10.6211|7.05357|7.72153|7.72153|1.33684|1.78715|0.173132|1.34194|1.8008|0.90434|-0.863935
93       precip_stations_monthly@climate_2009_2012|2012-12-01 00:00:00|2013-01-01 00:00:00|132|0|4|3.04325|11.6368|8.5935|8.20147|8.20147|1.78122|3.17275|0.217183|1.78801|3.19697|-0.177991|-0.501295
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SEE ALSO

96        t.create, t.info
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AUTHOR

99       Sören Gebbert, Thünen Institute of Climate-Smart Agriculture
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SOURCE CODE

102       Available at: t.vect.univar source code (history)
103
104       Main index | Temporal index | Topics index | Keywords index | Graphical
105       index | Full index
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107       © 2003-2019 GRASS Development Team, GRASS GIS 7.8.2 Reference Manual
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111GRASS 7.8.2                                                   t.vect.univar(1)
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