Geografic-Information-System/temporal/t.rast.univar/t.rast.univar.html

<h2>DESCRIPTION</h2>

<em>t.rast.univar</em> calculates univariate statistics from the
non-null cells for each registered raster map of a space time raster
dataset.
<p>
By default it returns the name of the map, the start and end date of
dataset and the following values: mean, minimum and maximum vale,
mean_of_abs, standard deviation, variance, coeff_var, number of null
cells, total number of cell.
<p>
Using the <em>e</em> flag it can calculate also extended statistics:
first quartile, median value, third quartile and percentile 90.

<h2>EXAMPLE</h2>

Obtain the univariate statistics for the raster space time dataset
"tempmean_monthly" (precision reduced to 2 decimals in this example):

<div class="code"><pre>
t.rast.univar -e tempmean_monthly
id|start|end|mean|min|max|mean_of_abs|stddev|variance|coeff_var|sum|null_cells|cells|first_quartile|median|third_quartile|percentile_90
2009_01_tempmean@climate_2009_2012|2009-01-01 00:00:00|2009-02-01 00:00:00|3.90|-3.38|7.43|3.95|1.79|3.20|45.91|1977967.31|503233|1010600|2.80|3.92|5.21|6.23
2009_02_tempmean@climate_2009_2012|2009-02-01 00:00:00|2009-03-01 00:00:00|5.91|-1.82|8.01|5.92|1.63|2.65|27.53|2999555.60|503233|1010600|5.44|6.26|7.07|7.48
...
2012_11_tempmean@climate_2009_2012|2012-11-01 00:00:00|2012-12-01 00:00:00|8.03|1.79|10.91|8.03|1.32|1.73|16.41|4072472.77|503233|1010600|7.49|8.13|8.96|9.48
2012_12_tempmean@climate_2009_2012|2012-12-01 00:00:00|2013-01-01 00:00:00|8.71|1.76|11.98|8.71|1.72|2.95|19.74|4418403.77|503233|1010600|7.84|8.95|9.99|10.67
</pre></div>

<h2>SEE ALSO</h2>

<em>
<a href="t.create.html">t.create</a>,
<a href="t.info.html">t.info</a>
</em>

<h2>AUTHOR</h2>

S&ouml;ren Gebbert, Th&uuml;nen Institute of Climate-Smart Agriculture

<p><i>Last changed: $Date$</i>