[R] Help needed to format data for boxplot time-series

Wed Jun 1 14:23:08 CEST 2016

Hi

It is preferable to use output of

dput(yourdata) or dput(yourdata[1:20,])

so that we can use your data.

From your description maybe

boxplot(split(yourdata$value, yourdata$valid_time))

can give you what you want.

Regards
Petr

> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Thomas
> Adams
> Sent: Wednesday, June 1, 2016 2:07 PM
> To: r-help at r-project.org
> Subject: [R] Help needed to format data for boxplot time-series
>
> All:
>
> I have used R in combination with GRASS GIS spatial data (using spgrass)
> many times in the past to generate a 'time series' of boxplots, to show
> variations over time. But I have a new problem, not involving spatial data, but
> rather, true time-series data (snippet shown below). So, what I want to do is
> to generate a 'time-series' of boxplots based on the column 'valid_time' for
> the 'values' column data. What I can not figure out is how to either select or
> format the data for the series of individual boxplots.
> Somehow it seems I need to use reshape; do I group the data within a loop?
> This does not seem efficient. The full set of data I have covers a 30 day period
> at 6-hourly time steps with 9320 rows
>
> Data
>
> lid|ens_num|basis_time|valid_time|value
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-21 00:00:00|1431.4787995285
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-21 00:00:00|740.777643846512
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-21 00:00:00|740.777778561401
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-21 00:00:00|740.777441774178
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-21 00:00:00|740.777441774178
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-21 06:00:00|1430.25545361671
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-21 06:00:00|673.404235368919
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-21 06:00:00|673.404370083809
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-21 06:00:00|673.404235368919
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-21 06:00:00|673.404235368919
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-21 12:00:00|1429.0170196373
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-21 12:00:00|602.801441559601
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-21 12:00:00|602.801239487267
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-21 12:00:00|602.801441559601
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-21 12:00:00|602.801441559601
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-21 18:00:00|1427.75029553108
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-21 18:00:00|532.976794630909
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-21 18:00:00|532.976727273464
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-21 18:00:00|532.97639048624
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-21 18:00:00|532.976895667076
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-22 00:00:00|1426.44531239624
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-22 00:00:00|467.520648461056
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-22 00:00:00|467.520513746166
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-22 00:00:00|467.520379031277
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-22 00:00:00|467.520783175945
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-22 06:00:00|1425.14127226563
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-22 06:00:00|408.103669752502
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-22 06:00:00|408.105117937565
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-22 06:00:00|408.102255246162
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-22 06:00:00|408.193086760426
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-22 12:00:00|1423.73767783165
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-22 12:00:00|356.017269114971
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-22 12:00:00|356.245105671883
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-22 12:00:00|355.568634854126
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-22 12:00:00|357.646308916569
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-22 18:00:00|1422.30188653908
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-22 18:00:00|310.664962696362
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-22 18:00:00|310.956081572628
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-22 18:00:00|310.891788891602
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-22 18:00:00|311.764674018288
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-23 00:00:00|1420.79065490837
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-23 00:00:00|271.319441647482
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-23 00:00:00|271.90585556159
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-23 00:00:00|272.571818617964
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-23 00:00:00|272.197900602722
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-23 06:00:00|1419.24197253838
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-23 06:00:00|238.587209240341
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-23 06:00:00|238.386618769836
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-23 06:00:00|246.312821885538
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-23 06:00:00|237.956154179716
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-23 12:00:00|1417.63953892746
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-23 12:00:00|209.872343232489
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-23 12:00:00|209.899606158257
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-23 12:00:00|215.785316521025
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-23 12:00:00|208.711723941135
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-23 18:00:00|1415.99035924988
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-23 18:00:00|184.638914114666
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-23 18:00:00|184.573223766661
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-23 18:00:00|189.508672138071
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-23 18:00:00|183.818062614059
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-24 00:00:00|1414.29375993118
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-24 00:00:00|162.991595356035
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-24 00:00:00|162.881398576403
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-24 00:00:00|166.706644703865
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-24 00:00:00|162.506082894182
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-24 06:00:00|1411.73094387283
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-24 06:00:00|144.685525805521
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-24 06:00:00|144.518832969093
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-24 06:00:00|147.765293413067
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-24 06:00:00|144.311169966888
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-24 12:00:00|1409.87780585251
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-24 12:00:00|128.826771134949
> MDBV1|ens02|2016-04-20 18:00:00|2016-04-24 12:00:00|128.591449481988
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-24 12:00:00|131.575131694579
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-24 12:00:00|128.445443800783
> MDBV1|ens01|2016-04-19 06:00:00|2016-04-24 18:00:00|1407.97159016571
> MDBV1|ens01|2016-04-20 18:00:00|2016-04-24 18:00:00|115.098490343833
> MDBV1|ens03|2016-04-20 18:00:00|2016-04-24 18:00:00|117.685470885491
> MDBV1|ens04|2016-04-20 18:00:00|2016-04-24 18:00:00|114.647296500087
>
>
> Thank you,
> Tom
>
>       [[alternative HTML version deleted]]
>
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