Divide an exdf object into groups
split.exdf.RdDivides an exdf object into groups defined by one or more factors.
Usage
# S3 method for class 'exdf'
split(x, f, drop = FALSE, lex.order = FALSE, ...)Arguments
- x
An
exdfobject.- f
A factor or a list of factors.
- drop
A logical value indicating whether levels of
fthat do not occur should be dropped.- lex.order
A logical value passed to
interaction.- ...
Additional arguments to be passed to the default method of
split.
Examples
# Read a Licor file, select just a few columns, and then split it by the value
# of the `plot` column
licor_file <- read_gasex_file(
PhotoGEA_example_file_path('ball_berry_1.xlsx')
)
licor_file <- licor_file[, c('plot', 'species', 'Qin', 'A', 'gsw'), TRUE]
split(
licor_file,
list(licor_file[,'species'], licor_file[,'plot']),
drop = TRUE
)
#> $soybean.1a
#> plot [UserDefCon] (NA) species [UserDefCon] (NA)
#> 1 1a soybean
#> 2 1a soybean
#> 3 1a soybean
#> 4 1a soybean
#> 5 1a soybean
#> 6 1a soybean
#> 7 1a soybean
#> Qin [LeafQ] (micromol m^(-2) s^(-1)) A [GasEx] (micromol m^(-2) s^(-1))
#> 1 2000.030 35.400473
#> 2 1099.800 22.996635
#> 3 799.983 25.430106
#> 4 649.951 23.290614
#> 5 500.135 16.617929
#> 6 350.106 12.240074
#> 7 200.141 5.679174
#> gsw [GasEx] (mol m^(-2) s^(-1))
#> 1 0.3881885
#> 2 0.3044869
#> 3 0.2804279
#> 4 0.2181023
#> 5 0.2123801
#> 6 0.1848656
#> 7 0.1685880
#>
#> $soybean.1b
#> plot [UserDefCon] (NA) species [UserDefCon] (NA)
#> 15 1b soybean
#> 16 1b soybean
#> 17 1b soybean
#> 18 1b soybean
#> 19 1b soybean
#> 20 1b soybean
#> 21 1b soybean
#> Qin [LeafQ] (micromol m^(-2) s^(-1)) A [GasEx] (micromol m^(-2) s^(-1))
#> 15 1999.850 47.950460
#> 16 1099.890 30.250627
#> 17 799.873 25.472460
#> 18 650.070 26.383035
#> 19 499.982 17.009070
#> 20 350.060 14.666531
#> 21 200.070 9.276031
#> gsw [GasEx] (mol m^(-2) s^(-1))
#> 15 0.6974767
#> 16 0.5627892
#> 17 0.4941281
#> 18 0.4676789
#> 19 0.4235752
#> 20 0.1587479
#> 21 0.2030845
#>
#> $tobacco.2
#> plot [UserDefCon] (NA) species [UserDefCon] (NA)
#> 22 2 tobacco
#> 23 2 tobacco
#> 24 2 tobacco
#> 25 2 tobacco
#> 26 2 tobacco
#> 27 2 tobacco
#> 28 2 tobacco
#> Qin [LeafQ] (micromol m^(-2) s^(-1)) A [GasEx] (micromol m^(-2) s^(-1))
#> 22 2000.020 29.61454
#> 23 1099.980 25.49228
#> 24 800.046 22.21817
#> 25 650.001 16.34589
#> 26 500.036 12.10635
#> 27 350.073 12.04469
#> 28 200.236 7.84987
#> gsw [GasEx] (mol m^(-2) s^(-1))
#> 22 0.29002835
#> 23 0.26095999
#> 24 0.24715976
#> 25 0.22395230
#> 26 0.22348130
#> 27 0.20608729
#> 28 0.08301745
#>
#> $soybean.5
#> plot [UserDefCon] (NA) species [UserDefCon] (NA)
#> 8 5 soybean
#> 9 5 soybean
#> 10 5 soybean
#> 11 5 soybean
#> 12 5 soybean
#> 13 5 soybean
#> 14 5 soybean
#> Qin [LeafQ] (micromol m^(-2) s^(-1)) A [GasEx] (micromol m^(-2) s^(-1))
#> 8 1999.980 45.78075
#> 9 1099.960 36.21825
#> 10 799.910 32.76940
#> 11 650.108 22.92448
#> 12 499.921 22.06819
#> 13 349.991 17.09159
#> 14 200.029 10.76825
#> gsw [GasEx] (mol m^(-2) s^(-1))
#> 8 0.8771680
#> 9 0.6695119
#> 10 0.5599051
#> 11 0.5758128
#> 12 0.3805223
#> 13 0.3462828
#> 14 0.3181253
#>