A metadata column on a DataFrame runs along its 2nd dimension so is not
a good place to put the list names.
Have you tried unlist()?
library(S4Vectors)
DF <- DataFrame(id=letters[1:10], score=runif(10))
f <- sample(LETTERS[1:3], 10, replace=TRUE)
DFL <- split(DF, f)
DFL
# SplitDataFrameList of length 3
# $A
# DataFrame with 2 rows and 2 columns
# id score
# <character> <numeric>
# 1 f 0.894709
# 2 h 0.801125
#
# $B
# DataFrame with 1 row and 2 columns
# id score
# <character> <numeric>
# 1 d 0.538166
#
# $C
# DataFrame with 7 rows and 2 columns
# id score
# <character> <numeric>
# 1 a 0.0145477
# 2 b 0.2507581
# 3 c 0.4388678
# 4 e 0.5219524
# 5 g 0.6377634
# 6 i 0.1892103
# 7 j 0.1829650
unlist(DFL)
# DataFrame with 10 rows and 2 columns
# id score
# <character> <numeric>
# A f 0.8947085
# A h 0.8011255
# B d 0.5381664
# C a 0.0145477
# C b 0.2507581
# C c 0.4388678
# C e 0.5219524
# C g 0.6377634
# C i 0.1892103
# C j 0.1829650
BTW this is a user question so is more appropriate for the support site.
H.
On 16/12/2021 22:00, Dario Strbenac via Bioc-devel wrote:
Good day,
Is there a function in the S4Vectors API which converts a
DataFrameList into a DataFrame, automatically putting the list names
into one of the metadata columns, analogous to MultiAssayExperiment's
wideFormat function? The scenario is mutliple data sets from different
organisations measuring the largely the same set of features and
patient outcome, but on completely different sets of patients in each
organisation.
--------------------------------------
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia
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--
Hervé Pagès
Bioconductor Core Team
hpages.on.git...@gmail.com
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