If you use this software, please cite our work:
citation("kronos")##
## To cite kronos in publications use:
##
## Bastiaanssen TFS, Leigh SJ, Tofani GSS, Gheorghe CE, Clarke G, Cryan
## JF (2023) Kronos: A computational tool to facilitate biological
## rhythmicity analysis. bioRxiv. doi:
## https://doi.org/10.1101/2023.04.21.537503
##
## A BibTeX entry for LaTeX users is
##
## @Article{,
## title = {Kronos: A computational tool to facilitate biological rhythmicity analysis},
## author = {Thomaz F S Bastiaanssen and Sarah-Jane Leigh and Gabriel S S Tofani and Cassandra E Gheorghe and Gerard Clarke and John F Cryan},
## journal = {bioRxiv},
## year = {2023},
## }The following document is adapted from the supplementary materials for this manuscript.
Here, we will demonstrate how to use the Kronos package to assess circadian rhythms in biological data collected over the day. For this demonstration we have adapted some data from our laboratory, currently undergoing peer review (reference to come).
We will demonstrate three common examples of experimental design currently encountered in circadian rhythms analysis:
Circadian rhythm analysis of a single variable over a 24-hour period
Circadian rhythm analysis of a single variable over a 24-hour period with two or more treatment groups
Circadian rhythm analysis of omics (higher-dimensional) data over a 24-hour period with two or more treatment groups
All R code used to transform, reorganise and plot the data is also shown below to provide a toolkit for aspiring and veteran bioinformaticians alike. It should be noted that some variables in the demonstration data sets provided here have been manipulated to better demonstrate the functionality of this package.
At the end of this document, we have included a few excursions into more advanced subjects we find useful, but that did not necessarily fit in with the mainline analysis.
#Install kronos
library(devtools)
#install_github("thomazbastiaanssen/kronos")
#Load relevant packages
library(kronos)
library(tidyverse)
library(ggplot2)
#Load prepared data stored in Kronos library
data("kronos_demo")Data should be prepared in “long form” for use in Kronos; that is with values repeating in the “Timepoint” column, which defines when data was collected during the period, here a 24-hour cycle.
Our package includes example datasets that we will use in this tutorial that are pre-formatted. You can rearrange your data into long form using pivot_longer() or gather() from the tidyverse.
Since we’re using prepared data, we already loaded it using
data(kronos_demo). You can see how an example of how the
data is prepared below:
head(groupdata)## Animal_ID Timepoint Treatment Variable_1
## 1 6 5 A 1.2789856
## 2 7 5 A 1.0606877
## 3 8 5 A 1.0497167
## 4 9 5 A 1.0533610
## 5 10 5 A 1.4590203
## 6 12 5 A 0.8408964Here we have prepared the omics data set with a separate metadata file as is common when working with omics data sets. A metadata file can be generated using select() in tidyr, or metadata and data can be combined using inner_join if they contain an identical column (both name and contents). The omics data set used here has been central-log transformed to account for its compositional nature (see our guide https://arxiv.org/abs/2207.12475 for easy centred-log transformation).
We will start with the most simple example: analysing circadian rhythmicity in a single experimental group for one outcome variable of interest. For this we use the kronos function:
output <- kronos(formula = Variable_1 ~ time(Timepoint),
data = onevariable,
period = 24,
verbose = T,
pairwise = F)## [1] "Using the following model: Variable_1 ~ Timepoint_cos + Timepoint_sin"
## [1] "Using the following model: Variable_1 ~ (Timepoint_cos + Timepoint_sin)"Here we use the formula
Outcome Variable ~ time(Time Variable), which is the most
simple model used by the kronos function. We specify the period as 24
(this can be adjusted as appropriate for the data analysed). By
selecting verbose=T, you will be able to see the models run
by the kronos function: this becomes increasingly useful when you run
more complex models. Finally we select pairwise=F here, as
there are no groups to compare for differences in rhythms.
The kronos function returns a kronosOut object, containing several pieces of data that can be accessed using handy ‘getter’ functions, which we will describe below:
1). The getKronos_input() function fetches the data that the model is based on, as well as the calculated cosine and sine components.
head(getKronos_input(output))## Variable_1 Timepoint unique_group Timepoint_cos Timepoint_sin
## 1 -0.4239923 5 TRUE 0.258819 0.9659258
## 2 -1.0311723 5 TRUE 0.258819 0.9659258
## 3 -0.8739002 5 TRUE 0.258819 0.9659258
## 4 -0.5896825 5 TRUE 0.258819 0.9659258
## 5 -0.4174538 5 TRUE 0.258819 0.9659258
## 6 -0.4052512 5 TRUE 0.258819 0.96592582). The getKronos_fit() function fetches the key details for the generated model that may be useful for prediction, modelling and other statistical applications.
getKronos_fit(output)##
## Call:
## lm(formula = formula, data = data)
##
## Coefficients:
## (Intercept) Timepoint_cos Timepoint_sin
## -0.4063 0.3914 -0.68863). The getKronos_trace() function returns all the data required for graphing the sinusoid curve, which can either be used in our specialized ggplot2 functions, or can be used in other graphing packages. The y_hat column represents the predicted value of the outcome variable: this is essential for plotting the predicted sinusoid curve.
head(getKronos_trace(output))## Timepoint Timepoint_cos Timepoint_sin y_hat unique_group
## 1 0.00 1.0000000 0.00000000 -0.01493121 TRUE
## 2 0.25 0.9978589 0.06540313 -0.06080489 TRUE
## 3 0.50 0.9914449 0.13052619 -0.10815799 TRUE
## 4 0.75 0.9807853 0.19509032 -0.15678776 TRUE
## 5 1.00 0.9659258 0.25881905 -0.20648595 TRUE
## 6 1.25 0.9469301 0.32143947 -0.25703975 TRUE4). The getKronos_groupwise() function arguably fetches the
most useful output: this provides us with the p-value (p.val) and
proportion of the variance in the data explained (r.sq) when we fit our
sinusoid curve. Additionally we obtain the acrophase (acro) and
amplitude of the predicted curve, which can be used in our graphics
functions to visualise changes in curve with interventions (see
gg_kronos_circle, explored further below).
getKronos_groupwise(output)## unique_group p.val r.sq avg acro amplitude
## 1 TRUE 2.237134e-05 0.5345906 -0.4022588 19.97413 0.792033The package contains custom ggplot2 figure functions, that utilise the kronos output to rapidly produce figures that convey important information for circadian rhythms:
gg_kronos_circle() generates a plot showing the
acrophase and amplitude of the predicted curve, allowing the reader to
rapidly access summary data regarding variables of interest, and to
compare the summary data between groups in more complex models.At
baseline, non-significant outcome measures are presented using dashed
lines.gg_kronos_sinusoid() generates a x-y plot showing the
outcome variable across the defined period. These graphs are useful for
visualising the differences between specific timepoints assessed.gg_kronos_circle(output)
gg_kronos_sinusoid(output)
Next we will demonstrate one of the unique features of the Kronos package: the ability to compare circadian rhythms between more than two groups. This is increasingly important as the use of complex experimental designs grows in biological science. This example comprises of three independent groups and is similar in setup to a one-way ANOVA. For examples of more complex designs, see Excursion 1.
output2 <- kronos(formula = Variable_1 ~ Treatment + time(Timepoint),
data = groupdata,
period = 24,
verbose = T,
pairwise = T)## [1] "Using the following model: Variable_1 ~ Treatment + Timepoint_cos + Timepoint_sin + Treatment:Timepoint_cos + Treatment:Timepoint_sin - 1"
## [1] "Using the following model: Variable_1 ~ (Timepoint_cos + Timepoint_sin)"
## [1] "Using the following model: Variable_1 ~ (Timepoint_cos + Timepoint_sin)"
## [1] "Using the following model: Variable_1 ~ (Timepoint_cos + Timepoint_sin)"
## [1] "Fitting pairwise models"
## [1] "Using the following model: Variable_1 ~ unique_group * (Timepoint_cos + Timepoint_sin)"
## [1] "Using the following model: Variable_1 ~ unique_group * (Timepoint_cos + Timepoint_sin)"
## [1] "Using the following model: Variable_1 ~ unique_group * (Timepoint_cos + Timepoint_sin)"gg_kronos_circle(output2)
gg_kronos_sinusoid(output2)
There are a few changes to the output generated by the kronos function:
getKronos_groupwise(output2)## unique_group p.val r.sq avg acro amplitude
## 1 A 0.031490079 0.21886392 1.099699 12.681641 0.17966767
## 2 B 0.002912094 0.33147505 1.246347 18.592663 0.30283851
## 3 C 0.723230482 0.02287902 1.337834 3.447684 0.05150576In this example you can see that groups A and B exhibit statistically significant rhythms, while the model fitted to group C is non-significant.
pairwise=T. This generates pairwise comparisons between
each of the groups:getKronos_pairwise(output2)## $`A vs B`
## Analysis of Variance Table
##
## Response: Variable_1
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 0.3626 0.36262 4.3279 0.04200 *
## Timepoint_cos 1 0.1323 0.13228 1.5788 0.21406
## Timepoint_sin 1 0.8859 0.88585 10.5728 0.00193 **
## unique_group:Timepoint_cos 1 0.4090 0.40901 4.8816 0.03118 *
## unique_group:Timepoint_sin 1 0.5492 0.54916 6.5543 0.01314 *
## Residuals 57 4.7758 0.08379
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`A vs C`
## Analysis of Variance Table
##
## Response: Variable_1
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 0.9067 0.90674 14.3827 0.0003677 ***
## Timepoint_cos 1 0.1669 0.16692 2.6476 0.1093177
## Timepoint_sin 1 0.0007 0.00068 0.0108 0.9174232
## unique_group:Timepoint_cos 1 0.3425 0.34246 5.4321 0.0233965 *
## unique_group:Timepoint_sin 1 0.0390 0.03899 0.6185 0.4349195
## Residuals 56 3.5305 0.06304
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`B vs C`
## Analysis of Variance Table
##
## Response: Variable_1
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 0.1279 0.12786 1.5595 0.21685
## Timepoint_cos 1 0.0487 0.04868 0.5937 0.44417
## Timepoint_sin 1 0.5623 0.56230 6.8581 0.01129 *
## unique_group:Timepoint_cos 1 0.0025 0.00251 0.0306 0.86179
## unique_group:Timepoint_sin 1 0.8940 0.89402 10.9038 0.00166 **
## Residuals 57 4.6735 0.08199
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1Above we can see that overall group A is significantly different between B and C, and that group B exhibits a significantly different rhythm from A and C.
getKronos_pairwise_p(output2)## adj.p.val
## Treatment 0.004532107This is calculated by performing a Bonferroni correction on the interactions between both the sine and cosine time components and the independent variable. The p-value reported is the lowest following correction.
Now we will demonstrate how to adapt the kronos package for ’omics
analysis, where there are many outcome variables. We have written the
fw_kronos (feature-wise) function specifically for this
purpose. This function behaves very similar to the main kronos
function.
It requires two core types of data: First, a table of data with rows as features and columns as samples as input. Make sure that the feature labels are row names rather than a column. Second, a metadata table with rows as samples and metadata entries as columns. Suitable input data looks like this:
#plot a little of how a big omics data should be formatted
head(bigdata, n = c(5, 5))## X49 X51 X52 X24 X25
## Variable_1 0.6997887 0.7510796 0.4496661 0.7070641 0.7314069
## Variable_2 0.9185654 0.3832566 0.5772013 0.2469332 1.1264888
## Variable_3 5.7376737 5.7759893 5.8397621 4.6582202 4.6705684
## Variable_4 -0.3160217 0.2157887 5.9146992 0.1599933 0.2605589
## Variable_5 -4.8665730 -4.5445920 -3.5170020 -4.6925208 -4.3942593#plot a little of the metadata should be formatted
head(bigmeta)## Animal_ID Group Timepoint
## 1 X49 B 5
## 2 X51 B 5
## 3 X52 B 5
## 4 X24 B 5
## 5 X25 B 5
## 6 X26 B 5From the user’s perspective, fw_kronos reads very
similar to the main kronos function. The core difference is
that fw_kronos accepts data and metadata as separate
objects. Furthermore, fw_kronos doesn’t need a term on the
left-hand side of the formula. It will automatically, sequentially apply
the given formula with each feature in the input table as the response
variable.
out_list = fw_kronos(x = bigdata,
formula = ~ Group + time(Timepoint),
metadata = bigmeta,
period = 24,
verbose = F,
pairwise = T) Now we have a list of kronosOut objects, which contain all our
results. This can be cumbersome to do manually, so we wrote the
kronosListToTable function for this purpose:
fit_df = kronosListToTable(out_list)
write.csv(fit_df, "README_files/RhythmicityResults.csv")This will generate a csv containing the individual rhythmicity calculations for the whole data set with an FDR correction to account for multiple tests.
The resulting csv can be found here.
#plot a little of fit_df
head(fit_df, n = c(5, 5))## B_p.val A_p.val C_p.val B_r.sq A_r.sq
## Variable_1 9.532798e-01 0.030901063 0.7771550 0.003294345 0.21991674
## Variable_2 9.297825e-01 0.002684955 0.3122346 0.005008424 0.34483205
## Variable_3 2.784019e-07 0.755935357 0.4488660 0.646891288 0.01978728
## Variable_4 8.603783e-01 0.009861269 0.4818005 0.010317651 0.28103213
## Variable_5 7.528003e-01 0.012385930 0.9204081 0.019392619 0.26923016We can use a similar approach to obtain other components of the kronosOut objects. Below we include the code to obtain the pairwise comparisons as a single csv, as this is slightly more difficult.
#Create an empty container list of the appropriate length
pairwise_list = vector(mode = "list", length = length(out_list))
#The for-loop below generates a list containing the pairwise test results
for(m in 1:length(out_list)){
pairwise_list[[m]] <- out_list[[m]]@pairwise_models
names(pairwise_list)[m] <- names(out_list)[m]
}
#Generate a single bound list
bound_list <- lapply(X = pairwise_list, FUN = function(x){do.call(rbind, x)})
#collapse the bound list for each variable into a single dataframe
pairwise_df <- do.call(rbind, bound_list)
#separate the comparison and the effects to make results more readable
pairwise_csv = pairwise_df %>%
rownames_to_column("ID") %>%
separate(col = ID, into = c("Feature","ID"), sep = "\\.", extra = "merge") %>%
separate(col = ID, into = c("Comparison","Effect"), sep = "\\.")
write.csv(pairwise_csv, "README_files/PairwiseResults.csv") The resulting csv can be found here.
gg_kronos_acrogram() is a visualisation function we have
designed specifically for omics datasets. This function provides a polar
histogram of your dataset’s acrophases. This allows you to compare
overall rhythmicity between groups. Below we can see that a large
proportion of the variables peak between ZT20-23 in Group A, while the
variables in Groups B and C are less synchronous.
gg_kronos_acrogram(out_list)
We can also use automation to obtain individual plots for our omics data set. Here we will demonstrate how to obtain sinusoid curves for each outcome measure in the data set.
#Create an empty container list of the appropriate length
plot_list <- vector(mode = "list", length = length(out_list))
for(q in 1:length(out_list)){
#save plot into relevant position in list
plot_list[[q]] <- gg_kronos_sinusoid(out_list[[q]])
}
#to plot & save the feature graphs to a pdf:
pdf("README_files/plots_circadian.pdf")
for (i in 1:length(plot_list)) {
print(plot_list[[i]])
}
invisible(dev.off())The resulting pdf can be found here. The same approach can be applied for obtaining individual circle figures.
Here we have presented standard data for the analysis of time-of-day. Some points to consider for your data is whether you can assume a 24-hour period, and whether your data is evenly distributed over the period. Please note that you will require a minimum of three data points over your period to make use of these functions, and indeed any function using sinusoid models. Currently the kronos package is not able to estimate period; a wide range of packages are capable of determining your period if this is necessary for your research question. Please note that period estimation requires even more temporal resolution: some recommend a minimum of sampling every 2 hours over a 48-hr window (Hughes et al., 2017, doi: 10.1177/0748730417728663).
This tutorial is merely a template. Depending on your experimental set-up, findings and experimental questions you may need to adjust your approach. However, as complex statistical models become more frequent in the study of circadian rhythms, functions that can incorporate more complex design than two-group comparisons are essential for advancement of the field.
We have provided figure generation functions as clear communication of results is essential to producing good and useful science. Please see below for more details for figure customisation. We hope that both aspiring and veteran bioinformaticians and circadian rhythm biologists will find our guide helpful.
The two figure functions, gg_kronos_circle() and
gg_kronos_sinusoid(), are designed to be fully compatible
with ggplot2 and therefore are fully customisable. Below is an example
of how one could customise kronos plots using ggplot2 syntax
gg_kronos_circle(output2) +
scale_fill_manual(values = c("A" = "#169B62",
"B" = "#FFFFFF",
"C" = "#FF883E")) +
ggtitle("Figure title")
We encourage users to take advantage of the extensive range of online tutorials and add-on packages available for ggplot2.
One of the key features of this package is the use of a formula input, which allows for analysis of complex models. Below we will demonstrate how kronos performs when assessing data with two independent variables.
data3 <- twowaydata
two.way.data.long <- data3 %>%
pivot_longer(cols=starts_with("Variable_"), names_to = "Variables", values_to = "Value") %>%
as.data.frame()
#collect all outcome variables
two_way_data_names <- unique(two.way.data.long$Variables)
#Create an empty container list of the appropriate length
data.list <- vector(mode = "list", length = length(two_way_data_names))
for(n in 1:length(two_way_data_names)){
data.list[[n]] <- two.way.data.long %>% filter(Variables == two_way_data_names[n])
}
two_way_out_list = lapply(X = data.list,
FUN = function(y){kronos(data = y,
Value ~ Factor_A*Factor_B + time(Timepoint),
period = 24, pairwise = T, verbose = F)
}
)
names(two_way_out_list) <- two_way_data_names
gg_kronos_sinusoid(two_way_out_list$Variable_1)
gg_kronos_sinusoid(two_way_out_list$Variable_2)
gg_kronos_sinusoid(two_way_out_list$Variable_3)
gg_kronos_sinusoid(two_way_out_list$Variable_4)
Here we have analysed 4 outcome variables which all show different interaction effects. Here we will go into depth examining the effects observed in Variable 1 as an example of how to interpret kronos output for more complex designs.
gg_kronos_sinusoid(two_way_out_list$Variable_1)
gg_kronos_circle(two_way_out_list$Variable_1)
1). As before, we can use the getKronos_groupwise()
function to obtain individual rhythmicity for each group. Here you can
see that 3/4 groups exhibit rhythmicity and that both conventional
groups share a similar acrophase (which is illustrated in the figures
above as well).
getKronos_groupwise(two_way_out_list$Variable_1)## unique_group p.val r.sq avg acro amplitude
## 1 Antibiotics_Stress 0.003290904 0.2855699 4712.202 16.051311 548.95960
## 2 Antibiotics_Control 0.045674193 0.1575633 2340.530 3.493713 219.93545
## 3 Conventional_Stress 0.001783400 0.3267086 2329.867 18.079296 256.07917
## 4 Conventional_Control 0.075062913 0.1452404 1349.590 18.002807 91.752822). With the getKronos_pairwise_p() function we can
assess the interaction of each of our experimental factors with the time
component of the model: here you can see that both main effects and the
interaction significantly interact with the time component.
getKronos_pairwise_p(two_way_out_list$Variable_1)## adj.p.val
## Factor_A 1.000000e+00
## Factor_B 3.959353e-05
## Factor_A:Factor_B 1.911130e-023). Next we can use the getKronos_pairwise() function to
obtain the pairwise group comparisons. This allows us to determine how
each group differs from one another. For example, here you can see that
Conventional+Stress and Antibiotics+Control only exhibit a significant
group*Timepoint_sin interaction. This is unsurprising as the groups have
the same average value but exhibit a rhythm shifted by 12 hours.
getKronos_pairwise(two_way_out_list$Variable_1)## $`Antibiotics_Stress vs Antibiotics_Control`
## Analysis of Variance Table
##
## Response: Value
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 107088781 107088781 392.5199 < 2.2e-16 ***
## Timepoint_cos 1 174790 174790 0.6407 0.4261766
## Timepoint_sin 1 486557 486557 1.7834 0.1860572
## unique_group:Timepoint_cos 1 1596022 1596022 5.8500 0.0181806 *
## unique_group:Timepoint_sin 1 4198056 4198056 15.3874 0.0002021 ***
## Residuals 70 19097668 272824
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`Antibiotics_Stress vs Conventional_Stress`
## Analysis of Variance Table
##
## Response: Value
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 102318455 102318455 420.7923 < 2.2e-16 ***
## Timepoint_cos 1 741756 741756 3.0505 0.08536 .
## Timepoint_sin 1 4761304 4761304 19.5812 3.697e-05 ***
## unique_group:Timepoint_cos 1 672717 672717 2.7666 0.10099
## unique_group:Timepoint_sin 1 452020 452020 1.8590 0.17738
## Residuals 66 16048341 243157
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`Antibiotics_Stress vs Conventional_Control`
## Analysis of Variance Table
##
## Response: Value
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 210361830 210361830 969.9952 < 2.2e-16 ***
## Timepoint_cos 1 726171 726171 3.3484 0.0717181 .
## Timepoint_sin 1 2785092 2785092 12.8423 0.0006375 ***
## unique_group:Timepoint_cos 1 669456 669456 3.0869 0.0834930 .
## unique_group:Timepoint_sin 1 1403802 1403802 6.4730 0.0132640 *
## Residuals 67 14530220 216869
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`Antibiotics_Control vs Conventional_Stress`
## Analysis of Variance Table
##
## Response: Value
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 1922 1922 0.0163 0.8988585
## Timepoint_cos 1 168888 168888 1.4301 0.2358990
## Timepoint_sin 1 18570 18570 0.1572 0.6929452
## unique_group:Timepoint_cos 1 209481 209481 1.7739 0.1873534
## unique_group:Timepoint_sin 1 1847703 1847703 15.6460 0.0001847 ***
## Residuals 68 8030383 118094
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`Antibiotics_Control vs Conventional_Control`
## Analysis of Variance Table
##
## Response: Value
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 19495877 19495877 206.5666 < 2.2e-16 ***
## Timepoint_cos 1 175177 175177 1.8561 0.177510
## Timepoint_sin 1 101312 101312 1.0734 0.303786
## unique_group:Timepoint_cos 1 195432 195432 2.0707 0.154676
## unique_group:Timepoint_sin 1 729445 729445 7.7288 0.006999 **
## Residuals 69 6512262 94381
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## $`Conventional_Stress vs Conventional_Control`
## Analysis of Variance Table
##
## Response: Value
## Df Sum Sq Mean Sq F value Pr(>F)
## unique_group 1 18114110 18114110 340.0055 < 2.2e-16 ***
## Timepoint_cos 1 1535 1535 0.0288 0.86575
## Timepoint_sin 1 1116016 1116016 20.9479 2.184e-05 ***
## unique_group:Timepoint_cos 1 132 132 0.0025 0.96050
## unique_group:Timepoint_sin 1 256055 256055 4.8062 0.03194 *
## Residuals 65 3462935 53276
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1sessioninfo::session_info()## ─ Session info ───────────────────────────────────────────────────────────────
## setting value
## version R version 4.1.2 (2021-11-01)
## os Ubuntu 20.04.3 LTS
## system x86_64, linux-gnu
## ui X11
## language en_GB:en
## collate en_GB.UTF-8
## ctype en_GB.UTF-8
## tz Europe/Dublin
## date 2023-04-24
## pandoc 2.19.2 @ /usr/lib/rstudio/bin/quarto/bin/tools/ (via rmarkdown)
##
## ─ Packages ───────────────────────────────────────────────────────────────────
## package * version date (UTC) lib source
## assertthat 0.2.1 2019-03-21 [1] CRAN (R 4.1.2)
## backports 1.4.1 2021-12-13 [1] CRAN (R 4.1.2)
## brio 1.1.3 2021-11-30 [1] CRAN (R 4.1.2)
## broom 0.8.0 2022-04-13 [1] CRAN (R 4.1.2)
## cachem 1.0.6 2021-08-19 [1] CRAN (R 4.1.2)
## callr 3.7.0 2021-04-20 [1] CRAN (R 4.1.2)
## cellranger 1.1.0 2016-07-27 [1] CRAN (R 4.1.2)
## cli 3.3.0 2022-04-25 [1] CRAN (R 4.1.2)
## colorspace 2.0-3 2022-02-21 [1] CRAN (R 4.1.2)
## crayon 1.5.1 2022-03-26 [1] CRAN (R 4.1.2)
## DBI 1.1.2 2021-12-20 [1] CRAN (R 4.1.2)
## dbplyr 2.2.0 2022-06-05 [1] CRAN (R 4.1.2)
## desc 1.4.1 2022-03-06 [1] CRAN (R 4.1.2)
## devtools * 2.4.3 2021-11-30 [1] CRAN (R 4.1.2)
## digest 0.6.29 2021-12-01 [1] CRAN (R 4.1.2)
## dplyr * 1.0.9 2022-04-28 [1] CRAN (R 4.1.2)
## ellipsis 0.3.2 2021-04-29 [1] CRAN (R 4.1.2)
## evaluate 0.15 2022-02-18 [1] CRAN (R 4.1.2)
## fansi 1.0.3 2022-03-24 [1] CRAN (R 4.1.2)
## farver 2.1.1 2022-07-06 [1] CRAN (R 4.1.2)
## fastmap 1.1.0 2021-01-25 [1] CRAN (R 4.1.2)
## forcats * 0.5.1 2021-01-27 [1] CRAN (R 4.1.2)
## fs 1.5.2 2021-12-08 [1] CRAN (R 4.1.2)
## generics 0.1.2 2022-01-31 [1] CRAN (R 4.1.2)
## ggplot2 * 3.3.6 2022-05-03 [1] CRAN (R 4.1.2)
## glue 1.6.2 2022-02-24 [1] CRAN (R 4.1.2)
## gtable 0.3.0 2019-03-25 [1] CRAN (R 4.1.2)
## haven 2.5.0 2022-04-15 [1] CRAN (R 4.1.2)
## highr 0.9 2021-04-16 [1] CRAN (R 4.1.2)
## hms 1.1.1 2021-09-26 [1] CRAN (R 4.1.2)
## htmltools 0.5.2 2021-08-25 [1] CRAN (R 4.1.2)
## httr 1.4.3 2022-05-04 [1] CRAN (R 4.1.2)
## jsonlite 1.8.0 2022-02-22 [1] CRAN (R 4.1.2)
## knitr 1.39 2022-04-26 [1] CRAN (R 4.1.2)
## kronos * 0.1.0.0 2023-04-24 [1] Github (thomazbastiaanssen/kronos@2208d0a)
## labeling 0.4.2 2020-10-20 [1] CRAN (R 4.1.2)
## lifecycle 1.0.1 2021-09-24 [1] CRAN (R 4.1.2)
## lubridate 1.8.0 2021-10-07 [1] CRAN (R 4.1.2)
## magrittr 2.0.3 2022-03-30 [1] CRAN (R 4.1.2)
## memoise 2.0.1 2021-11-26 [1] CRAN (R 4.1.2)
## modelr 0.1.8 2020-05-19 [1] CRAN (R 4.1.2)
## munsell 0.5.0 2018-06-12 [1] CRAN (R 4.1.2)
## pillar 1.7.0 2022-02-01 [1] CRAN (R 4.1.2)
## pkgbuild 1.3.1 2021-12-20 [1] CRAN (R 4.1.2)
## pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 4.1.2)
## pkgload 1.2.4 2021-11-30 [1] CRAN (R 4.1.2)
## prettyunits 1.1.1 2020-01-24 [1] CRAN (R 4.1.2)
## processx 3.6.0 2022-06-10 [1] CRAN (R 4.1.2)
## ps 1.7.0 2022-04-23 [1] CRAN (R 4.1.2)
## purrr * 0.3.4 2020-04-17 [1] CRAN (R 4.1.2)
## R6 2.5.1 2021-08-19 [1] CRAN (R 4.1.2)
## readr * 2.1.2 2022-01-30 [1] CRAN (R 4.1.2)
## readxl 1.4.0 2022-03-28 [1] CRAN (R 4.1.2)
## remotes 2.4.2 2021-11-30 [1] CRAN (R 4.1.2)
## reprex 2.0.1 2021-08-05 [1] CRAN (R 4.1.2)
## rlang 1.1.0 2023-03-14 [1] CRAN (R 4.1.2)
## rmarkdown 2.14 2022-04-25 [1] CRAN (R 4.1.2)
## rprojroot 2.0.3 2022-04-02 [1] CRAN (R 4.1.2)
## rstudioapi 0.13 2020-11-12 [1] CRAN (R 4.1.2)
## rvest 1.0.2 2021-10-16 [1] CRAN (R 4.1.2)
## scales 1.2.0 2022-04-13 [1] CRAN (R 4.1.2)
## sessioninfo 1.2.2 2021-12-06 [1] CRAN (R 4.1.2)
## stringi 1.7.6 2021-11-29 [1] CRAN (R 4.1.2)
## stringr * 1.4.0 2019-02-10 [1] CRAN (R 4.1.2)
## testthat 3.1.4 2022-04-26 [1] CRAN (R 4.1.2)
## tibble * 3.1.7 2022-05-03 [1] CRAN (R 4.1.2)
## tidyr * 1.2.0 2022-02-01 [1] CRAN (R 4.1.2)
## tidyselect 1.1.2 2022-02-21 [1] CRAN (R 4.1.2)
## tidyverse * 1.3.1 2021-04-15 [1] CRAN (R 4.1.2)
## tzdb 0.3.0 2022-03-28 [1] CRAN (R 4.1.2)
## usethis * 2.1.5 2021-12-09 [1] CRAN (R 4.1.2)
## utf8 1.2.2 2021-07-24 [1] CRAN (R 4.1.2)
## vctrs 0.4.1 2022-04-13 [1] CRAN (R 4.1.2)
## withr 2.5.0 2022-03-03 [1] CRAN (R 4.1.2)
## xfun 0.31 2022-05-10 [1] CRAN (R 4.1.2)
## xml2 1.3.3 2021-11-30 [1] CRAN (R 4.1.2)
## yaml 2.3.5 2022-02-21 [1] CRAN (R 4.1.2)
##
## [1] /home/thomaz/R/x86_64-pc-linux-gnu-library/4.1
## [2] /usr/local/lib/R/site-library
## [3] /usr/lib/R/site-library
## [4] /usr/lib/R/library
##
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