FSK2R: an interface between FSK-ML and R
The FSK2R package
The FSK2R package provides an interface between the R programming language and the FSK-ML standard. It enables to import already existing models compliant with the FSK-ML standard into R. It also includes functions for the creation of a model with the FSK-ML format based on an already existing R model (an R script). The models can be queried and editted in R. This includes running the simulations included in the model, as well as defining new ones. Finally, the models can be exported as an .fskx file, compliant with the FSK-ML standard.
This document first makes a brief description of the FSK-ML standard. Then, it describes the main features of the FSK2R package using several examples. These are:
- Import of existing FSK-ML compliant models into R.
- Creating of FSK-ML compliant files based on already existing R models.
- Running the simulations included in an FSK file, as well as editting the existing ones and adding new ones.
- Exporting the FSK model (potentially created or editted in R) as a file compliant with FSK-ML.
- Checking the compliance of an FSK file with the FSK-ML standard.
The package can easily be installed from CRAN with the following line of code:
Once installed, it can be loaded with:
The FSK-ML (Food Safety Markup Language) standard
Food safety risk assessments, control of food production processes as well as the development of new food products are nowadays supported by application of mathematical modelling and data analysis techniques. This creates an increasing demand for resources facilitating the efficient, transparent and quality proven exchange of relevant information, e.g. analytical data, mathematical models, simulation setting as well as simulated data. For example, new parameterized microbial models are frequently made publicly available only in written mode via scientific publications. However, in order to apply these models to a given practical decision support question (e.g. on the growth/no-growth of a microorganism in a specific food matrix under given processing conditions) the interested end-user would have to re-implement the model based on information provided in a publication. Here it would be more efficient if those who create parameterized models could provide their model additionally as a file complying with a standardized file format that is also capable of transferring all relevant meta data. Such a file could e.g. be provided as a supplement to the publication and could be read-in by the end user’s software tools (thus overcoming an error-prone re-implementation process).
A first standardized file format has been proposed in the “Predictive Modelling in Food Markup Language (PMF-ML) Software Developer Guide”. This document describes in detail how experimental data and mathematical models from the domain of predictive microbial modelling (and beyond) can be saved and encoded in a software independent manner. With the Food Safety Knowledge Markup Language (FSK-ML) we now extend the PMF-ML format to enable the exchange of knowledge / information that is embedded in specific script-based programming languages (e.g. “R”, Matlab, Python). I.e. the FSK-ML guidance document primarily aims at harmonizing the exchange of food safety knowledge (e.g. predictive models) including the associated meta data where this knowledge is only available in a software dependent format. The FSK-ML format therefore relaxes and adapts certain specifications of the PMF-ML format while at the same time maintaining the highest possible synergies between both formats. This will also help to make sure that food safety models encoded in a software independent manner (using PMF-ML) can easily be interpreted by FSK-ML import and export software functions in the future.
Importing an FSK file
The FSK2R packages includes the function import_fsk() for importing a model file compatible with the FSK-ML standard into R. This function has two arguments:
file_path: the path to the FSK file.check: whether some automatic checks are made (FALSEby default).
The FSK2R package includes an example FSK file to use as teaching material. Additional files can be downloaded, for instance, in the RAKIP model repository (https://foodrisklabs.bfr.bund.de/rakip-model-repository-web-services/). The location of the example file can be retrieved with the following code.
## [1] "/tmp/RtmpvSrSkQ/Rinst131d13cd7fcc/FSK2R/extdata/ToyModelv4.fskx"In this vignette, we will use that example file to demonstrate the
features included in FSK2R. To import the file into R,
we just have to call import_fsk() with the path to the file
as only argument.
The function creates a list of class FSK2R.
## [1] "FSK2R" "list"The package includes a function to test whether an object is an
instance of FSK2R:
## [1] TRUEThe list of class FSK2R has several entries, each one
corresponding to one file in the original FSK file.
## [1] "manifest" "metadata" "model_metadata" "model"
## [5] "packages" "readme" "simulation" "R_model"
## [9] "visualization" "other_files"The entry manifest is a data.frame which
lists the location of all the files within the FSK file:
## # A tibble: 15 × 4
## format location filename filetype
## <chr> <chr> <chr> <chr>
## 1 http://identifiers.org/combine.specifications/omex "." "." ""
## 2 https://www.iana.org/assignments/media-types/text… "./Dose… "Dose_m… "csv"
## 3 http://purl.org/NET/mediatypes/application/zip "./grid… "gridEx… "zip"
## 4 https://www.iana.org/assignments/media-types/appl… "./pack… "packag… "json"
## 5 http://purl.org/NET/mediatypes/text-xplain "./READ… "README… "txt"
## 6 http://purl.org/NET/mediatypes/application/r "./simu… "defaul… "R"
## 7 http://identifiers.org/combine.specifications/ome… ".\\met… ".\\met… "rdf"
## 8 http://identifiers.org/combine.specifications/ome… "./mani… "manife… "xml"
## 9 http://purl.org/NET/mediatypes/application/sbml+x… "./mode… "model.… "sbml"
## 10 http://purl.org/NET/mediatypes/application/zip "./ggpl… "ggplot… "zip"
## 11 http://purl.org/NET/mediatypes/application/r "./visu… "visual… "r"
## 12 http://identifiers.org/combine.specifications/sed… "./sim.… "sim.se… "sedml"
## 13 http://purl.org/NET/mediatypes/application/r "./work… "worksp… "r"
## 14 http://purl.org/NET/mediatypes/application/r "./mode… "model.… "r"
## 15 https://www.iana.org/assignments/media-types/appl… "./meta… "metaDa… "json"The entry metadata is a nested list including all the
meta-information of the model. For further information about this item,
go to the section Visualizing and editting the metadata of an FSK2R
object of this manual.
The entry model_metadata includes the information that
was defined in the metadata.rdf file of the FSK container. It
is saved as a nested list.
The entry model includes all the information originally
included in the model.sbml file. This includes (among others)
the model parameters. It is a nested list:
## $sbml
## $sbml$model
## $sbml$model$listOfParameters
## $sbml$model$listOfParameters$parameter
## $sbml$model$listOfParameters$parameter$annotation
## $sbml$model$listOfParameters$parameter$annotation$parameter
## list()
## attr(,"value")
## [1] "as.matrix(read.table(file =\"Dose_matrix.csv\",sep=\",\", header = TRUE, row.names=1))"
##
##
## attr(,"name")
## [1] "Dose_matrix"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "Dose_matrix"
##
## $sbml$model$listOfParameters$parameter
## list()
## attr(,"name")
## [1] "nInf"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "nInf"
##
## $sbml$model$listOfParameters$parameter
## list()
## attr(,"name")
## [1] "nIll"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "nIll"
##
## $sbml$model$listOfParameters$parameter
## list()
## attr(,"name")
## [1] "meanPos"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "meanPos"
##
## $sbml$model$listOfParameters$parameter
## list()
## attr(,"name")
## [1] "prev18"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "prev18"
##
## $sbml$model$listOfParameters$parameter
## list()
## attr(,"name")
## [1] "prev100"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "prev100"
##
## $sbml$model$listOfParameters$parameter
## list()
## attr(,"name")
## [1] "prev1000"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "prev1000"
##
## $sbml$model$listOfParameters$parameter
## $sbml$model$listOfParameters$parameter$annotation
## $sbml$model$listOfParameters$parameter$annotation$parameter
## list()
## attr(,"value")
## [1] "0.04"
##
##
## attr(,"name")
## [1] "alpha"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "alpha"
##
## $sbml$model$listOfParameters$parameter
## $sbml$model$listOfParameters$parameter$annotation
## $sbml$model$listOfParameters$parameter$annotation$parameter
## list()
## attr(,"value")
## [1] "0.055"
##
##
## attr(,"name")
## [1] "beta"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "beta"
##
## $sbml$model$listOfParameters$parameter
## $sbml$model$listOfParameters$parameter$annotation
## $sbml$model$listOfParameters$parameter$annotation$parameter
## list()
## attr(,"value")
## [1] "0.00255"
##
##
## attr(,"name")
## [1] "eta"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "eta"
##
## $sbml$model$listOfParameters$parameter
## $sbml$model$listOfParameters$parameter$annotation
## $sbml$model$listOfParameters$parameter$annotation$parameter
## list()
## attr(,"value")
## [1] "0.086"
##
##
## attr(,"name")
## [1] "r"
## attr(,"constant")
## [1] "false"
## attr(,"id")
## [1] "r"
##
##
## attr(,"id")
## [1] "model"
##
## attr(,"level")
## [1] "3"
## attr(,"version")
## [1] "1"
## attr(,"xmlns")
## [1] "http://www.sbml.org/sbml/level3/version1/core"
## attr(,"xmlns:fsk")
## [1] "https://foodrisklabs.bfr.bund.de/wp-content/uploads/2017/01/FSK-ML_guidance_document_021216.pdf"The entry packages is a list with all the R
packages required by the model.
## $Language
## [1] "R 3"
##
## $PackageList
## $PackageList[[1]]
## $PackageList[[1]]$Package
## [1] "ggplot2"
##
## $PackageList[[1]]$Version
## [1] "3.1.0"
##
##
## $PackageList[[2]]
## $PackageList[[2]]$Package
## [1] "gridExtra"
##
## $PackageList[[2]]$Version
## [1] "2.3"
##
##
## $PackageList[[3]]
## $PackageList[[3]]$Package
## [1] "ggplot2"
##
## $PackageList[[3]]$Version
## [1] "3.1.0"
##
##
## $PackageList[[4]]
## $PackageList[[4]]$Package
## [1] "gridExtra"
##
## $PackageList[[4]]$Version
## [1] "2.3"The entry readme includes the text defined in the README
file:
## [1] "## FSK-Lab\nThis model is made available in the FSK-ML format, i.e. as .fskx file. To execute the model or to perform model-based predictions it is recommended to use the software FSK-Lab. FSK-Lab is an open-source extension of the open-source data analytics platform KNIME. To install FSK-Lab follow the installation instructions available at: https://foodrisklabs.bfr.bund.de/fsk-lab_de/. Once FSK-Lab is installed a new KNIME workflow should be created and the \"FSKX Reader\" node should be dragged into it. This \"FSKX Reader\" node can be configured to read in the given \".fskx\" file. To perform a model-based prediction connect the out-port of the \"FSKX Reader\" node with the \"FSK Simulation Configurator JS\" node to adjust if necessary input parameters and store this into a user defined simulation setting, After that connect the output port with the input of a FSK Runner node that perform the simulation and look at the results at the node's outport.\n## FSK-Lab"The entry simulation is a nested list with the data
defning the simulations. For more details on this item, go to section
Running and editting simulations in the FSK file.
The entry R_model includes the code of the R model.
## #########################################################################################
## # Code
## # Quantitative risk assessment of norovirus transmission in food establishments:
## # evaluating the impact of intervention strategies and food employee behavior on
## # the risk associated with norovirus in foods
## # Risk Analysis
## # January 2017
## #########################################################################################
##
## library(ggplot2)
## library(gridExtra)
##
##
## #Generation our Dose_matrix.csv file
## #save.image("I:/Norovirus at Retail Risk Assessment model/Original_nLoop1/workspace_Original_NoV_QRA.RData")
## #load("I:/Norovirus at Retail Risk Assessment model/Original_nLoop1/workspace_Original_NoV_QRA.RData")
## #dim(Dose_matrix)
## #write.csv(Dose_matrix, file = "Dose_matrix.csv")
##
## print("---> Starting simulation defined in the FSK-ML file...")
##
## ##################################
## ###### Does respone function #####
## ##################################
##
## DoseResponse <- function(Dose, model="Teunis"){
## # See Teunis et al, 2008 model
## Dose <- as.vector(Dose)
##
##
## RiskInf <- 1-exp(lgamma(alpha+beta) + lgamma(beta+Dose)- lgamma(beta)- lgamma(alpha+beta+Dose))
## PIllGivenInf <- 1 - (1 + Dose * eta)^(-r)
## RiskIll <- RiskInf * PIllGivenInf
## return(c(sum(RiskInf),sum(RiskIll)))
## }
##
##
## resFin <- NULL
##
## for(Scenario in 4){
##
## #cat(Scenario,"\n")
## #whereChains <- paste(PathToResults,Scenario,sep="")
## #files <- list.files(whereChains)
##
## #length(files)
##
## res <- matrix(NA,nc=8,nrow=1000)
## for(i in 1:1000){# cat(i)
## #if((i %% 100) == 0) cat("*")
## #load(paste(whereChains,files[i],sep="/"))
## nCases <- apply(Dose_matrix,2,DoseResponse)
## res[i,] <- c(mean=mean(Dose_matrix),prev=mean(Dose_matrix>0),meanPos=mean(Dose_matrix[Dose_matrix>0]),
## prev18 = mean(Dose_matrix>18), prev100=mean(Dose_matrix>100),prev1000=mean(Dose_matrix>1000),
## nInf=mean(nCases[1,]), nIll=mean(nCases[2,]))
##
## }
## # cat("\n")
## resFin <- rbind(resFin,c(apply(res,2,mean,na.rm=TRUE)))
## # print()
## #,
## #as.vector(apply(res[,7:8],2,quantile,probs=c(.025,.5,.95,.975),na.rm=TRUE)))))
## }
##
##
##
## colnames(resFin) <- c("Dose_matrix","prev","meanPos","prev18","prev100","prev1000","nInf","nIll")
## #,
## #"q025nInf","q050nInf","q950nInf","q975nInf",
## #"q025nIll","q050nIll","q950nIll","q975nIll")
##
## resFin
## res_df<-t(round(as.data.frame(resFin),2))Finally, visualization contains the code of the
visualization script:
## qplot(1:10, 1:10, geom = "blank") + theme_bw() + theme(line = element_blank(), text = element_blank()) +
## # Then I add my table :
## annotation_custom(grob = tableGrob(res_df))
## Creating an FSK model based on an existing R file
The functions in the FSK2R package can be used to
create a model compliant with the FSK-ML standard based on an already
existing R script. This can be accomplished using the
create_fsk() function. It has five arguments:
r_model: the path to the R script where the model is defined.r_visualization: the path to the visualization script (optional).readme: A character describing the contents of the README file (optional).other_files: the path to other files that may be required by the model (optional).pckg_frame: adata.framedescribing the dependencies. It must have two columns:Package(the package name) andVersionthe package version (optional).
The FSK2R includes an example model file and an example visualization file that can be used for learning purposes. The path of the model file can be found with:
## [1] "/tmp/RtmpvSrSkQ/Rinst131d13cd7fcc/FSK2R/extdata/model.r"And the one of the visualization file:
visualization_path <- system.file("extdata", "visualization.r", package = "FSK2R")
print(visualization_path)## [1] "/tmp/RtmpvSrSkQ/Rinst131d13cd7fcc/FSK2R/extdata/visualization.r"We can create a new FSK object by passing both paths to the
create_fsk() function. The remaining arguments will be left
to their default values and the information will be filled in later.
The variable FSK_from_R now contains an instance of
class FSK2R.
## [1] "FSK2R" "list"It has the common structure of this object, compatible with the FSK-ML format.
## [1] "manifest" "metadata" "model_metadata" "model"
## [5] "packages" "readme" "simulation" "R_model"
## [9] "visualization"The function generates the typical model_metadata
## $Description
## $Description$conformsTo
## [1] "2.0"
##
## $Description$.attrs
## about
## "."
## attr(,"namespaces")
## http://www.w3.org/1999/02/22-rdf-syntax-ns#
## "rdf"
##
##
## $Description
## $Description$type
## [1] "visualizationScript"
##
## $Description$.attrs
## about
## "/visualization.r"
## attr(,"namespaces")
## http://www.w3.org/1999/02/22-rdf-syntax-ns#
## "rdf"
##
##
## $Description
## $Description$type
## [1] "workspace"
##
## $Description$.attrs
## about
## "/workspace.r"
## attr(,"namespaces")
## http://www.w3.org/1999/02/22-rdf-syntax-ns#
## "rdf"
##
##
## $Description
## $Description$type
## [1] "modelScript"
##
## $Description$.attrs
## about
## "/model.r"
## attr(,"namespaces")
## http://www.w3.org/1999/02/22-rdf-syntax-ns#
## "rdf"
##
##
## $Description
## $Description$type
## [1] "readme"
##
## $Description$.attrs
## about
## "/README.txt"
## attr(,"namespaces")
## http://www.w3.org/1999/02/22-rdf-syntax-ns#
## "rdf"Running and editting simulations in the FSK file
The FSK2R package is able to run the simulations defined in an FSK-ML model, as long as they are written in the R programming language. The model
## [1] TRUEThe number of models included in FSK_from_R can be
checked with the n_simuls_fsk() function included in
FSK2R:
## [1] 1In this case, the FSK model includes a single simulation. It can be
run with the function run_simulation(). This function takes
three arguments:
fsk_object: an instance of FSK2R.index: an identifier for the simulation.run_visualization: whether to run the visualizatino script (FALSE by default).
Because my_fsk only has one simulation, we will set
index = 1. When the function is called without specifying
that the visualization script shall be run, the simulation is run
silently (besides any print or cat defined in
model.R):
In order to run the simulation, run_visualization must
be set to TRUE.
The FSK2R package can be used to define new
simulations for the model using the function
set_new_simulation(). It has three arguments:
fsk_object: an instance of FSK2R.simulation_id: an identificator for the new simulation.parameters: a list describing what parameters to change.
Because of the scoping rules of R, the function does not change the
fsk_object in place. Instead, it returns a copy of the
FSK2R list with the additional information about the simulations
added.
new_model <- set_new_simulation(my_fsk, "new",
list(r = 0.09,
Dose_matrix = "as.matrix(read.table(file =\"Dose_matrix.csv\",sep=\",\", header = TRUE, row.names=1))",
alpha = 0.05,
beta = 0.045,
eta = 0.003
)
)We can now check that new_model has one new simulation
than the original model:
## [1] 2The new simulation can be run using the run_simulation
function as shown above. The package also has the function
run_all_simulations to run every simulation included in the
model.
Setters and getters
The FSK2R package includes several functions to query and edit the contents of a FSK-ML compliant model. This section describes them, except for those used for the metadata, which as presented in the following section.
The object FSK_from_R that we defined before did not
have a readme. It can be defined with the function
set_readme() included in FSK2R. This
function takes two arguments:
fsk_objectan instance of FSK2R.readme_textA character string with the README text.
Note that this function does not directly update
fsk_object. Instead, it returns a copy with the updated
information.
readme_text <- "This is an FSK-ML compliant model generated based on an existing R script"
FSK_from_R <- set_readme(FSK_from_R, readme_text)Then, the FSK2R package includes several functions
to query the contents of an instance of FSK2R. For
instance, we can retrieve the README content we just defined with
get_readme():
## [1] "This is an FSK-ML compliant model generated based on an existing R script"Furthermore, the data used for the simulations can also be retrieved
with get_simulations():
Visualizing and editting the metadata of an FSK2R object
The FSK2R package implements several getters
specific for summarizing the metadata of an FSK2R object.
All of them take an object of class FSK2R as argument and
return a nested list with the relevant information.
The function get_general_info() summarizes the general
metainformation of the model:
## $name
## [1] "Toy Model for Testing Purposes"
##
## $source
## [1] "UNPUBLISHED STUDIES (EXPERIMENTS-OBSERVATIONS): Studies and surveys"
##
## $identifier
## [1] "Toy_Model_Generic_03"
##
## $creationDate
## [1] "2018-04-19T22:00:00"
##
## $rights
## [1] "Creative Commons Attribution-NonCommercial 4.0"
##
## $language
## [1] "English"
##
## $software
## [1] "R"
##
## $creators
## # A tibble: 2 × 11
## eClass title familyName givenName email telephone streetAddress country city
## <chr> <chr> <chr> <chr> <chr> <chr> <chr> <chr> <chr>
## 1 http:/… Dr. Romanov Natalia blac… 030 12345 Nahmitzer Da… Russia… Berl…
## 2 http:/… Mr. Parker Peter pete… 03301 13… Am Kleinen W… United… Pots…
## # ℹ 2 more variables: region <chr>, organization <chr>
##
## $reference
## # A tibble: 3 × 11
## eClass isReferenceDescription publicationType publicationDate doi authorList
## <chr> <chr> <chr> <chr> <chr> <chr>
## 1 http:… TRUE Pamphlet 2019-03-05T13:… 10.5… Jack Baue…
## 2 http:… TRUE <NA> 2019-03-05T13:… 10.1… James Bon…
## 3 http:… TRUE Dictionary 2019-03-05T13:… 10.1… Jack Ryan…
## # ℹ 5 more variables: publicationTitle <chr>, publicationAbstract <chr>,
## # publicationStatus <chr>, publicationWebsite <chr>, comment <chr>The function get_scope() returns the scope of the
model:
## $product
## # A tibble: 3 × 12
## eClass productName productDescription productUnit productionMethod packaging
## <chr> <chr> <chr> <chr> <chr> <chr>
## 1 http://… Lettuce fresh german lett… g Organic product… Packed
## 2 http://… Tomatoes not so fresh g Genetically mod… Cardboar…
## 3 http://… Meat, prep… pretty much any p… g Farmed Domestic… Vacuum p…
## # ℹ 6 more variables: productTreatment <chr>, originCountry <chr>,
## # originArea <chr>, fisheriesArea <chr>, productionDate <chr>,
## # expiryDate <chr>
##
## $hazard
## # A tibble: 3 × 14
## eClass hazardType hazardName hazardDescription hazardUnit adverseEffect
## <chr> <chr> <chr> <chr> <chr> <chr>
## 1 http://BfR/b… Organic c… norovirus… novovirus is des… CFU morbitity
## 2 http://BfR/b… Microorga… Salmonell… we dont know how… Fill mortality
## 3 http://BfR/b… Food addi… Monoammon… tastes great but… fg/mL obesity
## # ℹ 8 more variables: sourceOfContamination <chr>, maximumResidueLimit <chr>,
## # noObservedAdverseAffectLevel <chr>, lowestObservedAdverseAffectLevel <chr>,
## # acceptableOperatorExposureLevel <chr>, acuteReferenceDose <chr>,
## # acceptableDailyIntake <chr>, benchmarkDose <chr>The function get_background() returns the background
information of the model:
## $studyTitle
## [1] "Assessment of integrity of metadata in FKS Lab and associated services"
##
## $studyDescription
## [1] "This Study will show, wether the FSK Lab will correctly read and run a generic and fully annotated model"The function get_modelmath() returns the metainformation
of the model parameters:
## $parameter
## # A tibble: 11 × 16
## eClass parameterID parameterClassificat…¹ parameterName parameterDescription
## <chr> <chr> <chr> <chr> <chr>
## 1 http:/… Dose_matrix Input Dose_matrix matrix with GEC NoV…
## 2 http:/… nInf Output nInf number of infected …
## 3 http:/… nIll Output nIll number of ill indiv…
## 4 http:/… meanPos Output meanPos mean number of NoV …
## 5 http:/… prev18 Output prev18 proportion of servi…
## 6 http:/… prev100 Output prev100 proportion of servi…
## 7 http:/… prev1000 Output prev1000 proportion of servi…
## 8 http:/… alpha Input alpha Alpha parameter in …
## 9 http:/… beta Input beta Beta parameter in d…
## 10 http:/… eta Input eta Eta parameter in do…
## 11 http:/… r Input r R parameter in dose…
## # ℹ abbreviated name: ¹parameterClassification
## # ℹ 11 more variables: parameterUnit <chr>, parameterUnitCategory <chr>,
## # parameterDataType <chr>, parameterSource <chr>, parameterSubject <chr>,
## # parameterDistribution <chr>, parameterValue <chr>,
## # parameterVariabilitySubject <chr>, parameterValueMin <chr>,
## # parameterValueMax <chr>, parameterError <chr>The package also includes functions for updating the metadata based on the template available online: https://docs.google.com/spreadsheets/d/12ujuQn49Gp2F-zMbCAgsu9wYfLjooeR2c2Ec1zkLkl0/edit#gid=766274181.
The FSK2R package includes functions to update the
metainformation in an instance of FSK2R with the data
defined in a Metadata Template (in Excel) using the function
read_fsk_metadata_excel() for those created in Excel and
saved locally. It takes 3 arguemnts:
fsk_object: The instance ofFSK2Rto update.path(onlyread_fsk_metadata_excel()): Path where the Metadata Template is saved.type_of_model: Type of model.
For training purposes, the FSK2R package includes an example Metadata Template in excel format. The path where it is saved can be accessed with the following command.
template_path <- system.file("extdata", "example_template.xlsx", package = "FSK2R")
print(template_path)## [1] "/tmp/RtmpvSrSkQ/Rinst131d13cd7fcc/FSK2R/extdata/example_template.xlsx"We will use the data in the template to populate the metadata of the FSK-ML compliant file that we generated from an R script.
## New names:
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## Joining with `by = join_by(my_name)`
## • `` -> `...2`
## • `` -> `...3`Exporting the FSK file
Finally, the package includes the function export_fsk()
for exporting the instance of FSK2R as a file compliant
with the FSK-ML format. This function takes two arguments:
fsk_object: the instance ofFSK2Rto export.out_path: the path where to save the file.check: whether some checks on the file are performed (TRUE by default).
As a demonstration, we will export the object my_fsk as
an FSK-ML compliant file called out.fskx.
## Warning in file.copy(fsk_object$other_files, out_path): problem copying
## /tmp/RtmpLygKyO/./gridExtra_2.3.zip to
## /tmp/RtmpLygKyO//FSK_1051/gridExtra_2.3.zip: No such file or directory## Warning in file.copy(fsk_object$other_files, out_path): problem copying
## /tmp/RtmpLygKyO/.\metadata.rdf to /tmp/RtmpLygKyO//FSK_1051/.\metadata.rdf: No
## such file or directory## Warning in file.copy(fsk_object$other_files, out_path): problem copying
## /tmp/RtmpLygKyO/./ggplot2_3.1.0.zip to
## /tmp/RtmpLygKyO//FSK_1051/ggplot2_3.1.0.zip: No such file or directoryThis file can be imported back into R using the
import_fsk() function, as usual.