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+Configuring JDemetra+ and related R tools
+================
+Tanguy BARTHELEMY
+
+## Context
+
+This document complements the \[quick installation guide\]
+(<https://github.com/TanguyBarthelemy/JD-Tutorials/blob/master/Sheets/JDemetra+_quick_installation_guide_EN.pdf>)
+by providing more details on the configuration required to run JDemetra+
+and related tools.
+
+(“C:\Users\\\\\Software”, color = windows_path_color, url = FALSE)\` or
+directly under ${\textsf{\color{#006817}{C:\\\\Users\\\\Software}}}$
+where all software will be installed.
+
+⚠️ Warning: when we specify an **absolute** path for a software
+(JDemetra+, Java, **R**, …) in a program, a shortcut, a variable, …, it
+must be modified each time any root repository is moved.
+
+## Installation of JDemetra+ Graphical user interface
+
+To install [JDemetra+ Graphical User
+Interface](https://github.com/jdemetra/jdemetra-app) see the \[quick
+installation guide\]
+(<https://github.com/TanguyBarthelemy/JD-Tutorials/blob/master/Sheets/JDemetra+_quick_installation_guide_EN.pdf>)
+
+## Installation of the cruncher
+
+To install [JDemetra+
+cruncher](https://github.com/jdemetra/jdemetra-app) see the \[quick
+installation guide\]
+(<https://github.com/TanguyBarthelemy/JD-Tutorials/blob/master/Sheets/JDemetra+_quick_installation_guide_EN.pdf>)
+
+## Installation of **R** and Rstudio
+
+The JDemetra+ algorithms can be accessed in **R** via **R** packages. To
+use **R**, it is better to use an IDE like Rstudio. All the executable
+files to download are under
+<https://posit.co/download/rstudio-desktop/#download>.
+
+### Installation of **R**
+
+To install **R**, you should:
+
+- **Download** the binary file `R-4.3.2-win.exe` under
+  <https://cran.rstudio.com/bin/windows/base/>
+- **Execute** the executable to parameter and install **R**.
+
+### Installation of Rstudio
+
+**Download** the last Rstudio version (under
+<https://posit.co/download/rstudio-desktop/#download>) and the
+**installer**.
+
+If the installation via the file `.exe` fails (because it requires
+higher rights (administrator, elevation, …), we will get a portable
+version of the Software. To do this:
+
+- **Download** and **unzip** the compressed folder `.zip` in a folder
+  named “Rstudio” (under
+  ${\textsf{\color{#006817}{C:\\\\Users\\\\Software}}}$)
+- **Create a shortcut** of the file `rstudio.exe` on the Desktop.
+
+### Installation of **R** packages
+
+To install a **R** package, there are several methods:
+
+- Either it is on CRAN and you can install it directly with the function
+  `install.packages()`
+- Or it is on Github and you can install it directly with the function
+  `install_github()` from the package **remotes**
+- Or you have to retrieve the package from a folder (binary format)
+  (`.zip`) and then install it with the function `install.packages()`
+  with the arguments `repos = NULL, type = "binary"`.
+
+#### R packages for JDemetra+ version 2.2.4
+
+The packages in version 2 are:
+
+| Name          | Available on CRAN | Available on AUS | Github link                                  |
+|---------------|-------------------|------------------|----------------------------------------------|
+| RJDemetra     | ✔️                | ✔️               | <https://github.com/jdemetra/rjdemetra>      |
+| rjdworkspace  | ❌                | ✔️               | <https://github.com/InseeFrLab/rjdworkspace> |
+| JDCruncheR    | ❌                | ✔️               | <https://github.com/InseeFr/JDCruncheR>      |
+| rjwsacruncher | ✔️                | ✔️               | <https://github.com/AQLT/rjwsacruncher>      |
+| rjdmarkdown   | ✔️                | ✔️               | <https://github.com/AQLT/rjdmarkdown>        |
+
+The packages installation code is below:
+
+``` r
+# If remotes is not installed
+# install.packages("remotes")
+
+install.packages("RJDemetra")
+install.packages("rjwsacruncher")
+install.packages("rjdmarkdown")
+
+remotes::install_github("InseeFrLab/rjdworkspace")
+remotes::install_github("InseeFr/JDCruncheR")
+
+# Under AUS and on Insee computers
+install.packages("rjdworkspace", repos = "https://nexus.insee.fr/repository/r-public")
+install.packages("JDCruncheR", repos = "https://nexus.insee.fr/repository/r-public")
+```
+
+#### R packages for JDemetra+ version 3.x
+
+Currently version 3 packages are NOT on CRAN. To install them, you need
+to go through Github:
+
+``` r
+# If remotes is not installed
+# install.packages("remotes")
+
+remotes::install_github("rjdemetra/rjd3toolkit")
+
+remotes::install_github("rjdemetra/rjd3x13")
+remotes::install_github("rjdemetra/rjd3tramoseats")
+
+remotes::install_github("rjdemetra/rjd3providers")
+remotes::install_github("rjdemetra/rjdemetra3")
+
+remotes::install_github("rjdemetra/rjd3filters")
+remotes::install_github("rjdemetra/rjd3x11plus")
+
+remotes::install_github("rjdemetra/rjd3sts")
+remotes::install_github("rjdemetra/rjd3highfreq")
+remotes::install_github("rjdemetra/rjd3stl")
+
+remotes::install_github("rjdemetra/rjd3revisions")
+remotes::install_github("rjdemetra/rjd3bench")
+remotes::install_github("rjdemetra/rjd3nowcasting")
+
+remotes::install_github("AQLT/ggdemetra3")
+```
+
+## Environment variables
+
+### In Rstudio
+
+To add environment variables in Rstudio, you need to add the variable’s
+name and the variable’s value. There are 2 ways to fill it:
+
+- Using the `.Renviron` file:
+
+  - **Launch** the code `file.edit("~/.Renviron")` or
+    `usethis::edit_r_environ()` (with the package **usethis** and the
+    argument `scope` which egals `"user"` or `"project"` if you are in a
+    R project)
+  - **Add** the variables to the file (with new lines)
+  - **Save** the file
+
+- Using the `.Rprofile` file:
+
+  - **Launch** the code `file.edit("~/.Rprofile")` or
+    `usethis::edit_r_profile()` (with the package **usethis** and the
+    argument `scope` which egals `"user"` or `"project"` if you are in a
+    R project)
+  - **Add** the variables with the fonction `Sys.setenv()` (with new
+    lines)
+  - **Save** the file
+
+### PATH
+
+The environment variable `PATH` in **R** is used to indicate to **R**
+where to find the executable files.
+
+When you install a new software (for example JDemetra+, Rtools, Java…)
+that Rstudio uses, you have to modify this environment variable:
+
+- **Get** the actual value of the variable `PATH` via the **R** command
+  `Sys.getenv("PATH")` (Rstudio returns a succession of addresses as
+  `C:/WINDOWS/system32;C:/WINDOWS`)
+
+- **Copy paste** this value after `PATH =` and add the paths towards the
+  folder ${\textsf{\color{#006817}{\\\\bin\\\\}}}$ (binary) of the
+  software newly installed, by separating them with semicolon (without
+  space before or after). For the Rtools installation, the path is
+  ${\textsf{\color{#006817}{C:\\\\rtools42\\\\mingw64\\\\bin}}}$
+  (depending on where Rtools was installed). You have to add
+  `C:\\rtools42\\mingw64\\bin` or `C:/rtools42/mingw64/bin` (In **R**,
+  `\` is a special character, so you have to replace the `\` by `/` or
+  by `\\`). The path becomes
+  `C:/WINDOWS/system32;C:/WINDOWS;C:/rtools42/mingw64/bin`.
+
+- **Modify** the variable with the function `Sys.setenv()`. For Rtools,
+  the command to launch is:
+
+  ``` r
+  Sys.setenv(PATH = "C:/WINDOWS/system32;C:/WINDOWS;C:/rtools42/mingw64/bin")
+  ```
+
+ℹ️ NB: Generally a 32 bits version and a 64 bits version are available
+for downloading and installing a software. You need to check your
+processor type of your operating system to choose the right folder to
+download.
+
+For this, you can launch the command:
+
+``` r
+Sys.getenv("R_ARCH")
+Sys.info()[["machine"]]
+```
+
+According to the result, the version is 32 bits or 64 bits :
+
+| Version | Output |
+|---------|--------|
+| 64 bits | /x64   |
+|         | x86-64 |
+|         |        |
+| 32 bits | /i386  |
+|         | x86_32 |
+
+More information on the variable `PATH` via the page
+<https://java.com/fr/download/help/path.xml>.
+
+## Check your set up
+
+To ensure that everything works fine, you can launch some example of
+**R** code and check that there is no error:
+
+``` r
+library("RJDemetra")
+
+myseries <- ipi_c_eu[, "FR"]
+x13_model <- x13(myseries) # X-13ARIMA method
+ts_model <- tramoseats(myseries) # TRAMO-SEATS method
+
+# Basic plot with the original series, the trend and the SA series
+plot(x13_model, type_chart = "sa-trend")
+```
+
+To check the Java version we are using on **R**, you can try to install
+and use the package **rJava** and launch the command below:
+
+``` r
+# If rJava is not installed
+install.packages("rJava")
+```
+
+If the installation of **rJava** returns an error, it means that Java
+was incorrectly installed or incorrectly configured on **R**. You need
+to get back to the section [Environment variables](#var_env).
+
+This block of code tests the Java version with which **R** works:
+
+``` r
+library("rJava")
+.jinit()
+.jcall("java/lang/System", "S", "getProperty", "java.runtime.version")
+```
+
+Finally, you can consult the Java version installed with which Windows
+works (it doesn’t matter to us):
+
+``` r
+system("java -version")
+```
+
+## Optional installations
+
+Some supplementary installations are optional (that is they are no
+mandatory but bring external features):
+
+- [Miktek](https://miktex.org/howto/install-miktex) to produce PDF
+  document with Latex
+- [Rtools](https://cran.r-project.org/bin/windows/Rtools/rtools42/rtools.html)
+  to develop **R** packages and compile the code
+
+## Problems you may encounter
+
+### Problems installing **R** packages
+
+If you get the following error while installing **R** packages:
+
+``` r
+install.packages("RJDemetra")
+```
+
+    ## Error in eval(expr, envir, enclos): Erreur: the chargement a échoué
+    ## Exécution arrêtée
+    ## *** arch - x64
+
+The problem doesn’t come from Java but from the **R** package. By
+default, the package is installed from a “source” file, it means that
+the package is recompiled. For some computing reasons, when compiling by
+default, **R** uses the system (Windows) parameters (which doesn’t have
+necessarily have the correct Java version).
+
+There are two solutions:
+
+- Compile the package by installing from the binary file:
+
+  ``` r
+  install.packages("RJDemetra", type = "binary")
+  ```
+
+- Specify that we want to use the local parameters:
+
+  ``` r
+  install.packages("RJDemetra", type = "source", INSTALL_opts = "--no-multiarch")
+  ```
+
+ℹ️ More information:
+<https://github.com/jdemetra/rjdemetra/wiki/Installation-manual>
+
+### The command `library("RJDemetra")` returns an error message
+
+The package <span class="RPackages">\*\*{RJDemetra</span> requires Java
+version 8 or higher to work. If another package has been loaded before
+<span class="RPackages">**{RJDemetra}**</span> via the function
+`library()` and which doesn’t requires an updated Java version, then an
+old Java version will be used during all the session (**R** is
+refractory to in-session version change). In case of using
+<span class="RPackages">**{RJDemetra}**</span> in a program, you have to
+specify at the very beginning of the program that **R** must use Java
+version 8, via the command:
+
+``` r
+# Where Java is installed
+Sys.setenv(JAVA_HOME = "C:/Users/Software/Java17/jdk17")
+```
+
+or load <span class="RPackages">**{RJDemetra}**</span> first
+
+``` r
+# At the beginning of program
+library("RJDemetra")
+```
+
+Else you have to restart a new **R** session.
+
+### `Error array index = -1`
+
+The message of the type `Error array index = -1` tells that an auxiliary
+variable is not found. It can be calendar regressor or other user
+defined variables (Easter effect, PSO = pure seasonal outlier…).
+
+### The function `cruncher_and_param(...)` of the <span class="RPackages">**{JDCruncheR}**</span> package returns an error
+
+When you use the function `cruncher_and_param(...)` of the
+<span class="RPackages">**{JDCruncheR}**</span> package, you can get the
+following error:
+
+    ## Error in eval(expr, envir, enclos): Error in cruncher(workspace = workspace, cruncher_bin_directory = cruncher_bin_directory,  : 
+    ##   There is an error in the path to the cruncher bin folder
+
+That means that the path to the cruncher is incorrectly configured. To
+solve this, you need to specify to R the path to the cruncher at the
+start of the program withe the function `options(...)` :
+
+``` r
+options(cruncher_bin_directory = "C:/Users/Software/jwsacruncher-2.2.4-bin/bin")
+```
+
+To check that the path is valid, you could use the function
+`getOption(...)` :
+
+``` r
+getOption("cruncher_bin_directory")
+```