Lately I have been struggling to find a way to accomplish a line break in an R Markdown Report / Notebook. It is in fact described in the RStudio documentation, but it is rather difficult to find and not so well explained. This is what they have to say about it:
A backslash followed by a newline is also a hard line break.
Easy to overlook, and perhaps not so pedagogical.
What they mean is this:
\⎵⎵
That is, a backslash ( \ ) followed by two space characters ( ⎵⎵ ).
Enjoy!
A Shiny module is a piece of code that is included as part of a larger Shiny app. I wrote this small Shiny app as I could not find a really simple example elsewhere. It is based on the “Hello Shiny” example that comes with the Shiny package. You can run it with:
library(shiny)
runExample("01_hello")
Hello Shiny is a simple application that uses the sidebarLayout, with a sliderInput in the sidebarPanel and a histogram displayed in the mainPanel. My Shiny app modularizes the sidebarPanel part of the sidebarLayout.
You can see it in action here: https://xplor.shinyapps.io/module_example_1
The code is available here: https://github.com/samuel-bohman/module_example_1
Comment below if this was helpful to you.
Cheers!
Update!
Added a second version of modularized “Hello Shiny” that uses renderUI in the module that switches between two sliderInput functions.
You can see it in action here: https://xplor.shinyapps.io/module_example_2/
The code is available here: https://github.com/samuel-bohman/module_example_2
The default editor that comes with the UNIX operating system is called vi (visual editor). vi is case sensitive.
start vi
vi
quit vi
# quit and save
:x
# quit and save
:wq
# quit vi
:q
# quit without saving
:q!
start insert mode
press i key
turn off insert mode
press (Escape) key
There are many suggested solutions to this persistent problem (for example, here and here). None of them worked for me. However, after some trial and error I found a workable solution described here. Just download and install this Debian software package and see if it works for you too.
Here is the link (just in case): http://ftp.de.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.6_all.deb.
sudo echo "deb http://cran.rstudio.com/bin/linux/ubuntu xenial/" | sudo tee -a /etc/apt/sources.list
gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9
gpg -a --export E084DAB9 | sudo apt-key add -
sudo apt-get update
sudo apt-get install r-base r-base-dev
sudo apt-get install libcurl4-openssl-dev
sudo apt-get install gdebi-core
wget https://download1.rstudio.org/rstudio-1.0.44-amd64.deb
sudo gdebi -n rstudio-1.0.44-amd64.deb
rm rstudio-1.0.44-amd64.deb