Reset par to the default values at startup

Question

Normally when I make my own plot functions  I make a construct    op  lt - par  mypar  myvalue  on exit par op     which is the standard way of reverting the par to the previous values  Imagine you ve been running some functions that did change some of the pars  and you need to reset to the default values at startup in R  What is the convenient way of doing so    Or in other words   how does one reaches the default values for par

User · Answer

An alternative solution for preventing functions to change the user par  You can set the default parameters early on the function  so that the graphical parameters and layout will not be changed during the function execution  See  on exit for further details   on exit layout 1   opar lt -par no readonly TRUE  on exit par opar  add TRUE after FALSE

User · Answer

From Quick-R   par                  view current settings opar  lt - par          make a copy of current settings par col lab  red     red x and y labels  hist mtcars mpg      create a plot with these new settings  par opar             restore original settings

User · Answer

This is hacky  but   resetPar  lt - function         dev new       op  lt - par no readonly   TRUE      dev off       op     works after a fashion  but it does flash a new device on screen temporarily     E g     gt  par mfrow   c 2 2      some random par change  gt  par  mfrow    1  2 2  gt  par resetPar           reset the pars to defaults  gt  par  mfrow             back to default  1  1 1

User · Answer

Use below script to get back to normal  1 plot   par mfrow   c 1 1

User · Answer

dev off   is the best function  but it clears also all plots  If you want to keep plots in your window  at the beginning save default par settings      def par   par      Then when you use your par functions you still have a backup of default par settings  Later on  after generating plots  finish with      par def par   go back to default par settings   With this  you keep generated plots and reset par settings

User · Answer

Every time a new device is opened par   will reset  so another option is simply do dev off   and continue

[r] Reset par to the default values at startup

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