Reset "par" with defaut values

Enter in R or Rstudio and do:

dput(par(no.readonly = TRUE))

Copy the list() that is shown, for example for me:

list(xlog = FALSE, ylog = FALSE, adj = 0.5, ann = TRUE, ask = FALSE,
    bg = "white", bty = "o", cex = 1, cex.axis = 1, cex.lab = 1,
    cex.main = 1.2, cex.sub = 1, col = "black", col.axis = "black",
    col.lab = "black", col.main = "black", col.sub = "black",
    crt = 0, err = 0L, family = "", fg = "black", fig = c(0,
    1, 0, 1), fin = c(9.47674418604651, 8.72093023255814), font = 1L,
    font.axis = 1L, font.lab = 1L, font.main = 2L, font.sub = 1L,
    lab = c(5L, 5L, 7L), las = 0L, lend = "round", lheight = 1,
    ljoin = "round", lmitre = 10, lty = "solid", lwd = 1, mai = c(1.02,
    0.82, 0.82, 0.42), mar = c(5.1, 4.1, 4.1, 2.1), mex = 1,
    mfcol = c(1L, 1L), mfg = c(1L, 1L, 1L, 1L), mfrow = c(1L,
    1L), mgp = c(3, 1, 0), mkh = 0.001, new = FALSE, oma = c(0,
    0, 0, 0), omd = c(0, 1, 0, 1), omi = c(0, 0, 0, 0), pch = 1L,
    pin = c(8.23674418604651, 6.88093023255814), plt = c(0.0865276073619632,
    0.955680981595092, 0.11696, 0.905973333333333), ps = 12L,
    pty = "m", smo = 1, srt = 0, tck = NA_real_, tcl = -0.5,
    usr = c(1.136, 2.864, 1.136, 2.864), xaxp = c(1.5, 2.5, 2
    ), xaxs = "r", xaxt = "s", xpd = FALSE, yaxp = c(1.5, 2.5,
    2), yaxs = "r", yaxt = "s", ylbias = 0.2)

In .Rprofile, enter these commands:

parReset_env <- new.env()
assign(x="parReset", 
list(xlog = FALSE, ylog = FALSE, adj = 0.5, ann = TRUE, ask = FALSE,
    bg = "white", bty = "o", cex = 1, cex.axis = 1, cex.lab = 1,
    cex.main = 1.2, cex.sub = 1, col = "black", col.axis = "black",
    col.lab = "black", col.main = "black", col.sub = "black",
    crt = 0, err = 0L, family = "", fg = "black", fig = c(0,
    1, 0, 1), fin = c(9.47674418604651, 8.72093023255814), font = 1L,
    font.axis = 1L, font.lab = 1L, font.main = 2L, font.sub = 1L,
    lab = c(5L, 5L, 7L), las = 0L, lend = "round", lheight = 1,
    ljoin = "round", lmitre = 10, lty = "solid", lwd = 1, mai = c(1.02,
    0.82, 0.82, 0.42), mar = c(5.1, 4.1, 4.1, 2.1), mex = 1,
    mfcol = c(1L, 1L), mfg = c(1L, 1L, 1L, 1L), mfrow = c(1L,
    1L), mgp = c(3, 1, 0), mkh = 0.001, new = FALSE, oma = c(0,
    0, 0, 0), omd = c(0, 1, 0, 1), omi = c(0, 0, 0, 0), pch = 1L,
    pin = c(8.23674418604651, 6.88093023255814), plt = c(0.0865276073619632,
    0.955680981595092, 0.11696, 0.905973333333333), ps = 12L,
    pty = "m", smo = 1, srt = 0, tck = NA_real_, tcl = -0.5,
    usr = c(1.136, 2.864, 1.136, 2.864), xaxp = c(1.5, 2.5, 2
    ), xaxs = "r", xaxt = "s", xpd = FALSE, yaxp = c(1.5, 2.5,
    2), yaxs = "r", yaxt = "s", ylbias = 0.2), envir = parReset_env)
parReset <- function() par(get(x="parReset", envir = parReset_env) )

Then you can reset default parameters with:

parReset()

It can be done without the creation of an environment, but this solution preserve the default parameters even if you erase the function parReset() by error.

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