From 4c5d5683f58a772239d27761dab1414526fef64e Mon Sep 17 00:00:00 2001
From: Johannes Ranke <jranke@uni-bremen.de>
Date: Tue, 29 Apr 2014 08:12:11 +0200
Subject: Restore graphics parameters after plotting with residuals

---
 R/plot.mkinfit.R | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/R/plot.mkinfit.R b/R/plot.mkinfit.R
index 386452f..4132d96 100644
--- a/R/plot.mkinfit.R
+++ b/R/plot.mkinfit.R
@@ -60,6 +60,7 @@ plot.mkinfit <- function(x, fit = x,
   # Set up the plot if not to be added to an existing plot
   if (add == FALSE) {
     if (show_residuals) {
+      oldpar <- par(no.readonly = TRUE)
       layout(matrix(c(1, 2), 2, 1), heights = c(2, 1.3))
       par(mar = c(3, 4, 4, 2) + 0.1)
     }
@@ -92,5 +93,6 @@ plot.mkinfit <- function(x, fit = x,
       points(residuals_plot, pch = pch_obs[obs_var], col = col_obs[obs_var])
     }
     abline(h = 0, lty = 2)
+    par(oldpar, no.readonly = TRUE)
   }
 }
-- 
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