diff --git a/DESCRIPTION b/DESCRIPTION
index 3aa741f..f19647d 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,7 +2,7 @@ Package: ggfortify
 Type: Package
 Title: Data Visualization Tools for Statistical Analysis Results
 Version: 0.4.6
-Date: 2018-05-26
+Date: 2019-03-12
 Authors@R: c(
   person("Masaaki", "Horikoshi", role = c("aut"),
          email = "sinhrks@gmail.com"),
@@ -67,4 +67,4 @@ Suggests:
     xts,
     zoo,
     lfda
-RoxygenNote: 6.0.1
+RoxygenNote: 6.1.0
diff --git a/man/autoplot.acf.Rd b/man/autoplot.acf.Rd
index bbee5ba..b0d0326 100644
--- a/man/autoplot.acf.Rd
+++ b/man/autoplot.acf.Rd
@@ -8,9 +8,10 @@ standard plot output}
 \method{autoplot}{acf}(object, colour = "#000000", linetype = "solid",
   conf.int = TRUE, conf.int.colour = "#0000FF",
   conf.int.linetype = "dashed", conf.int.fill = NULL,
-  conf.int.alpha = 0.3, conf.int.value = 0.95, conf.int.type = "white",
-  xlim = c(NA, NA), ylim = c(NA, NA), log = "", main = NULL,
-  xlab = NULL, ylab = "ACF", asp = NULL, ...)
+  conf.int.alpha = 0.3, conf.int.value = 0.95,
+  conf.int.type = "white", xlim = c(NA, NA), ylim = c(NA, NA),
+  log = "", main = NULL, xlab = NULL, ylab = "ACF", asp = NULL,
+  ...)
 }
 \arguments{
 \item{object}{\code{stats::acf} instance}
diff --git a/man/autoplot.breakpoints.Rd b/man/autoplot.breakpoints.Rd
index cc0877e..7159f45 100644
--- a/man/autoplot.breakpoints.Rd
+++ b/man/autoplot.breakpoints.Rd
@@ -5,8 +5,8 @@
 \alias{autoplot.breakpointsfull}
 \title{Autoplot \code{strucchange::breakpoints}}
 \usage{
-\method{autoplot}{breakpoints}(object, data = NULL, cpt.colour = "#FF0000",
-  cpt.linetype = "dashed", ...)
+\method{autoplot}{breakpoints}(object, data = NULL,
+  cpt.colour = "#FF0000", cpt.linetype = "dashed", ...)
 }
 \arguments{
 \item{object}{\code{strucchange::breakpoints} or \code{strucchange::breakpointsfull} instance.}
diff --git a/man/autoplot.cv.glmnet.Rd b/man/autoplot.cv.glmnet.Rd
index e1ef824..82319ab 100644
--- a/man/autoplot.cv.glmnet.Rd
+++ b/man/autoplot.cv.glmnet.Rd
@@ -7,10 +7,11 @@
 \method{autoplot}{cv.glmnet}(object, sign.lambda = 1, label.n = 12,
   label = TRUE, label.label = "nz", label.colour = NULL,
   label.alpha = NULL, label.size = NULL, label.angle = NULL,
-  label.family = NULL, label.fontface = NULL, label.lineheight = NULL,
-  label.hjust = NULL, label.vjust = NULL, label.repel = FALSE,
-  xlim = c(NA, NA), ylim = c(NA, NA), log = "", main = NULL,
-  xlab = NULL, ylab = NULL, asp = NULL, ...)
+  label.family = NULL, label.fontface = NULL,
+  label.lineheight = NULL, label.hjust = NULL, label.vjust = NULL,
+  label.repel = FALSE, xlim = c(NA, NA), ylim = c(NA, NA),
+  log = "", main = NULL, xlab = NULL, ylab = NULL, asp = NULL,
+  ...)
 }
 \arguments{
 \item{object}{\code{glmnet::cv.glmnet} instance}
diff --git a/man/autoplot.density.Rd b/man/autoplot.density.Rd
index a812280..fbd7465 100644
--- a/man/autoplot.density.Rd
+++ b/man/autoplot.density.Rd
@@ -6,8 +6,8 @@
 \usage{
 \method{autoplot}{density}(object, p = NULL, colour = "#000000",
   linetype = NULL, fill = NULL, alpha = NULL, xlim = c(NA, NA),
-  ylim = c(NA, NA), log = "", main = NULL, xlab = NULL, ylab = NULL,
-  asp = NULL, ...)
+  ylim = c(NA, NA), log = "", main = NULL, xlab = NULL,
+  ylab = NULL, asp = NULL, ...)
 }
 \arguments{
 \item{object}{\code{stats::density} instance}
diff --git a/man/autoplot.forecast.Rd b/man/autoplot.forecast.Rd
index 7eee4c7..eaa5dbb 100644
--- a/man/autoplot.forecast.Rd
+++ b/man/autoplot.forecast.Rd
@@ -5,11 +5,11 @@
 \title{Autoplot \code{forecast::forecast}}
 \usage{
 \method{autoplot}{forecast}(object, is.date = NULL, ts.connect = TRUE,
-  predict.geom = "line", predict.colour = "#0000FF", predict.size = NULL,
-  predict.linetype = NULL, predict.alpha = NULL, predict.fill = NULL,
-  predict.shape = NULL, conf.int = TRUE, conf.int.colour = "#0000FF",
-  conf.int.linetype = "none", conf.int.fill = "#000000",
-  conf.int.alpha = 0.3, ...)
+  predict.geom = "line", predict.colour = "#0000FF",
+  predict.size = NULL, predict.linetype = NULL, predict.alpha = NULL,
+  predict.fill = NULL, predict.shape = NULL, conf.int = TRUE,
+  conf.int.colour = "#0000FF", conf.int.linetype = "none",
+  conf.int.fill = "#000000", conf.int.alpha = 0.3, ...)
 }
 \arguments{
 \item{object}{\code{forecast::forecast} instance}
diff --git a/man/autoplot.glmnet.Rd b/man/autoplot.glmnet.Rd
index ada26a6..908955d 100644
--- a/man/autoplot.glmnet.Rd
+++ b/man/autoplot.glmnet.Rd
@@ -5,12 +5,12 @@
 \title{Autoplot \code{glmnet::glmnet}}
 \usage{
 \method{autoplot}{glmnet}(object, xvar = c("norm", "lambda", "dev"),
-  label.n = 7, label = TRUE, label.label = "Df", label.colour = NULL,
-  label.alpha = NULL, label.size = NULL, label.angle = NULL,
-  label.family = NULL, label.fontface = NULL, label.lineheight = NULL,
-  label.hjust = NULL, label.vjust = NULL, xlim = c(NA, NA), ylim = c(NA,
-  NA), log = "", main = NULL, xlab = NULL, ylab = "Coefficients",
-  asp = NULL, ...)
+  label.n = 7, label = TRUE, label.label = "Df",
+  label.colour = NULL, label.alpha = NULL, label.size = NULL,
+  label.angle = NULL, label.family = NULL, label.fontface = NULL,
+  label.lineheight = NULL, label.hjust = NULL, label.vjust = NULL,
+  xlim = c(NA, NA), ylim = c(NA, NA), log = "", main = NULL,
+  xlab = NULL, ylab = "Coefficients", asp = NULL, ...)
 }
 \arguments{
 \item{object}{\code{glmnet::glmnet} instance}
diff --git a/man/autoplot.list.Rd b/man/autoplot.list.Rd
index 468948a..d171443 100644
--- a/man/autoplot.list.Rd
+++ b/man/autoplot.list.Rd
@@ -4,8 +4,8 @@
 \alias{autoplot.list}
 \title{Autoplot list}
 \usage{
-\method{autoplot}{list}(object, data = NULL, nrow = NULL, ncol = NULL,
-  scales = "free_y", ...)
+\method{autoplot}{list}(object, data = NULL, nrow = NULL,
+  ncol = NULL, scales = "free_y", ...)
 }
 \arguments{
 \item{object}{\code{list} instance}
diff --git a/man/autoplot.lm.Rd b/man/autoplot.lm.Rd
index 0207787..6f82505 100644
--- a/man/autoplot.lm.Rd
+++ b/man/autoplot.lm.Rd
@@ -12,7 +12,8 @@
   label.lineheight = NULL, label.hjust = NULL, label.vjust = NULL,
   label.repel = FALSE, label.n = 3, smooth.colour = "#0000FF",
   smooth.linetype = "solid", ad.colour = "#888888",
-  ad.linetype = "dashed", ad.size = 0.2, nrow = NULL, ncol = NULL, ...)
+  ad.linetype = "dashed", ad.size = 0.2, nrow = NULL, ncol = NULL,
+  ...)
 }
 \arguments{
 \item{object}{\code{stats::lm} instance}
diff --git a/man/autoplot.map.Rd b/man/autoplot.map.Rd
index 0a13637..1ae524c 100644
--- a/man/autoplot.map.Rd
+++ b/man/autoplot.map.Rd
@@ -4,10 +4,11 @@
 \alias{autoplot.map}
 \title{Autoplot \code{maps::map}}
 \usage{
-\method{autoplot}{map}(object, p = NULL, geom = "path", group = "group",
-  colour = "black", size = NULL, linetype = NULL, alpha = NULL,
-  fill = NULL, shape = NULL, xlim = c(NA, NA), ylim = c(NA, NA),
-  log = "", main = NULL, xlab = "", ylab = "", asp = NULL, ...)
+\method{autoplot}{map}(object, p = NULL, geom = "path",
+  group = "group", colour = "black", size = NULL, linetype = NULL,
+  alpha = NULL, fill = NULL, shape = NULL, xlim = c(NA, NA),
+  ylim = c(NA, NA), log = "", main = NULL, xlab = "", ylab = "",
+  asp = NULL, ...)
 }
 \arguments{
 \item{object}{\code{maps::map} instance}
diff --git a/man/autoplot.matrix.Rd b/man/autoplot.matrix.Rd
index cf6947a..8cc9495 100644
--- a/man/autoplot.matrix.Rd
+++ b/man/autoplot.matrix.Rd
@@ -10,8 +10,9 @@
   label.colour = colour, label.alpha = NULL, label.size = NULL,
   label.angle = NULL, label.family = NULL, label.fontface = NULL,
   label.lineheight = NULL, label.hjust = NULL, label.vjust = NULL,
-  label.repel = FALSE, scale = NULL, xlim = c(NA, NA), ylim = c(NA, NA),
-  log = "", main = NULL, xlab = NULL, ylab = NULL, asp = NULL, ...)
+  label.repel = FALSE, scale = NULL, xlim = c(NA, NA), ylim = c(NA,
+  NA), log = "", main = NULL, xlab = NULL, ylab = NULL,
+  asp = NULL, ...)
 }
 \arguments{
 \item{object}{\code{base::matrix} instance}
diff --git a/man/autoplot.spec.Rd b/man/autoplot.spec.Rd
index 2d17cf2..16376e6 100644
--- a/man/autoplot.spec.Rd
+++ b/man/autoplot.spec.Rd
@@ -5,7 +5,8 @@
 \title{Autoplot \code{stats::spec}}
 \usage{
 \method{autoplot}{spec}(object, xlim = c(NA, NA), ylim = c(NA, NA),
-  log = "y", main = NULL, xlab = NULL, ylab = NULL, asp = NULL, ...)
+  log = "y", main = NULL, xlab = NULL, ylab = NULL, asp = NULL,
+  ...)
 }
 \arguments{
 \item{object}{\code{stats::spec} instance}
diff --git a/man/autoplot.stepfun.Rd b/man/autoplot.stepfun.Rd
index 38a48d4..5dd80fa 100644
--- a/man/autoplot.stepfun.Rd
+++ b/man/autoplot.stepfun.Rd
@@ -6,8 +6,8 @@
 \usage{
 \method{autoplot}{stepfun}(object, colour = NULL, size = NULL,
   linetype = NULL, alpha = NULL, shape = 1, xlim = c(NA, NA),
-  ylim = c(NA, NA), log = "", main = NULL, xlab = NULL, ylab = NULL,
-  asp = NULL, ...)
+  ylim = c(NA, NA), log = "", main = NULL, xlab = NULL,
+  ylab = NULL, asp = NULL, ...)
 }
 \arguments{
 \item{object}{\code{stats::stepfun} instance}
diff --git a/man/autoplot.survfit.Rd b/man/autoplot.survfit.Rd
index 0aa615e..aa5e30a 100644
--- a/man/autoplot.survfit.Rd
+++ b/man/autoplot.survfit.Rd
@@ -13,9 +13,9 @@
   conf.int.alpha = 0.3, censor = TRUE, censor.colour = NULL,
   censor.size = 3, censor.alpha = NULL, censor.shape = "+",
   facets = FALSE, nrow = NULL, ncol = 1, grid = FALSE,
-  strip_swap = FALSE, scales = "free_y", xlim = c(NA, NA), ylim = c(NA,
-  NA), log = "", main = NULL, xlab = NULL, ylab = NULL, asp = NULL,
-  ...)
+  strip_swap = FALSE, scales = "free_y", xlim = c(NA, NA),
+  ylim = c(NA, NA), log = "", main = NULL, xlab = NULL,
+  ylab = NULL, asp = NULL, ...)
 }
 \arguments{
 \item{object}{\code{survival::survfit} instance}
diff --git a/man/autoplot.ts.Rd b/man/autoplot.ts.Rd
index 16769d0..26e4d08 100644
--- a/man/autoplot.ts.Rd
+++ b/man/autoplot.ts.Rd
@@ -12,12 +12,13 @@
 \method{autoplot}{ts}(object, columns = NULL, group = NULL,
   is.date = NULL, index.name = "Index", p = NULL, ts.scale = FALSE,
   stacked = FALSE, facets = TRUE, nrow = NULL, ncol = 1,
-  scales = "free_y", ts.geom = "line", ts.colour = NULL, ts.size = NULL,
-  ts.linetype = NULL, ts.alpha = NULL, ts.fill = NULL, ts.shape = NULL,
-  geom = ts.geom, colour = ts.colour, size = ts.size,
-  linetype = ts.linetype, alpha = ts.alpha, fill = ts.fill,
-  shape = ts.shape, xlim = c(NA, NA), ylim = c(NA, NA), log = "",
-  main = NULL, xlab = "", ylab = "", asp = NULL, ...)
+  scales = "free_y", ts.geom = "line", ts.colour = NULL,
+  ts.size = NULL, ts.linetype = NULL, ts.alpha = NULL,
+  ts.fill = NULL, ts.shape = NULL, geom = ts.geom,
+  colour = ts.colour, size = ts.size, linetype = ts.linetype,
+  alpha = ts.alpha, fill = ts.fill, shape = ts.shape, xlim = c(NA,
+  NA), ylim = c(NA, NA), log = "", main = NULL, xlab = "",
+  ylab = "", asp = NULL, ...)
 }
 \arguments{
 \item{object}{time-series-like instance}
diff --git a/man/autoplot.tsmodel.Rd b/man/autoplot.tsmodel.Rd
index f5d8fa7..94cc45e 100644
--- a/man/autoplot.tsmodel.Rd
+++ b/man/autoplot.tsmodel.Rd
@@ -11,9 +11,10 @@
 \usage{
 \method{autoplot}{tsmodel}(object, data = NULL, predict = NULL,
   is.date = NULL, ts.connect = TRUE, fitted.geom = "line",
-  fitted.colour = "#FF0000", fitted.size = NULL, fitted.linetype = NULL,
-  fitted.alpha = NULL, fitted.fill = NULL, fitted.shape = NULL,
-  predict.geom = "line", predict.colour = "#0000FF", predict.size = NULL,
+  fitted.colour = "#FF0000", fitted.size = NULL,
+  fitted.linetype = NULL, fitted.alpha = NULL, fitted.fill = NULL,
+  fitted.shape = NULL, predict.geom = "line",
+  predict.colour = "#0000FF", predict.size = NULL,
   predict.linetype = NULL, predict.alpha = NULL, predict.fill = NULL,
   predict.shape = NULL, conf.int = TRUE, conf.int.colour = "#0000FF",
   conf.int.linetype = "none", conf.int.fill = "#000000",
diff --git a/man/autoplot.varprd.Rd b/man/autoplot.varprd.Rd
index e54ae6b..cb9e9d0 100644
--- a/man/autoplot.varprd.Rd
+++ b/man/autoplot.varprd.Rd
@@ -5,11 +5,12 @@
 \title{Autoplot \code{vars::varprd}}
 \usage{
 \method{autoplot}{varprd}(object, is.date = NULL, ts.connect = TRUE,
-  scales = "free_y", predict.geom = "line", predict.colour = "#0000FF",
-  predict.size = NULL, predict.linetype = NULL, predict.alpha = NULL,
-  predict.fill = NULL, predict.shape = NULL, conf.int = TRUE,
-  conf.int.colour = "#0000FF", conf.int.linetype = "none",
-  conf.int.fill = "#000000", conf.int.alpha = 0.3, ...)
+  scales = "free_y", predict.geom = "line",
+  predict.colour = "#0000FF", predict.size = NULL,
+  predict.linetype = NULL, predict.alpha = NULL, predict.fill = NULL,
+  predict.shape = NULL, conf.int = TRUE, conf.int.colour = "#0000FF",
+  conf.int.linetype = "none", conf.int.fill = "#000000",
+  conf.int.alpha = 0.3, ...)
 }
 \arguments{
 \item{object}{\code{vars::varpred} instance}
diff --git a/man/fortify.ts.Rd b/man/fortify.ts.Rd
index 923c040..0739337 100644
--- a/man/fortify.ts.Rd
+++ b/man/fortify.ts.Rd
@@ -4,9 +4,9 @@
 \alias{fortify.ts}
 \title{Convert time-series-like to data.frame}
 \usage{
-\method{fortify}{ts}(model, data = NULL, columns = NULL, is.date = NULL,
-  index.name = "Index", data.name = "Data", scale = FALSE, melt = FALSE,
-  ...)
+\method{fortify}{ts}(model, data = NULL, columns = NULL,
+  is.date = NULL, index.name = "Index", data.name = "Data",
+  scale = FALSE, melt = FALSE, ...)
 }
 \arguments{
 \item{model}{time-series-like instance}
diff --git a/man/ggbiplot.Rd b/man/ggbiplot.Rd
index 0375af3..0fa02d0 100644
--- a/man/ggbiplot.Rd
+++ b/man/ggbiplot.Rd
@@ -8,18 +8,19 @@ ggbiplot(plot.data, loadings.data = NULL, colour = NULL, size = NULL,
   linetype = NULL, alpha = NULL, fill = NULL, shape = NULL,
   label = FALSE, label.label = "rownames", label.colour = colour,
   label.alpha = NULL, label.size = NULL, label.angle = NULL,
-  label.family = NULL, label.fontface = NULL, label.lineheight = NULL,
-  label.hjust = NULL, label.vjust = NULL, label.repel = FALSE,
-  loadings = FALSE, loadings.colour = "#FF0000", loadings.label = FALSE,
-  loadings.label.label = "rownames", loadings.label.colour = "#FF0000",
-  loadings.label.alpha = NULL, loadings.label.size = NULL,
-  loadings.label.angle = NULL, loadings.label.family = NULL,
-  loadings.label.fontface = NULL, loadings.label.lineheight = NULL,
-  loadings.label.hjust = NULL, loadings.label.vjust = NULL,
-  loadings.label.repel = FALSE, label.show.legend = NA, frame = FALSE,
-  frame.type = NULL, frame.colour = colour, frame.level = 0.95,
-  frame.alpha = 0.2, xlim = c(NA, NA), ylim = c(NA, NA), log = "",
-  main = NULL, xlab = NULL, ylab = NULL, asp = NULL, ...)
+  label.family = NULL, label.fontface = NULL,
+  label.lineheight = NULL, label.hjust = NULL, label.vjust = NULL,
+  label.repel = FALSE, loadings = FALSE, loadings.colour = "#FF0000",
+  loadings.label = FALSE, loadings.label.label = "rownames",
+  loadings.label.colour = "#FF0000", loadings.label.alpha = NULL,
+  loadings.label.size = NULL, loadings.label.angle = NULL,
+  loadings.label.family = NULL, loadings.label.fontface = NULL,
+  loadings.label.lineheight = NULL, loadings.label.hjust = NULL,
+  loadings.label.vjust = NULL, loadings.label.repel = FALSE,
+  label.show.legend = NA, frame = FALSE, frame.type = NULL,
+  frame.colour = colour, frame.level = 0.95, frame.alpha = 0.2,
+  xlim = c(NA, NA), ylim = c(NA, NA), log = "", main = NULL,
+  xlab = NULL, ylab = NULL, asp = NULL, ...)
 }
 \arguments{
 \item{plot.data}{data.frame}
diff --git a/man/ggdistribution.Rd b/man/ggdistribution.Rd
index 2c62407..30acfd5 100644
--- a/man/ggdistribution.Rd
+++ b/man/ggdistribution.Rd
@@ -4,8 +4,8 @@
 \alias{ggdistribution}
 \title{Plot distribution}
 \usage{
-ggdistribution(func, x, p = NULL, colour = "#000000", linetype = NULL,
-  fill = NULL, alpha = NULL, ...)
+ggdistribution(func, x, p = NULL, colour = "#000000",
+  linetype = NULL, fill = NULL, alpha = NULL, ...)
 }
 \arguments{
 \item{func}{PDF or CDF function}
diff --git a/man/ggfreqplot.Rd b/man/ggfreqplot.Rd
index fa23af0..7ba4c37 100644
--- a/man/ggfreqplot.Rd
+++ b/man/ggfreqplot.Rd
@@ -7,7 +7,8 @@
 ggfreqplot(data, freq = NULL, nrow = NULL, ncol = NULL,
   conf.int = FALSE, conf.int.colour = "#0000FF",
   conf.int.linetype = "dashed", conf.int.fill = NULL,
-  conf.int.alpha = 0.3, conf.int.value = 0.95, facet.labeller = NULL, ...)
+  conf.int.alpha = 0.3, conf.int.value = 0.95, facet.labeller = NULL,
+  ...)
 }
 \arguments{
 \item{data}{\code{stats::ts} instance}
diff --git a/man/ggmultiplot-class.Rd b/man/ggmultiplot-class.Rd
index c84dcc9..9a24c50 100644
--- a/man/ggmultiplot-class.Rd
+++ b/man/ggmultiplot-class.Rd
@@ -4,7 +4,6 @@
 \name{ggmultiplot-class}
 \alias{ggmultiplot-class}
 \alias{length,ggmultiplot-method}
-\alias{[,ggmultiplot,ANY,ANY-method}
 \alias{[,ggmultiplot-method}
 \alias{[[,ggmultiplot-method}
 \alias{[<-,ggmultiplot-method}
@@ -13,7 +12,7 @@
 \usage{
 \S4method{length}{ggmultiplot}(x)
 
-\S4method{[}{ggmultiplot,ANY,ANY}(x, i, j, ..., drop = TRUE)
+\S4method{[}{ggmultiplot}(x, i, j, ..., drop = TRUE)
 
 \S4method{[[}{ggmultiplot}(x, i, j, ..., drop)
 
diff --git a/man/ggtsdiag.Rd b/man/ggtsdiag.Rd
index f769975..08dbaad 100644
--- a/man/ggtsdiag.Rd
+++ b/man/ggtsdiag.Rd
@@ -7,7 +7,8 @@
 ggtsdiag(object, gof.lag = 10, conf.int = TRUE,
   conf.int.colour = "#0000FF", conf.int.linetype = "dashed",
   conf.int.fill = NULL, conf.int.alpha = 0.3, ad.colour = "#888888",
-  ad.linetype = "dashed", ad.size = 0.2, nrow = NULL, ncol = 1, ...)
+  ad.linetype = "dashed", ad.size = 0.2, nrow = NULL, ncol = 1,
+  ...)
 }
 \arguments{
 \item{object}{A fitted time-series model}