@@ -1,6 +1,6 @@

 Package: qmtools

 Title: Quantitative Metabolomics Data Processing Tools

-Version: 0.99.3

+Version: 0.99.4

 Authors@R: c(

     person(given = "Jaehyun",

            family = "Joo",

@@ -97,15 +97,17 @@ plotRTgroup <- function(x, i, group, type = c("graph", "pairs"),

     } else {

         ## Background colors by feature group

         .panel.diagcol <- function(x, i, ...) {   

+            ## From 4.2, resetting graphical parameters with queried values seem

+            ## to raise a warning

             usr <- par("usr")

-            on.exit(par(usr))

+            ## on.exit(par(usr))

             rect(usr[1],usr[3],usr[2],usr[4], col = cols[i])

         }

         ## From pairs function examples

         .panel.cor <- function(x, y, digits = 2, prefix = "", cex.cor, ...) {

-            usr <- par("usr")

-            on.exit(par(usr))

+            ## usr <- par("usr")

+            ## on.exit(par(usr))

             par(usr = c(0, 1, 0, 1))

             ## r <- abs(cor(x, y))

             r <- cor(x, y)

@@ -27,8 +27,8 @@ knitr::opts_chunk$set(

 The `qmtools` package provides basic tools for imputation, normalization, and

 dimension-reduction of metabolomics data with the standard

-`SummarizedExperiment` class. It also provides several helper functions to

-assist visualization of data. This vignette is intended to brief descriptions of

+`SummarizedExperiment` class. It also offers several helper functions to assist

+visualization of data. This vignette gives brief descriptions of

 these tools with toy examples.

 # Installation