--- a
+++ b/man/log10div.Rd
@@ -0,0 +1,29 @@
+\name{log10div}
+\alias{log10div}
+\title{
+log10 with sign
+}
+\description{
+The function calculates the log10 of the given value and returns
+it together with the sign of the input value.
+}
+\usage{
+log10div(x)
+}
+\arguments{
+  \item{x}{numeric vector}
+}
+\details{
+This function is useful when coloring p-values stratified by two
+possible effect directions (sensitivity and resistance in our case).
+
+}
+\value{
+numeric vector
+}
+\author{
+Małgorzata Oleś <dr.malgorzata.oles@gmail.com>
+}
+\examples{
+log10div(x=c(-10,10))
+}