<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1462943186798_6052"> Hello everyone,</div><div id="yui_3_16_0_ym19_1_1462943186798_6060" dir="ltr">I have installed ggplot2 in Ubuntu 15.04 to run r script . however after running (Rscript src/ndnSIM/examples/graphs/drop-graph.R).</div><div id="yui_3_16_0_ym19_1_1462943186798_6087" dir="ltr">I have gotten this message : Loading required package: methods</div><div id="yui_3_16_0_ym19_1_1462943186798_6098" dir="ltr">but I do not know with which command I can install this package.</div><div id="yui_3_16_0_ym19_1_1462943186798_6099" dir="ltr">Thanks in advance</div><div id="yui_3_16_0_ym19_1_1462943186798_6100" dir="ltr">regards<br id="yui_3_16_0_ym19_1_1462943186798_6054"></div></div></body></html>