[fix] fixed gnuplot script and path in plot.sh

plotter/pinger.gp

@@ -31,7 +31,7 @@ set datafile separator ','
 
 # output settings
 #set terminal pngcairo size 800,600 enhanced font 'Segoe UI,10' # pngcairo cleaner than png
-set output 'ping.png'
+#set output 'ping.png'
 set encoding utf8
 
 # data settings

plotter/plot.sh

@@ -46,7 +46,7 @@ EOF
 
 script_path=$(cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd)
 
-plot_file="$script_path/pinger.gnuplot"
+plot_file="$script_path/pinger.gp"
 log_file="" # leave empty for stdout
 
 # defaults