[add] added legend alignment option

plotter/pinger.gp

@@ -19,7 +19,11 @@ col_average=5
 col_max=6
 col_deviation=7
 
+# legend alignment
+legend_align="center"
+
 if(exists("TZ")) tz=TZ*3600
+if(exists("LEGEND_ALIGN")) legend_align=LEGEND_ALIGN
 # gnuplot does not like spaces in -e so we recreate them here via system call to sed
 if(exists("SERVERS")) server_list=system("echo '".SERVERS."' | sed 's|;| |g'")
 if(exists("CSV_FILE")) csv_file=CSV_FILE
@@ -46,7 +50,9 @@ set key box lt rgb "#000000"
 set key width 1.5
 set key height 0.5
 set key samplen 0.1
-set key center top
+if (legend_align eq "left") set key left top
+if (legend_align eq "center") set key center top
+if (legend_align eq "right") set key right top
 ## axis
 set y2tics # enable second axis
 set ytics nomirror # dont show the tics on that side