Index: mttroot/mtt/bin/trans/struc2gnuplot_txt2wish
==================================================================
--- mttroot/mtt/bin/trans/struc2gnuplot_txt2wish
+++ mttroot/mtt/bin/trans/struc2gnuplot_txt2wish
@@ -18,10 +18,11 @@
 exec wish "\$0" "\$@"
 
 ## main window
 wm title . "MTT Viewer: ${sys}"
 set parameter ""
+set windownum 0
 
 # menu bar
 canvas .menubar
 
 menubutton .menubar.file -text "File" -menu .menubar.file.menu
@@ -169,16 +170,20 @@
 proc "plot_var" "title column" {
     set_plot_options
     puts "set term X11"
     global plottype
     if {"\$plottype" == "Multi Plot"} {
-	puts "replot '${dat2}' using 1:\$column title '\$title' with lines"
+	set plot "replot"
     } elseif {"\$plottype" == "New Window"} {
-	puts "! echo \"plot '${dat2}' using 1:\$column title '\$title' with lines\" | gnuplot -geometry 400x300 -persist"
+	global windownum
+	set windownum [ expr \$windownum + 1 ]
+	puts "set terminal x11 \$windownum"
+	set plot "plot"
     } else {
-	puts "plot '${dat2}' using 1:\$column title '\$title' with lines"
+	set plot "plot"
     }
+    puts "\$plot '${dat2}' using 1:\$column title '\$title' with lines"
 }
 
 proc "set_plot_options" "" {
     global coord;			# "Cartesian", "Polar"
     global grid;			# "Grid On", "Grid Off"