Perform natural sorting on file names before plotting profiles

trimsp/TrimSPGUI/TrimSPGUI.ui.h

@@ -672,7 +672,11 @@ void TrimSPGUI::PlotProfiles()
 	    this,
 	    "Select RGE files dialog",
 	    "Choose RGE file to plot");
-    my @files = @$files_ref;
+    my @files_tmp = @$files_ref;
+# Do "natural" sorting on the file name list
+# This will produce (hopefully) a plot with largest needed depth scale 
+    my @files = grep {s/(^|\D)0+(\d)/$1$2/g,1} sort grep {s/(\d+)/sprintf"%06.6d",$1/ge,1} @files_tmp;
+
     my $filenames=join(",",@files);
     
     if ($filenames ne "" ) {