trying to make perl scripts to plot data

scripts/extract_power_curve.pl

@@ -0,0 +1,4 @@
+#!/usr/local/bin/perl
+
+use PDL::Graphics::Gnuplot;
+gplot( xvals(5)**2 );

scripts/uninstall.pl

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+#!/usr/local/bin/perl
+
+# uninstall_perl_module.pl from PerlTricks.com
+
+use 5.14.2;
+use ExtUtils::Installed;
+use ExtUtils::Packlist;
+
+# Exit unless a module name was passed
+die ("Error: no Module::Name passed as an argument. E.G.\n\t perl $0 Module::Name\n") unless $#ARGV == 0;
+
+my $module = shift @ARGV;
+
+my $installed_modules = ExtUtils::Installed->new;
+
+# iterate through and try to delete every file associated with the module
+foreach my $file ($installed_modules->files($module)) {
+    print "removing $file\n";
+    unlink $file or warn "could not remove $file: $!\n";
+}
+
+# delete the module packfile
+my $packfile = $installed_modules->packlist($module)->packlist_file;
+print "removing $packfile\n";
+unlink $packfile or warn "could not remove $packfile: $!\n";
+