Hi Bruce, Thanks for your help. I made the changes you suggested and now get a different message: Global symbol "$data_object" requires explicit package name at LoadData.pl line 8. Execution of LoadData.pl aborted due to compilation errors. The script follows. #!/usr/bin/perl use Demeter qw(:ui=screen); my $data = Demeter::Data -> new(file => "data/fe.060", name => 'test', ); $data -> plot('E'); $data_object -> pause; Any further help is appreciated. Thanks, George On Sat, Apr 12, 2014 at 4:40 PM, Bruce Ravel wrote:

It would, of course, help to see the script, but I can guess what the issue is.

Try doing

use Demeter qw(:ui=screen);

at the top of the script, and

$data_object -> pause;

before it exits.

The specific message is issued because the perl script ended while the pipe to the gnuplot process was still open. That doesn't happen if you put in a pause. And you get to look at the plot before it vanishes!

B

On 04/11/2014 06:45 PM, George Sterbinsky wrote:

...

Hello,

I am trying to learn to use Demeter following The Demeter Programmer Guide. When I attempt to run the first example script in the importing data section I get the following error message:

Graphics::GnuplotIF (object 1): problem closing communication to gnuplot

I also see the plot window flash open and then closed on my screen.

I am using perl 5.16.1 on mac OSX 10.8.5. If anyone can provide any suggestions as to how I might correct this please let me know.

Thank you, George

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National Institute of Standards and Technology Synchrotron Science Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973

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Thank you Matt. The example script is now working. George On Sun, Apr 13, 2014 at 12:01 AM, Matt Newville wrote:

That should probably be

$data -> pause ;

--Matt

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