Ghostscript error with print function in Matlab

问题

I am trying to save images in Matlab by using the print function:

myImage = magic(500);

myFigure = figure('visible','off');

r = 1;
set(myFigure, 'PaperUnits', 'inches', 'PaperPosition', [0 0 1920 1080]/r);
% the program works fine on both computers without the line above
% however, the program runs fine on one computer only with this line

imagesc(myImage); axis image;

print(myFigure, '-dpng', sprintf('-r%d',r), 'myOutput.png');

When I run this program locally with Matlab R2012b, it works as expected. However, if I try to run it on a remote machine with Matlab R2011b, I get the following error message:

Error using ghostscript (line 188)
Problem converting PostScript. System returned error: -1.Failed to convert to
output format; Ghostscript status: -100.**** Unable to open the initial device,
quitting.

and the following error which is triggered by the line with the call to print():

Error in print>LocalPrint (line 311)
        pj = ghostscript( pj );

Error in print (line 237)
    LocalPrint(pj);

The code is more specifically:

if pj.GhostDriver
    pj = ghostscript( pj );

elseif strcmp( pj.Driver, 'hpgl' )
    hpgl( pj );
end

On my laptop, pj.GhostDriver is '' and pj.Driver is png.

One possible explanation is that I can launch ghostscript locally from the terminal:

$ ghostscript 
GPL Ghostscript 9.10 (2013-08-30)
Copyright (C) 2013 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
GS>

but not remotely from the terminal (since I do not have any graphical interface on the remote computer):

$ ghostscript 
GPL Ghostscript 9.05 (2012-02-08)
Copyright (C) 2010 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
GPL Ghostscript 9.05: Cannot open X display `(null)'.
**** Unable to open the initial device, quitting.

I would have thought Matlab already knew about it, since I launch Matlab on both computers by using:

matlab -nosplash -nodesktop -singleCompThread

Moreover, this problem is easily fixed as far as the terminal is concerned by adding the following line to ~/.bashrc:

export GS_DEVICE=display

Any hint at a solution?

来源：https://stackoverflow.com/questions/22764867/ghostscript-error-with-print-function-in-matlab

标签

matlab

printing

save

png

ghostscript