Hi Arjen,
I am sure that your assessment as to the two
possible causes for the failure is
correct. Given that I deleted all the plplot
files in /usr/local except those I loaded into
/usr/local/plplot, it is now close to impossible
for me to reproduce the conditions responsible
for the failure. I had been trying to get the
plplot-5.9.10 version to work, and I suspect my
application was accessing some of those files
which I had failed to remove or overwrite. In
any case, it is a great relief to have things working now.
Just to let you know, most of the graphics
software I am using here I wrote in the early
1980's, almost 35 years ago, while at Los Alamos
National Laboratory, where I utilized what was
called the Common Graphics System (CGS). These
graphics allow me to visualize results from a
large 3D spherical geometry finite element
program called TERRA used for modeling the
dynamics of planetary mantles. Plplot has enabled
me, with little additional effort, to continue to
utilize these CGS-based graphics after CGS was
retired about 15 years ago. I want to express my
earnest thanks to you for helping maintain and improve Plplot.
John
At 07:25 AM 1/20/2015, Arjen Markus wrote:
Hi John,
I am glad you were able to solve it. I am not
entirely sure which step in the device selection
process failed (there are two: get the device
information and load the library that implements
it). One of the two must have been working on an
incomplete directory and by properly installing
all the stuff it has been solved. Might still be
worth looking into at some point J.
Regards,
Arjen
From: John Baumgardner [mailto:jrbaumgard...@cox.net]
Sent: Tuesday, January 20, 2015 4:20 PM
To: Arjen Markus; John Baumgardner
Cc: plplot-general@lists.sourceforge.net
Subject: RE: [Plplot-general] plwidth fails to
link under Cygwin against plplot5.9.10 libraries
Hi Arjen,
I took the step of placing the bin, include,
and lib folders in a directory named
/usr/local/plplot and I removed the plplot
files everywhere else in /usr/local. I think
it was this cleanup that fixed the
problem. The program now runs beautifully with
the line 'call plsdev(wingcc)'. Thanks so much for your help!
Kind regards,
John
At 12:06 AM 1/20/2015, Arjen Markus wrote:
Hi John,
I have seen this type of behaviour under MinGW.
I still have to figure why this is happening there.
What happens if you leave out the call to plsdev
and instead use the command-line option dev
wingcc? I assume you use the routine
plparseopts like in all examples that does the trick for me.
Regards,
Arjen
From: John Baumgardner [ mailto:jrbaumgard...@cox.net]
Sent: Monday, January 19, 2015 6:53 PM
To: Arjen Markus; Alan W. Irwin; John Baumgardner
Cc:
<mailto:plplot-general@lists.sourceforge.net>plplot-general@lists.sourceforge.net
Subject: RE: [Plplot-general] plwidth fails to
link under Cygwin against plplot5.9.10 libraries
Hi Alan and Arjen,
Thanks for that piece of information about
the f95 implementation not requiring the array
dimensions. With that awareness, I was able
quickly to modify the f77 code to compile correctly.
However, I am now having difficulties when I
attempt to execute. My executable is unable to
find the device drivers. Here is the message I get:
*** PLPLOT ERROR, ABORTING OPERATION ***
plInitDispatchTable: Could not open drivers directory, aborting operation
Requested device wingcc not available
Plotting Options:
Enter device number or keyword:
At the top of my main program, as implied by
this output, I have the line call plsdev('wingcc').
I copied the plplot dll and drivers
directories into the directory where I am
trying to execute, hoping that might resolve
the problem. But it did not. Any suggestions as to what I am missing?
Thanks,
John
At 01:44 AM 1/19/2015, Arjen Markus wrote:
Hi John,
> -----Original Message-----
> From: Alan W. Irwin
[<mailto:ir...@beluga.phys.uvic.ca>
<mailto:ir...@beluga.phys.uvic.ca>mailto:ir...@beluga.phys.uvic.ca]
> Sent: Sunday, January 18, 2015 2:49 AM
> To: John Baumgardner
> Cc:
<mailto:plplot-general@lists.sourceforge.net>plplot-general@lists.sourceforge.net
> Subject: Re: [Plplot-general] plwidth fails
to link under Cygwin against plplot5.9.10
> libraries
>
> However, the good news is I found what I
needed (circle.f and how you built it) to
> figure out this problem which turns out not to be specific to Cygwin.
>
> > $ compile.sh
> > circle.f:26.72:
> >
> > call plline(n101,xx,yy)
> >
> > 1
> > Error: There is no specific subroutine for the generic 'plline' at (1)
>
This is a typical message relating to the
available interfaces for plline. The thing is
that with Fortran 95 and beyond you can define a
single interface name to be applied to multiple
implementations. The compiler looks at the
actual argument list and decides to use the
implementation that matches that list (by number
of arguments and the type, kind and rank of
each). If it can not find any matching
implementation, it will respond with a message like the above.
For the Fortran 95 bindings we have used the
features provided by that standard as much as
possible. One is that arrays ?know? their size.
So the routine plline queries the arrays xx and
yy for their size and there is no need to pass
the size explicitly. That method is actually rather error-prone.
If you want to pass a section of the array only, you can use:
Call plline( xx(1:10), yy(1:10) )
For instance.
> I verified that issue. To solve it, I simply used the redacted form of
> subroutine/function call with the redundant
dimension information dropped, i.e.,
>
> call plline(xx,yy)
>
> Note, it is quite a while since we have used
the f77 interface so my original advice to
> you was incomplete about converting over to
f95. I should have also added to the
> "use plplot" advice that since we dropped
f77, our f95 capabilities and API have
> evolved and, for example, we are now taking advantage of certain Fortran 95
> capabilities like knowing the redundant array
dimensions. So you have to use the
> redacted form (like above with redundant
dimension information dropped) of all calls.
>
> When in doubt about exactly what the redacted
form is, look at files in examples/f95/
> for working examples of all the calls to the PLplot Fortran binding API.
>
Regards,
Arjen
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