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: 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]
> 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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