Paul and Ingo, could you please confirm which version of PDL you’re each running?
Best regards, Ed From: Paul Goodall<mailto:paul.thomas.good...@gmail.com> Sent: 19 October 2022 04:09 To: Ingo Schmid<mailto:ingo...@gmx.at> Cc: pdl-general@lists.sourceforge.net<mailto:pdl-general@lists.sourceforge.net> Subject: Re: [Pdl-general] PDL::Tranform issues Hi Ingo, With or without the curly braces - it's the same for me. Also - the error happens before the map stage, during the call to 't_linear'. I will write a simple Bilinear Interpolation myself, I would have just preferred to use the in-built capability in 'PDL::Transform'. --- pdl> use PDL::Transform; pdl> $im = rfits "m51.fits" Reading IMAGE data... BITPIX = -32 size = 262144 pixels Reading 1048576 bytes BSCALE = 1 && BZERO = 0 pdl> $tr = t_linear({rot=>30}); Undefined subroutine &PDL::Transform::Linear::identity called at transform.pd line 2729. pdl> $tr = t_linear(rot=>30); Undefined subroutine &PDL::Transform::Linear::identity called at transform.pd line 2729. --- cheers, Paul On 18 Oct 2022, at 10:05 am, Ingo Schmid <ingo...@gmx.at<mailto:ingo...@gmx.at>> wrote: Dear Paul, first, I think you do not need the curly { } around rot. Second, map needs $tr and $im. You can call it $tr->map($im) or $im->map($tr), as far as I know. With these changes, it works for me. use PDL; #use PDL::IO::; use PDL::Transform; use PDL::Graphics::Gnuplot; $im = rfits('/data/ingo/git/PDL/pdl-code/m51.fits'); $tr = t_linear({rot=>30}); print $Tr; $im1 = $tr->map($im); gplot {out=>'i1.png',term=>'png',},with=>'image',$im; gplot {out=>'i2.png',term=>'png',},with=>'image',$im1; Ingo On 10/18/22 07:52, Paul Goodall wrote: Hi perldl peeps, I'm trying to do something that should be really simple, but it seems I'm falling over at the first hurdle. I've replicated the error in it's simplest form from the example given in the docs as follows, and I've highlighted the offending line. ---- use PDL<https://metacpan.org/pod/PDL::Transform>; use PDL::IO::Image<https://metacpan.org/pod/PDL::Transform>; use PDL::Transform<https://metacpan.org/pod/PDL::Transform>; $im = rfits('m51.fits'); $tr = t_linear({rot=>30}); $im1 = $tr->map($tr); --- And I'm hit with this one: > Undefined subroutine &PDL::Transform::Linear::identity called at transform.pd > line 2729. I'm using PDL v2.080 on Ubuntu 20.04 (focal). This feels like it's something that has been solved a million times, but I can't seem to find the solution. Am I looking at the wrong Docs or doing something obviously silly? cheers, Paul _______________________________________________ pdl-general mailing list pdl-general@lists.sourceforge.net<mailto:pdl-general@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/pdl-general _______________________________________________ pdl-general mailing list pdl-general@lists.sourceforge.net<mailto:pdl-general@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/pdl-general
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