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<p style="font-family: arial; background-color: rgb(255, 255, 255);" class="">Dear all,</p>
<p style="font-family: arial; background-color: rgb(255, 255, 255);" class=""><br class="">
</p>
<p style="font-family: arial; background-color: rgb(255, 255, 255);" class="">I have tried out the McStas 2.6 release on the <a href="https://releases.ubuntu.com/20.04/" class="">fresh Ubuntu 20.04 release</a>, and my findings are these:</p>
<ul style="font-family: arial; background-color: rgb(255, 255, 255);" class="">
<li class="">Generally, the release works as expected - all of the python tools seem to function well.</li><li class="">For the legacy perl tools we have the issue that the OS-provided PDL no longer comes with a PGPLOT plotting-bridge, which affects mcplot.pl and mcgui.pl:
<pre class="">mcstas@mcstas-virtual-machine:~$ mcgui.pl
Can't locate PDL/Graphics/PGPLOT.pm in @INC (you may need to install the PDL::Graphics::PGPLOT module)
(@INC contains: /usr/share/mcstas/2.6/tools/Perl/perl/modules /usr/share/mcstas/2.6/tools/Perl/perl /etc/perl
/usr/local/lib/x86_64-linux-gnu/perl/5.30.0 /usr/local/share/perl/5.30.0 /usr/lib/x86_64-linux-gnu/perl5/5.30
/usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl
/usr/lib/x86_64-linux-gnu/perl-base) at /usr/share/mcstas/2.6/tools/Perl/perl/mcplotlib.pl line 23, <data class=""> line 207.
BEGIN failed--compilation aborted at /usr/share/mcstas/2.6/tools/Perl/perl/mcplotlib.pl line 23, <data class=""> line 207.
Compilation failed in require at /usr/bin/mcgui.pl line 2181, <data class=""> line 207.
</data></data></data></pre>
</li><li class="">Of course the recommendation is to simply move to the Python tools, but if you insist to stay with perl, please do a local CPAN-based PDL installation like this:
<pre class="">sudo cpan install PDL
</pre>
</li><li class="">Since a few releases, the default PGPLOT implementation on Ubuntu changed to Giza. Giza seems to now be getting better, see the <a href="http://www.mcstas.org/news/2018.html" class="">April 30th 2018</a> hint if you want the legacy PGPLOT instead.</li></ul>
<p style="background-color: rgb(255, 255, 255);" class=""><span style="font-family: arial;" class="">A new minor release 2.6.1 is on the way, implementing a few bugfixes, see our <a href="https://github.com/McStasMcXtrace/McCode/issues?q=is%3Aissue+label%3A%22McStas+2.6%22+" class="">GitHub
issue tracker</a> </span><font face="arial" class=""> for more information.</font><span style="font-family: arial; font-size: medium;" class=""> </span></p>
<div class=""><br class="">
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<p style="font-family: arial; background-color: rgb(255, 255, 255);" class="">Best regards,<br class="">
Peter Willendrup</p>
<div class="">
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;">
<br class="">
Peter Kjær Willendrup<br class="">
Forskningsingeniør, Specialkonsulent<br class="">
Næstformand for DTU Fysik LSU<br class="">
<br class="">
DTU Physics<br class="">
<br class="">
</div>
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+45 2125 4612</span><br style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
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<span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;" class=""><a href="mailto:pkwi@fysik.dtu.dk" class="">pkwi@fysik.dtu.dk</a></span>
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