#426 psrplot preprocessing does not work with overlay

[Mike Keith]

This may be known as the manual doesn't explicitly give any examples where this is used, but if you use the -O option to overlay plots you can't then use per-plot exec commands (or -j ":0:" type syntax) to do preprocessing. This means, for example, you can't have sub-integrations plotted with the tscrunched profile plotted beneith.

For example, in the folowing style file I would expect that the "flux" plot would be the tscrunched average of the subints, but in fact it just plots the first sub-int. If you do not use the -O option it behaves as expected, but produces two plots which is not so useful.

set=pub

plot flux
above:c=unset
below:l=unset
y:view=0.1:0.25
chan=I
exec tscrunch

plot time
y:view=0.25:0.9
x:lab= 
x:opt=BCTS

[Willem van Straten]

When the -O option is used, each Plot is wrapped by a MultiData instance; however, the MultiData class was not forwarding access to the wrapped Plot preprocessor ... this has been fixed in [master d705ccd10]

[Mike Keith]

I can confirm that this fix works! Thanks Willem.