[daip] Re: sorry, another aips problem

[Jim Ulvestad]

I get this message a lot, and when I do, I always find that TVCHAN
is set to a negative number.  Don't quite know how it keeps
happening, but changing TVCHAN to 1 always fixes it.

ju

Eric Greisen wrote:

>Robert F Willson writes:
>
> >   Sorry, but I have another problem: when I say "tvall" to display a map on the 
> > screen, I get the message:
> > 
> > TVFIND: NO MA IMAGES ARE ON ACCORDING TO CATALOG
> > 
>
>31DEC02 is pretty old by now and I do not know quite what to suggest.
>I did fix a bug in TVALL for when the labeling is allowed to go to
>any GRCHAN.  TVALL is a proc which reads
>
>PROC TVALL; TVOFF(1234);OFFZOOM;TVON(TVCH);GROFF(1234);
>GROFF(5678);J=GRCH;GRCH=248;GRCL;GRCH=J;TVCL;TVLOD;TVWED(16)
>TVWLAB;TVFID;RETURN
>FINISH
>
>in 31DEC02.  Do you end up with an image loaded? an image visible?, a
>wedge, a wedge label?
>
>The new proc is
>
>PROC TVALL; TVOFF(1234);GROFF(1234);GROFF(5678);
>J=GRCH;GRCH=8;GRCL;GRCH=J;GRCL;TVCL;OFFZOOM;TVLOD;
>TVON(TVCH);TVWED(16);TVWLAB;TVFID; RETURN; FINISH
>
>I mostly clears the right graphics channel compared to the old one. 
>
>I really do not have a good idea - you could try doing the proc by
>hand and see where it fails or if the new one works where the old one
>fails.  I do remember this message but possibly not in the TVALL
>context.
>
>Eric Greisen
>
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