Re: [ferret_users] How does the noaxis qualifier work?

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Ryo,
What should happen is that axes are always plotted only on the first 
plot, never on an overlay plot. So, once you've said /noaxes you should 
not get axes on an /overlay plot. That is what happens on a 1D plot. For 
these commands, you never get any axes.

  yes? set data levitus_climatology
  yes? plot/k=1/y=0/noaxis temp
  yes? plot/over/k=1/y=10 temp

So what you're seeing with the axes appearing on the second FILL command 
is a bug. I would just leave the axes in effect on the first plot.

Another option is to use the trick with overlapping a second viewport on 
the first. Here's a message with an example that shows how to do that.

http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2003/msg00444.html

Ryo Furue wrote:
> Hi Ferret users,
>
> I'm wondering if this is what's expected with noaxis:
>
>   set data levitus_climatology
>   let allmissing = if (salt gt 1e8) then 1
>   fill/k=1/noaxis/nolabel/nokey temp !! Plot temperature.
>   fill/k=1/nolabel/ov allmissing     !! Plot axes only.
>
> I meant to omit axes in the plotting of temperature
> and to add axes later.  As you can see, however,
> the fourth line plots only the frame and the numerical
> labels on the x-axis.
>
> I thought that plotting axes last is the cleanest way
> when you overlay many plots.  (It seems that "normal"
> overlays plot axes and numeric labels over and over again.)
> Also, in one of my plots, an overlay actually mangled
> the x-axis by overlaying different numeric labels than
> preceding plotting commands plotted.  This was the actual
> motivation for me to explore the possibility of plotting
> axes separately.  But I haven't been able to reproduce this
> oddity in a simple case, and I'll leave it at that for now.
>
> Regards,
> Ryo
>   

--

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Ansley Manke, NOAA/PMEL   ansley.b.manke@xxxxxxxx
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744