Re: Error in right_axis_plot.jnl

[Roelof Burger <roelof@xxxxxxxxxxxxxxxxx>]

Hi,
i've experienced the same problems discribed by Mark. I tried the suggestion to
move the aline command to after the plot/over and remove the ,on (immediate
execution mode). However, then my lines disappear altogether - all of them (the
alines).
Could this be due to other reasons, such as color maps?
thanx
roelof

Mark Verschell wrote:
> 
> My brilliant (and often annoying) office mate, Alban Lazar, has discovered
> a problem with the multiple variable plotting JNL files left_axis_plot.jnl
> and right_axis_plot.jnl. The left_axis_plot would work fine, but when he
> executed the right_axis_plot he would get TWO red lines for the second
> variable, one scaled to the right axis and one scaled to the left axis!
> After determining that he hadn't done anything TOO strange (sorry, Alban),
> I tried the demo program again (multi_variable_demo.jnl), plotting a
> modified temperature that would make the left axis scale up to include the
> range of the salt. Sure enough, two red lines.
> 
> The problem is in right_axis_plot.jnl, which has the code section:
> 
> ! draw the plot
> ppl window off
> ppl plot/over
> ppl plot/over ! needs 2 times to get aline to work - don't know why
> 
> The second ppl plot/over creates the "BAD" line. This wasn't seen in the
> demo because temp and salt have a non-overlaping range of values.
> 
> The fix is simple:
> 
> 1) remove the second ppl plot/over
> 
> 2) move the aline command:
> 
> ! set up the line specimen
> ppl aline/nouser 1,'axov_aline_xpos','axov_aline_start','axov_aline_xpos',
> 'axov_aline_end',on
> 
> to after the ppl plot/over and chenge the lines to:
> 
> ! plot the right hand line specimen
> ppl aline/nouser 1,'axov_aline_xpos','axov_aline_start','axov_aline_xpos',
> 'axov_aline_end'
> 
> (remove the ,on from the end)
> 
> Thanks for your support,
> 
>         Mark Verschell

-- 
Roelof Burger                  tel  : +27-58-303-5571
SAWB / Metsys                  fax  : +27-58-303-2352
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