Re: Only one trace appears in gnuplot

[Neil Davey]

On Tue, 29 Jun 1999, Robert D. Penny wrote:

> I have just compiled and installed octave-2.0.14 on a Redhat 6.0 system.

I have the same configuration...

> I've encountered a small glitch in plotting two traces on the same
> figure.  It appears that the problem occurs when gnuplot is only sent a small
> amount of data.
> 
> If I execute 
> 
> octave:1> a=[0:.1:5];
> octave:2> plot(a,sin(a),a,cos(a))
> 
> gnuplot only displays the sine curve, whereas

yep... I get that also, but if I do a replot as the next command both line
appear..
 
> octave:1> a=[0:.1:6];
> octave:2> plot(a,sin(a),a,cos(a))
> 
> displays both the sine and the cosine curve.

yep..

> Similarly, executing
> 
> octave:11> a=[0:.1:2];
> octave:12> plot(a,sin(a),a,cos(a),a,(sin(a)).^2)
> 
> displays 3 traces, whereas

yep...

> octave:9> a=[0:.1:1];
> octave:10> plot(a,sin(a),a,cos(a),a,(sin(a)).^2)
> 
> only displays one trace.  However, adding an explicit data point of (0,0)
> at the end

again if I issue a replot as the next command the three plots appear

> octave:15> plot(a,sin(a),a,cos(a),a,(sin(a)).^2,0,0)
> 
> then causes all three traces to display.

yep..

> Is this a known problem?  Do others see this problem?

I don't know if it is a problem, but I get exactly the same problem and I
have the same configuration.. since a replot displays the data correctly,
I think this is only a minor problem...

Neil

> I'm using 
> 
>        G N U P L O T
>         Linux version 3.7
>         patchlevel 0
>         last modified Thu Jan 14 19:34:53 BST 1999

me too...
 
> Thanks,
> 
> -Rob Penny (address@hidden) 
> 
> 
> 
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Neil Davey
Postgraduate Research Student
Radio Science Laboratory
School of Microelectronic Engineering
Griffith University, Nathan, QLD Australia 4111
Ph: 3875 5574
Mobile: 0414 662 110

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

        This world is but merely a stepping stone....





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