[Pkg-octave-devel] Bug#474257: octave-epstk: does not plot the whole line

[Thomas Weber]

Hi Stefan, 

I'm forwarding below a bug report against epstk. The problem is that the
plot doesn't go to the right hand side of the plot window. 

The problem already appears when only plotting a smaller right part of
the vector, ie f(3500:4096) and b(3500:4096).

Thanks
	Thomas

Am Freitag, den 04.04.2008, 17:30 +0200 schrieb Francesco Potorti`:
> Package: octave-epstk
> Version: 2.2-8
> Severity: normal
> 
> In a case, given below, eplot does not produce the whole line.  It
> appers to be related with x-axis log autoscaling, but I am not sure.  In
> this particular case, the line should go from [0.024,0] at the top left
> to [100,-30.6] at the bottom right, but the rightmost part of the curve
> is not plotted.
> 
> The code to reproduce the problem is at the end.

> ===File ~/math/workarea/bug.m===============================
> 1;
> function B = bodel (f)
>   pole=1;			# pole [Hz]
>   sr=200;			# sampling rate [Hz]
>   sig=1./(1-j*f/pole);		# frequency response of one pole
>   B=real(sig.*conj(sig));	# compute power
>   al=1./(1-j*(f-sr)/pole);	# one positive windowful of aliasing
>   B+=real(al.*conj(al));	# add aliasing power
>   B=10*log10(B);
> endfunction
> 
> eglobpar;			# get access to global parameters
> eopen("spectrum.eps");
> ePlotAreaHeight=70;		# plot height [mm]
> ePlotAreaWidth=70;		# plot width [mm]
> eXAxisSouthScaleType=2;		# log scale
> f=[1:4096]*100/4096;
> b=bodel(f);
> eplot(f,b)
> eclose				# print the graph on file
> ============================================================