[Pkg-octave-devel] Bug#474257: octave-epstk: does not plot the whole line
Francesco Potorti`
Potorti at isti.cnr.it
Fri Apr 4 15:30:50 UTC 2008
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.
-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'testing-proposed-updates')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.22-3-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=it_IT at euro (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/bash
Versions of packages octave-epstk depends on:
ii octave2.1 1:2.1.73-17 GNU Octave language for numerical
ii octave3.0 3.0.0-1 GNU Octave language for numerical
octave-epstk recommends no packages.
-- no debconf information
===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
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