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[Octave-bug-tracker] [bug #43527] Bug / compatibility to plotting any wa
From: |
Rick T |
Subject: |
[Octave-bug-tracker] [bug #43527] Bug / compatibility to plotting any way to work around |
Date: |
Tue, 04 Nov 2014 14:35:30 +0000 |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:33.0) Gecko/20100101 Firefox/33.0 |
URL:
<http://savannah.gnu.org/bugs/?43527>
Summary: Bug / compatibility to plotting any way to work
around
Project: GNU Octave
Submitted by: ratulloch
Submitted on: Tue 04 Nov 2014 02:35:29 PM GMT
Category: Plotting
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Assigned to: None
Originator Name: Rick T
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 3.8.1
Operating System: GNU/Linux
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Details:
Bug / compatibility problem . I'm using octave 3.8.1 on ubuntu 14.04 64 bit
the code below works in matlab but I get an error when run with octave 3.8.1
does anyone know a workaround?
The error that comes back is
error: octave_base_value::array_value(): wrong type argument 'complex matrix'
error: called from:
which is an error in the set(handle, 'YData', f(x, b)) % set new y-data in
plot handle line
Code below:
% // Parameter and x-range
m=3.73;
a=480;
r=1;
fs=44100;
x=linspace(0,2*pi,fs)';
% // function to compute y for given x and parameter b
f = @(x, b) m^3*cos(sqrt(a*r*x)).^(0.77)/r +
m^3*cos(sqrt(b*r*x)).^(0.77)/r-20;
% // first plot out of loop (to get plot handle)
figure;
b = 300;
y = f(x, b);
handle = plot(x, y);
xlabel('x') % // only set once
ylabel('y=f(x,b)') % // only set once
title(['b = ' num2str(b)]);
pause(0.1);
% // animate for b = 301 to 86
for b = 301:486 %// Change
set(handle, 'YData', f(x, b)) % set new y-data in plot handle
pause(0.1); %// update plot
title(['b = ' num2str(b)]); %// update title
end
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