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[Octave-bug-tracker] [bug #56120] Quiver scale argument has no effect wh
From: |
Rik |
Subject: |
[Octave-bug-tracker] [bug #56120] Quiver scale argument has no effect when u, v arguments are scalars |
Date: |
Thu, 11 Apr 2019 12:30:17 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko |
Update of bug #56120 (project octave):
Status: None => Confirmed
Release: 4.4.1 => 5.1.0
Operating System: Microsoft Windows => Any
Summary: Quiver scale argument has no effect with constant
vector field => Quiver scale argument has no effect when u,v arguments are
scalars
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Follow-up Comment #1:
Confirmed. Attached is a slightly different script that shows the problem is
the presentation of the u,v arguments as scalars, rather than as vectors or
matrices. Incidentally, Matlab does not even accept the scalar input form.
close all
range = [-5:.5:5];
[xx yy] = meshgrid(range);
u = 0.4 * ones (size (xx));
v = u;
figure(1)
quiver(xx, yy, u, v, .9)
axis tight
grid on
figure(2)
quiver(xx, yy, u, v, .5)
axis tight
grid on
%% Should be identical to figure 2, but instead is unscaled and identical
%% to figure 1 because 0.9 is the default scaling
figure(3)
quiver(xx, yy, 0.4, 0.4, .5)
axis tight
grid on
(file #46748)
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Additional Item Attachment:
File name: tst_quivsz.m Size:0 KB
<https://savannah.gnu.org/file/tst_quivsz.m?file_id=46748>
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