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%QPLOT Plot joint angles
%
% QPLOT(Q) is a convenience function to plot joint angle trajectories (Mx6) for
% a 6-axis robot, where each row represents one time step.
%
% The first three joints are shown as solid lines, the last three joints (wrist)
% are shown as dashed lines. A legend is also displayed.
%
% QPLOT(T, Q) as above but displays the joint angle trajectory versus time T (Mx1).
%
% See also JTRAJ, PLOT.
% Copyright (C) 1993-2011, by Peter I. Corke
%
% This file is part of The Robotics Toolbox for Matlab (RTB).
%
% RTB is free software: you can redistribute it and/or modify
% it under the terms of the GNU Lesser General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% RTB is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU Lesser General Public License for more details.
%
% You should have received a copy of the GNU Leser General Public License
% along with RTB. If not, see <http://www.gnu.org/licenses/>.
function qplot(t, q)
if nargin < 2
q = t;
t = (1:numrows(q))';
end
clf
hold on
plot(t, q(:,1:3))
plot(t, q(:,4:6), '--')
grid on
xlabel('time')
ylabel('q')
legend('q1', 'q2', 'q3', 'q4', 'q5', 'q6');
hold off
xlim([t(1), t(end)]);