How can I print multiple texts that change using a for statement?

Question

종수 허 2022-5-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1719265-how-can-i-print-multiple-texts-that-change-using-a-for-statement

评论： Voss 2022-5-15

采纳的回答： Voss

for i = 1:100

J = robot.jacob0(th);

Jp = J(1:3,1:3);

dq = inv(Jp)*[0.01;0;0];

th_new = th;

th_new(1:3) = th_new(1:3) + dq';

robot.plot(th_new)

th = th_new;

getframe(gcf)

x1 = robot.fkine(th_new);

x2=x1.t(1,1);

y1 = robot.fkine(th_new);

y2=y1.t(2,1);

z1 = robot.fkine(th_new);

z2=z1.t(3,1);

text(3,1.5,3,{'X :' num2str(x2)}); % x2 keeps changing, but the previous text is not erased, so it looks overlapped when printed

text(3,1.5,1.5,{'Y :' num2str(y2)}); % The same goes for the text below.

text(3,1.5,0,{'Z :' num2str(z2)})

joint1angle = dq(1,1) * 180/pi;

joint2angle = dq(2,1) * 180/pi;

joint3angle = dq(3,1) * 180/pi;

text(-1,3,3,{'joink 1 angle :' num2str(joint1angle)});

text(-1,3,1.5,{'joink 2 angle :' num2str(joint1angle)});

text(-1,3,0,{'joink 3 angle :' num2str(joint1angle)});

clear

end

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Answer 1

Voss 2022-5-14

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1719265-how-can-i-print-multiple-texts-that-change-using-a-for-statement#answer_964005

在 MATLAB Online 中打开

Create the text(s) you need once, before the loop, and then update them inside the loop.

% t: 1-by-6 array of text objects
% (Positions don't change, set them now, and
% initialize with empty String)
t = [ ...
    text(3,1.5,3,'') ...
    text(3,1.5,1.5,'') ...
    text(3,1.5,0,'') ...
    text(-1,3,3,'') ... 
    text(-1,3,1.5,'') ...
    text(-1,3,0,'') ...
    ];
    
for i = 1:100
    
    % ...
    % your code to calculate x2, y2, z2, joint1angle, etc.
    % ...
    
    % update the Strings of t (adjust the format as necessary, e.g.,
    % put them back as cell arrays if you want multi-line text):
    set(t(1),'String',sprintf('X : %.2f',x2));
    set(t(2),'String',sprintf('Y : %.2f',y2));
    set(t(3),'String',sprintf('Z : %.2f',z2));
    set(t(4),'String',sprintf('joint 1 angle : %.2f',joint1angle));
    set(t(5),'String',sprintf('joint 2 angle : %.2f',joint2angle));
    set(t(6),'String',sprintf('joint 3 angle : %.2f',joint3angle));
    
end