how can I add label to rectangle object ?

I did not go through the 'draggable' function, but I assume it allows you to interactively drag the square. I believe the following code should do the same:

pos = [1 2 5 6];
rect = rectangle('Position',pos);
set(rect,'FaceColor','none','EdgeColor','g','LineWidth',6);
axis([0 10 0 10])
rect_title(rect,'title')

Just define the following function first:

function rect_title(rect,str)
global updateflag
updateflag = false;
% Add initial title to UserData
rect.UserData.str = str;
rect.UserData.t = text(rect.Position(1)+rect.Position(3)/2,rect.Position(2)+rect.Position(4)/2,rect.UserData.str,'HorizontalAlignment','center');
% Add Callbacks
ax = rect.Parent;
f = ax.Parent;
f.WindowButtonUpFcn = @draw_rectangle;
rect.ButtonDownFcn = @draw_rectangle;
end
function draw_rectangle(src,evt)
global updateflag
if ishandle(src) && strcmp(get(src,'type'),'figure') && updateflag
    % Assign temporary data to rect
    RectData = src.UserData.RectData;
    % Move Rectangle
    Pold = RectData.rect.Position;
    P1 = RectData.Pdown.IntersectionPoint;
    P2 = evt.IntersectionPoint;
    dx = P2(1) - P1(1);
    dy = P2(2) - P1(2);
    RectData.rect.Position = Pold + [dx dy 0 0];
    % Update title
    delete(RectData.t)
    RectData.rect.UserData.t = text(RectData.rect.Position(1)+RectData.rect.Position(3)/2,RectData.rect.Position(2)+RectData.rect.Position(4)/2,RectData.rect.UserData.str,'HorizontalAlignment','center');
    updateflag = false;
elseif ishandle(src) && strcmp(get(src,'type'),'rectangle')
    updateflag = true;
    ax = src.Parent;
    f = ax.Parent;
    f.UserData.RectData.t = src.UserData.t;
    f.UserData.RectData.rect = src;
    f.UserData.RectData.Pdown = evt;
end
end

Eduard Reitmann 2018-8-6

You are welcome. I hope it solved your problem.

Sucharitha Chokkappa Gari 2020-10-8

Sir,

text(pos(1)+pos(3)/2,pos(2)+pos(4)/2,'Title','HorizontalAlignment','center')

this works for me

How do I do if I have 4 rectangles being plotted in loop and I want to name them as rect1, rect2...

请先登录，再进行评论。

how can I add label to rectangle object ?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

回答（1 个）

5 个评论
显示 3更早的评论隐藏 3更早的评论

另请参阅

类别

标签

Community Treasure Hunt

how can I add label to rectangle object ?

0 个评论 显示 -2更早的评论隐藏 -2更早的评论

回答（1 个）

5 个评论 显示 3更早的评论隐藏 3更早的评论

另请参阅

类别

标签

Community Treasure Hunt

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

5 个评论
显示 3更早的评论隐藏 3更早的评论