how to extract cursor data to a variable ?
显示 更早的评论
The matlab doc gives a way to manually Export Cursor Data to Workspace. Is there a function to do this automatically ? I would like to make computations on the cursor coordinates that the user drags in the plot (imshow).
采纳的回答
Kojiro Saito
2018-7-10
datacursormode and getCursorInfo will be a solution.
x = linspace(0,10,150);
y = cos(5*x);
fig = figure;
plot(x,y,'Color',[0,0.7,0.9])
title('2-D Line Plot')
xlabel('x')
ylabel('cos(5x)')
% Enable data cursor mode
datacursormode on
dcm_obj = datacursormode(fig);
% Set update function
set(dcm_obj,'UpdateFcn',@myupdatefcn)
% Wait while the user to click
disp('Click line to display a data tip, then press "Return"')
pause
% Export cursor to workspace
info_struct = getCursorInfo(dcm_obj);
if isfield(info_struct, 'Position')
disp('Clicked positioin is')
disp(info_struct.Position)
end
function output_txt = myupdatefcn(~,event_obj)
% ~ Currently not used (empty)
% event_obj Object containing event data structure
% output_txt Data cursor text
pos = get(event_obj, 'Position');
output_txt = {['x: ' num2str(pos(1))], ['y: ' num2str(pos(2))]};
end
7 个评论
paul harder
2019-5-1
thank you
Jerry
2020-4-19
How is this possible with multiple data tips? When I try it with more than one data tip the error code
'Error using dispToo many input arguments.' appears.
Heini Rasmussen
2020-5-29
@Jerry: Did you find a solution to this?
Francesco Botticella
2020-11-5
info_struct(1).DataIndex
info_struct(2).DataIndex
.......
Angie Vicente
2021-1-3
help! how i can extract two datas with this code?
Rachid Belaroussi
2021-3-4
编辑：Rachid Belaroussi
2021-3-4
tx kojiro, that help so much! I might add (tx to francesco): multiple data tips can be done by alt+left click to add a new point
Ganzorig
2025-3-12
Thanks,
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Creating, Deleting, and Querying Graphics Objects 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
