Synchronising data tip location on three plots

Question

Matt 2016-10-19

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/308055-synchronising-data-tip-location-on-three-plots

编辑： ali amini 2023-3-14

Hi all,

I have a GUI with three axes plots. When the user uses the data tip on one graph, I want it to appear on the other two, in the same place. When one is moved, I want the others to follow. How could I do this?

I am trying to set the position of a data tip on a graph programatically, but struggling.

fig = figure;
z = peaks;
plot(z(:,30:35))
dcm_obj = datacursormode(fig);
set(dcm_obj,'DisplayStyle','datatip',...
'SnapToDataVertex','off','Enable','on')
disp('Click line to display a data tip, then press Return.')
% Wait while the user does this.
pause
c_info = getCursorInfo(dcm_obj);
% Make selected point move
c_info.Position = [2,2] % set position

How would I set the data cursors position?

Is there a better way to make data tips appear on the other two plots in my GUI, and synchronise their location?

I have found linkprop function but not sure how to use it to be honest.

Thanks,

Matt

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Matt 2016-10-24

Hi, Does anyone have any more thoughts on this? I am struggling to implement this! Thanks in advance, Matt.

Matt 2016-10-24

I have found this but I am unsure where to begin to adapt it for my GUI.

I would like the crosshairs and x and y coordinates though...

http://uk.mathworks.com/matlabcentral/fileexchange/1038-plot-crosshairs

I have also found this, and it works very well, but you cannot drag the data tips with the mouse, and there is not a vertical crosshair that would span my three subplots

http://uk.mathworks.com/matlabcentral/answers/1308-cursor-line

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Answer 1

Walter Roberson 2016-10-19

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/308055-synchronising-data-tip-location-on-three-plots#answer_239735

在 MATLAB Online 中打开

It is possible to move the cursor... but I have not figured out how to control where it goes.

dcm_obj = datacursormode(fig);

then

here = dcm_obj.CurrentCursor.Position
dcm_obj.CurrentCursor.moveTo([-10,200])
there = dcm_obj.CurrentCursor.Position

I have not figured out how the argument such as [-10,200] relates to where the cursor ends up. It does seem repeatable, but I have not figured out the coordinate system.

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Matt 2016-10-19

编辑：Matt 2016-10-19

在 MATLAB Online 中打开

Thanks, that works. I thought it placed the cursor at the nearest data point but it doesn't seem to - odd.

fig = figure;
z = peaks;
plot(z(:,30:35))
dcm_obj = datacursormode(fig)
disp('Place the data cursor on graph and press enter')
pause
here = dcm_obj.CurrentCursor.Position
dcm_obj.CurrentCursor.moveTo([10,-3.7])
there = dcm_obj.CurrentCursor.Position