Selecting lines from plot

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TJ
TJ on 8 Jan 2018
Commented: Jan on 9 Jan 2018
Good day,
I have tried using Jan Simon's answer in How to use the mouse to select and identify a line on a plot
I am struggling to adapt this to a GUI I have built in GUIDE and have the following code in a callback:
handles.P(1) = line(handles.Plot1, 'XData', chunktime, 'YData', normChunk1);
handles.P(2) = line(handles.Plot1, 'XData', chunktime, 'YData', normChunk2);
handles.P(3) = line(handles.Plot1, 'XData', chunktime, 'YData', normChunk3);
The question is regarding the input arguments to LineSelected and the construction of the handles for the lines. Is handles.P(x) the correct way to create handles to the lines that belong to handles.Plot1?
function LineSelected(ObjectH, EventData, H)
set(ObjectH, 'LineWidth', 2.5);
set(H(H ~= ObjectH), 'LineWidth', 0.5);
If I am using a GUI built in GUIDE, are my input arguments for the function hObject, eventdata and handles? Then for ObjectH do I replace that with handles.P?
Cheers

Accepted Answer

Jan
Jan on 8 Jan 2018
Edited: Jan on 8 Jan 2018
E.g.:
handles.P(1) = line(handles.Plot1, 'XData', chunktime, 'YData', normChunk1);
handles.P(2) = line(handles.Plot1, 'XData', chunktime, 'YData', normChunk2);
handles.P(3) = line(handles.Plot1, 'XData', chunktime, 'YData', normChunk3);
set(handles.P, 'ButtonDownFcn', {@LineSelected, handles.P});
...
function LineSelected(ObjectH, EventData, AllLines)
set(ObjectH, 'LineWidth', 2.5);
set(AllLines(AllLines ~= ObjectH), 'LineWidth', 0.5);
end
Or maybe easier:
function LineSelected(ObjectH, EventData, AllLines)
set(AllLines, 'LineWidth', 0.5);
set(ObjectH, 'LineWidth', 2.5);
end
  5 Comments
Jan
Jan on 9 Jan 2018
@TJ: The question is not clear to me yet. The ButtonDownFcn callback does execute only, if you click on the line. Which code "goes through the set functions"? What do you want to return to the GUI? Where have you "stored the line" and how did you do this?
I assume posting the code will clarify what you are asking for. Maybe in a new thread?

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More Answers (2)

Tamir Suliman
Tamir Suliman on 8 Jan 2018
you just need to follow this part of the example
H(2) = plot(1:10, rand(1, 10), 'b');
set(H, 'ButtonDownFcn', {@LineSelected, H})
  2 Comments
Walter Roberson
Walter Roberson on 8 Jan 2018
You can store the lines you gave in LineSelected.m

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Tamir Suliman
Tamir Suliman on 8 Jan 2018
so basically your handles variables or what ever action you assign to it would be the set function

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