How to use the mouse to select and identify a line on a plot
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Hi,
I have an analysis that I am performing repeatedly. There are two multi-channel data sources. These sources have different and possibly varying identification numbers. It is important that data source A and B are correctly identified.
I would like to be able to include a user interactive check where a channel from source A and B are plotted together. The user is then asked for instance to pick or highlight the line from data set A. This is then used to identify A and B. If necessary a swap of data sets is then performed prior to launching into the full analysis.
I am new to GUI programming and using callbacks etc in Matlab and would appreciate any comments or suggestions on this.
Regards
Andrew Sims
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回答(2 个)
Jan
2013-7-26
编辑:Jan
2013-7-26
You can use the ButtonDownFcn of the line objects:
function smallTest
axes('NextPlot', 'add')
H(1) = plot(1:10, rand(1, 10), 'r');
H(2) = plot(1:10, rand(1, 10), 'b');
set(H, 'ButtonDownFcn', {@LineSelected, H})
function LineSelected(ObjectH, EventData, H)
set(ObjectH, 'LineWidth', 2.5);
set(H(H ~= ObjectH), 'LineWidth', 0.5);
12 个评论
Claus Andersson
2022-2-24
Jan, thanks for the very helpful solution above - is there a way to 'inline' this LineWidth change in the 'set' call to avoid having the function LineSelected.
I would like to have the figure stay interactive, even after the function has stopped running.
Jan
2022-2-24
I do not understand, what you are asking for.
You need to write the code of a callback into a function. Where do you want to "inline" it instead?
The figure does stay interactive. Which function stopped running?
Claus Andersson
2022-2-24
Hi Jan. My mistake. It works perfectly and the callback continues to work, I had a typo.
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