Cursor mode only for specified data

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fjnb86
fjnb86 2011-10-21
Hello everybody,
I have one figure with two plots. One of them is a scatter plot and I want activate the data cursor and only find points of this data.
I dont know how to really modify using myfunction
Maybe creating a specific handle?
Thanks
Code:
function scatterMod(varargin)
scatter(varargin{:}) %this is the data which I want to work using the data cursor
dcm = datacursormode(gcf);
set(dcm, 'updatefcn', @myfunction)
function output_txt = myfunction(obj,event_obj)
% Display the position of the data cursor
% obj Currently not used (empty)
% event_obj Handle to event object
% output_txt Data cursor text string (string or cell array of strings).
pos = get(event_obj,'Position');
output_txt = {['X: ',num2str(pos(1),4)],...
['Y: ',num2str(pos(2),4)]};
% If there is a Z-coordinate in the position, display it as well
if length(pos) > 2
output_txt{end+1} = ['Z: ',num2str(pos(3),4)];
end

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采纳的回答

Walter Roberson
Walter Roberson 2011-11-15
Try setting HitTest off on the points you do not want data cursor to work for. (I don't promise it will work, but it is worth the experiment.)
  1 个评论
fjnb86
fjnb86 2012-4-25
It was many time ago but you were right!
Until now I was doing other thinh but yours is more elegant and today (with more experience) I solved!
%code for other new users
[handlesfigure]=yourplot(x,y); %u dont want to interact with this
set(handlesfigure,'HitTest','off')

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更多回答（1 个）

fjnb86
fjnb86 2011-11-15
Data cursor has an option called Selection->"Snap to nearest data vertex" and it works well but only when you have one data represented.
If I plot more in the same figure this function catches both of them and I only want this for the scatter plot.
Ive also ridden this documentation but Im still blocked: http://blogs.mathworks.com/videos/2011/10/19/tutorial-how-to-make-a-custom-data-tip-in-matlab/#comments
thanks!

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