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From: Stefan Heinen on 22 May 2010 05:18
Hey everyone,

I'm trying to sellect some points on a graph with the ginput function.
Is there any way to select only the points on the graph. Because you can easely click wrong an than you wil have a point just near the curve and not on the graph.

Thx,

Stefan
From: John D'Errico on 22 May 2010 08:20
"Stefan Heinen" <s.g.h.heinen(a)live.com> wrote in message <ht87gd$bgg$1(a)fred.mathworks.com>...
> Hey everyone,
>
> I'm trying to sellect some points on a graph with the ginput function.
> Is there any way to select only the points on the graph. Because you can easely click wrong an than you wil have a point just near the curve and not on the graph.
>

Surely this tells you that ginput is not the correct way to do
such selection, or that you need to do something extra.

You might find selectdata handy.

http://www.mathworks.com/matlabcentral/fileexchange/13857

John
From: Stefan Heinen on 22 May 2010 09:21
thx,



but I already figured out that you could do it like this:


datacursormode on


dcm_obj = datacursormode(fig1);


for i = 1:3


pause


dcm_obj = datacursormode(fig1);


set(dcm_obj,'DisplayStyle','window');


cursor_info = getCursorInfo(dcm_obj);


text(... ,'FontSize',7)


plot(cursor_info.Position(1),cursor_info.Position(2),'*r')



end


datacursormode off



the data cursor lies always on the graph!
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