changing the plot in GUI manually (only part of the plot)

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alex
alex on 7 Nov 2012
I am trying to implement things from this link-
in a bit more complex gui.. I have a curve plotted, and using a peakfinder function I find all the maxima in the plot,and mark them with an X (using another plot function) but then I want the user to have the ability to correct the location of the maxima if they are wrong, or to erase some X if they are unnecessary.
I can’t understand what should I change or add to make it work to drag only a certain X each step.
in this code it isn't a gui but I still have the same problem
my code-
function main
global data_file
x=0:0.1:100
data_file=sin(x)*5+(rand(100*10+1,1)-0.5)
starting_sample= 1;
sampling_rate=1;
len = length(data_file);
f=figure(NumberTitle,'off’,'color,'w’,…
Menubar,'none’);
[picks1,locs1]= findpeaks(data_file(starting_sample:sampling_rate:len),MINPEAKDISTANCE,10);
a=axes(xlim,[0 100], ylim,[-5 5]);
plot(1:sampling_rate:len,data_file(starting_sample:sampling_rate:len));
hold on
p=plot(locs1,picks1,x',linewidth,2,color,'r’,'ButtonDownFcn,@start_drag1);
hold off
set(f,WindowButtonUpFcn,@stop_drag1)
function start_drag1(varargin)
set(f,WindowButtonMotionFcn,@draging)
end
function draging(varargin)
pt= get(a,currentpoint)
set(p,XData,pt(1)*[1 1])
end
function stop_drag1(varargin)
set(f,WindowButtonMotionFcn,)
end
end

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