AVGPOWER
in [Matlab]
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From: Putrisia Hendra on 3 Aug 2010 23:46 hi guys.. actually i just want to ask you about AVGPOWER in Matlab.. this function tell us about average power a signal. so, if we want to use that function in GUI how we can do that? i mean what should we d first? i have some code: % compute the power spectrum, telling the FFT to use length(x) as the number of %points in the FFT, and to use the sampling frequency 256Hz. [P,f] = periodogram(x2,[],length(x2),256); %the function returns a vector of frequencies at which the FFT was computed, f, %and the power at each frequency, P. temp_1((1:15386),1)=P; temp_1((1:15386),2)=f; delta=[temp_1((1:8),1) temp_1((1:8),2)]; theta=[temp_1((9:16),1) temp_1((9:16),2)]; alpha=[temp_1((17:24),1) temp_1((17:24),2)]; beta=[temp_1((25:40),1) temp_1((25:40),2)]; delta=sortrows(delta); alpha=sortrows(alpha); beta=sortrows(beta); theta=sortrows(theta); d=avgpower(delta) set(handles.delta,'String',d) guidata(hObject,handles) avgpower is doent work here.. are there any solution bout my code?
From: Putrisia Hendra on 4 Aug 2010 00:01 "Putrisia Hendra " <putrisiazahra(a)gmail.com> wrote in message <i3anpt$ocd$1(a)fred.mathworks.com>... > hi guys.. > actually i just want to ask you about AVGPOWER in Matlab.. > this function tell us about average power a signal. > so, if we want to use that function in GUI how we can do that? i mean what should we d first? > i have some code: > > % compute the power spectrum, telling the FFT to use length(x) as the number of > %points in the FFT, and to use the sampling frequency 256Hz. > [P,f] = periodogram(x2,[],length(x2),256); > %the function returns a vector of frequencies at which the FFT was computed, f, > %and the power at each frequency, P. > > > temp_1((1:15386),1)=P; > temp_1((1:15386),2)=f; > delta=[temp_1((1:8),1) temp_1((1:8),2)]; > theta=[temp_1((9:16),1) temp_1((9:16),2)]; > alpha=[temp_1((17:24),1) temp_1((17:24),2)]; > beta=[temp_1((25:40),1) temp_1((25:40),2)]; > delta=sortrows(delta); > alpha=sortrows(alpha); > beta=sortrows(beta); > theta=sortrows(theta); > > d=avgpower(delta) > > set(handles.delta,'String',d) > guidata(hObject,handles) > > avgpower is dosnt work here.. > > are there any solution bout my code? there are the error explanation ??? Error using ==> skripsi>hitung_Callback Too many output arguments. Error in ==> skripsi>delta_CreateFcn at 252 set (hitung_Callback,avgpower(delta)); Error in ==> gui_mainfcn at 96 feval(varargin{:}); Error in ==> skripsi at 42 gui_mainfcn(gui_State, varargin{:}); ??? Error using ==> struct2handle Error while evaluating uicontrol CreateFcn ??? Error using ==> skripsi>hitung_Callback Too many output arguments. Error in ==> skripsi>delta_CreateFcn at 252 set (hitung_Callback,avgpower(delta)); Error in ==> gui_mainfcn at 96 feval(varargin{:}); Error in ==> skripsi at 42 gui_mainfcn(gui_State, varargin{:}); ??? Error using ==> struct2handle Error while evaluating uicontrol CreateFcn Help Me Plis...!
From: Steven_Lord on 4 Aug 2010 09:49 "Putrisia Hendra " <putrisiazahra(a)gmail.com> wrote in message news:i3aomn$l3o$1(a)fred.mathworks.com... > "Putrisia Hendra " <putrisiazahra(a)gmail.com> wrote in message > <i3anpt$ocd$1(a)fred.mathworks.com>... *snip* > there are the error explanation > > ??? Error using ==> skripsi>hitung_Callback > Too many output arguments. > > Error in ==> skripsi>delta_CreateFcn at 252 > set (hitung_Callback,avgpower(delta)); There are several issues here. First, this line of code does not appear in the code that you posted in your original message. If you're looking for help with debugging a piece of code, you should post the EXACT code that you're using, not "something similar". Posting "something similar" to the code about which you're asking for help rather than the ACTUAL code just tends to aggravate people. Second, the most common way to call the SET function requires an odd number of inputs; the first is the object or objects whose properties you are trying to set, and the following pairs of inputs are parameter names and the values you want to specify for those parameters. [There is another way to call SET with an even number of inputs, but let's not get into that right now.] So even if you fix the third problem that I'm going to discuss in a second, this code would not work. Third, this error message suggests that the avgpower function does not return an output argument. If avgpower is a function you've written, you need to debug it and determine why it doesn't return an output. If it's not a function you've written, you should check to make sure you're calling it correctly and if you are, contact the author of the function for help in debugging it. -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com
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