Miroslav Balda

Last seen: alrededor de 2 años hace | Con actividad desde 2005

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SINIDE - Parameter identification of a sine-wave from a measured signal
Frequency, amplitude, phase shift and mean value of the best sinus fit to a sampled signal.

casi 9 años hace | 4 descargas |

Respondida
Importing data from text file
You have preprocessed the problem rather far. Store 'the_file' in the text file, say 'data.txt' and then use the function txt2ma...

más de 9 años hace | 0

Pregunta

RecursionLimit reached without applying recursion calls.
I have got the message that the recurence limit is reached, when I wanted to run big program I am just debugging. There was also...

más de 9 años hace | 1 respuesta | 0

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To fit power law
If you plot the given vectors by the statement semilogy(A(:,1),A(:,2),':o'),you observe that the pure power function does not f...

casi 10 años hace | 0

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Importing file with text and numbers
The prwvious answer gives a possible solution, however the function fgetl is rather slow. Maybe, the alternative way is in appli...

casi 11 años hace | 0

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Linear regression on a semi-log scale
The following code solves your problem: % James.m % JAMES Linear regression on a semilog scale %%%%%%%%%%%%%%%%%%%%%...

casi 11 años hace | 0

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LMFnlsq2
Solution of one or more nonlinear equations in the least squares sense.

casi 11 años hace | 6 descargas |

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imaginary value from solution nonlinier least square
Let us reformulate the problem: data = (q + 1./r).*exp(-r*q).*(0.6/(p(1)*r.^2)), where q = sqrt(p(2)); The prob...

alrededor de 11 años hace | 0

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diagonal matrix with ones
There is even simpler solutionof your problem: Anew = diag(diag(A))\tril(A)

alrededor de 11 años hace | 0

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conversion of array to vector
The first command is useless. Suppose inpIamage is a matrix, the character of Mean depends of your function mean2. Should functi...

alrededor de 11 años hace | 0

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diagonal matrix with ones
Your last comment explained how to construct the resulting matrix. You see, how important it is to precisely formulate your ques...

alrededor de 11 años hace | 0

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how to create start point for multistart
Your question is not very clear, however, the following solution may help you: oristart = [lb1,lb2,lb3,r,s1,b1,s2,b2]; n...

alrededor de 11 años hace | 0

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fitting function with many parameters (fminsearch)
This may happen, if there are order differences among values of unknown parametres. Let's assume those parameters are gathered i...

alrededor de 11 años hace | 0

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curve fitting with more then two independent variables
If the regression function is in right MATLAB notation f(x) = (a+b*x.*z)./(1+c*x) % see dots between x and z and before...

alrededor de 11 años hace | 0

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how can I remove similar numbers that FOLLOW ?
This code works: y=x([x(2:end),0]~=x(1:end));

alrededor de 11 años hace | 0

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sum function and add using loop
Let your data be in vector data(1:31536001). Try this code: k = 0; K = 0; x = zeros(1,8760); while k<8760, k = ...

alrededor de 11 años hace | 0

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Import text file with header
The simplest way to read such data is in using the function txt2mat fro the File Exchange: www.mathworks.com/matlabc...

alrededor de 11 años hace | 0

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Simple matlab doubt in a coding
See |http://www.mathworks.com/help/matlab/matlab_prog/anonymous-functions.html|

alrededor de 11 años hace | 0

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saving plots and reopening them
Figures stored in *.ppg files can't be opend in MATLAB. If you plan to reopen figures in MATLAB, Y should save them in *.fig fil...

alrededor de 11 años hace | 0

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How can I solve a system in complex variables ?
The structure of the MATLAB code without an application of the Symbolic Toolbox should be as follows: 1. All constant parame...

alrededor de 11 años hace | 0

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How to determine peaks in a large set of data
Try the function extr.m from |www.mathworks.com/matlabcentral/fileexchange/10272| If vector |a| contains all samples of a...

alrededor de 11 años hace | 0

Pregunta

Building legends with extraordinary properties
Legend command denotes all plotted items in a serial order. Questions: *1.* Is there a way how to skip denoting some plotted i...

alrededor de 11 años hace | 1 respuesta | 0

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How can I solve a system in complex variables ?
Maybe that you can get a solution in a simpler way just in MATLAB without using symbolic approach. Your equation is complex depe...

alrededor de 11 años hace | 0

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how to load a txt data
The general program for processing files of presented structure follows: % IONS.m Answers: Mohamad, 3.2.2013, 12:14...

alrededor de 11 años hace | 0

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how to load a txt data
Your code doesn't create or print data in the required format. The following code does it. The input data are in file IONS.txt: ...

alrededor de 11 años hace | 0

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Frequency of combined waveform
It is not clear what you want to find. However, the next code finds all parameters of the combined wave, i.e. amplitudes, freque...

alrededor de 11 años hace | 0

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creating the same format for the dates
The following code fulfils the requirement, should the format of input dates be dd/mm/yyyy or mm/yyyy: dates= { '1...

alrededor de 11 años hace | 0

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How can I improve peak detection in fast fourier tranform?
You may find the function sinfapm.m in the File Exchange: www.mathworks.com/matlabcentral/fileexchange/19902

alrededor de 11 años hace | 0

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GETK
Wait for and identify a pressed key

casi 12 años hace | 1 descarga |