Answered

Improving fit of data to sum of cosines model

hello some findings that may interest you ... as I don't have the Curve Fitting Toolbox , this work has been done with the p...

Improving fit of data to sum of cosines model

hello some findings that may interest you ... as I don't have the Curve Fitting Toolbox , this work has been done with the p...

circa un mese ago | 1

| accepted

Answered

How do I evaluate the error for a fitted non-linear curve

hello using both experimental and fitted data you can compute R2 this way : function Rsquared = my_Rsquared_coeff(data,data...

How do I evaluate the error for a fitted non-linear curve

hello using both experimental and fitted data you can compute R2 this way : function Rsquared = my_Rsquared_coeff(data,data...

circa un mese ago | 0

Answered

How to calculate average for a multiple of time period

here your are , my friend the frequency is estimated by taking the fft of the velocity signal and getting the dominant peak. b...

How to calculate average for a multiple of time period

here your are , my friend the frequency is estimated by taking the fft of the velocity signal and getting the dominant peak. b...

circa un mese ago | 0

| accepted

Answered

How can I find where those indesirabe plots are from ?

hello maybe this ? %% Ids(Vds) %% mu=10; Cox=3.9; W=360*(10^(-9)); L=180*(10^(-6)); K=(mu*Cox)*(W/L); Vth=1; vds=0...

How can I find where those indesirabe plots are from ?

hello maybe this ? %% Ids(Vds) %% mu=10; Cox=3.9; W=360*(10^(-9)); L=180*(10^(-6)); K=(mu*Cox)*(W/L); Vth=1; vds=0...

circa un mese ago | 0

| accepted

Answered

how to extract coordinates from g code files

hello tried a few things , this is my suggestion for the time being . Not 100% sure it's the best code , maybe someone else wi...

how to extract coordinates from g code files

hello tried a few things , this is my suggestion for the time being . Not 100% sure it's the best code , maybe someone else wi...

circa un mese ago | 1

Answered

Impedance calculation using FFT from time, voltage and current battery data

hello should be possible using tfestimate function alternative (older) code : x and y are your time domain data (x = inpu...

Impedance calculation using FFT from time, voltage and current battery data

hello should be possible using tfestimate function alternative (older) code : x and y are your time domain data (x = inpu...

circa un mese ago | 0

| accepted

Answered

How can I convert an .xls spreadsheet to FFT format?

hello try this code . It will do averaged FFT (with overlap) and time / frequency spectrogram a few mods need still to be do...

How can I convert an .xls spreadsheet to FFT format?

hello try this code . It will do averaged FFT (with overlap) and time / frequency spectrogram a few mods need still to be do...

circa un mese ago | 1

| accepted

Answered

Error in using eval with num2str

hello your method works only for integers otherwise you have to round your numbers with a given number of decimals befoe it h...

Error in using eval with num2str

hello your method works only for integers otherwise you have to round your numbers with a given number of decimals befoe it h...

circa un mese ago | 0

| accepted

Answered

How to get xticklabels from xticks by merging cells?

hello here you are my friend : Xticks = [1,2,3]; tmp = num2str(Xticks); Xtickslabels{1} = tmp;

How to get xticklabels from xticks by merging cells?

hello here you are my friend : Xticks = [1,2,3]; tmp = num2str(Xticks); Xtickslabels{1} = tmp;

circa un mese ago | 0

Answered

Divide and plot signal parts

finally, decided to give it a try .... your neg data in red (added for fun the positive segments as well in green) %% dum...

Divide and plot signal parts

finally, decided to give it a try .... your neg data in red (added for fun the positive segments as well in green) %% dum...

circa un mese ago | 0

| accepted

Answered

Audios doesn't looping right

hello I a not sure what you mean by "download " audio files I interpreted your post as simply looping over a folder and stor...

Audios doesn't looping right

hello I a not sure what you mean by "download " audio files I interpreted your post as simply looping over a folder and stor...

circa un mese ago | 0

Answered

Trying to identify certain peaks in a plot

hello I have reworked your code check this : %% Plot of Undamaged Specimen % na=readmatrix('Default Dataset (4).csv');...

Trying to identify certain peaks in a plot

hello I have reworked your code check this : %% Plot of Undamaged Specimen % na=readmatrix('Default Dataset (4).csv');...

circa un mese ago | 1

| accepted

Answered

changing frequency of an existing audio

hello the question is not 100 % clear to me if you want to play the same signal to a different pitch , you can simply do ne...

changing frequency of an existing audio

hello the question is not 100 % clear to me if you want to play the same signal to a different pitch , you can simply do ne...

circa 2 mesi ago | 0

| accepted

Answered

fourier Transformation of the signal from a motor

hello this is my suggestion for your application (the fft is done one multiple data chuncks of NFFT length with overlapping , ...

fourier Transformation of the signal from a motor

hello this is my suggestion for your application (the fft is done one multiple data chuncks of NFFT length with overlapping , ...

circa 2 mesi ago | 0

| accepted

Answered

How to cut data after defined number of peaks?

hello Hannah here you are - blue start / end points defined by your preferred peakseek function NB : the blue points are not a...

How to cut data after defined number of peaks?

hello Hannah here you are - blue start / end points defined by your preferred peakseek function NB : the blue points are not a...

3 mesi ago | 0

| accepted

Answered

Question about using the "fit_mutiple_gaussians" from File Exchange

here the code a bit simplified but the results with a 4 gaussian model does not really fit well. I think this come mostly from...

Question about using the "fit_mutiple_gaussians" from File Exchange

here the code a bit simplified but the results with a 4 gaussian model does not really fit well. I think this come mostly from...

3 mesi ago | 0

| accepted

Answered

How can I find the angle (from the vertical) between two points?

hello jeremy small typo in your code the angle is given by : atand((x1-x2)/(y1-y2)) and not atand((x1-x2)-(y1-y2)) so...

How can I find the angle (from the vertical) between two points?

hello jeremy small typo in your code the angle is given by : atand((x1-x2)/(y1-y2)) and not atand((x1-x2)-(y1-y2)) so...

3 mesi ago | 0

Answered

filtering data inside a table and storing multiple tables in one big table

hello you can probably make the all process much simpler with only one main for loop (iteration over the files) and one if con...

filtering data inside a table and storing multiple tables in one big table

hello you can probably make the all process much simpler with only one main for loop (iteration over the files) and one if con...

3 mesi ago | 0

| accepted

Answered

getting the index after comparing two logicals

hello see code below : a = logical([1 0 0 0 1]) b = logical([0 0 0 0 1]) c = a & b col_c_is_one = find(c) gives the fol...

getting the index after comparing two logicals

hello see code below : a = logical([1 0 0 0 1]) b = logical([0 0 0 0 1]) c = a & b col_c_is_one = find(c) gives the fol...

3 mesi ago | 0

Answered

How to plot these types of plot?

hello see my demo below. Change the profile and data scaling accorsing to your needs hope it helps figure(3) plot : code ...

How to plot these types of plot?

hello see my demo below. Change the profile and data scaling accorsing to your needs hope it helps figure(3) plot : code ...

3 mesi ago | 0

| accepted

Answered

Interpolating(or averaging) Time series curves

hello in your case it's fairly simple as both blue and red curves have exactly the same y values (but for different x) so yo...

Interpolating(or averaging) Time series curves

hello in your case it's fairly simple as both blue and red curves have exactly the same y values (but for different x) so yo...

3 mesi ago | 1

| accepted

Answered

signal processing of real time signal

hello again !! FYI this is simple code for time domain acceleration to velocity / displacement integration (data file attached)...

signal processing of real time signal

hello again !! FYI this is simple code for time domain acceleration to velocity / displacement integration (data file attached)...

3 mesi ago | 0

| accepted

Answered

Assign custom interval to the color map z axis of a surf plot

hello try my little demo the colorbar is "frozen" so that ticks / tickslabels do not vary acccording to data range. In other...

Assign custom interval to the color map z axis of a surf plot

hello try my little demo the colorbar is "frozen" so that ticks / tickslabels do not vary acccording to data range. In other...

3 mesi ago | 0

Answered

How to filter breath noise in audio？

hello i opted for a strategy based on the spectrogram content. I noticed that the "breathing" sections are characterized by a ...

How to filter breath noise in audio？

hello i opted for a strategy based on the spectrogram content. I noticed that the "breathing" sections are characterized by a ...

3 mesi ago | 1

| accepted

Answered

How to plot it?

hello simply replace the negative values of b by NaN so the vector size remains the same a=[1;2;3;4;5]; b= [-10;10;0;20;-20]...

How to plot it?

hello simply replace the negative values of b by NaN so the vector size remains the same a=[1;2;3;4;5]; b= [-10;10;0;20;-20]...

3 mesi ago | 1

Answered

Count impulses into sequence of impulses and segments of sequences of impulses from signal

hello again so this is my attempt... not maybe the shortest and most efficienct code , but seems to do what I wanted so we ca...

Count impulses into sequence of impulses and segments of sequences of impulses from signal

hello again so this is my attempt... not maybe the shortest and most efficienct code , but seems to do what I wanted so we ca...

3 mesi ago | 1

| accepted

Answered

How I could solve the for loop problem?

hello tried to fix quite a large amount of bugs still don't understand why you need a second for loop as obviously it could ...

How I could solve the for loop problem?

hello tried to fix quite a large amount of bugs still don't understand why you need a second for loop as obviously it could ...

3 mesi ago | 0

| accepted

Answered

How to create structs with text data

hello check my demo code below : clc clearvars mylines = readlines('exampledata.txt'); % [m,n] = size(mylines); % gr...

How to create structs with text data

hello check my demo code below : clc clearvars mylines = readlines('exampledata.txt'); % [m,n] = size(mylines); % gr...

3 mesi ago | 0

Answered

I need to read a specific column from 30 files in a folder (read the same column from each of them) and plot each column as a line. How can I go about it?

hello Agustina see code below : % use the structure returned by DIR: P = cd; % working directory S = dir(fullfile(P, 'Powe...

I need to read a specific column from 30 files in a folder (read the same column from each of them) and plot each column as a line. How can I go about it?

hello Agustina see code below : % use the structure returned by DIR: P = cd; % working directory S = dir(fullfile(P, 'Powe...

3 mesi ago | 1

| accepted

Answered

Create a better plot

hello maybe you want to make an animated line demo : %% create animatedline object / handle figure h1 = animatedline; ...

Create a better plot

hello maybe you want to make an animated line demo : %% create animatedline object / handle figure h1 = animatedline; ...

3 mesi ago | 0

| accepted