Answered

find a set of data in an array

idx = find(A~=0); B = A(idx); idx and B have the same size and order. I believe this is what you are looking for?

find a set of data in an array

idx = find(A~=0); B = A(idx); idx and B have the same size and order. I believe this is what you are looking for?

20 days ago | 0

Answered

How can I select rows in an array based on the values in the first column of another array?

new_array = second_array(first_array,:)

How can I select rows in an array based on the values in the first column of another array?

new_array = second_array(first_array,:)

21 days ago | 1

| accepted

Answered

adding different number of columns to specific row

Try using the table join() method: https://www.mathworks.com/help/matlab/ref/table.join.html Example: M_obs = readtable('book...

adding different number of columns to specific row

Try using the table join() method: https://www.mathworks.com/help/matlab/ref/table.join.html Example: M_obs = readtable('book...

21 days ago | 0

Answered

How to display all values of an iteration?

for i = 1:100 xc = (x1 + x2)/2; if f(x1)*f(xc)<0 x2 = xc; else x1 = xc; end disp(['x1...

How to display all values of an iteration?

for i = 1:100 xc = (x1 + x2)/2; if f(x1)*f(xc)<0 x2 = xc; else x1 = xc; end disp(['x1...

21 days ago | 0

| accepted

Answered

How to replace a rectangle with another rectangle?

I tried this, it worked for me: r = rectangle('FaceColor', [0.2 0.2 0.7]); r.FaceColor = [0.2 0.2 0.2];

How to replace a rectangle with another rectangle?

I tried this, it worked for me: r = rectangle('FaceColor', [0.2 0.2 0.7]); r.FaceColor = [0.2 0.2 0.2];

21 days ago | 0

Answered

Changing array size of user input data

myCell = {}; k = 0; for i = 1:5:number k = k + 1; myCell{k,1} = i:min(i+4,number); end writecell(myCell,fullfile(...

Changing array size of user input data

myCell = {}; k = 0; for i = 1:5:number k = k + 1; myCell{k,1} = i:min(i+4,number); end writecell(myCell,fullfile(...

21 days ago | 0

| accepted

Answered

Problem with function handle for Basis function in fitrgp

load(fullfile(matlabroot,'examples','stats','gprdata2.mat')) In this case, your x is n x 1; hfcn returns H, which has size n ...

Problem with function handle for Basis function in fitrgp

load(fullfile(matlabroot,'examples','stats','gprdata2.mat')) In this case, your x is n x 1; hfcn returns H, which has size n ...

23 days ago | 0

| accepted

Answered

Errors using function and fsolve

% *Set universal constants:* global surr sink sigma sigma = 5.67e-8; % Stefan-Boltzmann constant (in W/m^2/K^4) % % *S...

Errors using function and fsolve

% *Set universal constants:* global surr sink sigma sigma = 5.67e-8; % Stefan-Boltzmann constant (in W/m^2/K^4) % % *S...

27 days ago | 0

Answered

Linear regression outputs (regstat function)

The first one is for the constant coefficient (aka intercept term). I believe you have only one predictor x, then your model is...

Linear regression outputs (regstat function)

The first one is for the constant coefficient (aka intercept term). I believe you have only one predictor x, then your model is...

27 days ago | 0

| accepted

Answered

T-wave on ECG

If I understood right what you are asking, you need to find the peaks for P,Q,R,S, and T using findpeaks(). https://www.mathwo...

T-wave on ECG

If I understood right what you are asking, you need to find the peaks for P,Q,R,S, and T using findpeaks(). https://www.mathwo...

1 month ago | 0

Answered

making dataset 3D data function

Let's assume your variables are named as 'input01', 'input02', ... 'input48'. my3Ddata = []; myMeanData = []; varnames = wh...

making dataset 3D data function

Let's assume your variables are named as 'input01', 'input02', ... 'input48'. my3Ddata = []; myMeanData = []; varnames = wh...

1 month ago | 0

Answered

How can I save a image from imshow into a cell array ?

I don't think you need the imshow(). imshow() is only used to show the image, and it returns an image object, which is not norma...

How can I save a image from imshow into a cell array ?

I don't think you need the imshow(). imshow() is only used to show the image, and it returns an image object, which is not norma...

1 month ago | 0

| accepted

Answered

Piecewise function of y

It's a bit hard to understand the issue here. Please let me know if this is not what you are looking for: plot(C2(20:90), heigh...

Piecewise function of y

It's a bit hard to understand the issue here. Please let me know if this is not what you are looking for: plot(C2(20:90), heigh...

1 month ago | 0

| accepted

Answered

Replacing NaN with blanks in a matrix

I believe you are looking for fillmissing() or rmmissing(): https://www.mathworks.com/help/matlab/ref/fillmissing.html https:/...

Replacing NaN with blanks in a matrix

I believe you are looking for fillmissing() or rmmissing(): https://www.mathworks.com/help/matlab/ref/fillmissing.html https:/...

1 month ago | 0

Answered

linear regression of time series with time index

If you have a fixed equation like the one provided, I believe you are looking for parameter estimation methods to find beta_0, b...

linear regression of time series with time index

If you have a fixed equation like the one provided, I believe you are looking for parameter estimation methods to find beta_0, b...

1 month ago | 0

Answered

please explain the solution

K = round(Tuq'*eye(5)*Tuq,2); M = [ m 0 0 ; 0 m 0 ; 0 0 I ]; eq = det(K*k-w1*M); s = solve(eq,w1); will prevent sym() to con...

please explain the solution

K = round(Tuq'*eye(5)*Tuq,2); M = [ m 0 0 ; 0 m 0 ; 0 0 I ]; eq = det(K*k-w1*M); s = solve(eq,w1); will prevent sym() to con...

2 months ago | 0

| accepted

Answered

FFT filter on voice file help please

There are multiple ways you can filter these data. You can use bandpass, high or low pass filters, or any other specific filters...

FFT filter on voice file help please

There are multiple ways you can filter these data. You can use bandpass, high or low pass filters, or any other specific filters...

2 months ago | 0

Answered

Fourier Transform in Simulink

Change the Samples per frame property on the Sine Wave block: https://www.mathworks.com/help/dsp/ug/transform-time-domain-d...

Fourier Transform in Simulink

Change the Samples per frame property on the Sine Wave block: https://www.mathworks.com/help/dsp/ug/transform-time-domain-d...

2 months ago | 0

Answered

Digital signal processing LINEAR AND CIRCULAR CONVOLUTION length-N sequences error

x = [2+3j 3-1j -1+2j 3j 2+4j]; https://www.mathworks.com/help/matlab/ref/j.html

Digital signal processing LINEAR AND CIRCULAR CONVOLUTION length-N sequences error

x = [2+3j 3-1j -1+2j 3j 2+4j]; https://www.mathworks.com/help/matlab/ref/j.html

2 months ago | 0

| accepted

Answered

How to detect variations in data?

Depends on how complex of a solution you are looking for. There are algorithms for change point detection that you can try. htt...

How to detect variations in data?

Depends on how complex of a solution you are looking for. There are algorithms for change point detection that you can try. htt...

2 months ago | 1

Answered

Which Right Eigenvector to report?

I assume you meant 'right' as opposed to 'left' eigen vectors. [V,D] = eig(A); % to get left eigenvectors, [V,D,W] = eig(A), he...

Which Right Eigenvector to report?

I assume you meant 'right' as opposed to 'left' eigen vectors. [V,D] = eig(A); % to get left eigenvectors, [V,D,W] = eig(A), he...

2 months ago | 0

Answered

Creating a table for the "For-loop command" results:

Even though there are many more efficient ways to do this, this is a simple addition to your code: clear clc n=input('Enter t...

Creating a table for the "For-loop command" results:

Even though there are many more efficient ways to do this, this is a simple addition to your code: clear clc n=input('Enter t...

2 months ago | 0

Answered

How to extract sub-matrices from a big matrix?

% to find the matched date and store the that day along with the following 5 days (120 hours) in another matrix. for n = 1:siz...

How to extract sub-matrices from a big matrix?

% to find the matched date and store the that day along with the following 5 days (120 hours) in another matrix. for n = 1:siz...

2 months ago | 1

| accepted

Answered

How to change nonzero values to 1 within a table?

tempTable = table2array(myTable); tempTable(tempTable~=0)=1; myTable = array2table(tempTable);

How to change nonzero values to 1 within a table?

tempTable = table2array(myTable); tempTable(tempTable~=0)=1; myTable = array2table(tempTable);

2 months ago | 0

| accepted

Answered

Replace NaN's in a table - I need some help

T2.col1(ismissing(T2.col1)) = "Behezad"; T2.col2(ismissing(T2.col2)) = "RAD"; T2.col3(ismissing(T2.col3)) = "MORD";

Replace NaN's in a table - I need some help

T2.col1(ismissing(T2.col1)) = "Behezad"; T2.col2(ismissing(T2.col2)) = "RAD"; T2.col3(ismissing(T2.col3)) = "MORD";

2 months ago | 1

Answered

Adding values of Columns in a matrix to create another matrix (for loop)

dim=size(E_min,2); % dim = 25 fun = @(E) A*exp(-E/kT); Np = []; nyi = []; for i = 1:dim Np(i)=integral...

Adding values of Columns in a matrix to create another matrix (for loop)

dim=size(E_min,2); % dim = 25 fun = @(E) A*exp(-E/kT); Np = []; nyi = []; for i = 1:dim Np(i)=integral...

2 months ago | 1

| accepted

Answered

How to mark a specific point on CDF graph?

Assuming you have 4 cdf arrays, you can find the x-values as: cdf1ind = find(cdf1>=.80,1,'first'); x1 = x(cdf1ind); cdf2ind = ...

How to mark a specific point on CDF graph?

Assuming you have 4 cdf arrays, you can find the x-values as: cdf1ind = find(cdf1>=.80,1,'first'); x1 = x(cdf1ind); cdf2ind = ...

2 months ago | 0

| accepted

Answered

How to write a code to estimate parity of numbers in a sequence?

bnumbers = [5 0 8 3 9 2 7 6 1 4 8 1 0 5 9 7 2 6 3 4]'; bresponse = [0 0 1 0 0 0 0 0 0 2 0 2 2 0 0 0 0 0 0 0]'; bbinary = ...

How to write a code to estimate parity of numbers in a sequence?

bnumbers = [5 0 8 3 9 2 7 6 1 4 8 1 0 5 9 7 2 6 3 4]'; bresponse = [0 0 1 0 0 0 0 0 0 2 0 2 2 0 0 0 0 0 0 0]'; bbinary = ...

2 months ago | 0

| accepted

Answered

Signal Decomposition for a mixed signal

t=0:0.00001:0.3; x1=(exp(-3*t)).*(0.2*sin(2*pi*400*t)); x2=1.2+(exp(-1.5*t)).*(1.1*sin(2*pi*40*t+pi/6)); x3=(exp(-5*t)).*(0.8...

Signal Decomposition for a mixed signal

t=0:0.00001:0.3; x1=(exp(-3*t)).*(0.2*sin(2*pi*400*t)); x2=1.2+(exp(-1.5*t)).*(1.1*sin(2*pi*40*t+pi/6)); x3=(exp(-5*t)).*(0.8...

2 months ago | 0

| accepted

Answered

Hi I am having a hard time using the getfield. It says there is an error.

lat = getfield(latStruct,latField{1});

Hi I am having a hard time using the getfield. It says there is an error.

lat = getfield(latStruct,latField{1});

2 months ago | 0