Answered

Find Fundamental Frequency to know if it´s a Man or a woman or children

Your project is not possible to complete using any known science. Suppose for example that group A has a mean score on somethin...

Find Fundamental Frequency to know if it´s a Man or a woman or children

Your project is not possible to complete using any known science. Suppose for example that group A has a mean score on somethin...

ungefär en timme ago | 0

Answered

Why are the results different when calculating a 10 x 3 matrix and a 1 x 3 matrix?

XYZ_rwd21t = [1.30937778204061e-14,-13.8617246105272,22.6275000000000; XYZ_rwt212t(i, 2) = XYZ_rwd21t(1, 2); Okay, so ...

Why are the results different when calculating a 10 x 3 matrix and a 1 x 3 matrix?

XYZ_rwd21t = [1.30937778204061e-14,-13.8617246105272,22.6275000000000; XYZ_rwt212t(i, 2) = XYZ_rwd21t(1, 2); Okay, so ...

ungefär 3 timmar ago | 0

Answered

fminsearch for ligistic fit

f2 = @(p)f(p,x); That relies on x existing in your workspace. If you are going to do that you might as well assume it on the...

fminsearch for ligistic fit

f2 = @(p)f(p,x); That relies on x existing in your workspace. If you are going to do that you might as well assume it on the...

ungefär 13 timmar ago | 0

Answered

Adding elements of a vector in matlab

fliplr( cumsum( fliplr(a) ) )

Adding elements of a vector in matlab

fliplr( cumsum( fliplr(a) ) )

ungefär 18 timmar ago | 0

| accepted

Answered

Integration from 0 to a variable.

integral() is for numeric integration, but solve() is for symbolic work. fun2=@(x)((s-x).*((b/a).*((x/a).^(b-1)))/(1+((x/a).^...

Integration from 0 to a variable.

integral() is for numeric integration, but solve() is for symbolic work. fun2=@(x)((s-x).*((b/a).*((x/a).^(b-1)))/(1+((x/a).^...

ungefär 18 timmar ago | 0

Answered

fprintf to plot error

See https://www.mathworks.com/matlabcentral/answers/534868-make-matrix-with-loop#answer_439778 for a general code outline that y...

fprintf to plot error

See https://www.mathworks.com/matlabcentral/answers/534868-make-matrix-with-loop#answer_439778 for a general code outline that y...

ungefär 19 timmar ago | 0

Answered

Divide .wav file into equal segments

The below will split all .wav in a given directory into 3 second buffers. A directory named after the file will be created insid...

Divide .wav file into equal segments

The below will split all .wav in a given directory into 3 second buffers. A directory named after the file will be created insid...

ungefär 20 timmar ago | 1

| accepted

Answered

How can I make a non uniform quantization of an image?

If you have the Communications toolbox you can use quantiz() https://www.mathworks.com/help/comm/ref/quantiz.html You can also...

How can I make a non uniform quantization of an image?

If you have the Communications toolbox you can use quantiz() https://www.mathworks.com/help/comm/ref/quantiz.html You can also...

en dag ago | 0

Answered

Matlab License for students

MATLAB Online is not free; you need to have an active account of one of several kinds. If Harvard has a Total Academic Headcoun...

Matlab License for students

MATLAB Online is not free; you need to have an active account of one of several kinds. If Harvard has a Total Academic Headcoun...

en dag ago | 0

Answered

Y axis in scientific form

If you are referring to the scale factor that sometimes get put up near the top of the Y axes, then the answer is that there is ...

Y axis in scientific form

If you are referring to the scale factor that sometimes get put up near the top of the Y axes, then the answer is that there is ...

en dag ago | 0

Answered

solve vs. fsolve

Sometimes plotting and finding intervals by eye is not productive. In the general case, theory says that it is impossible to c...

solve vs. fsolve

Sometimes plotting and finding intervals by eye is not productive. In the general case, theory says that it is impossible to c...

2 dagar ago | 0

Answered

Make matrix with loop

In the general case: xvals = [list of x values, does not have to be regularly spaced or even sorted]; numx = length(xvals); y...

Make matrix with loop

In the general case: xvals = [list of x values, does not have to be regularly spaced or even sorted]; numx = length(xvals); y...

2 dagar ago | 0

Answered

Plot Not showing all values

The max value of col2 is only about 20, but the maximum value of col1 is 992008 Near 210 the entries go like 21.4239 21.5239 ...

Plot Not showing all values

The max value of col2 is only about 20, but the maximum value of col1 is 992008 Near 210 the entries go like 21.4239 21.5239 ...

2 dagar ago | 0

Answered

Multi Threads operation SERIAL PORT in Parallel

That cannot be done with asynchronous serial ports such as RS232 and USB. In order to synchronize reception of data, you need to...

Multi Threads operation SERIAL PORT in Parallel

That cannot be done with asynchronous serial ports such as RS232 and USB. In order to synchronize reception of data, you need to...

2 dagar ago | 0

Answered

how to insert value of array to other array

horzcat(). [list of values] is also horzcat()

how to insert value of array to other array

horzcat(). [list of values] is also horzcat()

2 dagar ago | 0

| accepted

Answered

What am I missing in this code I am trying to find roots of a System of Equation?

x=x+transpose(eps) That should be subtraction rather than addition.

What am I missing in this code I am trying to find roots of a System of Equation?

x=x+transpose(eps) That should be subtraction rather than addition.

2 dagar ago | 1

| accepted

Answered

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

inv(j)*f is going to return a column vector. Your original X0 is a row vector. Since R2016b, if you subtract a row vector and a ...

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

inv(j)*f is going to return a column vector. Your original X0 is a row vector. Since R2016b, if you subtract a row vector and a ...

2 dagar ago | 1

Answered

Function that calls another function in LiveScript

Yes, provided that you are using a MATLAB release new enough to support functions in Live Scripts (which you are.) Note that th...

Function that calls another function in LiveScript

Yes, provided that you are using a MATLAB release new enough to support functions in Live Scripts (which you are.) Note that th...

2 dagar ago | 0

Answered

cumulatives of the dynamical system

You currently have a first order differential equation, diff(D,t) == x(t). When you use it with ode45 you would be using a funct...

cumulatives of the dynamical system

You currently have a first order differential equation, diff(D,t) == x(t). When you use it with ode45 you would be using a funct...

2 dagar ago | 0

Answered

Efficiently ways to solve for multiple for loops, of which the indices are the parameters of a function

You can do at least part of it in vectorized form. The following deliberately creates random numbers in the same order as if yo...

Efficiently ways to solve for multiple for loops, of which the indices are the parameters of a function

You can do at least part of it in vectorized form. The following deliberately creates random numbers in the same order as if yo...

3 dagar ago | 0

Answered

How do I define an empty table of unknown size?

Sorry, variables that do not exist do not have any datatype. As you add variables to the table, the datatype associated with t...

How do I define an empty table of unknown size?

Sorry, variables that do not exist do not have any datatype. As you add variables to the table, the datatype associated with t...

3 dagar ago | 0

Answered

upper case need help

str=char(mod(double(lower(str))-97+shift,26)+97);

upper case need help

str=char(mod(double(lower(str))-97+shift,26)+97);

3 dagar ago | 0

| accepted

Answered

Saving and loading matrices with vpa entries with save and load commands is extremely slow

You are correct, this can happen. The slowdown is inside the symbolic engine, when it is asked to convert into a character repre...

Saving and loading matrices with vpa entries with save and load commands is extremely slow

You are correct, this can happen. The slowdown is inside the symbolic engine, when it is asked to convert into a character repre...

3 dagar ago | 0

Answered

How to extract the events which have more than 3 consecutive rows

r=3; how many repeats mask = idx3.' == 2; %row starts = strfind([false mask], [0 ones(1,r)]; stops = strfind([mask, ...

How to extract the events which have more than 3 consecutive rows

r=3; how many repeats mask = idx3.' == 2; %row starts = strfind([false mask], [0 ones(1,r)]; stops = strfind([mask, ...

3 dagar ago | 1

| accepted

Answered

Error detected but matlab did not specify the type of error. pls help out

m25 = Mb.*Nb(1-(0.5.*(c4(i)+c4(i+1))))-((1-(0.5.*(c1(i)+c1(i+1)))).*beta1.*(x2(i)+h2.*m12)+(1-c2(i)+c2(i+1)).*beta2.*(x3(i)+h2...

Error detected but matlab did not specify the type of error. pls help out

m25 = Mb.*Nb(1-(0.5.*(c4(i)+c4(i+1))))-((1-(0.5.*(c1(i)+c1(i+1)))).*beta1.*(x2(i)+h2.*m12)+(1-c2(i)+c2(i+1)).*beta2.*(x3(i)+h2...

3 dagar ago | 0

Answered

about random number and matrix

R1=a*[0:n-1]; R2=b*[0:n-1]; R2=rand(1, 1, 100000)+R2.'; % add rand to every element in R2 del=R1-R2 ; % "row vector-column ...

about random number and matrix

R1=a*[0:n-1]; R2=b*[0:n-1]; R2=rand(1, 1, 100000)+R2.'; % add rand to every element in R2 del=R1-R2 ; % "row vector-column ...

3 dagar ago | 0

Answered

Question about hard coding error

Suppose that you are required to build a function f(x,y), and you happen know it will be called with y = 19, but you write the c...

Question about hard coding error

Suppose that you are required to build a function f(x,y), and you happen know it will be called with y = 19, but you write the c...

3 dagar ago | 0

Answered

subset the plot for the subset of x range

See isbetween() or use find(date_vector < last_date_to_plot, 1, 'last') in order to find the end of the group. In the special c...

subset the plot for the subset of x range

See isbetween() or use find(date_vector < last_date_to_plot, 1, 'last') in order to find the end of the group. In the special c...

3 dagar ago | 0

Answered

How to read the name of all output argument in function?

In order to do this, you need to use dbstack('-completenames') to find out the name of the file that you were called from and th...

How to read the name of all output argument in function?

In order to do this, you need to use dbstack('-completenames') to find out the name of the file that you were called from and th...

3 dagar ago | 0

Answered

function or functions of a single variable

fplot('-exp(-x)+x.^2-2*x+2',[0 1]) As far as fplot() is concerned, e is just another variable, and not the base of the natural ...

function or functions of a single variable

fplot('-exp(-x)+x.^2-2*x+2',[0 1]) As far as fplot() is concerned, e is just another variable, and not the base of the natural ...

3 dagar ago | 1