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Answered

How to concatenate a 3D cell array along the 3rd dimension?

Try this: CellArray3 = cat(3, CellArray1, CellArray2);

How to concatenate a 3D cell array along the 3rd dimension?

Try this: CellArray3 = cat(3, CellArray1, CellArray2);

28 minutos ago | 0

Answered

how to solve this complex equation in matlab?

Try this: syms theta gama Eqn = exp(pi/4*i)*(5+15i)+exp(i*theta)*(25+5i) == 40+exp(i*gama)*(-10+20i); [theta,gama] = vpasol...

how to solve this complex equation in matlab?

Try this: syms theta gama Eqn = exp(pi/4*i)*(5+15i)+exp(i*theta)*(25+5i) == 40+exp(i*gama)*(-10+20i); [theta,gama] = vpasol...

alrededor de 12 horas ago | 0

Answered

removing all rows with duplicate information in two columns

Try this: a=[1 2 3 4 5; 1 3 4 5 6; 1 2 3 5 5]; [~,~,idx] = unique(a(:,[1 5]),'rows'); tally = accumarray(idx,(1:numel(idx))....

removing all rows with duplicate information in two columns

Try this: a=[1 2 3 4 5; 1 3 4 5 6; 1 2 3 5 5]; [~,~,idx] = unique(a(:,[1 5]),'rows'); tally = accumarray(idx,(1:numel(idx))....

alrededor de 13 horas ago | 0

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Answered

Genetic algorithm plot diagram display

It is generally necessary to write your own code to save specific aspects of the ga output. It may be best to adapt the code ...

Genetic algorithm plot diagram display

It is generally necessary to write your own code to save specific aspects of the ga output. It may be best to adapt the code ...

alrededor de 16 horas ago | 0

Answered

How to delete a whole table in the matlab?

tablename = [];

How to delete a whole table in the matlab?

tablename = [];

alrededor de 16 horas ago | 1

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Answered

How can I separate the arrays when making a table?

Try this: n = 5; A = rand(n,1); B = rand(n,5); T = array2table([A, B]) That should do what you want.

How can I separate the arrays when making a table?

Try this: n = 5; A = rand(n,1); B = rand(n,5); T = array2table([A, B]) That should do what you want.

alrededor de 17 horas ago | 1

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Answered

how to combine date and time

In theory at least, datetime should be able to do this seamlessly using the timeofday function for the seconds. In practice, it...

how to combine date and time

In theory at least, datetime should be able to do this seamlessly using the timeofday function for the seconds. In practice, it...

alrededor de 22 horas ago | 0

Answered

What am I doing wrong? Matrix operators

If you want to raaise the elements of a matrix to a power, use element-wise exponentiation with the dot operator: .^ and see: Ar...

What am I doing wrong? Matrix operators

If you want to raaise the elements of a matrix to a power, use element-wise exponentiation with the dot operator: .^ and see: Ar...

1 día ago | 0

Answered

I can't plot a function I created with respect for time

You need to code it as an anonymous function. See Anonymous Functions for details. Specifically: x = @(t) X.*(exp(-Zeta.*...

I can't plot a function I created with respect for time

You need to code it as an anonymous function. See Anonymous Functions for details. Specifically: x = @(t) X.*(exp(-Zeta.*...

1 día ago | 0

Answered

Error when solving system of equations with ode45 in MATLAB R2019b

The system contains only two derivatives, and . It appears that ‘u’ and ‘z’ are either functions that need to be evaluated, or...

Error when solving system of equations with ode45 in MATLAB R2019b

The system contains only two derivatives, and . It appears that ‘u’ and ‘z’ are either functions that need to be evaluated, or...

1 día ago | 0

Answered

How to plot a function that relies on another function?

Since ‘A’ is a function, it must be evaluated in order to use its results. Try this: A = @(y) y*2; X = @(y) A(y)+10; f...

How to plot a function that relies on another function?

Since ‘A’ is a function, it must be evaluated in order to use its results. Try this: A = @(y) y*2; X = @(y) A(y)+10; f...

1 día ago | 0

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Answered

How to make this signal linear

If you want to eliminate the low-frequency parabolic(?) trend, the easiest way is to use a digital filter: signal_2 = load('si...

How to make this signal linear

If you want to eliminate the low-frequency parabolic(?) trend, the easiest way is to use a digital filter: signal_2 = load('si...

3 días ago | 0

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Answered

I'm trying to understand your tables command bugs

Both of these work for me: A = randi([0 20],5, 5); Atable1 = array2table(A, 'RowNames',{'a' 'b' 'c' 'd' 'e'},'VariableNames',...

I'm trying to understand your tables command bugs

Both of these work for me: A = randi([0 20],5, 5); Atable1 = array2table(A, 'RowNames',{'a' 'b' 'c' 'd' 'e'},'VariableNames',...

3 días ago | 0

Answered

Designing IIR Butterworth filter (pass band)

Yes. Just define the order as 5. There are different design functions in the Signal Processing Toolbox (butter that I have a...

Designing IIR Butterworth filter (pass band)

Yes. Just define the order as 5. There are different design functions in the Signal Processing Toolbox (butter that I have a...

4 días ago | 0

Answered

Play 2 wav files after each other

Use the playblocking function to get them to play the way you want them. [y1, Fs1] = audioread('file1.wav'); %this file i...

Play 2 wav files after each other

Use the playblocking function to get them to play the way you want them. [y1, Fs1] = audioread('file1.wav'); %this file i...

4 días ago | 1

Answered

I have a function which is ranged from 0 microseconds to 50 microseconds. I just want to plot its exact copies from 0to50 microsecond,50 to 100microseconds,100 to 150 and so on

Try this: Ts=1/200e6; t=Ts:Ts:0.00005; y=[ones(1,2000) zeros(1,8000)]; x=sin(1256e6*t + 2198e10*t.^2); z=x.^y; NR = ...

I have a function which is ranged from 0 microseconds to 50 microseconds. I just want to plot its exact copies from 0to50 microsecond,50 to 100microseconds,100 to 150 and so on

Try this: Ts=1/200e6; t=Ts:Ts:0.00005; y=[ones(1,2000) zeros(1,8000)]; x=sin(1256e6*t + 2198e10*t.^2); z=x.^y; NR = ...

4 días ago | 0

Answered

How to condense a plot with a shorter x-axis?

Divide the x-axis vector by max(x), assuming ‘x’ is the x-axis vector. That will re-scale it without losing any information.

How to condense a plot with a shorter x-axis?

Divide the x-axis vector by max(x), assuming ‘x’ is the x-axis vector. That will re-scale it without losing any information.

4 días ago | 0

Answered

How to avoid a for loop in functions?

Use ‘logical indexing’ and anonymous functions to eliminate the for loop and the if block: PsolWB1 = @(press) (973.-(70400./(1...

How to avoid a for loop in functions?

Use ‘logical indexing’ and anonymous functions to eliminate the for loop and the if block: PsolWB1 = @(press) (973.-(70400./(1...

5 días ago | 0

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Answered

fsolve for non linear equation

One problem is that you called fsolve inside the function. That is not appropriate. The other is that you use global variables...

fsolve for non linear equation

One problem is that you called fsolve inside the function. That is not appropriate. The other is that you use global variables...

5 días ago | 0

Answered

power law fit to find exponent

I would do this (no Toolboxes required): x = linspace(0, 5, 50); % Create Data y = x.^pi ...

power law fit to find exponent

I would do this (no Toolboxes required): x = linspace(0, 5, 50); % Create Data y = x.^pi ...

5 días ago | 0

Answered

Definite integral without symbolic variables

Create ‘fun’ as an anonymous function, then use the integral function: fun = @(z) (G1 + G2 - 2*cos(k*L1/2) * G0) .* sin(k*(L2/...

Definite integral without symbolic variables

Create ‘fun’ as an anonymous function, then use the integral function: fun = @(z) (G1 + G2 - 2*cos(k*L1/2) * G0) .* sin(k*(L2/...

5 días ago | 0

Answered

kinetic energy of the wind (u and v vectors)

Apparently, ‘h’, ‘u’, and ‘v’ are vectors of the same dimensions. One approach is to code the function as an anonymous functi...

kinetic energy of the wind (u and v vectors)

Apparently, ‘h’, ‘u’, and ‘v’ are vectors of the same dimensions. One approach is to code the function as an anonymous functi...

5 días ago | 0

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Answered

how to plot euler formula in matlab?

The plot function plots lines between points. You have only one point, so if you change the plot call to: y = exp(100*i*pi) ...

how to plot euler formula in matlab?

The plot function plots lines between points. You have only one point, so if you change the plot call to: y = exp(100*i*pi) ...

5 días ago | 0

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Answered

Please help me understand the use of dot operator

The dot operator, used with multiplication, division, and exponentiation, creates element-wise oiperations. See Array vs. Matri...

Please help me understand the use of dot operator

The dot operator, used with multiplication, division, and exponentiation, creates element-wise oiperations. See Array vs. Matri...

5 días ago | 1

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Answered

How to sort the rows of an array according to another vector?

Try this: D=[1 1 0 1 0 1; 4 6 7 8 9 9; 1 1 1 2 3 4]; b=[2 44 0]; [bb,idx] = sort(b,'descend'); Out = D(idx,:) producing: ...

How to sort the rows of an array according to another vector?

Try this: D=[1 1 0 1 0 1; 4 6 7 8 9 9; 1 1 1 2 3 4]; b=[2 44 0]; [bb,idx] = sort(b,'descend'); Out = D(idx,:) producing: ...

6 días ago | 0

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Answered

How to change the values in a matrix

One approach: Before = [ 1 9 9 9 3 8 9 9 9 4 8 9 9 9 ...

How to change the values in a matrix

One approach: Before = [ 1 9 9 9 3 8 9 9 9 4 8 9 9 9 ...

6 días ago | 0

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Answered

Inverse of algebraic expression in Matlab

Possibly: rfcn = @(E) fsolve(@(r) 1-1/2*((1+r).*log2(1+r)+(1-r).*log2(1-r)) - E, 10); % Anonymous Function: r(E) N = 200;...

Inverse of algebraic expression in Matlab

Possibly: rfcn = @(E) fsolve(@(r) 1-1/2*((1+r).*log2(1+r)+(1-r).*log2(1-r)) - E, 10); % Anonymous Function: r(E) N = 200;...

6 días ago | 0

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Answered

Designing an Arbitrary FIR Filter

This is probably as close as you can get: Frequency = [100 125 160 200 250 315 400 500 630 800 1000 1250 1600 200...

Designing an Arbitrary FIR Filter

This is probably as close as you can get: Frequency = [100 125 160 200 250 315 400 500 630 800 1000 1250 1600 200...

6 días ago | 1

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Answered

Plot the Intensity and phase of variation of electric field.

The Fourier transform is easy enough to calculate and plot: t = dlmread('t_spectrum_11480.txt','',1,0); E = dlmread('y_spectr...

Plot the Intensity and phase of variation of electric field.

The Fourier transform is easy enough to calculate and plot: t = dlmread('t_spectrum_11480.txt','',1,0); E = dlmread('y_spectr...

6 días ago | 0

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Answered

How to fix axes in dynamic plot

Try this: x=@(t)(sin(4*t)).^2; y=@(t)cos(5*t); z=pi; figure(1) for t=0:0.002:z plot(x(t),y(t),'.','MarkerSize',4,'c...

How to fix axes in dynamic plot

Try this: x=@(t)(sin(4*t)).^2; y=@(t)cos(5*t); z=pi; figure(1) for t=0:0.002:z plot(x(t),y(t),'.','MarkerSize',4,'c...

7 días ago | 0

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