Answered

How to add values at blue dots in graphs?

You mean sum up the plotted blue 'square' marker data points? If so and you have only this plot as a data source, then you can ...

How to add values at blue dots in graphs?

You mean sum up the plotted blue 'square' marker data points? If so and you have only this plot as a data source, then you can ...

4 months ago | 0

Answered

I keep getting "Array indices must be positive integers or logical values."

clearvars;clc x = .993 : 0.01 : 1.283; for n = 1 :length(x) f(n) = 7*x(n)^3 - 2*x(n)^2 + 7*x(n) - 14; % Index has to be n...

I keep getting "Array indices must be positive integers or logical values."

clearvars;clc x = .993 : 0.01 : 1.283; for n = 1 :length(x) f(n) = 7*x(n)^3 - 2*x(n)^2 + 7*x(n) - 14; % Index has to be n...

4 months ago | 0

Answered

Change the frequency of an array

According to you exercise statement, this one works ok. f = input('Enter time frequency value: '); t0=0; dt = 1/f; tend = 30...

Change the frequency of an array

According to you exercise statement, this one works ok. f = input('Enter time frequency value: '); t0=0; dt = 1/f; tend = 30...

4 months ago | 0

Answered

How to remove rows with an empty cell from a big data set?

Here are a couple of good examples given by MATWORKS contributors: https://www.mathworks.com/matlabcentral/answers/42464-finding...

How to remove rows with an empty cell from a big data set?

Here are a couple of good examples given by MATWORKS contributors: https://www.mathworks.com/matlabcentral/answers/42464-finding...

4 months ago | 0

Answered

Removing NaN from matrix

Use isnan() and assign the value you want or remove the points containing NaNs. See help how to employ it: mathworks.com/help/ma...

Removing NaN from matrix

Use isnan() and assign the value you want or remove the points containing NaNs. See help how to employ it: mathworks.com/help/ma...

4 months ago | 0

Answered

Adjust my Figure Size

You'd need to adjust your figure window (POsition, location and drawable area) sizes, respectively. Here is the help doc: https...

Adjust my Figure Size

You'd need to adjust your figure window (POsition, location and drawable area) sizes, respectively. Here is the help doc: https...

4 months ago | 0

Answered

how can I create a struct with row vectors

It is quite straightforward to create row vector components for a Structure array. E.g.: t=linspace(0,13, 131); GT.Pos = randi...

how can I create a struct with row vectors

It is quite straightforward to create row vector components for a Structure array. E.g.: t=linspace(0,13, 131); GT.Pos = randi...

4 months ago | 0

Answered

how can I put xls data in to 2D lookup table toolbox in simulink

You'd need to employ: (1) [From Spreadsheet] block in order to read your data in MS Excel file. Note that you can specify in yo...

how can I put xls data in to 2D lookup table toolbox in simulink

You'd need to employ: (1) [From Spreadsheet] block in order to read your data in MS Excel file. Note that you can specify in yo...

4 months ago | 0

| accepted

Answered

Why shortcut Ctrl+T cannot uncomment the code in InitFcn of simulink model, but start the simulation?

In SImulink, the shortcut Ctrl+T is reserved for the "run" command that executes models. That's why it does not work for uncomme...

Why shortcut Ctrl+T cannot uncomment the code in InitFcn of simulink model, but start the simulation?

In SImulink, the shortcut Ctrl+T is reserved for the "run" command that executes models. That's why it does not work for uncomme...

5 months ago | 0

| accepted

Answered

what type of signal is this?FIR filters

Here is the corrected code. Time domain vs. Frequency domain analysis of the signal t vs. xx: load firlab2 %% input = xx; ...

what type of signal is this?FIR filters

Here is the corrected code. Time domain vs. Frequency domain analysis of the signal t vs. xx: load firlab2 %% input = xx; ...

5 months ago | 0

| accepted

Answered

Problem with Newton Raphson Method for Two Variables

close all; clc,clear % Newton Raphson solution of two nonlinear algebraic equations xy = [0 1]; % initial guesses iter=0; ma...

Problem with Newton Raphson Method for Two Variables

close all; clc,clear % Newton Raphson solution of two nonlinear algebraic equations xy = [0 1]; % initial guesses iter=0; ma...

5 months ago | 0

Answered

execute function if any evaluation is found to be false

if strcmp(TrueValMat{2,1}, BOX(1,:))==false... && strcmp(TrueValMat{2,2}, BOX(2,:))==false... ...

execute function if any evaluation is found to be false

if strcmp(TrueValMat{2,1}, BOX(1,:))==false... && strcmp(TrueValMat{2,2}, BOX(2,:))==false... ...

5 months ago | 1

Answered

Values of X where the function is between -0.5 and 0.5

syms x y fplot(legendreP(2:10, x), [-.5, .5]); axis([-0.5 0.5 -.5 .5])

Values of X where the function is between -0.5 and 0.5

syms x y fplot(legendreP(2:10, x), [-.5, .5]); axis([-0.5 0.5 -.5 .5])

5 months ago | 0

Answered

Sine Wave not recognize with find_system

You are right. Its name contains two words and because of that, supposedly it fails to locate it.

Sine Wave not recognize with find_system

You are right. Its name contains two words and because of that, supposedly it fails to locate it.

5 months ago | 1

Answered

Why do the ylabel renderings look different when Property Inspector says they are the same?

It looks like in the first one, "interpreter" option with "latex" has been employed. The second one is indeed is the default fon...

Why do the ylabel renderings look different when Property Inspector says they are the same?

It looks like in the first one, "interpreter" option with "latex" has been employed. The second one is indeed is the default fon...

5 months ago | 0

Answered

Having trouble writing conditional statements?

Hi, Here are the "if" conditions: if azimuths(n)> 90 && azimuths(n)<180 %condition 4 ... end ... if a...

Having trouble writing conditional statements?

Hi, Here are the "if" conditions: if azimuths(n)> 90 && azimuths(n)<180 %condition 4 ... end ... if a...

5 months ago | 1

Answered

i need help with my code, for error

Here are corrected part of your script: Ks=str2double(doubleKs{:}); Re=str2double(Re{:}); D = str2double(D{:}); % Data conv...

i need help with my code, for error

Here are corrected part of your script: Ks=str2double(doubleKs{:}); Re=str2double(Re{:}); D = str2double(D{:}); % Data conv...

5 months ago | 0

Answered

Creating a piecewise sine function having different frequency components

There are two opts. One elementwise multiplication and the other is just product. % (1) Elementwise: S1S2_e = s1.*s2; % (2) J...

Creating a piecewise sine function having different frequency components

There are two opts. One elementwise multiplication and the other is just product. % (1) Elementwise: S1S2_e = s1.*s2; % (2) J...

5 months ago | 0

Answered

Finding the index in two different arrays where values are closest

The answer is a quite straightforward that is to find the minimum of differences between the two lines. E.g.: DR = Rtrue1-Rtrue...

Finding the index in two different arrays where values are closest

The answer is a quite straightforward that is to find the minimum of differences between the two lines. E.g.: DR = Rtrue1-Rtrue...

6 months ago | 0

Answered

Running anonymous function in MATLAB for sub-mesh.

Hi, Here is one of the viable solutuons to your exercise using the function option: clearvars % Number of circles to draw ...

Running anonymous function in MATLAB for sub-mesh.

Hi, Here is one of the viable solutuons to your exercise using the function option: clearvars % Number of circles to draw ...

6 months ago | 0

| accepted

Answered

How to do FFT on accelerometer excel data in Matlab?

Import your data Perfform fft(). Here is a nice documentation how to sue fft().

How to do FFT on accelerometer excel data in Matlab?

Import your data Perfform fft(). Here is a nice documentation how to sue fft().

6 months ago | 0

Answered

Plotting y = kx

k=1:999; x =1:2024; F = k.* x(:); N = 25; contour(k, x, F, N), shg xlabel('k stifness'), ylael(' ...')

Plotting y = kx

k=1:999; x =1:2024; F = k.* x(:); N = 25; contour(k, x, F, N), shg xlabel('k stifness'), ylael(' ...')

6 months ago | 1

Answered

Viewing IMD binary data

You can read (import) binary data into MATLAB using fread() (see doc here) and then you can plot it to visualize, and so forth.

Viewing IMD binary data

You can read (import) binary data into MATLAB using fread() (see doc here) and then you can plot it to visualize, and so forth.

6 months ago | 0

Answered

Why does the array only work once?

Hi, You have overlooked a few dot operations. Here is the corrected part of your code: %Finding angle Phi of force P ...

Why does the array only work once?

Hi, You have overlooked a few dot operations. Here is the corrected part of your code: %Finding angle Phi of force P ...

6 months ago | 1

Answered

Variable indexing for loop when vector is negative (Array indices must be positive integers or logical values)

Hi, Vectorization is the most efficient way, e.g.: a = 12*x.^5; Or if you need to do via a loop, then for ii=1:numel(x) ...

Variable indexing for loop when vector is negative (Array indices must be positive integers or logical values)

Hi, Vectorization is the most efficient way, e.g.: a = 12*x.^5; Or if you need to do via a loop, then for ii=1:numel(x) ...

6 months ago | 0

Answered

How to check if a column data is equal to any of a group of values?

Altenrative (more efficient one) solution can be this one: S = sum(sum(ismember(A,B)))

How to check if a column data is equal to any of a group of values?

Altenrative (more efficient one) solution can be this one: S = sum(sum(ismember(A,B)))

6 months ago | 0

Answered

How to check if a column data is equal to any of a group of values?

You can use a loop for instance if you have many Bs, e.g.: for ii = 1:numel(B) Ind = A==B(ii); S(ii) = sum(Ind(:)); ...

How to check if a column data is equal to any of a group of values?

You can use a loop for instance if you have many Bs, e.g.: for ii = 1:numel(B) Ind = A==B(ii); S(ii) = sum(Ind(:)); ...

6 months ago | 0

Answered

Taylor Series for e^x with while loop

x = 1.5; SUM = 0; ANS = exp(x); Err = ANS-SUM; Err_Margin = 1e-9; ii=0; while Err > Err_margin ii=ii+1; ...

Taylor Series for e^x with while loop

x = 1.5; SUM = 0; ANS = exp(x); Err = ANS-SUM; Err_Margin = 1e-9; ii=0; while Err > Err_margin ii=ii+1; ...

6 months ago | 0

Answered

electromechanical relays and real time simulation

With your exercise, it is quite easy to employ Simulink/Simscape toolbox. See simulink dashboard tutorial: https://www.mathworks...

electromechanical relays and real time simulation

With your exercise, it is quite easy to employ Simulink/Simscape toolbox. See simulink dashboard tutorial: https://www.mathworks...

6 months ago | 0