Answered

Unable to read data from text file in matlab

The file your are looking for is probably not there, or at least, not on the MATLAB path. See what fid is: if it is -1, then you...

Unable to read data from text file in matlab

The file your are looking for is probably not there, or at least, not on the MATLAB path. See what fid is: if it is -1, then you...

1 year ago | 0

Answered

Why doesn't the for loop work?

p = isprime(p) gives you a logical vector, similar to p = [true true false true] When you try to assign i to p(i) it converts ...

Why doesn't the for loop work?

p = isprime(p) gives you a logical vector, similar to p = [true true false true] When you try to assign i to p(i) it converts ...

1 year ago | 0

Answered

Error: Not enough input arguments

There are probably other array concatenation issues in your equation definitions, but regarding your current issue, remove the c...

Error: Not enough input arguments

There are probably other array concatenation issues in your equation definitions, but regarding your current issue, remove the c...

1 year ago | 0

Answered

How to input corresponding data from separate matrices

A = [1 2 3 4 5 6 7 8 9 10]'; B = [ 2 3 1 7 9 10 4 6 5 8; 12 43 64 94 27 58 64 13 90 74]'; % Iterate over every element of A ...

How to input corresponding data from separate matrices

A = [1 2 3 4 5 6 7 8 9 10]'; B = [ 2 3 1 7 9 10 4 6 5 8; 12 43 64 94 27 58 64 13 90 74]'; % Iterate over every element of A ...

1 year ago | 0

Answered

Add one year to date

You can use the datetime and years commands to do what you want: date = '2022-01-05'; d = datetime(date) d1 = d + years(1) s...

Add one year to date

You can use the datetime and years commands to do what you want: date = '2022-01-05'; d = datetime(date) d1 = d + years(1) s...

1 year ago | 0

| accepted

Answered

How to pad zero in string using sprintf

This should work on both char arrays as well as strings: a = { '1010' '111' '010' '10' '101...

How to pad zero in string using sprintf

This should work on both char arrays as well as strings: a = { '1010' '111' '010' '10' '101...

1 year ago | 2

Answered

How to implement a transfer function with variable coefficients?

The top part of your first diagram does not implement 1/(b+s). To confirm this, label the output of the top sum block as e. The...

How to implement a transfer function with variable coefficients?

The top part of your first diagram does not implement 1/(b+s). To confirm this, label the output of the top sum block as e. The...

1 year ago | 0

Answered

Scaled Step Response & Scaled Ramp Response of Transfer Function

Since responses of linear time-invariant (LTI) systems have the same shape for various amplitudes of a given input signal and ar...

Scaled Step Response & Scaled Ramp Response of Transfer Function

Since responses of linear time-invariant (LTI) systems have the same shape for various amplitudes of a given input signal and ar...

1 year ago | 1

| accepted

Answered

Different tick values on same axis

You can generate a ticks vector, which should be sorted and with unique elements: a=0; b=4; c=0; d=6; g=1; dxs=0.2; dxf...

Different tick values on same axis

You can generate a ticks vector, which should be sorted and with unique elements: a=0; b=4; c=0; d=6; g=1; dxs=0.2; dxf...

1 year ago | 1

Answered

How to change corrplot line and scatter dots properties?

Get the handle of the plot out and modify the desired properties: [~,~,h] = corrplot(rand(100,2)) h(1,2) h(1,2).Color = 'r'; ...

How to change corrplot line and scatter dots properties?

Get the handle of the plot out and modify the desired properties: [~,~,h] = corrplot(rand(100,2)) h(1,2) h(1,2).Color = 'r'; ...

1 year ago | 0

| accepted

Answered

auto correlation time in matlab

"Autocorrelation time" most likely means the lag (in days, in your case) where the autocorrelation sequence of your data it at a...

auto correlation time in matlab

"Autocorrelation time" most likely means the lag (in days, in your case) where the autocorrelation sequence of your data it at a...

1 year ago | 0

Answered

Trying to copy a column from a array into a tall array

Use tall() around the new data column: T = tall(rand(10,2)); t = rand(10,1); T(:,2) = tall(t);

Trying to copy a column from a array into a tall array

Use tall() around the new data column: T = tall(rand(10,2)); t = rand(10,1); T(:,2) = tall(t);

1 year ago | 0

Answered

Why am I obtaining incorrect values for Lipschitz 1/2 norms using the central difference method?

Unless I misunderstodd something, the derivative of is . Within the domain of [0,1], the maximum absolute value of this is...

Why am I obtaining incorrect values for Lipschitz 1/2 norms using the central difference method?

Unless I misunderstodd something, the derivative of is . Within the domain of [0,1], the maximum absolute value of this is...

1 year ago | 0

Answered

I am trying to do a scatter plot with 2 different Y axes with different scales using imported data on a graph.

% Dataset in a table T = table((1:100)', cumsum(rand(100,1)), cumsum(rand(100,1)), 'VariableNames', {'Time', 'Data1', 'Data2'})...

I am trying to do a scatter plot with 2 different Y axes with different scales using imported data on a graph.

% Dataset in a table T = table((1:100)', cumsum(rand(100,1)), cumsum(rand(100,1)), 'VariableNames', {'Time', 'Data1', 'Data2'})...

1 year ago | 1

Answered

How can I visualize by frequency for frequency range 0 - 70.87Hz? (EEG_1=3.8088)

load('VEPdata1.mat') subplot(211) plot(EEGdata) subplot(212) pspectrum(EEGdata, fs) ax = gca; ax.XLim = [0 0.072];

How can I visualize by frequency for frequency range 0 - 70.87Hz? (EEG_1=3.8088)

load('VEPdata1.mat') subplot(211) plot(EEGdata) subplot(212) pspectrum(EEGdata, fs) ax = gca; ax.XLim = [0 0.072];

1 year ago | 0

Answered

FSOLVE was working until enclosed in a function - difficult for me to interpret error

The variable pKb that you pass to the function is not initialized as global and assigned a value, so it is passed as [] to the f...

FSOLVE was working until enclosed in a function - difficult for me to interpret error

The variable pKb that you pass to the function is not initialized as global and assigned a value, so it is passed as [] to the f...

1 year ago | 1

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Answered

How to plot the phase margin?

The transfer function 20/(s+1) is your controller. As it is, it does not give you a 50-degree phase margin. You need to modify t...

How to plot the phase margin?

The transfer function 20/(s+1) is your controller. As it is, it does not give you a 50-degree phase margin. You need to modify t...

1 year ago | 0

| accepted

Answered

Hello, I would like to convert this mathematical equation into MATLAB code.

x = rand(100,1); N = numel(x); num = (sum(x)/N)^2; den = sum(abs(x.^2)) / N; s = num / den

Hello, I would like to convert this mathematical equation into MATLAB code.

x = rand(100,1); N = numel(x); num = (sum(x)/N)^2; den = sum(abs(x.^2)) / N; s = num / den

1 year ago | 1

Answered

Have title of plot change IF edit field has text, otherwise default

You are comparing the edit field object itself to 0, instead of the content of the edit field. Try if ~isempty(app.GraphTitleEd...

Have title of plot change IF edit field has text, otherwise default

You are comparing the edit field object itself to 0, instead of the content of the edit field. Try if ~isempty(app.GraphTitleEd...

1 year ago | 0

| accepted

Answered

How to make lines at given angles?

Looks like you are actually looking for 4 lines since angles of 0 and 360 would produce the same lines. But here is the for-loop...

How to make lines at given angles?

Looks like you are actually looking for 4 lines since angles of 0 and 360 would produce the same lines. But here is the for-loop...

1 year ago | 0

| accepted

Answered

How to count the total number of blink?

You can use a peak detection algorithm such as the islocalmax() command: https://www.mathworks.com/help/matlab/ref/islocalmax.ht...

How to count the total number of blink?

You can use a peak detection algorithm such as the islocalmax() command: https://www.mathworks.com/help/matlab/ref/islocalmax.ht...

1 year ago | 0

| accepted

Answered

Retrieve the coordinates of the point from the graph

If you want to do it manually on the plot by clicking with the mouse at or near the intersections, and get their coordinates, yo...

Retrieve the coordinates of the point from the graph

If you want to do it manually on the plot by clicking with the mouse at or near the intersections, and get their coordinates, yo...

1 year ago | 0

Answered

what's wrong with this code?

You don't need quotes inside the solve() command and use '==' for equality instead of '=': syms x syms y [x,y] = solve(x^3 - ...

what's wrong with this code?

You don't need quotes inside the solve() command and use '==' for equality instead of '=': syms x syms y [x,y] = solve(x^3 - ...

1 year ago | 0

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Answered

Shutdown at specific time

Call exit in StopFcn of the Timer object.

Shutdown at specific time

Call exit in StopFcn of the Timer object.

1 year ago | 0

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Answered

Merging tables with partly the same column names, but sometimes different dimensions

This seems like a table (outer) join problem. Take a look at: https://www.mathworks.com/help/matlab/ref/table.outerjoin.html Tl...

Merging tables with partly the same column names, but sometimes different dimensions

This seems like a table (outer) join problem. Take a look at: https://www.mathworks.com/help/matlab/ref/table.outerjoin.html Tl...

1 year ago | 0

| accepted

Answered

only one plot line is showing

There are two issues with your code. First, line([label_50 label_50], [round(N*0.5) round(N*0.5)]) is a point, not a line. So ...

only one plot line is showing

There are two issues with your code. First, line([label_50 label_50], [round(N*0.5) round(N*0.5)]) is a point, not a line. So ...

1 year ago | 0

| accepted

Answered

Why does the font size in my Axes change spontaneously?

axis.FontSize and axis.Label.FontSize are not independent properties. Setting axis.FontSize will not affect axis.Label.FontSize...

Why does the font size in my Axes change spontaneously?

axis.FontSize and axis.Label.FontSize are not independent properties. Setting axis.FontSize will not affect axis.Label.FontSize...

1 year ago | 1

Answered

Rotate 3-D Point Cloud Using Rigid Transformation

First translate the point cloud to the origin using a translation of -G. Rotate the point cloud around an axis. Translate it b...

Rotate 3-D Point Cloud Using Rigid Transformation

First translate the point cloud to the origin using a translation of -G. Rotate the point cloud around an axis. Translate it b...

1 year ago | 1

Answered

How to graph R0 against two parameters on a 3D plot with planes for certain R0 values?

[X,Y] = meshgrid(0:0.1:0.4, 0:0.01:0.4); R0 = 1; Z = R0 * ones(size(X)); surf(X,Y,Z) colormap('turbo') shading interp xlab...

How to graph R0 against two parameters on a 3D plot with planes for certain R0 values?

[X,Y] = meshgrid(0:0.1:0.4, 0:0.01:0.4); R0 = 1; Z = R0 * ones(size(X)); surf(X,Y,Z) colormap('turbo') shading interp xlab...

1 year ago | 0

| accepted

Answered

ode45 results won't plot

Your functions are a bit intertwined: solveODE_SecondOrder() function solveODE_SecondOrder() t = 0:.001:10; q0 = [0.1; 0.3...

ode45 results won't plot

Your functions are a bit intertwined: solveODE_SecondOrder() function solveODE_SecondOrder() t = 0:.001:10; q0 = [0.1; 0.3...

1 year ago | 0