Answered

Testing a created function

First, it is best not to use ‘ans’ as a variable, since it is the default variable and can be overwritten. Second, the the if...

Testing a created function

First, it is best not to use ‘ans’ as a variable, since it is the default variable and can be overwritten. Second, the the if...

3 days ago | 0

| accepted

Answered

Solve a system of linear equations in matrix form

The problem is that the system is sparse, so you need to use sparse functions with it. Try this: Left = [1 -1 0 0 0; 1 0 0 ...

Solve a system of linear equations in matrix form

The problem is that the system is sparse, so you need to use sparse functions with it. Try this: Left = [1 -1 0 0 0; 1 0 0 ...

3 days ago | 0

| accepted

Answered

Error plotting bode diagram of a transfer function inside a matrix

That is not the error. The error is that you are using the Symbolic Math Toolbox when you need to be using the Control System...

Error plotting bode diagram of a transfer function inside a matrix

That is not the error. The error is that you are using the Symbolic Math Toolbox when you need to be using the Control System...

4 days ago | 0

| accepted

Answered

how to plot 2D Vector field of a 3D ode

The easiest way is to just change the view direction: figure q=quiver3(x1,y1,z1,u,v,w ,2); figure(gcf); view(0, 90) Make ap...

how to plot 2D Vector field of a 3D ode

The easiest way is to just change the view direction: figure q=quiver3(x1,y1,z1,u,v,w ,2); figure(gcf); view(0, 90) Make ap...

4 days ago | 1

Answered

Plot doesn't show anything

Try this slight edit of your code: orbit=zeros(1,300); j=0; % parameter range rv=2.8:0.001:4; for k = 1:numel(rv) r =...

Plot doesn't show anything

Try this slight edit of your code: orbit=zeros(1,300); j=0; % parameter range rv=2.8:0.001:4; for k = 1:numel(rv) r =...

4 days ago | 0

| accepted

Answered

Scatter plot legend marker size is huge

The only possibility I can suggest is to use Yair Altman’s export_fig to export them to PDF.

Scatter plot legend marker size is huge

The only possibility I can suggest is to use Yair Altman’s export_fig to export them to PDF.

4 days ago | 0

Answered

3D plotting base surface

I am not certain what you are asking. The plot appears to be by the stem3 function. Try this: x = randn(1, 10); y = ran...

3D plotting base surface

I am not certain what you are asking. The plot appears to be by the stem3 function. Try this: x = randn(1, 10); y = ran...

4 days ago | 0

Answered

Solve Integral Equation with function handles

Every multiplication in ‘Fermi’ needs to be vectorised (with element-wise operations), the Symbolic Math Toolbox is not necessar...

Solve Integral Equation with function handles

Every multiplication in ‘Fermi’ needs to be vectorised (with element-wise operations), the Symbolic Math Toolbox is not necessar...

4 days ago | 1

| accepted

Answered

Graphs of mean and standard deviation

There are several ways, depending on what you want to do. See the errorbar function for one option.

Graphs of mean and standard deviation

There are several ways, depending on what you want to do. See the errorbar function for one option.

4 days ago | 0

Answered

scatter with custom color of point

I am not certain what you want. Try this: x = rand(1, 20); y = rand(1, 20); c = y >= 0.5; ...

scatter with custom color of point

I am not certain what you want. Try this: x = rand(1, 20); y = rand(1, 20); c = y >= 0.5; ...

4 days ago | 0

Answered

Fitting Data to a Non-Linear Curve

One possibility: x=[0 1 2 3 4 5 6 7 8 9 10]; y=[.0242 0.1940 0.2792 0.2358 0.1386 0.0598 0.0238 0.0090 0.0034 0.0013 0.002]; ...

Fitting Data to a Non-Linear Curve

One possibility: x=[0 1 2 3 4 5 6 7 8 9 10]; y=[.0242 0.1940 0.2792 0.2358 0.1386 0.0598 0.0238 0.0090 0.0034 0.0013 0.002]; ...

5 days ago | 0

| accepted

Answered

mono font not show up in matlab’s fonts

See: How can I add a new font to the list of available fonts in MATLAB?q - MATLAB Answers - MATLAB Central

mono font not show up in matlab’s fonts

See: How can I add a new font to the list of available fonts in MATLAB?q - MATLAB Answers - MATLAB Central

5 days ago | 0

Answered

How to use a timer most efficently for finding pings/second

One option for recording the times would be to use the clock function. Then use the etime function to recover the elapsed times...

How to use a timer most efficently for finding pings/second

One option for recording the times would be to use the clock function. Then use the etime function to recover the elapsed times...

5 days ago | 0

| accepted

Answered

Subplots squished to top of page, manually setting position not working

The code tells subplot to plot 12 rows and 3 columns. Try this instead: ax(ii) = subplot(nplts/3, 3, ii); The result is mu...

Subplots squished to top of page, manually setting position not working

The code tells subplot to plot 12 rows and 3 columns. Try this instead: ax(ii) = subplot(nplts/3, 3, ii); The result is mu...

5 days ago | 0

| accepted

Answered

Filing/interpolation of irregular sample time series multivariate data

Try this: T1 = readtable('Edward Bam Eddata.txt'); T2 = table2timetable(T1, 'RowTimes','TimeStamp'); T3 = retime(T2, 'daily'...

Filing/interpolation of irregular sample time series multivariate data

Try this: T1 = readtable('Edward Bam Eddata.txt'); T2 = table2timetable(T1, 'RowTimes','TimeStamp'); T3 = retime(T2, 'daily'...

5 days ago | 0

| accepted

Answered

Need to plot the determinant of the matrix for t 0 to 1?

Try this: PHI = @(t) [ 1, t, t/3-(2*exp(-3*t))/9+2/9, (2*t)/3+(2*exp(-3*t))/9-2/9; 0, 1, (5*exp(-3*t))/12-(3*exp(t))/4+1/...

Need to plot the determinant of the matrix for t 0 to 1?

Try this: PHI = @(t) [ 1, t, t/3-(2*exp(-3*t))/9+2/9, (2*t)/3+(2*exp(-3*t))/9-2/9; 0, 1, (5*exp(-3*t))/12-(3*exp(t))/4+1/...

5 days ago | 0

| accepted

Answered

MatLab Confidence interval range

Use the tinv function to calculate the critical values for normally-distributed data with varying sample sizes. (This is in the...

MatLab Confidence interval range

Use the tinv function to calculate the critical values for normally-distributed data with varying sample sizes. (This is in the...

5 days ago | 0

Answered

How can I insert the value of a symbol in symbolic matrix and convert it into a numerical matrix?

Please see Plotting error: Need to plot the evolution of symbolic matrix? to convert it to a numerical matrix (as an anonymous ...

How can I insert the value of a symbol in symbolic matrix and convert it into a numerical matrix?

Please see Plotting error: Need to plot the evolution of symbolic matrix? to convert it to a numerical matrix (as an anonymous ...

5 days ago | 0

Answered

for loop not working

We o not have your entire code. Note that the transpose call is not necessary, since the mean funciton also accepts a dimension...

for loop not working

We o not have your entire code. Note that the transpose call is not necessary, since the mean funciton also accepts a dimension...

5 days ago | 0

| accepted

Answered

Plotting error: Need to plot the evolution of symbolic matrix?

Try this: PHI = @(t) [ 1, t, t/3-(2*exp(-3*t))/9+2/9, (2*t)/3+(2*exp(-3*t))/9-2/9; 0, 1, (5*exp(-3*t))/12-(3*exp(t))/4+1/...

Plotting error: Need to plot the evolution of symbolic matrix?

Try this: PHI = @(t) [ 1, t, t/3-(2*exp(-3*t))/9+2/9, (2*t)/3+(2*exp(-3*t))/9-2/9; 0, 1, (5*exp(-3*t))/12-(3*exp(t))/4+1/...

5 days ago | 0

| accepted

Answered

surface fixed point value Z

I do not have the function you used to create the surface in your Question. Try this with it: [X,Y] = ndgrid(-2.5:0.1:2.5);...

surface fixed point value Z

I do not have the function you used to create the surface in your Question. Try this with it: [X,Y] = ndgrid(-2.5:0.1:2.5);...

6 days ago | 0

| accepted

Answered

X Y grids on 2D surface plot

If you want to see the grid lines, do not use shading interp Just do: [X,Y,Z] = peaks(25); figure surf(X, Y, Z) grid on ...

X Y grids on 2D surface plot

If you want to see the grid lines, do not use shading interp Just do: [X,Y,Z] = peaks(25); figure surf(X, Y, Z) grid on ...

6 days ago | 0

| accepted

Answered

Finding index of closest value in an array of different dimension

I am not certain that I understand what you want to do. If you want to use the discrete timestamps, the ismembertol function ...

Finding index of closest value in an array of different dimension

I am not certain that I understand what you want to do. If you want to use the discrete timestamps, the ismembertol function ...

6 days ago | 0

Answered

Fit Powerlaw to Data

Try this: STRESS = [0.574, 367.364, 449.112, 531.087, 596.241, 649.097, 695.038, 737.173, 815.008]; S...

Fit Powerlaw to Data

Try this: STRESS = [0.574, 367.364, 449.112, 531.087, 596.241, 649.097, 695.038, 737.173, 815.008]; S...

6 days ago | 0

| accepted

Answered

hwo to find inverse of marcum fuction

Try this: Q = marcumq(5, 10); % Create Output B0 = rand; ...

hwo to find inverse of marcum fuction

Try this: Q = marcumq(5, 10); % Create Output B0 = rand; ...

6 days ago | 0

Answered

I want to show the Magnitude response of three filters, as one response

It’s always worth experimenting. It seems that convolving the numerators and denominators of the individual filters is approp...

I want to show the Magnitude response of three filters, as one response

It’s always worth experimenting. It seems that convolving the numerators and denominators of the individual filters is approp...

6 days ago | 2

Answered

Variable plot title and legend

The easiest way is to use the sprintf function inside the title and legend, respectively. It also allows straightforward inclus...

Variable plot title and legend

The easiest way is to use the sprintf function inside the title and legend, respectively. It also allows straightforward inclus...

6 days ago | 0

Answered

Matlab considers different two equal numbers!

You are not seeing the entire picture. If you test ‘matrix(11,:)’: Check = matrix(11, :) - max(matrix(11,:)) the result is...

Matlab considers different two equal numbers!

You are not seeing the entire picture. If you test ‘matrix(11,:)’: Check = matrix(11, :) - max(matrix(11,:)) the result is...

7 days ago | 1

Answered

Plot call does not do its work properly.

The plot call you posted has it only plotting the second output of ‘spring_mass_system’. It doesn’t show three lines because ...

Plot call does not do its work properly.

The plot call you posted has it only plotting the second output of ‘spring_mass_system’. It doesn’t show three lines because ...

7 days ago | 0

| accepted

Answered

Finding a value and marking it in a graph

The only way I can see to calculate ‘M’ where ‘epss’ is equal to 0.009 is to duplicate the first nested loop, defining: epss =...

Finding a value and marking it in a graph

The only way I can see to calculate ‘M’ where ‘epss’ is equal to 0.009 is to duplicate the first nested loop, defining: epss =...

7 days ago | 0

| accepted