Answered

Data Recovery for the Original Image

See for example: How do I extract data from MATLAB figures? Use the saveas function to save the resulting figure as a .png imag...

Data Recovery for the Original Image

See for example: How do I extract data from MATLAB figures? Use the saveas function to save the resulting figure as a .png imag...

9 days ago | 0

Answered

how to change the front size and the inclination in a bar graph

‘2- how can I get the name to be written normally( those low characters should be on the same level as others)’ ‘Escape’ th...

how to change the front size and the inclination in a bar graph

‘2- how can I get the name to be written normally( those low characters should be on the same level as others)’ ‘Escape’ th...

9 days ago | 0

Answered

Convolution of two Gaussian functions without conv

Just choose any arbitrary vector for ‘z’ that is long enough to completely support the signals to be convolved. For a Gaussian,...

Convolution of two Gaussian functions without conv

Just choose any arbitrary vector for ‘z’ that is long enough to completely support the signals to be convolved. For a Gaussian,...

10 days ago | 1

| accepted

Answered

Finding top and bottom 10% of data

If the Statistics and Machine Learning Toolbox is available, use the prctile function — x = randn(1,20) ...

Finding top and bottom 10% of data

If the Statistics and Machine Learning Toolbox is available, use the prctile function — x = randn(1,20) ...

10 days ago | 0

Answered

Hello Everyone, I need to pass a low pass filter in this plot and I can't find the best way to do that. Someone can help me? Thanks.

Use the freqz function (or freqs linked to in that documentation page, if it is a continuous-time filter) — [b,a] = butter(8...

Hello Everyone, I need to pass a low pass filter in this plot and I can't find the best way to do that. Someone can help me? Thanks.

Use the freqz function (or freqs linked to in that documentation page, if it is a continuous-time filter) — [b,a] = butter(8...

10 days ago | 0

| accepted

Answered

Why do I get "Array indices must be positive integers or logical values"?

MATLAB does not recognise implicit multiplication, so the missing multiplication operator vt=vf(1-exp(-t/tao)); ↑ ← HERE ...

Why do I get "Array indices must be positive integers or logical values"?

MATLAB does not recognise implicit multiplication, so the missing multiplication operator vt=vf(1-exp(-t/tao)); ↑ ← HERE ...

10 days ago | 0

Why do I get "Array indices must be positive integers or logical values"?

MATLAB does not recognise implicit multiplication, so the missing multiplication operator vt=vf(1-exp(-t/tao)); ↑ ← HERE ...

10 days ago | 0

Answered

My graph won't display when I run my code. How do I get it to show?

Without seeing the ‘myFunc’ code, there is no way to provide a meaningful reply. The most likely result is that with: ICs=...

My graph won't display when I run my code. How do I get it to show?

Without seeing the ‘myFunc’ code, there is no way to provide a meaningful reply. The most likely result is that with: ICs=...

10 days ago | 0

Answered

How do I change the values of the axes?

Try something like this — x = linspace(0, 21, 25); y = rand(size(x)); figure plot(x, y) xt = get(gca, 'XTick'); xtv = l...

How do I change the values of the axes?

Try something like this — x = linspace(0, 21, 25); y = rand(size(x)); figure plot(x, y) xt = get(gca, 'XTick'); xtv = l...

10 days ago | 0

| accepted

Answered

Ignore NaN values in a Table

Since the Question appears to apply to the prod funciion, see the section on Product Excluding NaN. (I am not certain when that...

Ignore NaN values in a Table

Since the Question appears to apply to the prod funciion, see the section on Product Excluding NaN. (I am not certain when that...

10 days ago | 0

Answered

How to change the values of both axes

There are ways to change the exponent display of the axis rulers using the NumericRuler Properties, however that is not necessar...

How to change the values of both axes

There are ways to change the exponent display of the axis rulers using the NumericRuler Properties, however that is not necessar...

10 days ago | 0

| accepted

Answered

How do i define a variable as a function?

I suspect this works the similiarly in Maple (that I do not currently have) — syms t theta(t) f=cos(theta(t)); dfdt(t) =...

How do i define a variable as a function?

I suspect this works the similiarly in Maple (that I do not currently have) — syms t theta(t) f=cos(theta(t)); dfdt(t) =...

11 days ago | 0

| accepted

Answered

what do you obtain when you do the f

‘what do you obtain ?’ Run it and plot it (using the Signal Processing Toolbox rectpuls function) to see the result — t = lin...

what do you obtain when you do the f

‘what do you obtain ?’ Run it and plot it (using the Signal Processing Toolbox rectpuls function) to see the result — t = lin...

11 days ago | 0

| accepted

Answered

how can use ode45 for differential equation system with time dependent data

ODE with Time-Dependent Terms

how can use ode45 for differential equation system with time dependent data

ODE with Time-Dependent Terms

11 days ago | 0

Answered

plot the probability distribution from Schrodinger Equation

It gives a blank plot because the linspace calls are only producing one element. The third argument to linspace is the number o...

plot the probability distribution from Schrodinger Equation

It gives a blank plot because the linspace calls are only producing one element. The third argument to linspace is the number o...

11 days ago | 1

| accepted

Answered

how do i find the interception of these two fuctions i1 and i2

This was a challenge! I tried this a couple times before I had an appropriate insight to calculating the intersection. (I ma...

how do i find the interception of these two fuctions i1 and i2

This was a challenge! I tried this a couple times before I had an appropriate insight to calculating the intersection. (I ma...

11 days ago | 1

| accepted

Answered

inclined number in x-axis using scatter3 view(0,90)

That is the normal behaviour for the last few releases. One way to straighten the tick labels without having them overlap is ...

inclined number in x-axis using scatter3 view(0,90)

That is the normal behaviour for the last few releases. One way to straighten the tick labels without having them overlap is ...

11 days ago | 0

| accepted

Answered

Plot area is empty

Use element-wise (array) division (./) instead of matrix division (/) and it works. (Matrix division will produce one value, ho...

Plot area is empty

Use element-wise (array) division (./) instead of matrix division (/) and it works. (Matrix division will produce one value, ho...

11 days ago | 1

| accepted

Answered

Formatting Subscript, and Superscript in Text

Note that the sprintf call is not required for this, unless it is necessary to also print variables — text(0.4, 0.4, sprintf('...

Formatting Subscript, and Superscript in Text

Note that the sprintf call is not required for this, unless it is necessary to also print variables — text(0.4, 0.4, sprintf('...

12 days ago | 0

Answered

how to mark and print the intersecting coordinates of two lines

Much depends on what ‘x1’, ‘y1’ and the rest are. One approach (sssuming multiple intersections, although thiis will also wo...

how to mark and print the intersecting coordinates of two lines

Much depends on what ‘x1’, ‘y1’ and the rest are. One approach (sssuming multiple intersections, although thiis will also wo...

12 days ago | 0

| accepted

Answered

why does the surf command give me this result?

I have no idea what the data are, or how the data are being plotted. If the colormap is gray the ‘brighter’ values are higher...

why does the surf command give me this result?

I have no idea what the data are, or how the data are being plotted. If the colormap is gray the ‘brighter’ values are higher...

12 days ago | 0

Answered

Converting a 2D matrix from Cartesian coordinates to Polar

Converting it to polar coordinates using the cart2pol funciton is likely an option. .

Converting a 2D matrix from Cartesian coordinates to Polar

Converting it to polar coordinates using the cart2pol funciton is likely an option. .

12 days ago | 0

Answered

How to open a file of unknown type?

The ‘random characters’ likely mean that it is a binary file. If so, use fread to read it, although unless more is known about ...

How to open a file of unknown type?

The ‘random characters’ likely mean that it is a binary file. If so, use fread to read it, although unless more is known about ...

12 days ago | 0

Answered

Complex representation of eigenvalues of a symbolic 2x2 matrix

This is likely as close as it is possible to get — syms a A = [0, 1; -1, 2*cos(a)]; lambda = eig(A) lambda = simpl...

Complex representation of eigenvalues of a symbolic 2x2 matrix

This is likely as close as it is possible to get — syms a A = [0, 1; -1, 2*cos(a)]; lambda = eig(A) lambda = simpl...

12 days ago | 0

Answered

Find and replace value in a table

Try something like this — Country = {'Australia';'Germany';'Canada';'United Kingdom';'France'}; Location = Country(randi(nu...

Find and replace value in a table

Try something like this — Country = {'Australia';'Germany';'Canada';'United Kingdom';'France'}; Location = Country(randi(nu...

12 days ago | 0

Answered

Reshape to column vector

Transpose ‘a’ before calling reshape — a = [1 2 3 4 5 6 7 8 9 10 11 12]; b = r...

Reshape to column vector

Transpose ‘a’ before calling reshape — a = [1 2 3 4 5 6 7 8 9 10 11 12]; b = r...

13 days ago | 0

Answered

How to make the axis labels of a plot BOLD

The axis lables and titles are text objects. Try something like this — x = 1:10; y = randn(size(x)); figure plot(x, y)...

How to make the axis labels of a plot BOLD

The axis lables and titles are text objects. Try something like this — x = 1:10; y = randn(size(x)); figure plot(x, y)...

13 days ago | 0

| accepted

Answered

Equation to exponential eq using curve fit tool.

It will produce the correct values if it is allowed to. The ‘b’ value is 100 times greater than it should be, according to the ...

Equation to exponential eq using curve fit tool.

It will produce the correct values if it is allowed to. The ‘b’ value is 100 times greater than it should be, according to the ...

13 days ago | 0

Answered

Why do I receive a subplot error?

That’s not how subplot works. It should be something like this — figure(1) hxl = subplot(2,2,1); scatter(height,leg) lsl...

Why do I receive a subplot error?

That’s not how subplot works. It should be something like this — figure(1) hxl = subplot(2,2,1); scatter(height,leg) lsl...

13 days ago | 0

| accepted

Answered

How do I plot this Fourier series funcion?

I am not exactly certain what you want to do, however the loop is likely not necessary, sinc it is prefgerable to use MATLAB’s v...

How do I plot this Fourier series funcion?

I am not exactly certain what you want to do, however the loop is likely not necessary, sinc it is prefgerable to use MATLAB’s v...

13 days ago | 0