Answered

How do I add a column vector or matrix to a 6X6 original matrix?

here is an example: clear all zeros_col = zeros(142,1); c11 = (1:142)'; fantastic_matrix = [c11 zeros_col zeros_col zeros_co...

How do I add a column vector or matrix to a 6X6 original matrix?

here is an example: clear all zeros_col = zeros(142,1); c11 = (1:142)'; fantastic_matrix = [c11 zeros_col zeros_col zeros_co...

21 days ago | 0

| accepted

Answered

the loop does not display results

You are not looping over the values of "i" nor "j" i=1:length(X(:,1)) i = 1 2 3 4 5 6 7 ...

the loop does not display results

You are not looping over the values of "i" nor "j" i=1:length(X(:,1)) i = 1 2 3 4 5 6 7 ...

21 days ago | 0

Answered

Better parallelization than parfor?

maybe take a look at arrayfun(). https://www.mathworks.com/help/matlab/ref/arrayfun.html

Better parallelization than parfor?

maybe take a look at arrayfun(). https://www.mathworks.com/help/matlab/ref/arrayfun.html

21 days ago | 0

Answered

Elements of table equal to elements of another table

Here you go: I loop over all station names and check where in the data table i find these names. I generate a boolean index in ...

Elements of table equal to elements of another table

Here you go: I loop over all station names and check where in the data table i find these names. I generate a boolean index in ...

24 days ago | 0

Answered

How to set the function to be able to use all variables in the script without need to be named in the function def?

i would suggest creating a struct containing the required variables. %my script params.a = 1; params.b = "very string" param...

How to set the function to be able to use all variables in the script without need to be named in the function def?

i would suggest creating a struct containing the required variables. %my script params.a = 1; params.b = "very string" param...

1 month ago | 0

Answered

How can i speed up my function?

In order to help you in a significant way, it would be useful to have a sample data set on which we could run the function. On ...

How can i speed up my function?

In order to help you in a significant way, it would be useful to have a sample data set on which we could run the function. On ...

1 month ago | 1

| accepted

Answered

Differential equation and problem with minmax

This error message tells you that you don't have the required package installed in order to use the minmax() function. Matlab c...

Differential equation and problem with minmax

This error message tells you that you don't have the required package installed in order to use the minmax() function. Matlab c...

1 month ago | 0

Answered

Decrease time to upload a figure

In addition to @Looky 's answer, try to remove the set(gca, 'YDir','reverse') from the while loop, I'm pretty sure you only n...

Decrease time to upload a figure

In addition to @Looky 's answer, try to remove the set(gca, 'YDir','reverse') from the while loop, I'm pretty sure you only n...

2 months ago | 1

Answered

How to plot curve with one color without precising which color it is?

aloa for i = 1:10 if i == 1 h = plot(1:10,1:2*i:20*i) v = get(h,'Color'); else plot(1:10,1...

How to plot curve with one color without precising which color it is?

aloa for i = 1:10 if i == 1 h = plot(1:10,1:2*i:20*i) v = get(h,'Color'); else plot(1:10,1...

2 months ago | 0

| accepted

Answered

Deleting plotted image from a figure if conditions are met

If you get the handle of the plot like so: h = plot(1,1,'Xr') you can just delete the handle and the data disapears delete(h)...

Deleting plotted image from a figure if conditions are met

If you get the handle of the plot like so: h = plot(1,1,'Xr') you can just delete the handle and the data disapears delete(h)...

2 months ago | 0

| accepted

Answered

Does anyone know why it is also taking point 9 as convex hull point eventhough it shouldn't?

By observation, points 8, 9 and 10 are on the same line. You have to add a condition to decimate redundant points. (points that...

Does anyone know why it is also taking point 9 as convex hull point eventhough it shouldn't?

By observation, points 8, 9 and 10 are on the same line. You have to add a condition to decimate redundant points. (points that...

2 months ago | 0

| accepted

Answered

How to crop detected face part?

RGB Images are 3D matrices with dimenions = (resolution_x, resolution_y, 3) I suppose the bounding box contains the face. Try ...

How to crop detected face part?

RGB Images are 3D matrices with dimenions = (resolution_x, resolution_y, 3) I suppose the bounding box contains the face. Try ...

3 months ago | 1

Answered

How to extract matrix from a bigger matrix based on threshold of each column?

here is my try based on what i understood. given a matrix a nx3: a = [5,6,8;1,2,3;2,3,4;3,4,5;4,5,6] a = 5 6 ...

How to extract matrix from a bigger matrix based on threshold of each column?

here is my try based on what i understood. given a matrix a nx3: a = [5,6,8;1,2,3;2,3,4;3,4,5;4,5,6] a = 5 6 ...

3 months ago | 0

| accepted

Answered

Block diagonal matrix of identity times scalar.

here is my take. a=[1,2]; c = round(a(1):1/(length(b(:,1))-1):a(2)); matrix = diag(c);

Block diagonal matrix of identity times scalar.

here is my take. a=[1,2]; c = round(a(1):1/(length(b(:,1))-1):a(2)); matrix = diag(c);

3 months ago | 0

| accepted

Answered

add vertical line on a plot for Confidence intervalle.

Have you tried this function? https://www.mathworks.com/help/matlab/ref/errorbar.html

add vertical line on a plot for Confidence intervalle.

Have you tried this function? https://www.mathworks.com/help/matlab/ref/errorbar.html

3 months ago | 0

| accepted

Answered

Is it possible to perform additional operation on job cancellation?

Checkout this function: https://www.mathworks.com/help/matlab/ref/oncleanup.html

Is it possible to perform additional operation on job cancellation?

Checkout this function: https://www.mathworks.com/help/matlab/ref/oncleanup.html

3 months ago | 1

Answered

How can I fill my cell array?

here is my try: U{1} = [1,2]; U{2} = [2,3]; T = [1,2,3]; S = {}; for i = 1:length(T) temp_cell = {}; k=1; f...

How can I fill my cell array?

here is my try: U{1} = [1,2]; U{2} = [2,3]; T = [1,2,3]; S = {}; for i = 1:length(T) temp_cell = {}; k=1; f...

3 months ago | 0

| accepted

Answered

How do i create a projectile?

as example for a non-accelerating projectile (which is not your case) this could look like time = 0:1:100; % time goes from 0 t...

How do i create a projectile?

as example for a non-accelerating projectile (which is not your case) this could look like time = 0:1:100; % time goes from 0 t...

3 months ago | 0

Answered

Creating Sine wave with random values

here is my try: random_phase_offset = rand(1,1)*2*pi; max_amplitude = 20; random_amplitude = rand(1,1)*max_amplitude; t = ...

Creating Sine wave with random values

here is my try: random_phase_offset = rand(1,1)*2*pi; max_amplitude = 20; random_amplitude = rand(1,1)*max_amplitude; t = ...

3 months ago | 1

Answered

Saving each data from for loop

If you want to store elements (like strings) that are not the same size you can use cells. A = {'abc', 'defg', 'hijklmnop', 1...

Saving each data from for loop

If you want to store elements (like strings) that are not the same size you can use cells. A = {'abc', 'defg', 'hijklmnop', 1...

3 months ago | 0

Answered

basic question about matrices

As i think this is an homework i'd suggest reading: https://www.mathworks.com/help/matlab/ref/ones.html https://www.mathworks....

basic question about matrices

As i think this is an homework i'd suggest reading: https://www.mathworks.com/help/matlab/ref/ones.html https://www.mathworks....

3 months ago | 0

Answered

how can i change an indice in Matrix as vector?

Now i understand. Here is a solution that you can easily expand. clear protein(1).name = 'A'; protain(1).bool_value = [1...

how can i change an indice in Matrix as vector?

Now i understand. Here is a solution that you can easily expand. clear protein(1).name = 'A'; protain(1).bool_value = [1...

3 months ago | 1

Answered

how can i change an indice in Matrix as vector?

I am not sure what you are trying to do as a whole, but if you want to quickly find where there are occurences of a certain stri...

how can i change an indice in Matrix as vector?

I am not sure what you are trying to do as a whole, but if you want to quickly find where there are occurences of a certain stri...

3 months ago | 1

Answered

problem in optimization by MATLAB using genetic algorithm

Try to see if the problem is not the same as in this question: https://www.mathworks.com/matlabcentral/answers/76730-genetic-al...

problem in optimization by MATLAB using genetic algorithm

Try to see if the problem is not the same as in this question: https://www.mathworks.com/matlabcentral/answers/76730-genetic-al...

3 months ago | 1

Answered

Create a string array (MxN) where each element is a repeated character based off a numeric array (MxN)

try this: B = arrayfun(@(x) repmat('#',1,x),A, 'UniformOutput', false) B = '####' [1x0 char] '#' '####...

Create a string array (MxN) where each element is a repeated character based off a numeric array (MxN)

try this: B = arrayfun(@(x) repmat('#',1,x),A, 'UniformOutput', false) B = '####' [1x0 char] '#' '####...

3 months ago | 2

Answered

Delete - Variance vs standard deviation when using var() and std() with decimal values from CSV file?

Isn't this normal? As the variance is the square of the standard deviation? 0.1^2 = 0.01

Delete - Variance vs standard deviation when using var() and std() with decimal values from CSV file?

Isn't this normal? As the variance is the square of the standard deviation? 0.1^2 = 0.01

3 months ago | 0

| accepted

Answered

Unknown operation performed.

This is called logical (or boolean) indexing. https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab....

Unknown operation performed.

This is called logical (or boolean) indexing. https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab....

3 months ago | 0

| accepted

Solved

Extract leading non-zero digit

<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

3 months ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

3 months ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

3 months ago