45 total contributions since 2019

Answered

Graphing Confidence Intervals with upper and lower bounds

You were creating a picture for every loop iteration, and the plot function can't interpolate between points if you give them on...

Graphing Confidence Intervals with upper and lower bounds

You were creating a picture for every loop iteration, and the plot function can't interpolate between points if you give them on...

1 jour ago | 0

Answered

Neural Network - MLP

I'm not sure why you want to shorten the code, it is already vectorize and I don't believe it can go so much less than this. Jus...

Neural Network - MLP

I'm not sure why you want to shorten the code, it is already vectorize and I don't believe it can go so much less than this. Jus...

1 jour ago | 0

Answered

How to repeat monthly data over several years?

Matlab has a function for concatenating values in different dimensions, you could solve your problem like this: A = randn(144,1...

How to repeat monthly data over several years?

Matlab has a function for concatenating values in different dimensions, you could solve your problem like this: A = randn(144,1...

1 jour ago | 0

| accepted

Answered

Generate normally distributed sample from data

I need to be careful to not start any discussion about how one actually define a normal distribution, but starting from the poin...

Generate normally distributed sample from data

I need to be careful to not start any discussion about how one actually define a normal distribution, but starting from the poin...

1 jour ago | 0

| accepted

Answered

Where are the bugs for this ODE finite difference problem that solve using Newton Raphson method?

I didn't check exactly your FEM implementations but one thing that I quickly noticed is that the Newton-Rapson is an iteractive ...

Where are the bugs for this ODE finite difference problem that solve using Newton Raphson method?

I didn't check exactly your FEM implementations but one thing that I quickly noticed is that the Newton-Rapson is an iteractive ...

9 jours ago | 0

Answered

How do I create a loop for this expression?

Those modifications fix your code. Your fogot the actually equation in the iteration and had some variables misplaced. a=input...

How do I create a loop for this expression?

Those modifications fix your code. Your fogot the actually equation in the iteration and had some variables misplaced. a=input...

9 jours ago | 0

Answered

I'm trying to make a game and need some help

I would maybe advise you to use somehting like Unity to create your game since Matlab is more to perform numerical computations....

I'm trying to make a game and need some help

I would maybe advise you to use somehting like Unity to create your game since Matlab is more to perform numerical computations....

9 jours ago | 0

Answered

how to combine two image to get one image

This should do what you want: I = imread('cameraman.tif'); I2 = imresize(rgb2gray(imread('onion.png')),[size(I,1),size(I,2)])...

how to combine two image to get one image

This should do what you want: I = imread('cameraman.tif'); I2 = imresize(rgb2gray(imread('onion.png')),[size(I,1),size(I,2)])...

9 jours ago | 0

Answered

fill a boundary region with white colour

You can transform the contourns in a binary image, fill it and than translate it back to your original image. Here is an example...

fill a boundary region with white colour

You can transform the contourns in a binary image, fill it and than translate it back to your original image. Here is an example...

16 jours ago | 1

| accepted

Answered

how to join highlighted points by curve in 3D

For you to join those points with a radius that will gradually increase you first need to define what exactly is "gradually incr...

how to join highlighted points by curve in 3D

For you to join those points with a radius that will gradually increase you first need to define what exactly is "gradually incr...

16 jours ago | 1

| accepted

Answered

How to create a sliding window function over column vector M

You can easily implement a loop for this A = [1,2,3,4,5,6]'; % Easy vector to verify output fun = @(x)mean(x); % Your function...

How to create a sliding window function over column vector M

You can easily implement a loop for this A = [1,2,3,4,5,6]'; % Easy vector to verify output fun = @(x)mean(x); % Your function...

16 jours ago | 0

Answered

Chaotic number, Chaotic sequence.

What do you mean by chaotic number, random? If so have a look at the functions randn for normal distributed numbers and rand for...

Chaotic number, Chaotic sequence.

What do you mean by chaotic number, random? If so have a look at the functions randn for normal distributed numbers and rand for...

23 jours ago | 0

| accepted

Answered

any trick to stop fminsearch early?

Yes, there is, you can pass an output function and change the optimization state as soon as your error gets the threshold that y...

any trick to stop fminsearch early?

Yes, there is, you can pass an output function and change the optimization state as soon as your error gets the threshold that y...

23 jours ago | 1

| accepted

Answered

How to erode parts of an image

If you just have one image, doing a matlab code to find the borders would be an overkill, so it would be better to just check th...

How to erode parts of an image

If you just have one image, doing a matlab code to find the borders would be an overkill, so it would be better to just check th...

30 jours ago | 0

Answered

Repeat specific elements in vector with keeping the basic vector

repelem indeed solves your problem, you just have to give the repetition indexes as a element-wise argument and pass the whole v...

Repeat specific elements in vector with keeping the basic vector

repelem indeed solves your problem, you just have to give the repetition indexes as a element-wise argument and pass the whole v...

30 jours ago | 0

Answered

Shortest path through node group sets

If you have negative weightings an Algorithm that would work to find the shortest path is the Bellman-Ford. You can find some in...

Shortest path through node group sets

If you have negative weightings an Algorithm that would work to find the shortest path is the Bellman-Ford. You can find some in...

30 jours ago | 0

Answered

Another "unable to perform assignment because the indices on the left side are not compatible with the size of the right side" thread.

The problem is only about the indexing. When you do something like sV(k, c), you're actually getting a matrix with all possible ...

Another "unable to perform assignment because the indices on the left side are not compatible with the size of the right side" thread.

The problem is only about the indexing. When you do something like sV(k, c), you're actually getting a matrix with all possible ...

30 jours ago | 1

| accepted

Answered

Audio Recording on Matlab Issue

Your code is fine, those square signals are just because the low amount of bits in the default audiorecorder which is very low (...

Audio Recording on Matlab Issue

Your code is fine, those square signals are just because the low amount of bits in the default audiorecorder which is very low (...

30 jours ago | 0

Answered

Create a matrix that stores rows that are not from a random sample

The function ismember may be what you need to efficiently solve your problem: OriginalMatrix = randn(1020,9); RandomMatrixInde...

Create a matrix that stores rows that are not from a random sample

The function ismember may be what you need to efficiently solve your problem: OriginalMatrix = randn(1020,9); RandomMatrixInde...

30 jours ago | 0

Answered

List of paths between two points

It is not so clear by your list what underlying process you have, but I may assume you have a map (graph) where each point is a ...

List of paths between two points

It is not so clear by your list what underlying process you have, but I may assume you have a map (graph) where each point is a ...

30 jours ago | 0

Answered

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

You don't need to declare numerical values with syms your variable sum is the same as the function sum for matlab, this can cau...

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

You don't need to declare numerical values with syms your variable sum is the same as the function sum for matlab, this can cau...

30 jours ago | 0

| accepted

Answered

Selecting specific region around the known indices of a matrix.

You can dilate the image with a disk kernel and then take the difference to get the indexes: A = load('matlab.mat'); h = fsp...

Selecting specific region around the known indices of a matrix.

You can dilate the image with a disk kernel and then take the difference to get the indexes: A = load('matlab.mat'); h = fsp...

environ un mois ago | 0

| accepted

Answered

Can i find 'mean' of on column , based on second column ?

You can first find the index where columm 6 is one, save it in a vector and then use it as a mask for your first columm, in this...

Can i find 'mean' of on column , based on second column ?

You can first find the index where columm 6 is one, save it in a vector and then use it as a mask for your first columm, in this...

environ un mois ago | 0

Answered

Error. I want to plot this ode45 pressure versus time

There were some errors in your code: For ode45 you give numerical functions, not symbolic ones There were some variables that ...

Error. I want to plot this ode45 pressure versus time

There were some errors in your code: For ode45 you give numerical functions, not symbolic ones There were some variables that ...

environ un mois ago | 0

| accepted

Answered

How to find the maximum value for each 2 rows in an array?

If I understood right you want the maximum element-wise matrix entry between the two matrices that appear in your 3rd dimension ...

How to find the maximum value for each 2 rows in an array?

If I understood right you want the maximum element-wise matrix entry between the two matrices that appear in your 3rd dimension ...

environ un mois ago | 0

| accepted

Answered

How to plot boundary of an image from any given distance

Your input is just the image, so I can't check the solution in your exact data, but this should either way solve your problem or...

How to plot boundary of an image from any given distance

Your input is just the image, so I can't check the solution in your exact data, but this should either way solve your problem or...

environ un mois ago | 0

Answered

How to calculate correlation coefficients for each corresponding pixel of two images(of same dimensions)? I need the output also to be of same dimension.

I believe they used a slided window cross correlation, which is basically the same as if you use corr2 (which will give you just...

How to calculate correlation coefficients for each corresponding pixel of two images(of same dimensions)? I need the output also to be of same dimension.

I believe they used a slided window cross correlation, which is basically the same as if you use corr2 (which will give you just...

environ un mois ago | 0

| accepted

Answered

Adding a piecewise time dependent term in system of differential equation

The conditional statement idea is right, the problem was that you considered that the ode45 would evaluate your function only at...

Adding a piecewise time dependent term in system of differential equation

The conditional statement idea is right, the problem was that you considered that the ode45 would evaluate your function only at...

environ un mois ago | 2

| accepted

Answered

Using a For Loop to calculate the pi for a taylor series

You can do it in a way to test multiple n's at giving input, as for example "[10,100,1000]" as input: clear;clc; format Long ...

Using a For Loop to calculate the pi for a taylor series

You can do it in a way to test multiple n's at giving input, as for example "[10,100,1000]" as input: clear;clc; format Long ...

environ un mois ago | 1

Answered

Use reshape to image with 3 dims

A = randn(6000,28,28); newA = reshape(A,[28 28 6000]); size(newA) imshow(newA(:,:,1)) size(newA) ans = 28 ...

Use reshape to image with 3 dims

A = randn(6000,28,28); newA = reshape(A,[28 28 6000]); size(newA) imshow(newA(:,:,1)) size(newA) ans = 28 ...

environ un mois ago | 0