# Lucademicus

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**Content Feed**

How to configure Editor when working on class methods so that I can jump to implementation?

I'm not sure if I correctly interpret your question, but I think I noticed the following behavior. When I type instanceOfC...

9 months ago | 0

how to select the second maximum value for an array.

One way would be to sort the array and take the value of the second to last value. [a,b] = sort(A); maximum = A(b(end-1)); Th...

2 years ago | 0

Unable to read strings (I get NaN) in the excel file imported into Matlab

I have made an Excel file with a column containing numbers and strings. The result of importing depends on what data you tell...

2 years ago | 0

"Quality" property of VideoWriter object doesn't do anything. How to get higher quality mp4 video?

A solution would be to write the video as uncompressed avi, and invoke ffmpeg to compress it to mp4. I've tested this code in...

2 years ago | 0

| accepted

how to exclude or skip numbers in a for loop

You should take a look at the function ismember skipNum = [3147,3148,9319,9320]; for i = 1:12951; if ~ismember(i,skipNum) ...

2 years ago | 1

| accepted

Question

Calling a function defined in a m-file from within appdesigner app, with the app object as function input

I'm using R2019b. I have created a GUI app using appdesigner and have written the function testFun in a m-file (testFun should ...

2 years ago | 1 answer | 0

### 1

answerHow can I write different subscription font type of label?

You can achieve that by using a underscore _, following what you'd want subscripted. You can group something by placing it withi...

2 years ago | 1

| accepted

How to run Matlab on WSL (Ubuntu 16.04)?

The folder you're referring to is within the bin folder. Probably the full path is: /usr/local/MATLAB/Rversionnumber/bin, in whi...

2 years ago | 0

Question

Deployed application with/without command prompt, depending on input arguments

Hello, I am using R2019b to deploy an application. Intented behavior The application starts a GUI if it is called without inp...

2 years ago | 0 answers | 0

### 0

answersSolved

Summing digits

Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

2 years ago

Solved

Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

2 years ago

Solved

Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

2 years ago

Solved

Remove the vowels

Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

2 years ago

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Swap the first and last columns

Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

2 years ago

Solved

Bullseye Matrix

Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

2 years ago

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Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

2 years ago

Solved

Find the numeric mean of the prime numbers in a matrix.

There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

2 years ago

Solved

Remove all the consonants

Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

2 years ago

Solved

Fibonacci sequence

Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

2 years ago

Solved

Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

2 years ago

Solved

Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

2 years ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

2 years ago

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

2 years ago

Solved

Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

2 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

2 years 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...

2 years ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

2 years ago

Hello guys can u help me to add vertical line on my probability density function, this is my code x=[-5:0.1:5]; a=normpdf(x,1,1); z=normpdf(x,3,2); plot(x,a,'b',x,z,'r') legend('normal signal','abnormal signal') ylabel('probability density function')

From release 2018b you could use the function xline

2 years ago | 0

Euler's approximation for ODE

for i >= 0.05 This is not the correct way to define a for-loop. See the documentation for the correct syntax: https://mathwo...

2 years ago | 0