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# Allen

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400 total contributions since 2017

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Set negative values to zero in just one column of tables in 1 x 71 cell
Assuming that each table contains a variable name of 'rrr24', then the following should work. for i=1:length(C) C{i}{C{i}{...

4 hours ago | 0

Question

How to split a string of digits into groups of three from right-to-left using only regular expressions?
While I have been able to accomplish this task using a varitey of mixed functions such as regexp() and fliplr(), I am ultimately...

3 days ago | 1 answer | 1

### 1

How can I invoke a function from within App Designer when using a DeleteFcn or CloseRequestFcn from a MATLAB figure that is separate from the App GUI?
Ended up solving the problem myself by using a State Button to change the KeyPressFcn for the UIFigure. It requires a little tri...

3 days ago | 0

| accepted

Access .txt and .csv, edit data, error statistics
A basic method for importing only the Temp and RH data into tables filename = 'Airport.csv'; opts = detectImportOptions(filena...

3 days ago | 0

| accepted

Error using subplot (line 332) Index exceeds number of subplots.
x=[-3:0.01:3]; y=1/4*ones(size(x)); for n=1:40 ao=(1/6); an=((-1)^n)/(n^2*pi^2); bn=-(-1)^n/(n*pi)-(2)/(n^3*pi^...

3 days ago | 0

Solved

Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

3 days ago

Solved

Polarisation
You have n polarising filters stacked one on top of another, and you know each axis angle. How much light gets passed through th...

3 days ago

Solved

Pi Digit Probability
Assume that the next digit of pi constant is determined by the historical digit distribution. What is the probability of next di...

3 days ago

Solved

The glass half full
Identical glasses are placed in a triangular tower structure, such that the top level (L = 1) comprises one glass, the next leve...

3 days ago

Solved

Is it really a 5?
A number containing at least one five will be passed to your function, which must return true or false depending upon whether th...

3 days ago

How to change ASCII values?
I simple way of converting characters values or character vectors to apply a numerical calculation directly to the characters. ...

3 days ago | 0

Plot using while loop
Sami is correct that you are running n to a higher value than the total number of elements in r. I better way to approach this p...

3 days ago | 0

Compiled version not working because of path
If you are certain that the image you are looking for is always going to be on the Desktop and your OS is Win10, you can try the...

4 days ago | 1

| accepted

another way to break without using the command 'break'
To stop the while loop you need to make sure that none of the conditions are met, else it will keep running. By changing || to &...

4 days ago | 0

| accepted

Problem with Toggling Invisibility of Edit Text Box
With App Designer you need to look at the Object's value property as you are doing. However, it will return a logical value. If ...

4 days ago | 0

| accepted

Solved

5 Prime Numbers
Your function will be given lower and upper integer bounds. Your task is to return a vector containing the first five prime numb...

5 days ago

Solved

Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

6 days ago

Solved

Basic electricity in a dry situation
&#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#...

6 days ago

Solved

Kryptos - CIA Cypher Sculpture: Vignere Decryption
The <http://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture> contains four encypted messages. This Challenge is to Decrypt tw...

7 days ago

Solved

Kryptos - CIA Cypher Sculpture: Vigenere Encryption
The <http://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture> contains four encypted messages. This Challenge is to Encrypt tw...

7 days ago

Solved

Mean and standard deviation of times in string
Input(t) - cell of strings with times in format 'min:sec.ms' Output([m, s]) - two strings with mean and standard deviation wi...

7 days ago

Solved

Generate a melodic contour string matrix
<http://en.wikipedia.org/wiki/Parsons_code Parsons code> is a surprisingly effective way to identify music by its melodic motion...

8 days ago

Solved

Make a list string
Given a cell string, produce a string separating the items with spaces and commas and with an 'and' preceding the final item, an...

8 days ago

Solved

Backslang, odds are you used it at some point in time...
So backslang is a language that can be used to communicate in an easy decode code, if people know the rules of decoding it. Wel...

8 days ago

Solved

NO _________ ALLOWED....
So you're given a sentence where if there is a particular word in the sentence then the output is 1, if it is not there then the...

8 days ago

Solved

ABBREVIATION
Abbreviate the given string. Consider Only Capital Letters. EXAMPLE If input is 'Abbreviation of The Given String' then ou...

8 days ago

Solved

Convert Two Character String into a Binary Vector
Given a string "XOXXO" convert it into a binary vector. [1 0 1 1 0] Paul Berglund implemented an optimal method in <http://ww...

8 days ago

Solved

Is the paranthesis sequence balanced ?
Quantum mechanics and computer science are interested in <http://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation bra-kets>. Today...

8 days ago

Solved

Count letters occurence in text, specific to words with a given length.
Build a function with two input arguments: a string and a word length (number of letters), that outputs a vector of counts of th...

8 days ago

Solved

Simple Caesar Cypher - shift encrypt a message given an index number
A Caesar cypher is a simple shift encryption method. Your goal is to create a function that allows a user to input a string and ...

8 days ago