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Bob Whiley


Active since 2015

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Change color of different spheres
I have the following code to plot a sphere [x y z] = sphere; a=[loc ;radius]; a = transpose(a); surf(x*a(1,4)+a(1,1),y*a(1...

9 years ago | 2 answers | 0

2

answers

Question


Splitting an array and working on individual sections.
I have a large MxN array, M and N are both even, how can i split the array into 2x2 smaller arrays and perform operations on eac...

9 years ago | 1 answer | 0

1

answer

Question


Plot Coefficient Vector from Polyder
If I found the derivative coefficients of a polynomial using the polyder() function, is there away I can plot those coefficients...

9 years ago | 0 answers | 0

0

answers

Question


Change all indices of a word in a string to '*'.
What is the best method to change all indices of a certain word in a string to '*'. Like if my string were 'Hello, my name is...

9 years ago | 1 answer | 0

1

answer

Question


How can I add one character before each line of textfile?
How can I add one character before each line of textfile and output a new textfile with the changes made?

9 years ago | 1 answer | 0

1

answer

Question


While Loop column vector of strings
I am trying to make a column of names and a column of numbers given a .txt file. The names are always next to the number, with a...

10 years ago | 1 answer | 0

1

answer

Question


Cell Arrays to string
If I have a long cell array, say a 1x120 cell (its arbitrary), each containing a different word like 'the' in one, and 'or' in t...

10 years ago | 1 answer | 0

1

answer

Question


Compare .txt to a string.
How can you compare each line of a .txt file to a string?

10 years ago | 2 answers | 0

2

answers

Question


Read first letter of each line of a .txt file
Given an input .txt file, how can I extract the first letter of each line of that file. Ex: file.txt is I’ve worn a black...

10 years ago | 1 answer | 0

1

answer

Question


Evalaute a string left to right
Given an input string that represents a function (like 'f(x) = x^2 +2/2x+3') and a input value (like x=2), how can I evaluate so...

10 years ago | 1 answer | 0

1

answer

Answered
Fibonacci sequence, slightly different.
If he beginning number were 0, how could I make it so the first index in the output vector is 0, then the sequence continues nor...

10 years ago | 0

Question


Fibonacci sequence, slightly different.
I am trying to write a code for the fibonacci sequence, but instead of adding the the term to its previous one, I want a number ...

10 years ago | 4 answers | 0

4

answers

Question


Check for array equality?
How can I check if indices of three arrays are equal and make those indices all zero if they are equal.

10 years ago | 1 answer | 0

1

answer

Question


Replace NaN with corresponding elements in another array.
I can find the locations of all the NaNs in an array, but how can I replace those elements with the corresponding elements of an...

10 years ago | 1 answer | 1

1

answer

Question


Test multiple vectors for eqaulity.
If given an x amount of logical vectors, where all the logicals are the same in each vector, except 1 vector that may have one (...

10 years ago | 0 answers | 0

0

answers

Question


Combine three logical statements.
I am trying to find if a certain string meets three specific requirements. I know how to test for each requirement individually,...

10 years ago | 0 answers | 0

0

answers

Question


Search for elements in a string
I am trying to find whether a certain string of letters and special characters ( like /) and then output true if it does and fal...

10 years ago | 6 answers | 0

6

answers