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David Hill


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2,167 total contributions since 2017

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Answered
How to find the closest value between a matrix and a vector and print out its index?
You mean something like this? I=[]; for k=1:length(v) [~,idx]=min(abs(m-v(k)),[],'all','linear'); I=[I,idx]; end

1 day ago | 0

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Answered
creating a specific markov probability matrix
If you use linear indexing (iaw Matlab), then the bottom left vertix of your graph is 8 and the top right vertix is 57. Then the...

1 day ago | 0

| accepted

Answered
Undefined function 'mtimes' for input arguments of type 'function_handle'.
c = [.01; 1]; x = 0:10:100; tbolt1 = [0.165,1.85,2.87,3.78,4.65,5.5,6.32,7.14,7.96,8.79,9.69]; t0 = tbolt1(1); te = tbolt1(...

1 day ago | 1

Answered
For loop not showing plot?
I answered your previous question also. This is the same answer. No loop is needed. Your override error on each loop to a single...

1 day ago | 0

Solved


Justify the character string in center with proportional fonts
how to justify a string of character into center with proportional fonts? Example: x='justify string ' output is ' justif...

2 days ago

Solved


Solve The Equation
The coefficients of a system of equations are given in two vectors, x1 and x2. Write a function to solve the equation and return...

2 days ago

Solved


Find The Difference
Vector x is given.calculate the difference between the biggest and the smallest number that we can create from elements of x. f...

2 days ago

Solved


Add 3 (x<=100) Or Subtract 100 and add 3(100<x)
Add 3 to every element. However, if the value is greater than 100, subtract 100 and add 3. eg. input x = [45 106; 67 1...

2 days ago

Solved


Beat the RNG - Passwords

2 days ago

Solved


A kind of decryption
Please convert the vector to letters by referring to the examples below. (eg.1) input vec=[34 1 59] >>> output s='A Z' (eg...

2 days ago

Solved


Sort complex numbers into complex conjugate pairs
Sort complex numbers into complex conjugate pairs. Example: Input x = [3-6i -1-4i -1+4i 3+6i] Sorted output = [-1 - ...

2 days ago

Solved


Construct a string from letters and counts
Given two input arrays like this: [5,3,1] ['a','b','c'] Output a string that contains each letter the specified num...

2 days ago

Solved


Snakes on a plane
Given the dimensions of a 2-d plane, create a matrix where a "snake" of ones occupies the plane from top left to bottom right. ...

2 days ago

Solved


Four digit number ABCD reversal
write a MATLAB function to find the four-digit number ABCD when multiplied by 4 returns DCBA. The function takes an input x=4.

2 days ago

Solved


How many apple
You have x apples I take from you y apples now how many apples you have ?

2 days ago

Solved


Convert base 10 to base x (2-16)
Convert input number(s) (double) in base 10 to base x (2 through 16). Output should be a cell of character arrays. Compute outpu...

2 days ago

Answered
Need help in creating a script without using for loops.
N=length(x); Xk=sum(x.*exp((-1i*2*pi/N*(0:N-1)).*(0:N-1)'),2);

3 days ago | 0

Answered
How to make a loop that would help me with my code?
c=b(p);

3 days ago | 1

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Answered
Can we put all of these str2num in one function?
sum(C1-'0');

3 days ago | 0

Answered
No values in plot?
Not sure what you were doing, but each loop iteration you were overriding your data. No loop needed. My_numb_1=1:50; My_numb_2...

3 days ago | 0

Answered
Detect consecutive positive numbers in an array
A(A<0)=0;%if negative numbers possible A(A>9)=9;%if >single digit possible a=num2str(A); a=a(a~=' '); B=[regexp(a,'[1-9]*')'...

3 days ago | 1

| accepted

Solved


Finding fourier transform of a given vector
Find the fourier transform of a given input vector for ex a=[1 2 3 4] then y=[ 10.0000 + 0.0000i -2.0000 +...

3 days ago

Solved


replace empty matrices with '[]'
for example a=1;a(:,1)=[]; returns a = Empty matrix: 1-by-0 use this as the input,and the output should be '[]...

3 days ago

Solved


Min by mean
Substitute the minimum value in each row of a matrix A by the mean of that row (it should also work if the input is a vector)

3 days ago

Solved


Accessing value of variable whose name is stored in another variable as string.
Accessing value of variable whose name is stored in another variable as string. for example: var1=n; var2='var1'; %Assigning...

3 days ago

Solved


given number is power of n or not?
Check weather The input is power of n or not? for example x=8,n=2 --> true x=6,n=2 --> false

3 days ago

Answered
For Loop Using the Previous Calculated Term for Each Iteration
t=0:60:900 rate_NaCl(1)=r_NaCl; for k=2:length(t)-1 rate_NaCl(k)=sqrt(rate_NaCl(k-1)^2 + 2*rdrdt_NaCl*t(k)); end plot(t...

3 days ago | 1

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Answered
Adding to an array within a For loop?
No loop needed. gpa4=nnz(data(:,3) == 4); class_honors=nnz(data(:,2) == 2015 & data(:,3) >= 3.5); class_psych=nnz(data(:,2) =...

3 days ago | 0

Answered
How to plot the values found in a for loop?
Are X, Ex, Ey, Gamxy constants not listed? Recommned executing without loop; otherwise you need to index Ebca/Ebcb/Ebcc. Current...

3 days ago | 0

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