David Hill

Last seen: 1 day ago

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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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

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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

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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

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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

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Beat the RNG - Passwords

2 days ago

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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

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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

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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

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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

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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

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

2 days ago

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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
If for example, I have the letter 'a' in table punnettSquare(2,1) and I want to add a letter 'b' to that same cell so that the element of the cell would be 'ab'. What function should I use?
punnettSquare{2}{1}='ab';

3 days ago | 0

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

3 days ago | 0

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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

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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

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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

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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

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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

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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