Community Profile

photo

David Hill


Last seen: Today
4.063 total contributions since 2017

Contact

David Hill's Badges

  • Revival Level 2
  • 12 Month Streak
  • Guiding Light
  • Number Manipulation II Master
  • Draw Letters
  • Cody Problems in Japanese Master
  • 5-Star Galaxy Level 3
  • Personal Best Downloads Level 3
  • First Review
  • Cody Challenge Master
  • Computational Geometry I Master
  • Famous
  • Matrix Manipulation I Master
  • Indexing II Master
  • Sequences And Series III Master

View all

Contributions in
View by

Answered
for loop outsite functions
Can't you just put the loop in your pushbutton function and pass the loop variable to your other functions? function Messungsta...

circa 20 ore ago | 0

Answered
Deleting every n rows in matrix
newMatrix=oldMatrix(1:15:end,:);

circa 21 ore ago | 1

Answered
Only saving last run for loop
pie(1)=0; for i=1: 560; z=z+dz; pie(i+1)=pie(i)-((g/(cp*thetav(z)))*z); end

3 giorni ago | 1

| accepted

Answered
implement the A matrix using for loop
Why do you need a for-loop? Looks like you have the idea. A=zeros(2*length(x),6); A(1:2:end,1)=x; A(1:2:end,2)=y; A(1:2:end,...

5 giorni ago | 0

| accepted

Answered
Creating a histogram,
Use histogram(), the matlab documentation is quite good. https://www.mathworks.com/help/matlab/ref/matlab.graphics.chart.primit...

5 giorni ago | 0

Answered
Indexing a value from other cell arrays into a new column
for k=1:size(distances,1) a=flip(indeces(distances(k,1),:)); distances(k,3)=arrays(a(1),a(2)); end

6 giorni ago | 0

| accepted

Answered
Defining an anonymous function with 3*(N+1) variables
f=prod(exp(-beta*(diff(x(1:n+1)).^2+diff(x(n+2:2*n+2)).^2+diff(x(2*n+3:3*n+3)).^2)))*sum((x(1:n+1)-x(1:n+1)').^2+(x(n+2:2*n+2)-x...

6 giorni ago | 0

| accepted

Answered
line 15 does not work
If you inspect your variables before plotting, you will find that y is a single column. plot(t,y,'-');%this will work in your c...

6 giorni ago | 0

| accepted

Solved


Find the Pattern 9

6 giorni ago

Answered
How to solve an elliptical integral with the unknown in the integrand?
If you plot for C=0:100, you find that bcInt never exceeds 1. Re = 100; alpha = 15/360*2*pi; x=0:100; bc = @(f, C) 1./(((1-f...

7 giorni ago | 1

Answered
How to add numeric values to cell array?
for k=1:length(names) names{k}=[names{k},' ',num2str(val(k))]; end

7 giorni ago | 0

Answered
How to store words and numbers table in an array
Why not set up a struct? s = struct('a',{},'b',{},'c',{});%label the fields to whatever you want for k=1:11 s(k).a=%'Buildi...

7 giorni ago | 0

Answered
how to use fzero function?
First, fzero finds roots of nonlinear functions and should not be symbolic. If you have a polynomial you should use roots() func...

7 giorni ago | 0

Answered
How to "invert" integral function?
I might not understand your question completely. If you know the temperature and interested wavelength range, the curve can be g...

7 giorni ago | 1

Answered
How to stop rounding values when i use array?
The values in your array (a) are not rounded, they are only rounded in the display of them. To see the actual values, change for...

7 giorni ago | 0

Answered
convert image matrix to row vector
yourMatrix(:)';

7 giorni ago | 0

Solved


Consecutive Equation Times (of the day)
Many times throughout the day can represent mathematical equations. In this problem, we focus on the largest consecutive run of ...

8 giorni ago

Solved


Equation Times (of the day)
Many times throughout the day can represent mathematical equations. In this problem, we focus on times that include the four bas...

8 giorni ago

Solved


Draw Letter 'L'

8 giorni ago

Solved


center of mass
R is a given matrix with size [n,2]. R(i,:) is interpreted as the 2D-position of a mass point with mass i. Calculate the center ...

8 giorni ago

Solved


Bernoulli's Equation
Bernoulli's equation states that for an incompressible fluid the following summation is constant across the flow: v^2/2 + g*z + ...

8 giorni ago

Answered
Trying to solve a four variable equation for a range of values
If you want all possible combinations, then use ndgrid. Z0=1.5; Fmin=0:10; Rn=1:20; gammas=-10:1; gammopt=13:.1:20;%I have ...

8 giorni ago | 0

Answered
How write closed interval inside loop
You should just make g1, g2, and g3 matrices. No loop is necessary. g1=[l1',m1'-2*v1',m1'+3*v1',2*u1']; g2=[l2',m2'-4*v2',m2'+...

9 giorni ago | 0

| accepted

Solved


Number Puzzle - 108

9 giorni ago

Solved


Number Puzzle - 107

9 giorni ago

Solved


Number Puzzle - 106

9 giorni ago

Solved


Number Puzzle - 105

9 giorni ago

Answered
errors using Numerical Integration
y = @(x) 1./(sqrt(1+x.^4)); %just need a dot (./) a = -1; b = 1; S_int = integral(y,a,b);

9 giorni ago | 0

Load more