David Hill
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3.776 total contributions since 2017David Hill's Badges
Answer 3 questions that were unanswered for more than 30 days
Awarded to David Hill on 11 Jan 2021
Contribute at least one answer each month for 12 consecutive months
Awarded to David Hill on 02 Aug 2020
Solve all the problems in Cody Challenge
Awarded to David Hill on 24 Feb 2021
Solve all the problems in Computation Geometry I
Awarded to David Hill on 24 Feb 2021
Receive 25 likes on a problem you have created
Awarded to David Hill on 09 Nov 2020
Your submissions received 5 five star ratings
Awarded to David Hill on 16 Sep 2020
Your submissions were downloaded 100 or more times in a month
Awarded to David Hill on 03 Mar 2020
Publish your first comment or rating
Awarded to David Hill on 09 Oct 2019
Solve all the problems in Matrix Manipulation I
Awarded to David Hill on 30 Oct 2020
Solve all the problems in Indexing II
Awarded to David Hill on 19 Mar 2020
Solve all the problems in Sequences & Series III
Awarded to David Hill on 14 Feb 2020
100 of your answers have been accepted
Awarded to David Hill on 16 Jan 2020
Create 10 problems
Awarded to David Hill on 20 Oct 2019
Solve 500 problems
Awarded to David Hill on 11 Oct 2019
While loop for Taylor Series to approximate e^2.7
n = 0; diff=1; x=2.7; while (diff>= 1e-6) terms(n+1) = (x^(n)/factorial(n)); Exp = sum(terms); n=n+1; diff = abs((exp(2...
3 Tage ago | 1
Two part question: Labeling a row in a matrix and finding certain values
Normally, you should not establish new variables but just index. DraftMatrix = [1:20;randi([50,90],1,20);randi([0,8],1,20)]; a...
3 Tage ago | 0
How to generate a list of random ID which can later be used instead of participant name?
Yes, a strictly numerical format would be much easier. a=[randperm(10,2)+47;randperm(26,2)+96]; a=char(a(:)');
3 Tage ago | 0
make input positive mandatory
while 1 a=input('Please input a postive integer'); if isequal(a,floor(a))&&a>0 break; end display('...
3 Tage ago | 0
| accepted
How do I make my vector save characters?
v = 7000; ii = 1; while (v > 16) a = rem(v,16); v = floor(v/16); switch a case 10 z = 'A'; case 11 ...
3 Tage ago | 1
| accepted
How to run utm2deg function?
Did you try the file exchange utm2deg() function? https://www.mathworks.com/matlabcentral/fileexchange/10914-utm2deg?s_tid=srch...
3 Tage ago | 0
Return to input when 'error'
prompt = 'Please key in your desireable SOC: '; while 1 EV_Matrix(no_car,9) = input(prompt); if EV_Matrix(no_car,9) >...
3 Tage ago | 0
loops performed on table
idx=TT.Angle>=0&TT.Angle<90; TT.theta(idx)=TT.Angle(idx); TT.yspeed(idx)=TT.Speed(idx).*cosd(TT.theta(idx)); TT.xspeed(idx)=T...
3 Tage ago | 0
Plot the Relative Error
V = [10 20 30 40 50 60 70 80]; v=10:.1:80; f=@(x).2741*x.^1.9842; F_D = [25 70 380 550 610 1220 830 1450]; plot(V,F_D,v,f(v)...
4 Tage ago | 1
| accepted
Create a matrix with non zero entries on the diagonal and subdiagonal and zero elsewhere
eye(4)+diag([2 2 2],1);
4 Tage ago | 0
Unable to perform assignment because the left and right sides have a different number of elements
t = (0:.2:50); V = zeros(length(t)); for i=1:length(t) if 0 <= t(i)&&t(i) <= 8 V(i) = 10*t(i)^2-5*t(i); elseif ...
4 Tage ago | 1
Trouble with saving outer loop values
A = [12 4; 1, 25; 4,19]; B = [90, 85; 60, 50; 90,40]; maxval=[]; for w = 1:5 for r = 1...
4 Tage ago | 0
| accepted
I'm a beginner in matlab. I would like to plot a function as function in frequency..
f=1:100e6; capacity=(@f) ;%you need to describe your equation better. The sum*sum is confusing and the size of each variable sh...
4 Tage ago | 0
| accepted
Recursive Function - Bisection
Your problem is with your function. E=1; D=5; Re=1; f=@(x)-1./sqrt(x)-2.*log10(((E/D)/3.7)+2.51./(Re*sqrt(x)));%is this the ...
6 Tage ago | 0
Assigning NaN to certain values
You might try rounding to 4 decimal places first Temp=round(Temp,4); Temp(ismember(Temp,[-177.6600, -177.6500, -177.6300, -177...
6 Tage ago | 0
| accepted
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