David Hill

Last seen: Today

4 182 total contributions since 2017

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Answered
Defining a simple function with text/string 'on'
function darkmode(a) gca; if a ans.GridColor = [1, 1, 1]; set(ans,'color','k'); else ans.GridColor = [.15,.15,...

environ 10 heures ago | 0

Answered
Average of 2 columns within a 3 column matrix
for k=1:60 x(k)=mean(X(:,:,k),'all','omitnan'); end

1 jour ago | 0

Solved

Solve an ODE: equation B

1 jour ago

Solved

Redefine the Array if the Elements in the Array are Repeating

1 jour ago

Solved

Write a function to generate AND operation

1 jour ago

Solved

Make the first letter of a sentence Capital.

1 jour ago

Solved

Make a Number From the First and Last Digit of an Input Number

1 jour ago

Answered
Bessel function. Determining the roots.
Looks like file exchange has a good zero finder for Bessel functions. https://www.mathworks.com/matlabcentral/fileexchange/4840...

1 jour ago | 0

Answered
I want to calculate each v value from each diameter value, then the value of Re one by one, and for all the calculations in the for loop,but this code give me single value for v, Re, f . Where am I doing wrong? Sorry I'm beginner in mtlab.
No loop needed. L=(2000+(5*50)); T=5+5*0.25; It=0.0075*L; ht=0.15*T; bt=0.50*It; e=0.0003*(5+50); t=15000/sqrt(9.81/ht); ...

1 jour ago | 0

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Solved

Solve an ODE: equation A

5 jours ago

Answered
Why is histcount ignoring one of the edge values in my matrix?
a=readmatrix('GPeak_Histogram_Data.txt'); Aedges = unique(a(:,2)); Acounts = histc(a(:,2), Aedges);%use histc or a=readmatr...

5 jours ago | 0

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Solved

Find all the indices when a value repetition occurs

5 jours ago

Solved

List Proth primes

5 jours ago

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Flip coins

5 jours ago

Answered
pad matrix to a particular size
assuming m and n are both even. M_resized=padarray(M,[(150-size(M,1))/2 (150-size(M,2))/2],0,'both');

5 jours ago | 1

Answered
How to evaluate a function that has been saved to a variable
syms x; f = 2*tanh(x/2); d1 = diff(f); d2 = diff(f,2); d3 = diff(f,3); fplot(f,[-1,1]); hold on; fplot(d1,[-1,1]); fplot...

5 jours ago | 1

Answered
How to reconstruct a matrix?
z=diag([y;0]); z(end,:)=x(1:length(z)); z(:,end)=x(1:length(z));

5 jours ago | 1

Answered
Generating adjacency matrix for following network
Graph has to be a polygon. numNodes=6; a=randperm(numNodes); b=circshift(a,1); g=graph(a,b); plot(g); m=full(adjacency(g))...

5 jours ago | 0

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Solved

Convert any case sentence to Title Case

8 jours ago

Solved

Iterate the sum of divisors and totient

8 jours ago

Answered
New to matlab. Trying to make a script to reorganize excel data
a=readcell('yourcellname'); b=unique(a(:,2)); newCell=b'; for k=1:length(b) newCell(2,k)={a(ismember(a(:,2),b{k}),1)}; en...

12 jours ago | 0

Answered
Relative Ranking of position in an array
If a is your matrix above. sum(find(a==1)-find(a==2)<0);

12 jours ago | 0

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Solved

Determine if input is even

13 jours ago

Solved

Add 100

13 jours ago

Answered
Need helping in setting a for loop for the below code
u=unique(condIds,'stable');%not sure if you only want to go through the unique entries; otherwise, you will have duplicates for...

14 jours ago | 0

Answered
Rerun script with different table input
You should always attempt to index. Put all your tables into a single cell array. t{1}=table1; t{2}=table2; %then index into ...

14 jours ago | 0

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Solved

Cannon Ball
Given g (acceleration due to gravity) and desired altitude x, find the minimum ground velocity of a cannon ball to reach x.

15 jours ago

Solved

Close MATLAB with keyboard
Close MATLAB with keyboard without using mouse

15 jours ago

Solved

Basic electricity in a dry situation
&#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#...

15 jours ago

Solved

The shortest man in the world

15 jours ago