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David Hill


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4,173 total contributions since 2017

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Solved


Solve an ODE: equation A

3 days 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...

3 days ago | 0

| accepted

Solved


List Proth primes

3 days ago

Solved


Flip coins

3 days 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');

3 days 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...

3 days ago | 1

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

3 days 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))...

3 days ago | 0

| accepted

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...

10 days ago | 0

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

10 days ago | 0

| accepted

Solved


Determine if input is even

11 days ago

Solved


Add 100

11 days 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...

11 days 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 ...

12 days ago | 0

| accepted

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.

13 days ago

Solved


Close MATLAB with keyboard
Close MATLAB with keyboard without using mouse

13 days 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 &#...

13 days ago

Solved


The shortest man in the world

13 days ago

Answered
How to show the iterations and the answers and the graph
Why not use a while loop? m = 68.1; g = 9.81; t = 10; v = 40; f =@(c) (g*m*(1-(exp((-c*t)/m)))/c)-v; err = 1e-10; c = 0.1...

14 days ago | 0

Answered
Not seeing second plot data
theta = 0:0.02:1; y = sin(theta); plot(theta, y, theta, 1- (theta - y)./y);%need ./ also to keep it the same scale chose 1 ins...

14 days ago | 1

Solved


Highest building

15 days ago

Solved


Normalizing a vector

15 days ago

Solved


Min-Max digit

15 days ago

Solved


Similar triangles

15 days ago

Solved


End Digits

15 days ago

Solved


Do you have the minimum age?

15 days ago

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