Stephen23

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Risposto
f(x)=x²+2.000 syntax code
f = @(x) x.^2 + 2; fplot(f)

7 giorni fa | 0

Risposto
Plotting 'HH:MM' format times against the X axis
"taking my times (zero to 23:50 in ten minute incriments) and converting to decimal then 'HH:MM' format" Do not convert to "dec...

7 giorni fa | 0

Risposto
How to process excel data with Chinese dates
"How to process excel data with Chinese dates" It is a CSV file (i.e. text), not a proprietary Excel file. fnm = '日期.csv'; ty...

9 giorni fa | 0

Risposto
Return largest number of decimal places in a vector of numbers
x = [0.123456789,0.1,0.12,0.123]; n = strlength(compose("%.15g",rem(abs(x),1)))-2

11 giorni fa | 1

Risposto
Mix two different size arrays
A = rand(1,3) B = rand(1,7) N = min(numel(A),numel(B)); C = [reshape([A(1:N);B(1:N)],1,[]),A(N+1:end),B(N+1:end)]

11 giorni fa | 0

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Risposto
Split increasing vector into n unqueal parts based on multiples of n
S = load('Denc.mat'); D = S.Denc B = 0:2300:2300+max(D) X = discretize(D,B); C = accumarray(X,D,[],@(a){a})

12 giorni fa | 0

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Risposto
How to take a value between two values
d = [11,15,21]; X = [10.2,13.5,20,22.4]; Y = [1.6,1.8,2,Inf]; Z = interp1(X,Y,d, 'previous')

15 giorni fa | 0

Risposto
How to change the default color order for all figures?
M = rand(5,7); plot(M) newcolors = [0.83,0.14,0.14; 1,0.54,0; 0.47,0.25,0.8; 0.25,0.8,0.54]; set(groot, "defaultaxescolororde...

16 giorni fa | 1

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Risposto
how to assign rank to each row?
A = [1,4;1,4;4,1;4,1;2,2;2,3;2,3;3,2;3,3] B = cumsum([1;any(diff(A,1,1),2)])

17 giorni fa | 0

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Risposto
Which character conversion notation do I have to use?
T = readtable('ct4004355_si_003.txt', 'Delimiter','\t', 'TextType','string')

17 giorni fa | 0

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Risposto
Keep matrix structure after indexing
out = nan(size(temp)); out(A) = temp(A); Or out = temp; out(~A) = NaN;

17 giorni fa | 1

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Risposto
Error replacing content of timetable with cell array
Note that storing lots of scalar string arrays inside a cell array is inefficient and misses out on the benefits of using string...

17 giorni fa | 0

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Risposto
Defining boundaries of a curve
S = load('HistogramData.mat') P = 8e-4; % prominence D1 = diff([false;S.Dat1(:,2)>P;false]); D2 = diff([false;S.Dat2(:,2)>P;f...

17 giorni fa | 0

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Risposto
BSXFUN Non-singleton dimensions of the two input arrays must match each other
"That should be multiplied by the first row of SV:" I am guessing that you want to repeat SV so that it has as many rows as NED...

18 giorni fa | 1

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Risposto
Loading file and storing variable name as double in .mlx file
To write robust code you should always LOAD into an output variable. Doing so also makes your task easier: C = struct2cell(load...

19 giorni fa | 0

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Risposto
Transform double to char with one or two decimal places
You could use another format, e.g.: fprintf('%.3g\n',[3.15,3.7])

19 giorni fa | 1

Risposto
Argument validation for cell arrays?
"that the argument must be a cell array of three-vectors." You can easily write your own argument validation function: https:/...

22 giorni fa | 1

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Risposto
extract all rows of a matrix except 'r' (vector) rows
The most efficient approach: matrix = [54; 55; 56; 57; 58; 59; 60; 61; 62; 63; 64; 65]; r = [1; 2; 3; 4; 9]; matrix_out = mat...

22 giorni fa | 0

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Risposto
Averaging a curve with itself
S = load('test.mat'); Xraw = S.cx; Yraw = S.c; [Xmin,Imin] = min(Xraw); [Xmax,Imax] = max(Xraw); I1 = Imin:Imax; I2 = [I...

22 giorni fa | 0

Risposto
Operation with logical data. Which is better?
n = 5; a = [1,9,0,2,3]; b = a<n & a

24 giorni fa | 0

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Risposto
Can I create cells inside cells in for loop?
Brute force naive approach: P = perms(1:9) C = {1:3,4:6,7:9}; B = true; for k = 1:numel(C) V = C{k}; [X,~] = find(...

24 giorni fa | 0

Risposto
Writing functions f(x,y)
fh1 = @(x,y) 4*(x-1).^2 + 3*(y-2).^2 + 2*(x-2).^2.*(y-3).^2; fh2 = @(v) fh1(v(1),v(2)); % function with one input sol = fminse...

25 giorni fa | 1

Risposto
I would like to merge two different column in one as datetime
% Fake data: A = ones(5,1) B = {'0:00';'0:05';'0:10';'0:15';'0:20'} % Convert to DURATION: M = str2double(split(B,':')); D ...

circa un mese fa | 0

Risposto
How to solve error "access denied" when using mkdir?
Explanation: The basic problem is that you are calling MKDIR using command syntax (not function syntax), but are expecting to p...

circa un mese fa | 0

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Risposto
Faster indexing from Matfiles with similar names
"What I meant when I said I had 5 matfiles called m1 to m5 is that m1 - m5 were matfile-type variables obtained by calling the m...

circa un mese fa | 0

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Risposto
Common Elements in Two 2D Arrays
A = [1,2,3,4,5,6; 3,1,2,4,5,7] B = [1,1,3,5,6,7; 3,1,2,4,5,7] Method one: ALL and indexing: X = all(A==B,1); C = A(:,X) Met...

circa un mese fa | 1

Risposto
In what situations do we need to use the `empty` method? What benefits does the `empty` method provide?
"In what situations do we need to use the `empty` method?" Whenever you want to create an empty array of a certain class. Certa...

circa un mese fa | 1

Risposto
Reading file names from a certain directory into a cell array to compare it with a different cell array
"I know how to do the comparisson just not how to get the filesnames from the directory" Use DIR: https://www.mathworks.com/he...

circa un mese fa | 1

Risposto
How to identify blocks in a diagonal block matrix?
This is not very pretty, but it gets the job done. Note for simplicity it only handles square matrices and assumes square, non-o...

circa un mese fa | 1

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Risposto
Table Multiplication error: Both tables must have the same variables
One simple solution is to use curly braces to access table content (not parentheses which return another table): SAI{:,1} .*SAI...

circa un mese fa | 1

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