Stephen23

2014 年からアクティブ

Suspensa Vix Via Fit

統計

All

バッジを表示

Content Feed

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

4日前 | 0

回答済み
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...

4日前 | 0

回答済み
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...

6日前 | 0

回答済み
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

8日前 | 1

回答済み
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)]

8日前 | 0

| 採用済み

回答済み
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})

9日前 | 0

| 採用済み

回答済み
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')

12日前 | 0

回答済み
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...

13日前 | 1

| 採用済み

回答済み
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)])

14日前 | 0

| 採用済み

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

14日前 | 0

| 採用済み

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

14日前 | 1

| 採用済み

回答済み
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...

14日前 | 0

| 採用済み

回答済み
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...

14日前 | 0

| 採用済み

回答済み
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...

15日前 | 1

| 採用済み

回答済み
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...

16日前 | 0

| 採用済み

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

16日前 | 1

回答済み
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:/...

19日前 | 1

| 採用済み

回答済み
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...

19日前 | 0

| 採用済み

回答済み
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...

19日前 | 0

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

21日前 | 0

| 採用済み

回答済み
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(...

21日前 | 0

回答済み
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...

22日前 | 1

回答済み
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 ...

29日前 | 0

回答済み
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...

29日前 | 0

| 採用済み

回答済み
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...

29日前 | 0

| 採用済み

回答済み
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...

約1ヶ月前 | 1

回答済み
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...

約1ヶ月前 | 1

回答済み
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...

約1ヶ月前 | 1

回答済み
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...

約1ヶ月前 | 1

| 採用済み

回答済み
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...

約1ヶ月前 | 1

| 採用済み

さらに読み込む