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how to floor time for each hour?
A={'12-Dec-2021 09:09:04' '12-Dec-2021 09:24:04' '12-Dec-2021 09:39:04' '12-Dec-2021 09:54:04'}; B=datetime(A,'F...

2 years 前 | 0

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Read Data from Text File as Matrix
a=readmatrix('1.txt'); X=a'

2 years 前 | 0

| 已接受

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How to save output (Matrix) in excel files?
M: your Matrix X=your excel file name writematrix(M,'X.xls')

2 years 前 | 0

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How to import variable names and specific data range (comma separated values) from a .txt file?
try this: A=readtable('Earth-Moon_sys_ephem_at_ast_epochs.txt','delimiter','tab'); B=table2cell(A(20,:)); parameter=split(B,'...

2 years 前 | 1

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Please anyone can help to plot a graph, i didnt get a graph for the below program, it didnt showing any error, the output coming like a blank graph.
try this: cj1 = 4.5e-12; vs1 = -10; cj2 = 6.5e-12; vs2 = -2; vc = 0.65; num = cj1/cj2; den = (vc-vs2)/(vc-vs1); m = 0.0264...

2 years 前 | 0

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Create txt file from each row of Matrix
A=randi(100,3,7500); writematrix(A(1,:),'myfile1.txt') writematrix(A(2,:),'myfile2.txt') writematrix(A(3,:),'myfile3.txt')

2 years 前 | 0

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ismembertol: What am I doing wrong?
try this: x=readmatrix('x.txt'); Transparency = x(x>=0.9 | x<=0.8); [Lia,~] = ismembertol (x, Transparency,1e-16)

2 years 前 | 1

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Get and interpolate missed daily data
A=(datetime(2030,1,1):datetime(2060,12,31))'; % generating normal date A1=datenum(A); C=readtable('missed data.xlsx'); D1=da...

2 years 前 | 0

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How do i write this code for different timestep like this code is for 3600 and i want to use different timesteps like 1800,900,450
I have considered Yb=5 and Yp=8. nsteps = 12; t = zeros (nsteps,1); A = zeros (nsteps,1); B = zeros(nsteps, 1); P = zeros(n...

2 years 前 | 0

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HOW CAN CREATE A MATRIX FROM A SINGLE ROW?
use reshape function. A=randi(100,1,12) output=reshape(A,3,4)

2 years 前 | 1

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已回答
converting the time data into Datetime Format
try this syntax: th = datetime(A.TimeStamp,'InputFormat','dd.MM.yyyy HH:mm:ss.SSS','ConvertFrom','datenum');

2 years 前 | 1

| 已接受

已回答
Simplifying a code to one matrix
you can concatenate the matrix Mx and My either horizontally or vertically % if horizontal output=horzcat(Mx,My) % if vertica...

2 years 前 | 0

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已回答
i need to count the number of switches between numbers ( the frequency)
one approach. might be some other nice way A=[1,0,1,0,1,0,1,0]; B=numel(diff(A))+1

2 years 前 | 1

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datetime format issue?
datelimits = datetime({'20080401', '20080402'}, 'Format', 'yyyyMMdd')

2 years 前 | 0

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Extract same row and columns of matrix
you can find your answer here https://www.mathworks.com/matlabcentral/answers/266736-how-can-i-find-same-values-in-an-array Re...

2 years 前 | 1

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How to convert a string into row vector?
try this: a = 753; b= dec2bin(a) % b= '1011110001' format longG output=str2double(b)

2 years 前 | 1

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how can i get different answers?
you can write this function function y=myfunction(L,t) a=L(:,1); b=L(:,2); c=L(:,3); y=(a./(b+c))*t; end then call this f...

2 years 前 | 0

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How to split data of a .mat file into trainH trainY testH testY as shown in picture
My guess: 1st step: load your cmc.mat file in Variable A as a struct. 2nd step: extract your 4 variables from struct A. A=loa...

2 years 前 | 0

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How to place values in a matrix with values from another matrix?
Year=[2018;2019;2020;2021;2022]; value1=[13;15;-76;-1;0]; table1=table2array(table(Year,value1)) Year2=[2018;2019;2020;2020;2...

2 years 前 | 0

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Replace zeros with non-zero values from another array
output1=[71;0 ;74 ;75 ;85 ;0 ;88 ]; output2=[39242;32;8385 ;0;17854; 74 ;10499]; output1(output1==0)=output2(output1==0); out...

2 years 前 | 0

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How to search a specific row and a column from a csv file that are associated with the date that was selected?
try this. please follow the dateformat whenever user put the date. I have attached a random csv file. data=readtable('VIX.csv',...

2 years 前 | 0

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已回答
Transform table to another format
Headers = ["Fund1";"Fund2";"Fund3"]; Fund1 = [1;0.1;0.2]; Fund2 = [0.3;1;0.4]; Fund3 = [0.5;0.6;1]; correlData = table(Heade...

2 years 前 | 1

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How to compare elements of a 2D array with other elements of the same array.
A=[1 2 3 ; 2 9 5; 4 1 8] [A1 C]=ismember(A(:),A); A2=sort(C); % sorting index A3=A(A2) % value of A those are identical

2 years 前 | 0

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How to apply dec2bin on a string to get a single output?
a = '56515219790691171413109057904011688695424810155802929973526481321309856242040'; a1=cell2mat(split(a,' ')); a2=str2double...

2 years 前 | 1

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已回答
Converting array to column matrix
use colon(:). each variable will be forced to be a column vector col_vector=Eflevel(:) if you want extract first 50 data(50*1)...

2 years 前 | 0

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logical operation on matrix
A=[1 2 3;4 5 6; 4 5 2] B=rem(A,2) % returns the odd number output=A-B

2 years 前 | 0

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Extract the last day of each month in daily data set
if your data is arranged properly it would be 10227 rows from 1990 to 2017. then try this N=1990:2017; for i=1:length(N) A(i,...

2 years 前 | 0

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Finding rows where the first column values are equal
A=[13453 10359 9955 5257 5299 5258 5849 3644 5848 5397 7230 5396 17132 17130 17118 4767 4768 4770 8291 8292 8316 3191 319...

2 years 前 | 1

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已回答
How to create this patterned matrix?
try this: x=[0,8,7,6,5,4,3,2,1]; A1=circshift(x,1); A2=circshift(x,2); A3=circshift(x,3); A4=circshift(x,4); A5=circshift(...

2 years 前 | 1

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Find a word in a text file and read values from that line
A=readtable('example2.txt','delimiter',':'); output=table2array(A(4,2))

2 years 前 | 0