Create the matrix with aligned dates

hi,i've this problem to solve

i've a matrix of date (see pics) A (row) * B(columns)

i used datetime in this matrix

Each date vector can start and end at a different time

I want to synchronize the dates so that each row corresponds to the same date (

example:

Or if it becomes complicated to shift them up or down n boxes, place them side by side with an index (see pics below)

[the cyclist]

Can you upload the data, instead of using screenshots? You can use the paper clip icon in the INSERT section of the toolbar.

[shamal]

how i save data in a file?

[Walter Roberson]

https://www.mathworks.com/help/matlab/matlab_prog/combine-timetables-and-synchronize-their-data.html

[shamal]

👍👍 thanks

[shamal]

>> A=load("TEST_A.mat");

>> D=load("TEST_B.mat");

>> TEST_sYNCRONIZE

Incorrect number or types of inputs or outputs for function 'synchronize'.

Error in TEST_sYNCRONIZE (line 7)

synchronize(A,D,'union','linear')

i try to union array with different size but it give me error..

According to the documentation it says to use the 'union' and 'linear' command if the vectors don't have linear dimensions

I was wrong.. i don't know the reason but i have to use A.A and D.D to recall the data But it doesn't work the same

[shamal]

hi, i attach file .m with data to syncronized

i try to syncronized it but it give me error

Someone can help me? thanks

i want this result (see pics below)

Answer 1

[the cyclist]

load SyncronizedData.mat

for nc = 2:width(J)
    [tf,loc] = ismember(J(:,nc),J(:,nc-1));
    tmp = J(:,nc);
    J(:,nc) = {'NaT'};
    J(loc(tf),nc) = tmp(tf);
end

J(all(strcmp(J,'NaT'),2),:)=[]

J = 7×3 cell array
    {'13-Jan-2008'}    {'13-Jan-2008'}    {'NaT'        }
    {'14-Jan-2008'}    {'14-Jan-2008'}    {'NaT'        }
    {'15-Jan-2008'}    {'15-Jan-2008'}    {'15-Jan-2008'}
    {'16-Jan-2008'}    {'16-Jan-2008'}    {'16-Jan-2008'}
    {'17-Jan-2008'}    {'17-Jan-2008'}    {'17-Jan-2008'}
    {'18-Jan-2008'}    {'18-Jan-2008'}    {'18-Jan-2008'}
    {'19-Jan-2008'}    {'19-Jan-2008'}    {'19-Jan-2008'}

[shamal]

I'm having trouble replicating your results

load SyncronizedData.mat

J =

struct with fields:

J: {9×3 cell}

>> J.J

ans =

9×3 cell array

{'NaT' } {'NaT' } {'NaT' }

{'13-Jan-2008'} {'13-Jan-2008'} {'NaT' }

{'14-Jan-2008'} {'14-Jan-2008'} {'NaT' }

{'15-Jan-2008'} {'15-Jan-2008'} {'15-Jan-2008'}

{'16-Jan-2008'} {'16-Jan-2008'} {'16-Jan-2008'}

{'17-Jan-2008'} {'17-Jan-2008'} {'17-Jan-2008'}

{'18-Jan-2008'} {'18-Jan-2008'} {'18-Jan-2008'}

{'19-Jan-2008'} {'19-Jan-2008'} {'19-Jan-2008'}

{'NaT' } {'NaT' } {'NaT' }

should I use J.J instead of J?

[the cyclist]

I'm not sure why you save something different in the file you upload than you did in the file you are using. But, yes, it looks like J.J should work.