about convert time data and plotting

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주희 박
주희 박 el 22 de Jul. de 2022
Comentada: 주희 박 el 23 de Jul. de 2022
Hi. I have a question about converting time data
I have time data in double and Thickness data of water mass I calculated.
Attached TDD(TDD(:,1)=Thick, TDD(:,2)=time data )
So I draw plot using them.
I want to convert xlabelstick to months.ex) 01 02 03 04 --- 11 12
Thank you for your help.

Respuesta aceptada

Chunru
Chunru el 22 de Jul. de 2022
Editada: Chunru el 22 de Jul. de 2022
load("TDD.mat")
%TDD
subplot(121);
plot(datetime(TDD(:,2),'ConvertFrom','datenum'), TDD(:,1), '.');
datetick('x', "mm/dd"); % doc datetick for more options
subplot(122);
plot(datetime(TDD(:,2),'ConvertFrom','datenum', 'Format', 'MM/dd'), TDD(:,1), '.');
%datetick('x', "MM/dd"); % doc datetick for more options
  7 comentarios
Chunru
Chunru el 22 de Jul. de 2022
I would like to point out that with "datetick('x', "mm/dd")" we can explicitly choose the data format as month/day. With datetime(TDD(:,2),'ConvertFrom','datenum', 'Format', 'MM/dd'), the format is changed to "Jan" and so on. It seems that datetick('x', "mm/dd") should be the command to change the tick setting. The datetime format command seems failed to do so.
주희 박
주희 박 el 23 de Jul. de 2022
you both so genious. And I can get right answer when I use Matlab2022. (I used 2021 yesterday). Thank you so much. Thanks.

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Más respuestas (1)

Walter Roberson
Walter Roberson el 22 de Jul. de 2022
load TDD
thick = TDD(:,1);
dt = datetime(TDD(:,2),'ConvertFrom', 'datenum', 'Format', 'MM');
scatter(dt, thick, '.')

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