create a variable and specify its column
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Suppose I have a table
day temperature
1/1/2020 30
I want to create a vaiable 'month" from 'day' and put it next to 'day' like
day month temperature
1/1/2020 1 30
Please advise.
2 个评论
the cyclist
2020-6-28
For you future reference, it is better to actually show what you have via MATLAB syntax (or actually uploading the data). Otherwise, we need to guess about the formats of everything.
Specifically, is day a string, a character array, or a datetime?
alpedhuez
2020-6-29
采纳的回答
the cyclist
2020-6-28
% Create the table
day = datetime('1/1/2020');
temperature = 30;
T = table(day,temperature);
% Derive month from day
T.month = month(day);
% Rearrange the columns
T = T(:,[1 3 2])
更多回答（1 个）
Gaganjyoti Baishya
2020-6-28
Hi
You can get the month from the day string by iterating it till you get the month.
for i=1:size
if day(i)=='/'
if day(i+2)=='/'
month=day(i+1);
else
month=day(i+1) + day(i+2) %char concatenate
end
break;
end
month gives the required value of month. You just need to put it in the column.
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