Read Date time series format
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Life is Wonderful
il 17 Ago 2019
Modificato: per isakson
il 14 Set 2019
I want to read Date and time series from below format
% file.txt has time formatted data
[0803/135825.745523:GGBB:main.cc(182)]
[0803/135825.746634:NNFF:boat_control_xhramyos.cc(137)]
% My Code is as follows
VariableNames = {'Date'};
VariableWidths = [20]
VariableTypes = {'datetime'};
opts = fixedWidthImportOptions('VariableNames','SelectedVariableNames', [1]);
opts = setvaropts(opts, 'Date', 'InputFormat', 'MMdd/HHmmss.SSSSSS');
Content.update_engine = readtable('file.txt', opts);
I am getting following error as I am unable to read the time properly.
Warning: Unable to convert one or more variables to datetime. Specify the correct
InputFormat and DatetimeLocale properties in the DatetimeVariableImportOptions.
> In matlab.io.internal.functions.ReadTableWithImportOptionsText/executeImpl (line 82)
In matlab.io.internal.functions.ReadTableWithImportOptions/executeImpl (line 18)
In matlab.io.internal.functions.ReadTableWithImportOptionsText/execute (line 122)
In matlab.io.internal.functions.ReadTableWithImportOptions/execute (line 25)
In matlab.io.internal.functions.ExecutableFunction/validateAndExecute (line 98)
8 Commenti
Guillaume
il 19 Ago 2019
Can you please suggest someting else that is easy to do
Stick to one file format, the fixed width one in your previous question. Or use an even better one (e.g. comma delimited with text in quoted strings)
Otherwise, I'm afraid there's no easy way to do it. You'll have to use regexp or write your own parser.
Risposta accettata
Life is Wonderful
il 20 Ago 2019
2 Commenti
Walter Roberson
il 20 Ago 2019
The conversion looks perfect when I try.
timestamps.Format = 'dd-MMM-uuuu HH:mm:ss.SSSSSS';
>> timestamps(1:2)
ans =
1×2 datetime array
03-Aug-2019 13:58:25.745523 03-Aug-2019 13:58:25.746634
>> S(1:100)
ans =
'[0803/135825.745523:INFO:main.cc(182)] A/B Update Engine starting
[0803/135825.746634:INFO:boot_cont'
745523 and 746634 exactly match the input text.
Più risposte (1)
Walter Roberson
il 19 Ago 2019
S = fileread('update_engine.txt');
timestamps = regexp(S, '^.(.{18})', 'lineanchors', 'match');
ts_dt = datetime(timestamps, 'InputFormat', 'MMdd/HHmmss.SSSSSS');
4 Commenti
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