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Change data type of a table column into datetime?
Take a look at the convertvars function for changing the data type of a table variable. Also, is there a reason you're bring in...

10 months ago | 0

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How to change interval unit of x axis
If X is a duration array (X = minutes(0:15:262800)), you plot datetimes or durations directly, and changing the Format property ...

1 year ago | 0

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alternative visualisations of 3 vectors
You could construct datetimes from those separate vectors of year/month/day, and then plot the datetime variables. That brings y...

1 year ago | 0

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How to store Matlab datetime data type in hdf5
I don't think HDF5 has its own definition of a date/time type and you can't store MATLAB datetimes directly in HDF5. There are o...

1 year ago | 0

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Answered
Convert categorical back to integer
Peter's answer to this similar post provides a few other suggestions to consider.

1 year ago | 0

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Overwriting a table with a different sized table
There are two ways that timetables (or table) can contain tables. In one approach, the table is the same height as the timetable...

1 year ago | 0

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table row key implementation
Hi Andrew, I assume you mean t.Properties.RowNames throughout rather than "RowKeys." Yes, that's a large difference in performa...

1 year ago | 0

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Answered
Plotting of yearly data.
There are a few ways to tackle this problem. Here's one approach: fi = '~/Downloads/Mod21_All_Inclusive_Data_Nov2019.txt'; opt...

1 year ago | 0

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problem plotting excel date, cant convert to HH:MM:SS only
I'm not entirely clear about what your data looks like. Attaching a file would help. That said, I suspect readtable would do the...

1 year ago | 0

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How can I convert datetime into double?
What do you want the doubles to represent? Datenum returns a double represents days since 0 CE. The posixtime function would...

1 year ago | 0

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How to filter rows in a timetable based on a range between 08:00 and 16:00 for everyday and put in a new timetable
You can do this with some logical indexing on the row times. Create a timetable with a few days worth of hourly data: tt = tim...

1 year ago | 1

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How to use timetable with hierarchical data
For synchronizing leaf-to-leaf, you probably will end up wanting to write a for-loop, looping over leaf grouping variables, sync...

1 year ago | 0

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Answered
Issue with loading datetime from table
There's no reason to go through cell to pass the datenums into datetime: Data = readtable(‘FileMaker.csv’); Dates = datetime...

1 year ago | 0

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convert "number of days since" to datetime, given 365-day and 360-day calendars (not Gregorian)
Adding support for a broader range of calendars is something I've been thinking about. For a fixed-length calendar (360-day or 3...

1 year ago | 0

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Answered
Associate value to the correct date
Take a look at the timetable synchronize method. If you import your "1st", "2nd", "3rd" as separate timetables tt1,tt2,tt3, then...

2 years ago | 0

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Answered
Increment dates using for loop
Are there any other calculations being done in the loop body of your actual code? If not, this can be done without looping: sam...

2 years ago | 0

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Answered
Calculate mean of calendarDuration? (i.e. mean of age)
Hi Max, You probably want to calculate the ages of the participants as durations, and mean() is defined for duration. calendarD...

2 years ago | 0

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Reorder table variables / columns
In R2018a, check out the new <https://www.mathworks.com/help/matlab/ref/movevars.html movevars> function for rearranging variabl...

3 years ago | 5

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How to go about grouping, listing and (if user specifies) writing to a file a group of time series objects which are of different lengths (# of rows) and different time bases?
Take a look at the synchronize function for timetables. By default, synchronize(tt1,tt2) will construct a new time table with a ...

3 years ago | 0

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Answered
Have a string with an analog time value, how to convert it to total time elapsed?
The duration datatype is the correct type to represent this data, and you can plot durations. In R2018a, there is a new capab...

3 years ago | 0