Is there a format option for the DATESTR function within the Financial Toolbox that shows fractions of seconds?

I have several data points within one second, and I would like to show the fractional parts of the second rather than rounding off to the nearest second as all the DATESTR formats do.

Answer 1

[MathWorks Support Team]

This enhancement has been incorporated in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

The ability to do use a DATESTR format that does not round-off the seconds is not available in MATLAB.

To work around this issue, you can customize the following function to suit your specific needs:

function out = newdatestr(T)

% This function converts a time, T, from the DATENUM format into

% HH:MM:SS.SSSSSS

%

% Here the seconds part retains 6 digits past the decimal.  To change 

% this number, change the number after the decimal after

% the last percent in the format string "f".

[y,mo,d,h,min,s] = datevecmx(T, 6);

f = '%2d:%2d:%2.6f\n';

out = sprintf(f, [h, min, s]');