How to work with Unix timestamps in Matlab?

by

How about 

date = datestr(unix_time/86400 + datenum(1970,1,1))

if unix_time is given in seconds, unix_time/86400 will give the number of days since Jan. 1st 1970. Add to that the offset used by Matlab’s datenum (datenum(0000,1,1) == 1), and you have the amount of days since Jan. 1st, 0000. This can be easily converted to human-readable form by Matlab’s datestr.

If you have milliseconds, just use

date = datestr(unix_time/86400/1000 + datenum(1970,1,1))

Wrapped in functions, these would be 

function dn = unixtime_to_datenum( unix_time )
    dn = unix_time/86400 + 719529;         %# == datenum(1970,1,1)
end

function dn = unixtime_in_ms_to_datenum( unix_time_ms )
    dn = unix_time_ms/86400000 + 719529;   %# == datenum(1970,1,1)
end

datestr( unixtime_to_datenum( unix_time ) )

More Related Contents:

  1. find unknown value in matrix using MATLAB [closed]
  2. Subscript indices must either be real positive integers or logicals, generic solution
  3. Finding islands of zeros in a sequence
  4. Weighted random numbers in MATLAB
  5. Using GCC (MinGW) as MATLAB’s MEX compiler
  6. How can I accumulate cells of different lengths into a matrix in MATLAB?
  7. Approaches to create a video in matlab
  8. Suppress Output
  9. How do I set default values for functions parameters in MATLAB?
  10. How to select a submatrix (not in any particular pattern) in Matlab
  11. Matlab ode solvers: changing state and specified time
  12. Generate a random number in a certain range in MATLAB
  13. Access m-files in a subfolder without permanently adding it to the path
  14. What does operator “dot” (.) mean?
  15. Suppress exponential formatting in figure ticks
  16. Declaring a global variable in MATLAB
  17. How can I find the maximum value and its index in array in MATLAB?
  18. Vectorizing the Notion of Colon (:) – values between two vectors in MATLAB
  19. Passing functions as arguments in Matlab
  20. Reading CSV files with MATLAB?
  21. Draw random numbers from pre-specified probability mass function in Matlab
  22. How can I count the number of elements of a given value in a matrix?
  23. Determining the number of occurrences of each unique element in a vector
  24. Unicode characters in MATLAB source files
  25. Plot inside a loop in MATLAB
  26. Is it possible in matlab to explicitly format the output numbers?
  27. Content-Based Image Retrieval and Precision-Recall graphs using Color Histograms in MATLAB
  28. How do I convert a 2X2 matrix to 4X4 matrix in MATLAB?
  29. Multiple plots in one figure
  30. 3D curvefitting

Leave a Comment