[Kst] [Bug 243684] Handling of formatted timestamps as a valid field in input files

netterfield at astro.utoronto.ca netterfield at astro.utoronto.ca
Sat Feb 25 17:30:45 UTC 2012


--- Comment #12 from  <netterfield astro utoronto ca>  2012-02-25 17:30:45 ---
A few comments:

How do you specify that columns 1 and 2 form a time/date, and what format they
are in?

How do I specify that line 5 contains a time offset and that line 7 contains a

What is the purpose of Date and Time separately?   kst plots do not currently
support time of day (but not date) output.  This could be changed if we really
need it.  But I can't see a use for date only.
So: datetime and time, with datetime being the most likely scenario.  We could
ignore time for now I think.

Basically, there are three types of datetimes in data sources:
 (a) datetime as a numerical value, like JD or ctime in a vector: 
     already supported
 (b) calculable datetime (requires T0, dT, and an index vector)
     these could be manually entered, or could be metadata in the file.
 (c) ASCII specified date as column(s) in the file.  
     There are a number of common formats, and many more uncommon ones.

We should be able to support all three.

(b) types could benefit from scalars in ascii files.

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