[GRASS-user] Creating STRDS from scratch

Rich Shepard rshepard at appl-ecosys.com
Tue Feb 21 15:43:47 PST 2017


On Wed, 22 Feb 2017, Sören Gebbert wrote:

> If your data is accumulated for a time period (a day, ...), then you
> have interval time.
> If your data represent a value that is valid for a specific time
> period (daily mean), you have interval time.
> If your data represents a specific state at a point of time that has a
> smaller period as a second, then you have time instances.

Sören,

   Thank you for clarifying. We all use terms for which we have specific
definitions while others have their own definitions that are different.
That's why I want to be sure we're both using the same definition.

> The next thing to consider is, what you want to do with the data. If you
> want to compute interactions with other time series, then it makes sense
> to use time intervals to compute temporal overlapping and intersection.

   These data will be part of the input to Itzi models of flat land surface
hydrology. They are the only variable contributing to water depth by time
and place.

Very much appreciated,

Rich


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