Federico,
I understand what you are after — you want time-series estimates based on the
Thiessen polygon estimates
taken from the station time-series data. My recommendation is that the process
of doing this would be far
easier using something like GRASS GIS, possibly in conjunction with R (since
they play together very well).
Unfortunately, lots of coding/scripting is needed — I can not see that there
are a few R commands you can
make to pull this off.
The process would look something like:
(1) import all station data for time step 1 (all data could be imported at one
time, but this complicates the process)
(2) make Thiessen polygons based on (1)
(3) write-out results from (2)
(4) repeat (1)-(3) for each time step
(5) concatenate individual Thiessen polygon time-series results sequentially
This kind of thing is pretty straight-forward and keeps computers happy!
Regards,
Tom
Federico,
That's an improvement, but a long way from the reproducible example
requested by the posting guide. I and others who might help are more
interested in the way the data and coordinates are organized and a
detailed explanation of what you expect the results to look like, etc,
than in a verbal description of the problem. From your description, I
can come up with many ways in which your data might be specified, and
results that you might want.
The posting guide provides valuable tips on how to provide a
well-formed question.
Did you try looking at the packages and functions I suggested in my
previous reply?
Sarah
On Thu, May 26, 2011 at 11:35 AM, federico.eccel
<federico.ec...@gmail.com> wrote:
Dear Sarah,
I have a grid in which 8 raingauges are locted, in my case the dataset is
composed by 8 hourly timeseries, one for each raingauge. I would like to
obtain from these timeseries using the Thiessen method the values of the
precipitation in all the grid. In particular I would like to create the
thiessen polygons around the raingauges that have to be limited on my grid.
Thanks a lot
Federico
--
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177
EMAIL: thomas.ad...@noaa.gov
VOICE: 937-383-0528
FAX: 937-383-0033
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