[Gretl-devel] Re: foreign block and string-valued series
Am 27.01.2025 um 00:20 schrieb Cottrell, Allin:
On Sun, Jan 26, 2025 at 12:43 PM Sven Schreiber
<sven.schreiber(a)fu-berlin.de> wrote:
> in applied work with a 'foreign' block where data is sent to R, I had
> the case of a string-valued series which was transferred as strings and
> then caused hiccups on the R side. I solved the problem by copying on
> the gretl side the series to another one, which then --as described in
> the guide-- only contains numbers.
Give an example script, please.
Here's an example (where the data itself is based on the example in
chapter 16):
<hansl>
open data4-10
markers --to-array=S
series state = S
# print state --byobs
foreign language=R --send-data=state
print(gretldata)
print(as.matrix(gretldata))
end foreign
</hansl>
I'm not saying it's wrong that the strings are transferred, the question
right now is if it's intended. But then I was also a bit surprised that
in this example as.matrix still seems to keep the strings.
thanks
sven
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