On Wed, 4 Jan 2017, Pedro Bação wrote:

Hello,
Is there a Gretl function will that tell us what is the type of the
variable given as argument? If not, is there a way of getting that sort of
information in Gretl?

In fact there is such a function, but for some reason it has never been documented -- I'm in the process of amending that. The function is named "typeof": it takes a putative identifier as argument and returns a numeric code, as described in the help for the "inbundle" function. To illustrate:

<hansl>
open data4-1
matrix m
eval typeof(sqft)
eval typeof(m)
eval typestr(typeof(m))
eval typeof(nothing)
</hansl>

This gives the output

2
3
matrix
0

Having this function makes the (documented) "exists" function somewhat redundant. In fact, internally I'm making "exists" into an alias for "typeof".

Allin Cottrell




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