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As -help mf_st_view, mark(remarks5)- says: "Assignment does not cause
promotion." Note that you execute Stata commands, such as the -recast-
command, from within -mata- as in - help mata stata-
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Mike Wazowski
Sent: Samstag, 4. Juli 2009 05:43
To: [email protected]
Subject: st: help with mata's st_sview
dear statalisters,
i am puzzled by the following behavior:
i use st_sview to access a stata variable and change it internally within
mata. however, i am not able to "stretch" a string variable above its
storage type, for example, "make" in auto.dta is stored as str18 but if i
want to change it within mata to something longer than 18 chars, the new
string gets truncated to 18 chars. the following code illustrates this
behavior:
sysuse auto, clear
keep in 1/5
list make
d make
mata:
st_sview(x,.,"make")
x[.,.]=x*2
x
end
list make
replace make = "01234567890123456789" in 1
list make
as you can see, when i issue -replace- in stata, "make" is automatically
promoted to str20.
how can i promote a sting var from within mata to a longer string?
thanks,
mike
ps. the same behavior happens with st_sstore:
sysuse auto, clear
keep in 1/5
list make
d make
mata:
st_sstore(2,"make","01234567890123456789")
end
list make
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