Dear All,
Quote 1 (p805 Mata 11 manual, PDF):
Syntax
void st_view(V, real matrix i, j)
void st_view(V, real matrix i, j, scalar selectvar)
void st_sview(V, real matrix i, j)
void st_sview(V, real matrix i, j, scalar selectvar)
Quote 2 (p759 Mata 11 manual, PDF):
selectvar may be specified as real or as a string. Observations for
which selectvar != 0 will
be selected. If selectvar is real, it is interpreted as a variable
number. If string, selectvar
should contain the name of a Stata variable.
Quote 3 (p806 Mata 11 manual, PDF)
st_view(X, ., "mpg displ weight")
Questions:
Q1) Why is the code below not working (the syntax of st_view is
identical to st_sview)? And
Q2) Why is it "not working" differently in Stata 10 (two errors) and
11 (one error)?
Best, Sergiy Radyakin
*******************
CODE
*******************
version 11
sysuse auto, clear
generate make2=make
mata
X=1
st_view(X,.,"price weight")
st_view(X,.,("price", "weight"))
st_sview(X,.,"make make2")
st_sview(X,.,("make", "make2"))
end
***********************
EXECUTION
***********************
Execution in Stata 11.0:
. version 10.1
.
. sysuse auto, clear
(1978 Automobile Data)
.
. generate make2=make
.
. mata
------------------------------------------------- mata (type end to
exit) --------------------------------------------------------------------------------
:
: X=1
:
: st_view(X,.,"price weight")
:
: st_view(X,.,("price", "weight"))
:
: st_sview(X,.,"make make2")
variable make make2 not found
st_sview(): 3500 invalid Stata variable name
<istmt>: - function returned error
r(3500);
:
: st_sview(X,.,("make", "make2"))
:
: end
----------------------------------------------------------------------------------------------------------------------------------------------------------
Execution in Stata 10.1
. version 10.1
.
. sysuse auto, clear
(1978 Automobile Data)
.
. generate make2=make
.
. mata
------------------------------------------------- mata (type end to
exit) --------------------------------------------------------------------------------------
:
: X=1
:
: st_view(X,.,"price weight")
variable price weight not found
st_view(): 3500 invalid Stata variable name
<istmt>: - function returned error
r(3500);
:
: st_view(X,.,("price", "weight"))
:
: st_sview(X,.,"make make2")
variable make make2 not found
st_sview(): 3500 invalid Stata variable name
<istmt>: - function returned error
r(3500);
:
: st_sview(X,.,("make", "make2"))
:
: end
----------------------------------------------------------------------------------------------------------------------------------------------------------------
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