Dialog Display Functions
@uidialog Display a dialog with multiple controls.
@uiedit Display a dialog with an edit control.
@uilist Display a dialog with a listbox control.
@uimlist Display a dialog with a multiple-select listbox control.
@uiradio Display a dialog with radio buttons.
Programming Language Entries
Call a subroutine within a program.
The call statement is used to call a subroutine within a program.
Cross-references
ELSE clause of IF statement in a program.
Starts a sequence of commands to be executed when the IF condition is false. The else keyword must be terminated with an endif.
Syntax
if [condition] then
[commands to be executed if condition is true]
else
[commands to be executed if condition is false]
endif
Cross-references
End of IF statement. Marks the end of an IF, or an IF-ELSE statement.
Syntax
if [condition] then
[commands if condition true]
endif
Cross-references
Mark the end of a subroutine.
Syntax
subroutine name(arguments)
commands
endsub
Cross-references
Exit from current loop in programs.
exitloop causes the program to break out of the current FOR or WHILE loop.
Syntax
Command: exitloop
Examples
for !i=1 to 107
if !i>6 then exitloop
next
Cross-references
FOR loop in a program.
The for statement is the beginning of a FOR...NEXT loop in a program.
Syntax
for counter=start to end [step stepsize]
[commands]
next
Cross-references
IF statement in a program.
The if statement marks the beginning of a condition and commands to be executed if the statement is true. The statement must be terminated with the beginning of an ELSE clause, or an endif.
Syntax
if [condition] then
[commands if condition true]
endif
Cross-references
Include another file in a program.
The include statement is used to include the contents of another file in a program file.
If an include file is specified without an absolute path, the base location will be taken from the location of the program file, not from the default directory.
Syntax
include filename
Cross-references
End of FOR loop. next marks the end of a FOR loop in a program.
Syntax
for [conditions of the FOR loop]
[commands]
next
Cross-references
Turn off automatic printing in programs.
poff turns off automatic printing of all output. In programs, poff is used in conjunction with pon to control automatic printing; these commands have no effect in interactive use.
Syntax
Command: poff
Cross-references
See
“Print Setup” for a discussion of printer control.
Turn on automatic printing in programs.
pon instructs EViews to send all statistical and data display output to the printer (or the redirected printer destination; see
output). It is equivalent to including the “
p” option in all commands that generate output.
pon and
poff only work in programs; they have no effect in interactive use.
Syntax
Command: pon
Cross-references
See
“Print Setup” for a discussion of printer control.
Exit subroutine.
The return statement forces an exit from a subroutine within a program. A common use of return is to exit from the subroutine if an unanticipated error has occurred.
Syntax
if [condition] then
return
endif
Cross-references
Pause program execution.
Syntax
sleep n
pauses a program by n milliseconds (default is 5000).
Example
sleep 1000
Step size of a FOR loop.
Syntax
for !i=a to b step n
[commands]
next
step may be used in a FOR loop to specify the size of the step in the looping variable. If no step is provided, for assumes a step of “+1”.
If a given step exceeds the end value b in the FOR loop specification, the contents of the loop will not be executed.
Examples
for !j=5 to 1 step -1
series x = nrnd*!j
next
repeatedly executes the commands in the loop with the control variable !J set to “5”, “4”, “3”, “2”, “1”.
for !j=0 to 10 step 3
series z = z/!j
next
Loops the commands with the control variable !J set to “0”, “3”, “6”, and “9”.
You should take care when using non-integer values for the stepsize since round-off error may yield unanticipated results. For example:
for !j=0 to 1 step .01
series w = !j
next
may stop before executing the loop for the value !J=1 due to round-off error.
Cross-references
Break out of program.
The stop command halts execution of a program. It has the same effect as hitting the F1 (break) key.
Syntax
Command: stop
Cross-references
Declare a subroutine within a program.
The subroutine statement marks the start of a subroutine.
Syntax
subroutine name(arguments)
[commands]
endsub
Cross-references
Part of IF statement.
then marks the beginning of commands to be executed if the condition given in the IF statement is satisfied.
Syntax
if [condition] then
[commands if condition true]
endif
Cross-references
Upper limit of for loop OR lag range specifier.
to is required in the specification of a FOR loop to specify the upper limit of the control variable; see
“The FOR Loop”.
When used as a lag specifier, to may be used to specify a range of lags to be used in estimation.
Syntax
Used in a FOR loop:
for !i=n to m
[commands]
next
Used as a Lag specifier:
series_name(n to m)
Examples
ls cs c gdp(0 to -12)
Runs an OLS regression of CS on a constant, and the variables GDP, GDP(–1), GDP(–2), …, GDP(–11), GDP(–12).
Cross-references
End of WHILE clause.
wend marks the end of a set of program commands that are executed under the control of a WHILE statement.
Syntax
while [condition]
[commands while condition true]
wend
Cross-references
Conditional control statement. The while statement marks the beginning of a WHILE loop.
The commands between the while keyword and the wend keyword will be executed repeatedly until the condition in the while statement is false.
Syntax
while [condition]
[commands while condition true]
wend
Cross-references