Commonly used Native Eviews Functions and their Definitions

@count(x) returns the number of all observations (including missing values)

d(x) first difference.

d(x,n) n-th order difference.

@demean(s[,smpl]) demean. Returns a copy of series s translated to have a mean of zero.

dlog(x) first difference in logs.

dlog(x, n) nth difference in logs.

@iff(s,x,y) recode by condition returns if condition is true; otherwise returns . Note this is the same as @recode.

@isna(x) equal to NA. Returns 1 if x is equal to NA and 0 otherwise.

@obs(x[,s]) number of observations. Returns the number of non-missing observations for X in the current sample.

@pch(x)one-period percentage change (in decimal).

@pc(x) one-period percentage change (in percent) - equals @pch(x)*100.

@pca(x) one-period percentage change—annualized (in percent) equals @pcha(x)*100.

@recode(s,x,y) recode by condition. If s is true then it returns x, and s is false it returns y.

@ytd(s[, smpl]) YTD of series s. Provides the cumulative sum of a series within the year. Optionally, a sample may be provided to limit the observations included in the summation.