Syntax: COPY xin1 { xin2 ... } xout1 { xout2 ... } IFF expression If an expression is used, all the input vectors must be the same length and this length must be the same as the length of the expression. If an expression is entered, index ranges on the vectors are not allowed, and xinI[j] is copied into xoutI if and only if the j'th element of the expression is true, that is, non-zero. The elements of xinI are copied in order into xoutI, that is, if the expression dictates that N elements of xinI are to be copied into xoutI then these will become the first N elements of xoutI.
Additional Information on:
Syntax: COPY xin1 { xin2 ... } xout1 { xout2 ... } If no expression is entered, then index ranges may be used on the input and/or the output vectors. In some cases, the copy command is equivalent to an assignment. For example, COPY XX[10:1:-2] X[1:10:2] is equivalent to X[1:10:2]=XX[10:1:-2].
If the \APPEND qualifier is used, the copied elements of xinI are appended onto the end of xoutI. If xoutI does not exist, COPY\APPEND is the same as COPY.