ompr (version 1.0.4)

sum_over: Sum over indexes

Description

This functions helps to create summations over indexes.

Usage

sum_over(.expr, ...)
sum_expr(.expr, ...)

Value

the sum over all the indexes

Arguments

.expr

an expression that can be expanded to a sum

...

bind variables in expr using dots. See examples.

See Also

add_constraint

set_objective

Please note that sum_expr is deprecated when used together with MIPModel.

Examples

if (FALSE) {
  # create a sum from x_1 to x_10
  sum_over(x[i], i = 1:10)
  # create a sum from x_2 to x_10 with even indexes
  sum_over(x[i], i = 1:10, i %% 2 == 0)
  sum_over(x[i, j], i = 1:10, j = 1:i)
}