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Add add_similar_to_expression! for arrays of Numbers (#798)
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lbonaldo authored Dec 4, 2024
1 parent 4eb44e8 commit 165836d
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
number of concurrent Gurobi uses is limited (#783).
- Additional long-duration storage constraints to bound state of charge in
non-representative periods (#781).
- New version of `add_similar_to_expression!` to support arrays of `Number`s. (#798)

### Changed
- The `charge.csv` and `storage.csv` files now include only resources with
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2 changes: 1 addition & 1 deletion Project.toml
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@@ -1,7 +1,7 @@
name = "GenX"
uuid = "5d317b1e-30ec-4ed6-a8ce-8d2d88d7cfac"
authors = ["Bonaldo, Luca", "Chakrabarti, Sambuddha", "Cheng, Fangwei", "Ding, Yifu", "Jenkins, Jesse D.", "Luo, Qian", "Macdonald, Ruaridh", "Mallapragada, Dharik", "Manocha, Aneesha", "Mantegna, Gabe ", "Morris, Jack", "Patankar, Neha", "Pecci, Filippo", "Schwartz, Aaron", "Schwartz, Jacob", "Schivley, Greg", "Sepulveda, Nestor", "Xu, Qingyu", "Zhou, Justin"]
version = "0.4.1-dev.16"
version = "0.4.1-dev.17"

[deps]
CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
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2 changes: 1 addition & 1 deletion src/model/core/operational_reserves.jl
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Expand Up @@ -270,7 +270,7 @@ function operational_reserves_core!(EP::Model, inputs::Dict, setup::Dict)
# N-1 contingency requirement is considered only if Unit Commitment is being modeled
if UCommit >= 1 &&
(inputs["pDynamic_Contingency"] >= 1 || inputs["pStatic_Contingency"] > 0)
add_to_expression!(EP[:eRsvReq], EP[:eContingencyReq])
add_similar_to_expression!(EP[:eRsvReq], EP[:eContingencyReq])
end

## Objective Function Expressions ##
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9 changes: 9 additions & 0 deletions src/model/expression_manipulation.jl
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Expand Up @@ -138,6 +138,15 @@ function add_similar_to_expression!(expr1::AbstractArray{GenericAffExpr{C, T}, d
return nothing
end

# If the expressions are vectors of numbers, use the += operator
function add_similar_to_expression!(arr1::AbstractArray{T, dims},
arr2::AbstractArray{T, dims}) where {T <: Number, dims}
for i in eachindex(arr1)
arr1[i] += arr2[i]
end
return nothing
end

###### ###### ###### ###### ###### ######
# Element-wise addition of one term into an expression
# Both arrays must have the same dimensions
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6 changes: 6 additions & 0 deletions test/expression_manipulation_test.jl
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Expand Up @@ -92,6 +92,12 @@ let
GenX.add_similar_to_expression!(EP[:large_expr], EP[:large_const_expr])
@test all(EP[:large_expr][:] .== 18.0)

# Test add_similar_to_expression! with AbstractArray{Number}
@expression(EP, eArr1[i = 1:100, j = 1:50], i * 10.0+j * 10.0)
@expression(EP, eArr2[i = 1:100, j = 1:50], -(i * 10.0 + j * 10.0))
GenX.add_similar_to_expression!(EP[:eArr1], EP[:eArr2])
@test all(EP[:eArr1][:] .== 0.0)

# Test add_similar_to_expression! returns an error if the dimensions don't match
GenX.create_empty_expression!(EP, :small_expr, (2, 3))
@test_throws ErrorException GenX.add_similar_to_expression!(EP[:large_expr],
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