Rule extraction print_rules error attempting to access 1-element Vector{Float64} at index [2]

[Zapiano]

Apparently all rules that have two conditions (e.g., if A > x and B <= y) also have two consequents, and if they have only one condition (e.g., if A > x) they also have only one consequent (and that's what is causing this error). This is weird and it could mean one (or more) of the following things:

1. My interpretation of what a consequent means was wrong
2. The values that we are getting and that we are calling "consequent" is actually something else
3. There's a bug in SIRUS

This needs to be investigated (and the bug fixed).

Since I remember getting one condition rules in the past and not having this issue, so I'm leaning towards option (3)...

The code needed to generate this:

# Supposing you have loaded a `dom`, sampled some `scens` and have a result set `rs`

# Extract some metric
stac = ADRIA.metrics.scenario_total_cover(rs)

# Cluster
n_clusters = 6
clusters_stac = ADRIA.analysis.cluster_scenarios(
    stac[timeinterval, :],
    n_clusters;
    distance=:euclidean)
highest_clusters(x) = x .>= x .∈ [sort(x; rev=true)[1:2]]
target_stac = ADRIA.analysis.find_scenarios(
    stac[timeinterval, :], clusters_stac, highest_clusters
)

# Select 
ms = ADRIA.model_spec(dom)
fields_iv =
    ADRIA.component_params(rs, [Intervention, SeedCriteriaWeights])[
        .!ADRIA.component_params(rs, [Intervention, SeedCriteriaWeights]).is_constant, :
    ].fieldname
scens_iv = scens[:, fields_iv]

max_rules = 20
rules_iv = ADRIA.analysis.cluster_rules(target_stac, scens, max_rules; lambda=1e-3)
ADRIA.analysis.print_rules(rules_iv)

And the error message is:

ERROR: BoundsError: attempt to access 1-element Vector{Float64} at index [2]
Stacktrace:
  [1] throw_boundserror(A::Vector{Float64}, I::Tuple{Int64})
    @ Base .\essentials.jl:14
  [2] getindex
    @ .\essentials.jl:916 [inlined]
  [3] consequent
    @ C:\Users\pribeiro\AIMS\Code\ADRIA.jl\src\analysis\rule_extraction.jl:105 [inlined]
  [4] (::ADRIA.analysis.var"#rule_string#93"{…})(rule::ADRIA.analysis.Rule{…})
    @ ADRIA.analysis C:\Users\pribeiro\AIMS\Code\ADRIA.jl\src\analysis\rule_extraction.jl:101
etc

[Zapiano]

Closed as this was actually caused by a change in #899 and was already fixed there.