Sampling Plan#

SamplingPlan.Show

Overview#

A Sampling Plan is used to implement counter based and time based sampling. The Sampling Plan defines the contexts, the counter and time frequency and can be attached to multiple Steps. A Step, in turn, can have multiple Sampling Plans attached.

Sampling works in combination with the MoveNext operation. It requires the following:

1. A Step marked as Sampling Evaluation Step, where the Sampling Plans are attached, and where a decision to perform sampling or not is taken.
2. A single optional Sampling Step after the Sampling Evaluation Step.

At the MoveNext operation, the system will lookup the sampling information and determine whether the Material must perform or skip the optional Sampling step. This process is illustrated in the next picture.

flowchart LR
    subgraph Materials
        M5[Material<br>M5]
        M4[Material<br>M4]
        M3[Material<br>M3]
    end
    subgraph  
        direction LR
        subgraph Step1
            S1(("Sampling<br>Evaluation<br>Step"))
        end
        subgraph "Step2 (Optional)"
            S2(("Sampling<br>Step"))
        end
        subgraph Step3
            S3(("Process<br>Step"))
        end
        S1 --- M1[Material<br>M1] ---> S2 --> S3
        S1 --- M2[Material<br>M2] ---> S3
    end

    Materials --> S1

class M1,M2,M3,M4,M5 mermaid_flowchart_material
class S1,S2,S3 mermaid_flowchart_step

Tying Everything Together#

graph TD
    A1[Step] === Main[Sampling Plan] === L1[Sampling Context Information] --- L2[Sampling Plan Instance Context Values] --- L3[Sampling Plan Instance]
    Main === L3

classDef mermaid_title color:#000, fill:#fafafa, stroke:#fafafa, stroke-width:0x, font-size:100%, font-weight:200;
classDef mermaid_start color:#000, fill:#fafafa, stroke:#fafafa, color:#fafafa, stroke-width:0x, font-size:100%, visibility: hidden;
classDef mermaid_businessdata color:#000, fill:#65CDE8, stroke:#65CDE8, stroke-width:0px, font-size:100%;
classDef mermaid_nonbusinessdata color:#000, fill:#B7DEE8, stroke:#B7DEE8, stroke-width:0px, font-size:100%;
classDef mermaid_entity color:#000, fill:#FB9F53, stroke:#FB9F53, stroke-width:0px, font-size:100%;
classDef mermaid_entitylinked color:#000, fill:#FCD5B5, stroke:#FCD5B5, stroke-width:0px, font-size:100%;
classDef mermaid_context color:#000, fill:#B9CDE5, stroke:#B9CDE5, stroke-width:0px, font-size:100%;
classDef mermaid_optional color:#000, fill:#B7DEE8, stroke:#65CDE8, stroke-width:1px, font-size:100%, stroke-dasharray: 5 5;
class Main mermaid_entity
class A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13,A14 mermaid_businessdata
class L1,L2,L3,L4,L5,L6,L7 mermaid_entitylinked
class C1,C2,C3,C4,C5,C6 mermaid_context
class N1,N2,N3,N4,N5,N6 mermaid_nonbusinessdata

click Main "../../business-data/sampling-plan"
click A1 "../../business-data/step"

Sequence Of Steps#

The necessary steps for correctly using a Sampling Plan are the following:

1. Create a Flow with an Evaluation Step, followed by an optional Sampling Step.
2. Create the Sampling Plan.
3. Mark the Evaluation Step as Evaluation Step and then attach the created Sampling Plan to the Step.