Expression Search Example 2: scenario hierarchy with multiple inheritance

This guide explains how the Low Emissions Analysis Platform (LEAP) handles expression search in a scenario hierarchy featuring multiple inheritance, specifically when a mitigation scenario is composed of multiple sectoral packages.

• In a scenario hierarchy with multiple inheritance, LEAP follows a specific sequential search process to find a variable expression. It first checks the active scenario, then checks additional scenarios listed in the 'First Inherits From' box in the order they appear, and finally walks up the main scenario tree toward the Baseline and Current Accounts scenarios before reverting to a default value.
• For a mitigation scenario structured as a package of industry, buildings, and transport sectors, the full expression search order is: Mitigation, Industry, Buildings, Transport, Baseline, Current Accounts, and finally the Default Value.

APA

Stockholm Environment Institute (n.d.). Expression Search Example 2: scenario hierarchy with multiple inheritance. https://leap.sei.org/help24/Concepts/Expression_Search_Examples/Copy_of_Expression_Search_Example_Two.htm

Chicago

Stockholm Environment Institute. Expression Search Example 2: scenario hierarchy with multiple inheritance. n.d. https://leap.sei.org/help24/Concepts/Expression_Search_Examples/Copy_of_Expression_Search_Example_Two.htm.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=Expression Search Example 2: scenario hierarchy with multiple inheritance |url=https://leap.sei.org/help24/Concepts/Expression_Search_Examples/Copy_of_Expression_Search_Example_Two.htm |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitutendexpression, author = {{Stockholm Environment Institute}}, title = {{Expression Search Example 2: scenario hierarchy with multiple inheritance}}, institution = {Stockholm Environment Institute}, url = {https://leap.sei.org/help24/Concepts/Expression_Search_Examples/Copy_of_Expression_Search_Example_Two.htm}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }