There are three related approaches that are derived from gigamapping: synthesis maps, layered scenario mapping, and metaphor maps. Common to them is that they are narrower framed than the gigamap and are more specialised towards a purpose. The gigamap is intentionally left open and general as well as process-oriented.
Synthesis Maps
Peter Jones & Jeremy Bowes
Abstract: This paper presents a framework and process for a visual language that is developing as a systemic visual method, and to integrate and outline aspects of this synthetic map formulation as the “synthesis map” both with reference to contributing authors, but also as a comparison to design principles and the method of visual design language. In this way the technique’s purpose as an emergent and creative tool – method can be illustrated, in contrast to the approaches of infographics, and other visual map making associated with design ideation, and design schema representation. Synthesis maps integrate evidence and expertise in a visual narrative for knowledge translation and communication.

Systemic Design Pedagogy, Narrative, and Intervention. Peter Jones and Jeremy Bowes, OCAD University, Toronto, Canada

CanIMPACT Clinical Synthesis Map. © 2016 OCADU Strategic Innovation Lab (Jones P. and Bowes J. 2016).

Layered Scenario Mapping
By Sigrun Lurås PhD
Layered scenario mapping is used to gain insight into the ‘situation one designs for. It is a systemic technique and emphasises presenting information in different layers going from an overview to very detailed information. The technique proposes a structured approach to collecting and presenting data and provides a template for sorting and presenting the data in a layered manner hierarchically, spatially, and temporally.
Metaphor maps
National Institute of Design
At the National Institute of Design in Ahmedabad, India, they have developed a tradition of gigamapping that is quite characteristic. It is recognised by its vivid use of metaphors, making these maps immediately accessible. In this example, a group of students under the guidance of Professor Praveen Nahar and Sahil Thappa pulled apart the notion of empathy and revealed it as a system of its own.

Swayamsiddha, Shefali, Awaee, Supreethe, Vaidehie. NID, Ahmedabad, India