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pedMermaid

R package pedMermaid generates Mermaid syntax for creating a pedigree flowchart in Markdown and R Markdown, from a pedigree data frame.

Installation

You can install the development version of pedMermaid like so:

devtools::install_github('nilforooshan/ggroups')

Example

This is a basic example of a pedigree flowchart created by the Mermaid syntax generated by the R package pedMermaid.

library(pedMermaid)
ped <- data.frame(ID = 1:7,
                  SIRE = c(0, 0, 1, 0, 3, 0, 5),
                  DAM = c(0, 0, 2, 2, 4, 0, 6))
x <- mermaid_md(ped)
# cat(x, sep = "\n") # Display the output syntax on-screen

flowchart TB
    1 & 2 --> 3
    2 --> 4
    3 & 4 --> 5
    5 & 6 --> 7

R package pedMermaid is equipped with functions mermaid_md and mermaid_rmd for generating Mermaid flowchart syntax for Markdown and R Markdown, respectively. The syntax generated by mermaid_rmd is also applicable to Markdown. However, the syntax is more restricted (less customizations) and less compact. The mermaid_md function provides the following customizations:

• Links
  • Orientation (top-to-bottom or left-to-right)
  • Type (arrow or line)
  • Curve (not supported by mermaid_rmd)
  • Dash (dashed or solid) (not supported by mermaid_rmd)
  • Line width (not supported by mermaid_rmd)
  • Color (not supported by mermaid_rmd)
• Nodes (node-specific)
  • Text color (not supported by mermaid_rmd)
  • Background color
  • Border color
  • Round border
  • Dashed (or solid) border
  • Line width of the border

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.