Description

Allows node-by-node control of node ellipse drawing with a draw.nodes column in the tree input data frame. This was previously handled globally with an argument of the same name on SRCGrob. Also includes unit-tests and new examples in the package manual and User Guide vignette.

Example

nodeless <- data.frame(
    parent = c(
        NA, 1, 2, 2, 2, 
        3, 3, 3, 
        4, 4, 4, 4, 4, 
        5, 5, 5, 5
        ),
    draw.node = TRUE,
    spread = NA
    );
nodeless$spread[6:nrow(nodeless)] <- 0.6;
nodeless$draw.node[c(2, 6:nrow(nodeless))] <- FALSE;

grid.draw(SRCGrob(nodeless));

Checklist

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• The name of the branch is meaningful and well formatted following the standards, using [AD_username (or 5 letters of AD if AD is too long)]-[brief_description_of_branch].

• I have added the major changes included in this pull request to the CHANGELOG.md under the next release version or unreleased, and updated the date.