Workflow visualization has non-intuitive error for empty workflow

uptake / updraft

R package for building flexible workflows

Other

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Open mjermann opened 5 years ago

mjermann commented 5 years ago

To repro:

workflow <- DAGWorkflow$new(name="myWorkflow")

workflow$visualize()

Outputs:

Error in data.frame(id = 1:n, type = type, label = label, stringsAsFactors = FALSE) : 
  arguments imply differing number of rows: 2, 0