Build a diagram of a optree pipeline.

Build a diagram of a optree pipeline.

op_diagram(optree, ..., merge_tables = FALSE, show_table_columns = TRUE)

Arguments

optree	operation tree pipeline (or list of such).
...	force other argument to be by name.
merge_tables	logical, if TRUE merge all same table references into one node. rel_op nodes that declare a materialize_as name will be cross-linked.
show_table_columns	logical, if TRUE show table columns.

Value

character DiagrammeR::grViz() ready text.

Examples

d <- mk_td('d',
             columns = qc(AUC, R2))
optree <- d %.>%
  extend(., v %:=% ifelse(AUC>0.5, R2, 1.0)) %.>%
  quantile_node(.) %.>%
  natural_join(., d, jointype = "LEFT", by = "AUC") %.>%
  orderby(., "AUC")

cat(format(optree))
#> mk_td("d", c(
#>   "AUC",
#>   "R2")) %.>%
#>  extend(.,
#>   v := ifelse(AUC > 0.5, R2, 1)) %.>%
#>  non_sql_node(., quantile_node(.)) %.>%
#>  natural_join(.,
#>   mk_td("d", c(
#>     "AUC",
#>     "R2")),
#>   jointype = "LEFT", by = c('AUC')) %.>%
#>  order_rows(.,
#>   c('AUC'),
#>   reverse = c(),
#>   limit = NULL)

cat(op_diagram(optree))
#> 
#> digraph rquery_optree {
#>   graph [ layout = dot, rankdir = TB, overlap = prism, compound = true, nodesep = .5, ranksep = .25]
#>   edge [decorate = true, arrowhead = normal]
#>   node [style=filled, fillcolor=lightgrey]
#> 
#> node_1 [ shape = 'folder' , fillcolor = 'chartreuse3' , label = 'mk_td(d, c(\l  AUC,\l  R2))\l']
#> 
#> node_2 [ shape = 'box' , fillcolor = 'khaki3' , label = 'extend(.,\l  v := ifelse(AUC > 0.5, R2, 1))\l']
#> 
#> node_3 [ shape = 'box' , fillcolor = 'khaki3' , label = 'non_sql_node(., quantile_node(.))\l']
#> 
#> node_4 [ shape = 'folder' , fillcolor = 'chartreuse3' , label = 'mk_td(d, c(\l  AUC,\l  R2))\l']
#> 
#> node_5 [ shape = 'box' , fillcolor = 'khaki3' , label = 'natural_join(.1, .2,  j= LEFT, by= AUC)\l']
#> 
#> node_6 [ shape = 'box' , fillcolor = 'khaki3' , label = 'order_rows(.,\l  c(AUC),\l  reverse = c(),\l  limit = NULL)\l']
#> node_1 -> node_2 [ label = '.']
#> node_2 -> node_3 [ label = '.']
#> node_3 -> node_5 [ label = '.1']
#> node_4 -> node_5 [ label = '.2']
#> node_5 -> node_6 [ label = '.']
#> }

if(requireNamespace("DiagrammeR", quietly = TRUE)) {
  optree %.>%
    op_diagram(., merge_tables = TRUE) %.>%
    DiagrammeR::grViz(.) %.>%
    print(.)
 # # or to render to png
 # optree %.>%
 #   op_diagram(., merge_tables = TRUE) %.>%
 #   DiagrammeR::DiagrammeR(diagram = ., type = "grViz") %.>%
 #     DiagrammeRsvg::export_svg(.) %.>%
 #     charToRaw(.) %.>%
 #     rsvg::rsvg_png(., file = "diagram1.png")
}