_encode_strings(self) -> 'None'
Do not encode columns marked for date conversion or for strL conversion. The strL converter independently handles conversion and also accepts empty string arrays.
Encode strings in dta-specific encoding
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Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)
SVG is more flexible but power hungry; and does not scale well to 50 + nodes.
All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them