Hi Adam,
About a weight column in nodes table, it is not an existing column so String is used by default.
But I think the type of any column could be automatically detected for some types, and still let the user choose of course.

The second point could be done by selecting edge table if source and target columns are found, yes.

I will work on these, thanks for the ideas.
Eduardo

As this is still open, can I just submit a suggestion? When detecting column types, maybe, we also could implement some heuristics and use the column names to detect whether the spreadsheet represents nodes or edges. "Source" and "Target" or "From" and "To" clearly represent edges, while a spreadsheet with less than three columns only can contain nodes.

This is being implemented in #1282 :)

Can you please try the latest nightly build (https://github.com/gephi/gephi#nightly-builds)? It should include these changes

I can confirm that the nightly build works at importing CSVs in the matrix format

Great!