The answer depends on the file content.
However, in general you could use the APOC procedures to visualize virtual graph from a file.
For example, if we have a file "person.csv", that is supposed to be imported with label "Person", like this:
name,surname
John,Doe
Jane,Foobar
we can execute a concatenation of apoc.load.csv and virtual nodes.
That is:
CALL apoc.load.csv("person.csv") YIELD map
WITH map // we retrieve the csv as a row of maps, so {"name":"John", "surname": "Doe"} , {"name": "Jane", "surname": "Foobar"}
CALL apoc.create.vNode(['Person'], map) // we create 2 virtual nodes from csv
YIELD node
RETURN node
