I want to be able to add graphs to keynote (such as line graphs). It seems like I have to put down the data manually in the table they give. Isn't there a way to read the data from a text file or something like that?
You can, for example, paste the data from a text file, as Keynote accepts Tab and Newline characters as field and line delimiters. Any source that provides data in this format will do, and you can even copy & paste directly from tables in
Start by copying your data into the clipboard:
(SuperUser converts my tabs to spaces, I don't think it will work if you just copy this, but you get the idea)
Foo 1 4 5 8 4 Bar 6 7 5 4 8
First, select the first line into which you want to paste your data:
Cmd-V to paste the data in the clipboard to the table:
While not as good as having full flexibility in how you input your data, it's better than nothing.