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:
First, select the first line into which you want to paste your data:
While not as good as having full flexibility in how you input your data, it's better than nothing.