How do I make a graph?

[WhiteWeasel]

For no reason I decided to make a graph that compares the the atmospheres of all the planets, like this one:

What type of graph is it and how do I make it?

[pxi]

That looks a lot like a graph produced by the gnuplot package.

As for getting the data, you might have some success using the Graphotron 2000 mod, and exporting the data in csv format.

[WhiteWeasel]

That looks a lot like a graph produced by the gnuplot package.

As for getting the data, you might have some success using the Graphotron 2000 mod, and exporting the data in csv format.

I hope that's not gnuplot, how are you supposed with a text window?

[pxi]

I hope that's not gnuplot, how are you supposed with a text window?

Not 100% sure what you're actually asking here. You don't necessarily have to run gnuplot from the command-line, although the scripting format is relatively easy to get your head around once you've done it a couple of times. Just to give you an idea of how powerful gnuplot is, I once wrote a little script to give me a decent visual display of some ideas I was prototyping in PHP - it was easier than working through the myriad of issues I had getting PHP's implementation of GTK to work:

There are a few programs available that will give you a gui frontend for gnuplot too. Of course you could also go with MS Excel or LibreOffice Calc for plotting the graph itself.