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HP Forum Archive 17

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Graphing functions..
Message #1 Posted by PhysicsNerd on 7 May 2007, 10:50 p.m.

Okay, I have a bunch of equation in my STORED Plot-function window Y1-Y11 but I only have 1 equation actually highlighted in present in the Plot-Function window itself. How come when I press draw it draws 3 of the functions, 1 of which is the one in my window and the others that are stored but not present in the window? What do I have to do to get my calc to graph 1 function only? Also, how do you delete the stored functions? Thanks

Re: Graphing functions..
Message #2 Posted by James M. Prange (Michigan) on 8 May 2007, 1:45 a.m.,
in response to message #1 by PhysicsNerd

I rather seldom use the graphing features of the RPL models, so I'm not, offhand, certain of correct answers to your questions. I suppose that I could do a bit of research and find out easily enough, but on the other hand, you could do that.

Have you tried reading the fine documentation?

Or maybe there's a "training module" about graphing?

Or you could try an advanced search of the comp.sys.hp48 usenet group from

If you don't find an answer, then you could try posting a question to the newsgroup. In case you don't already use a newsreader, you should be able to access it from

Please be sure to include which model you're talking about with your question.


Re: Graphing functions..
Message #3 Posted by Happy HP User on 8 May 2007, 9:49 a.m.,
in response to message #1 by PhysicsNerd

There are several ways to do this:

When in Plot - Function, (LeftShift hold F1), just ERASE the functions you don't want plotted. Or, when in Plot SetUp, (LeftShift hold F4), edit the EQ list. From either screen, clear the old plot and redraw with ERASE DRAW.

You can also call up the old HP48 commands. Type 81 MENU (with flag 117 set: -117 SF) and you get the complete HP48 plot menu.

Re: Graphing functions..
Message #4 Posted by ECL on 9 May 2007, 9:37 p.m.,
in response to message #1 by PhysicsNerd

I hesitate, at the risk of sounding superior (which I don't intend), to say this:

Spend some time reading whatever literature you have at hand, even consider downloading the manual (from HP's site). The RPL machines are not the most straightforward, yet once you become accustomed to the machinery it will express you forward.

I found that by resisting expressing frustration at every corner and instead just learning (accepting that I wasn't in command), I had a fairly easy time picking the system up.

Have fun:)

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