Making a graph on a mac

Discussion in 'Mac Basics and Help' started by alielizadubois, Apr 21, 2007.

  1. alielizadubois macrumors member

    Joined:
    Feb 25, 2007
    Location:
    Brooklyn, NY
    #1
    I would like to plot a graph (from scratch). I would like it to be a line graph, in a "u" shape, and I would like to plot names along the graph.

    Can anyone help me?
     
  2. discoforce macrumors 6502a

    discoforce

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    Jan 27, 2004
    Location:
    Vermont, USA
    #2
    I know next to nothing about the free mac program "grapher", but this will be the second time I recommend it here in the past few minutes. I just created this which sounds like what you want:
     

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  3. Richard Flynn macrumors regular

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    Sep 4, 2006
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    Sydney
    #3
    (And to clarify, Grapher is installed on all Macs, in Applications > Utilities)
     
  4. alielizadubois thread starter macrumors member

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    Feb 25, 2007
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    Brooklyn, NY
    #4
    This is almost what I am looking for.

    I would like it to be inverted, with the vertex on the bottom, not on the top, and with the vertex a bit deeper....

    Can you help me?

    What did you create that graph with?
     
  5. discoforce macrumors 6502a

    discoforce

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    #5
    The graph was created using Grapher, which is installed on all macs with 10.4 (it's in your utilities folder).

    Regarding the shape of the curve, you just need the correct equation. Try y=x^2 (i.e., x-squared).
     
  6. alielizadubois thread starter macrumors member

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    Feb 25, 2007
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    Brooklyn, NY
    #6
    Thank you soooo much! (Im a math dummy!)

    Now, my next question is...

    I would like to add names along the graph, as labels to plotted points, in a way.
    Do you have any suggestions?
     
  7. discoforce macrumors 6502a

    discoforce

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    #7
    You can add text by choosing "Object" then "Insert Text" You can then move it anywhere.

    EDIT: That's what I used to add the text "Name of bell curve" on the graph in my first post.
     
  8. alielizadubois thread starter macrumors member

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    Brooklyn, NY
    #8
    I am probably so annoying, but how did you get the bell curve, and is there anyway that i can invert it, so it looks like a u, but exactly like that one????
     
  9. ljump12 macrumors 6502

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    Jun 10, 2006
    Location:
    philadelphia
    #9
    y=sin(x-1.5)+1
     
  10. slooksterPSV macrumors 68030

    slooksterPSV

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    #10
    (e^((x^2)/2))/sqrt(2pi)
    then just make that negative and bam you have a bell curve
    or if you need to modify its size, here's a general equation
    ae^((x^2)/2)/sqrt(2pi)
    where a is how tall to make the bell curve
     
  11. ljump12 macrumors 6502

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    philadelphia
    #11
    ^^kickass
     
  12. discoforce macrumors 6502a

    discoforce

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    Jan 27, 2004
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    #12
    I couldn't even get Grapher to read that :p
    EDIT: Okay, now I did.

    How about y = x^2 That's usually what I think of for a "U" shaped curve (you can change the shape by multiplying or dividing by a constant: y=2x^2 or y=1/2 x^2)

    Play with it some; do some google searches for curve equations and you'll find some good ones.
     
  13. slooksterPSV macrumors 68030

    slooksterPSV

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    #13
    I just did a google search for Bell Curve Equation
     
  14. longwood macrumors regular

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    May 10, 2005
    #14
    never knew such a thing existed. i think i will be using this quite often. thanks!
     
  15. slooksterPSV macrumors 68030

    slooksterPSV

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    #15
    I love using it for calculus to check answers and that. Cause you can do Integrals, Derivatives, Implicits, etc.
     
  16. MacDonaldsd macrumors 65816

    MacDonaldsd

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    London , UK
  17. M@lew macrumors 68000

    M@lew

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    Nov 18, 2006
    Location:
    Melbourne, Australia
    #17
    More people should know about grapher. It saved my maths assignment when I lost my calculator. :D
     
  18. slooksterPSV macrumors 68030

    slooksterPSV

    Joined:
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    #18
    Here's a tip for you guys:
    Go to Format->Layout
    Click on Size
    change it to paper size click ok, click equalize axises, then click zoom out the center.
     

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