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Thread: Graphing program

  1. #1
    Forum Admin topsquark's Avatar
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    Graphing program

    I recently posted a graph for a post, but was disappointed because the graphing program I use (graph) doesn't do shading all that well. (I was trying to shade an area between three functions.) Graph typically works great for me, but the shading is a feature I would like. Does anyone have any suggestions for a free graphics program that can do this?

    Thanks!
    -Dan

    Edit: I know I can do graphs in Wolfram|Alpha but I would like to be able to insert a graph, not a link. Call me "old-fashioned."
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  2. #2
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    Re: Graphing program

    Dan,
    Can you provide a picture or link to what you are trying to shade?
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    Forum Admin topsquark's Avatar
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    Re: Graphing program

    Here it is. I am trying to shade the area between $\displaystyle x = 1$, $\displaystyle y = 13 - x$, and $\displaystyle y = x^2 + 1$.
    Graphing program-area.jpg

    -Dan
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    Re: Graphing program

    Dan,
    I use my own program MathpadDraw to produce all the pictures that I post. You can download for free the program from Download Trial Version. (Contrary to the title of the page, this download is not the trial edition, but the complete program.) As with any software, it takes a while to learn to use the program. Since I wrote it, I know the program very well and can produce the pictures pretty rapidly. For some reason, inserting an image directly from the MHF editor is not as good as first uploading the image to tinypic.com.

    Here's the shaded area that you wanted together with some annotations:

    Thanks from topsquark
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    Forum Admin topsquark's Avatar
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    Re: Graphing program

    Thanks, I'll give it a whirl.

    By the way, one of the best file formats to upload is a jpeg. I've never had any trouble with them.

    -Dan
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