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    Re: 3D Analemma
    From: Stephen Wawrzyniec
    Date: 2016 Jul 8, 12:07 -0600
    Fun, in an intense, patience honing sort of way.....
    I used to be like that a lot, need to get it back some. Maybe the world wont suck so much any more, or I'll just remember to noty let the suck bother me....

    On Fri, Jul 8, 2016 at 3:28 AM, Sean C <NoReply_SeanC@fer3.com> wrote:


    You asked:

    What program?

    I used two programs, actually. I couldn't believe how difficult it was to find an application to do this seemingly simple task. A Google search returned a list of programs, but few were free or even reasonably priced. One cost more than US$600!! Finally, I found a free sample Excel spreadsheet called "Excel3DScatterPlot" which uses macros to accomplish what Excel cannot do natively. It allows you to paste your data in and customize how it's displayed. It's a bit tricky to use, but quite clever. (Well beyond my ability, anyway.)

    To animate the plot, I used Adobe PhotoShop CS3 to make a .gif out of multiple screenshots of the plot in the various perspectives. A laborious task, to be sure. But, I suppose any program capable of making .gifs would be up to the task. Some may be better suited than others. PhotoShop is just what I am accustomed to using.


    Sean C.

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