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Thread: Ridiculously odd question: Measuring Area

  1. #11
      RobA is offline
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    Quote Originally Posted by Rik View Post
    Excellent. Now, if someone could come up with an easy way of calculating continent-size areas on a globe ...
    How do you get a globe into your computer?

    -Rob A>

  2. #12
      waldronate is offline
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    Quote Originally Posted by Rik View Post
    Excellent. Now, if someone could come up with an easy way of calculating continent-size areas on a globe ...
    If it's a real globe - take a picture of the globe using a telecentric lens, reproject the picture area from Orthographic to any equal-area projection and measure area as described above. If you're using a regular lens on a camera then use a perspective Orthographic projection (the exact name escapes me at the moment) as the source and proceed as above.

    If it's already digital, reproject directly to an equal-area projection and measure pixels as above.

  3. #13
    Rik
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    Quote Originally Posted by RobA View Post
    How do you get a globe into your computer?

    -Rob A>
    It's all HandsomeRob's fault ...

    Quote Originally Posted by waldronate View Post
    If it's a real globe - take a picture of the globe using a telecentric lens, reproject the picture area from Orthographic to any equal-area projection and measure area as described above. If you're using a regular lens on a camera then use a perspective Orthographic projection (the exact name escapes me at the moment) as the source and proceed as above.

    If it's already digital, reproject directly to an equal-area projection and measure pixels as above.
    All good ideas. Wish I had thought of them before I started counting pixels
    Last edited by Rik; 02-13-2009 at 11:38 AM.

  4. #14
      su_liam is offline
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    You know, I'll betcha Waldronate's idea would probably work for my problem of converting icomaps to a reprojectible form. Next time I'm not in a time crunch, I'll have to try that.

    Funny. "Waldronate," "icomap," and "reprojectable," are underlined as misspellings, but, "betcha," is hunky-dory. As is, "hunky-dory."

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      Ascension is offline
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    Heh Now that's funny...I don't even look for the red line anymore cuz just about every word of mine is underlined.
    If the radiance of a thousand suns was to burst at once into the sky, that would be like the splendor of the Mighty One...I am become Death, the Shatterer of worlds.
    -J. Robert Oppenheimer (father of the atom bomb) alluding to The Bhagavad Gita (Chapter 11, Verse 32)


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    Community Leader Facebook Connected Steel General's Avatar
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    I noticed a little while ago that it doesn't like contractions, I added "didn't" to the dictionary a while ago, and just now I had to add "doesn't".
    My Finished Maps | My Challenge Maps | Ghoraja Juun, my largely stagnated campaign setting.

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