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#1
David Medeiros

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I need to make a simple globe graphic and would like to play around with centering or rotation. My Avenza documentation lists a few projections that would work (orthographic, vertical perspective), I can't find the vertical projection in map view and I'm not sure how to adjust the orthographic properly.

Is there an online tutorial for working with MAPub projections? I don't see one on there site.

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#2
Hans van der Maarel

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When I need to make a globe I just drape a lat/lon image over a sphere. I've written a tutorial for that but it must have gone missing in the big website redesign, so I'll post it here from the backup:

The following steps will guide you through the creation of a vector globe in Adobe Illustrator.

  • Create, or find, a world map in vector format. Creating one yourself would obviously be the best choice because it gives you full control over how it looks. If that's not an option, try a clip-art site to see whether there is a royalty-free file available. Make sure it covers the entire range, from pole to pole! If the file does not contain Antarctica, or if Greenland hits the top edge of the file, it's not suitable.
  • Make sure the map is in "geographic lat/lon" projection, also known as "WGS84". An easy way to check this is to measure it. If the width of the total map is twice the height, it's good. I've used the MAPublisher Graticule option to add a graticule covering the entire earth.
    Attached File  globe_1.jpg   76.91KB   58 downloads
  • Select your entire map and create a new symbol out of it by dragging it to the Symbols palette. Next, remove the map from the document (but leave the copy in the Symbols palette.
  • Draw a circle, do not assign a stroke to it but give it a fill color. If your map does not have sea in it, this fill color will be what you see in areas where there's no land.
  • Take the direct selection tool (white arrow) and delete the left anchor point of the circle. This will give you a semicircle.
    Attached File  globe_2.jpg   5.01KB   54 downloads
  • Select the semicircle and go to the 3D Revolve Options (Effect -> 3D -> Revolve)
    Attached File  globe_3.jpg   61.58KB   56 downloads
  • Click the Map Art button and select the map symbol you've just created. Now either drag its handles so it covers the entire sphere, or simply click the Scale to Fit button.
    Attached File  globe_4.jpg   58.08KB   58 downloads
  • OK all the dialogs and you'll have your globe. By dragging the cube you see in the 3D Revolve Options, you can look at any part of the globe you like. Once you're happy with it, expand the appearance (this will facilitate exporting).
    Attached File  globe_5.jpg   60.83KB   63 downloads

Do keep in mind that this method is rather processor-heavy. It's probabely a good idea to remove unnecessary detail from your map, such as tiny islands and complex coastlines, before attempting this.
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics

#3
natcase

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That is seriously cool, Hans.

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#4
Andrew Patterson

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That is seriously cool, Hans.


Agreed, that's pretty damn cool.
Andrew Patterson
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Avenza Systems Inc.

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phone: 416.487.5116

#5
CHART

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Try

http://www.blog.spoo...obe-illustrator

Pretty close to what Hans is showing.
Chart

#6
Andrew Patterson

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Pretty close to what Hans is showing.


That's pretty much exactly the same thing, except Hans' uses MAPublisher instead of pre-published vectorizations of the world :) The main advantage of using MAPublisher in this case would if you wanted to overlay some data and/or add graticles.

Incidentally, I was just giving this a whirl and thought I'd try out some of MAPublisher 8.4's new toys in conjunction and I got this:

Attached File  globe.png   320.33KB   68 downloads

Pretty cool indeed!
Andrew Patterson
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Avenza Systems Inc.

email: andrew@avenza.com
phone: 416.487.5116

#7
David Medeiros

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Cool technique indeed! This one goes in the "tutorials" folder.

I haven't tried it yet but I am assuming that if I want a simple globe graphic, no 3d effect I can remove the underlying sphere or make it no fill or stroke?

I still need to understand more about howe MAPub does projections though. For larger world maps that I want to rotate or recenter on different longitudes for example.

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www.mapbliss.com

 


#8
Hans van der Maarel

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I still need to understand more about howe MAPub does projections though. For larger world maps that I want to rotate or recenter on different longitudes for example.


Depending on the projection, you can make a copy of the projection definition and change parameters (central meridian etc)
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics

#9
Hans van der Maarel

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That's pretty much exactly the same thing, except Hans' uses MAPublisher instead of pre-published vectorizations of the world :)


Most of the pre-published world maps don't go all the way to the North Pole (since they show landmasses and the North Pole is sea), which is crucial if you want to make a proper globe.
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics




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