Overlapping Maps

I'd like to put this out there to see if anyone has any tips for me before I try this.

Lets say I have a map that is 1800 x 1800 km.

I'm creating another map very soon for the 1800 x 1800 km section just north of this. I would however like the north 240km of my existing map to overlap (and match exactly) the south side 240km of the next map. Is there an easy way to do this without importing a render of map in as a png and tracing it?

Comments

  • I use a template I created to put maps side by side, so I can check that moutain ranges, rivers, roads, etc. match.

    Any easier way would be to insert the first map, and place it next to the new one.

    Then draw the second one, save as to a varying filename like filename001, filename002, etc. in case of errors, etc. I make map errors all the time. When done matching the edges, erase the first map from the second maps area. save as again. Then you have 2 large maps, and the edges match.
  • Okay, I've got the basics down for my northern section... with my southern section slightly overlapping. The map is 3360 x 1800. How do I trim off the bottom part so that I'm back to 1800 now?
  • RalfRalf Administrator, ProFantasy 🖼️ 18 images Mapmaker
    The hard way or the easy way? :D

    The easy way: Draw a white filled rectangle on the SCREEN sheet over the "extra" area. Zoom to the remaining visible map area. Done.

    The hard way:
    - Draw a hollow rectangle (in an easy to see color, e.g. Color 1) on the TEMP sheet (create a new one if necessary), outlining your 1800x1800 area.
    - ERASE, select All, Combine > Not, select by window. Use the temp rectangle to unselect all stuff that needs to remain.
    - You'll probably still have polygons and paths crossing over into your extra area.
    - Use TRIM TO ENTITY to trim the paths to the rectangle.
    - For polygons, you need to BREAK these outside your rectangle, then TRIM TO ENTITY them. Afterwards use PATH TO POLYGON to close them again.

    This was a very fast and rough guide. Let me know if you need more detailed instructions.
  • Hmm... yeah you lost me here. I'm going to play around and see if I can find an easier way. But I'm willing to give this a try again.
  • Is there any handy guide anywhere on how to use Trims? That seems to be what I need to figure out.
  • The "hard way" is exactly what I need to do a similar procedure (thanks Ralf!). In my case I am taking a large scale map and zooming in by quadrant to the detail views that I want to have. I really want the separate map zoomed in views to match as closely as possible. In particular the PATH TO POLYGON to close broken and trimmed polygons will save me a lot of time (I was using -node a zillion clicks).
  • JimPJimP 🖼️ 280 images Cartographer
    edited April 2011
    The other hard way, the one I use, is to do a 'save as' of 'rectangular bmp' for a selected map area, the zoom in.

    1) Draw a hollow square or rectangle enclosing the area i want to zoom in on.

    2) add text of its length and width on the inside of the square or rectangle.

    3) save as a rectangular bmp using the hollow square, etc. as a guide.

    4) load a template of the same size as the rectangular bmp I just made. Or load a template of just larger and adjust it by moving the map border, etc.

    5) Insert the rectangular bmp on a new layer called bmp. Makes it easy to remove the bmp later.

    6) using the locations of the mountains, rivers, symbols, etc. on the bmp, draw the new map. I don't use the trace thing, my eyes don't see it that well.

    7) Important: save as often. Maps I do this way typically have 30 to 100 maps along the way to completion. I don't think there is an average number when I do this.
  • jaerdaphjaerdaph Traveler
    You can read more about the various Trim commands in CC3 online help:

    http://www.profantasy.com/cchelp/hlp_cnc_trims.htm
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