Thanks Joe!!!
Thats a great tut!
While editing, I ended up with a section that had like a big vertical gash in it, like a glitch...is there a way to prevent that?
Thanks Joe!!!
Thats a great tut!
While editing, I ended up with a section that had like a big vertical gash in it, like a glitch...is there a way to prevent that?
All Hail FlappyMap! Long Live MapFeed!
Robbie Powell - Site Admin
Here's another gash...Its messing up my mojo.
Is it the edge of the world??? Since I rotated it a little to center the land masses in equirectangular projection?
All Hail FlappyMap! Long Live MapFeed!
Robbie Powell - Site Admin
Try to avoid the +180/-180 boundary on the world; there may be unresolved editing issues there for one pixel of width. There is also a known problem with certain operation (divide and exponent, if I recall) that can generate infinite values and the software doesn't clip those out so they propagate forever unless you select the area and set the value.
If your area of primary interest is across the +180/-180 boundary and that's the part that is causing you problems, you can rotate the fractal part of the world relative to the underlying edit grid using North Pole Position.Longitude on the Secondary editing page on the World Settings property sheet.
The first picture shown below gives a world with a bad split right across the only land mass. The second picture shows the same world with the fractal part rotated 180 degrees so that the land mass is centered on 0 longitude rather than 180 longitude. Note that doing this doesn't move your editing.
Excellent...I managed to work around it...luckily for me I was able to 1 pixel edit everything near it and fixed all the big gaps...Though I hope when I get to the erosion and smoothing and rivers and whatnot, that edge won't cause me any grief...I've done WAY too much editing to change the north pole position now...unless you have any other ideas?
I decided to go with a different world. Here's a picture so far with all the editing I've done...I'm currently going around all the coastlines and getting rid of all the little coastal seas. Still more work to do...that tutorial is VERY helpful though.
All Hail FlappyMap! Long Live MapFeed!
Robbie Powell - Site Admin
Got to the rivers part, and the edge problem seems to have reared its ugly head...bleh...any ideas now? left side of the two weird river lines is where the edge is...
Whats weird is if I zoom in so that both sides of the two weird lines aren't visible, the problem goes away...I'm guessing its a river vector problem?
Edit: Rerunning rivers with very fine resolution fixed the problem...nevermind...yay! Moving on.
Last edited by Robbie; 06-09-2008 at 02:10 AM.
All Hail FlappyMap! Long Live MapFeed!
Robbie Powell - Site Admin
The problem with horzontal lines is a problem when subdividing the line segments to deal with the potentially curved projection. Using a projection with curved parallels should hide the problem that comes up sometimes as the horizontal lines as does recomputing the rivers at a slightly different resolution.
I dislike the default Equirectangular projection. I recommend the Hammer projection as a nice compromise projection. Also consider the Wagner VII projection or Orthographic (which looks like a globe viewed from infinity). Every projection has a purpose, you need to find one you like that meets your needs and use it.
Yeah I figured out the situational stuff with the river error...no big deal...Only thing I'd use equirectangular for woul dbe for a google maps api overlay...
Or is Google maps a different projection than equirectangular? Since its square...maybe google maps is mercator?
All Hail FlappyMap! Long Live MapFeed!
Robbie Powell - Site Admin
I have been looking at the Google Maps things lately and they appear to be using Mercator as the default projection, which is quite unfortunate as the Mercator projection is a navigation projection and not well suited for general use. (As an aside, Mercator-projection maps are popular only because there was a large surplus of them at the end of WWII and they made their way into schools because they were very cheap to obtain).
At first glance it appears that there might be a way to use different projections, but I need to look at the whole area in more detail in my copious free time.