Making multiline strings to address international date line

[smit1678]

@springmeyer

I want to ping you on the international date line issue and see if there is a possible solution by using MultiLineStrings. Is it possible to create multiline strings when an arc crosses the date line?

Another issue with breaking into two lines is the gap that is formed between the two points that cross the date line. Is it also possible to create two points, along the arc, that would be just offset from the date line? So when the line is broken, create two points, at -179.99 and +179.99 at the appropriate latitude?

Example of a line: https://gist.github.com/39ab121a3e225c516885

[springmeyer]

ya, one sec :)

[springmeyer]

@smit1678 & @tristen - give that a shot ^^.

[springmeyer]

see #4 (comment) for some examples

[springmeyer]

ping @smit1678 - did you ever have a chance to try this ^^?

[smit1678]

@springmeyer yes, sorry I didn't respond here. This work flawlessly for about 5,000 lines. I need to do a bit more testing to determine exactly but it seems there might be some bugs when getting over that. I saw a few edge cases where they were not being split into multi linestrings. I will post some more details here and keep this ticket open.

[springmeyer]

@smit1678 - okay, thanks for the update. I've not really considered how this code would perform for lots of lines, so we may need to test that more. I'm going to close this issue. Please re-open another on perf/memory usage when you get there.