Hello,
I've found a couple references to "wraparound" -- specifically in the JavaDocs
as an option on RangeMeaning -- but I've not been able to find any example of
how to employ it, or even if it's the right tool for the job I want to do.
Specifically, I am trying to do two things. Using the Natural Earth countries
shapefile, I would like to:
1) Render a map that has Japan on the left side of the image and the west coast
of USA on the right side of the image, so that the map is centered on the
Pacific Ocean. That is, I want the left border of my rendered image to be
125E longitude and the right border to be 120W longitude. (125.0 to -120.0)
2) Add features -- LineStrings, specifically -- that start at eastern
longitudes (e.g. Japan) and end at western longitudes (e.g. USA), crossing
over the "edges" of the base shapfile and wrapping around to the other edge
to continue.
At the moment I'm hung up on #1 before I attempt #2. Starting with the
Quickstart tutorial, I can draw the countries shapefile on screen, and adapt the
tutorial to save the rendered image to disk as a PNG file. But if I use the
toolbar button to pan the image, there's just a sea of nothingness to the west
of -180 longitude and to the east of 180 instead of the geometry repeating (such
as when I pan a map with the same shapefile in GRASS).
Can somebody please point me in the right direction of adapting the Quickstart
tutorial (or one of the other tutorial projects if it's more appropriate) to
enable the sort of wraparound behavior I'm looking for? Is it even possible and
am I approaching it / talking about it in the right terms?
Thank you from a complete GeoTools newbie,
Matthew
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