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lessons from the Aleutians #8

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mdsumner opened this issue Jul 4, 2017 · 0 comments
Open

lessons from the Aleutians #8

mdsumner opened this issue Jul 4, 2017 · 0 comments

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@mdsumner
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mdsumner commented Jul 4, 2017 •
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  • in/out extent specification
  • graticule across dateline problem
  • juggling projection metadata objects
  • misunderstandings of source/target, graticule as long/lat, vs. projected
  • role of asp/ ratio
  • what does the projected end point look like versus 170, 180, -180, -170 etc. (i.e. implicit wrap confusion)
  • role of spTransform as a high level on project(xy, inv = TRUE/FALSE)
  • the seam in continent at -180/180 (removed with ms_simplify/gUnionCascaded
  • North arrows are of limited utility
    -relationship between plot(extent, asp = 1) and par(mar, xpd)
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