Clean up codebase for CRAN submission

[Copilot]

Removes dead code and empty files ahead of CRAN submission.

Changes

• Deleted R/meshplot.R (empty file, 0 bytes)
• Removed commented-out code from R/ximage.R:
  • Debug statements (browser() calls)
  • Obsolete function calls (elevation(), coastline(), ximage_meshplot())
  • Unused code blocks (fastpng handling, NA processing, par settings)
  • 31-line commented documentation block in ximage_sf_data()

Total: 49 lines removed across 2 files. No functional changes.

Original prompt

Problem

There are code cleanliness issues that should be addressed before CRAN submission:

1. Empty file: R/meshplot.R is completely empty (0 bytes) and serves no purpose
2. Commented-out code: Multiple sections of commented-out code in R/ximage.R should be removed for cleaner codebase

Required Changes

1. Remove Empty File

• Delete R/meshplot.R entirely (it's empty and unused)

2. Clean Up Commented-Out Code in R/ximage.R

Remove or clean up these sections:

Lines 207-211 (fastpng raw output):

  ## fastpng raw output
  # if (is.raw(x) && all(c("width", "height", "depth") %in% names(attributes(x)))) {
  #   attrs <- attributes(x)
  #   x <- aperm(array(x, c(attrs$depth, attrs$width, attrs$height)), c(3, 2, 1))
  # }

Line 140 (elevation function call):

#      x[[1]] <- as.vector(t(elevation(source = x[[1]], extent = attr(x, "extent"), dimension = attr(x, "dimension"), projection = attr(x, "projection"))))

Line 156 (coastline):

  ##if (coastline) graphics::lines(coastline(extent, projection = projection, dimension = c(512, 512)))

Line 237 (make_hex_matrix):

    #x <- .make_hex_matrix(x, cols = col )

Line 242 (commented condition):

    #if (!tt && !is.null(col)) {

Line 245 (browser):

      #browser()

Line 271 (par setting):

  ## if !add
#  par(xaxs = "i", yaxs = "i")

Line 281 (NA handling):

  #if (anyNA(x)) x[is.na(x)] <- 1

Line 282 (browser):

  #browser()

Lines 276-277 (meshplot references):

    stop("meshplot not yet supported")
    #ximage_meshplot(x, extent, add = add)

Lines 296-297 (meshplot references in nativeRaster):

    stop("meshplot not yet supported")
    #ximage_meshplot(x, extent, add = add)

Lines 316-346 (large commented block in ximage_sf_data):
The function has a large commented documentation block that should either be converted to proper roxygen comments or removed.

Expected Result

• R/meshplot.R file is deleted
• All commented-out debugging code (#browser()) is removed
• Obsolete commented-out code is removed
• Comment blocks are either converted to proper documentation or removed
• Cleaner, more maintainable codebase ready for CRAN

Files to Modify

1. Delete: R/meshplot.R
2. Clean up: R/ximage.R

This pull request was created from Copilot chat.

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