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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,64 +1,71 @@ | ||
| Coord <- proto(TopLevel, expr={ | ||
| limits <- list() | ||
| class <- function(.) "coord" | ||
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| muncher <- function(.) FALSE | ||
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| # Rescaling at coord level should not be clipped: this is what | ||
| # makes zooming work | ||
| rescale_var <- function(., data, range, clip = FALSE) { | ||
| rescale(data, 0:1, range) | ||
| } | ||
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| munch <- function(., data, details, segment_length = 0.01) { | ||
| if (!.$muncher()) return(.$transform(data, details)) | ||
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| # Calculate distances using coord distance metric | ||
| dist <- .$distance(data$x, data$y, details) | ||
| dist[data$group[-1] != data$group[-nrow(data)]] <- NA | ||
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| # Munch and then transform result | ||
| munched <- munch_data(data, dist, segment_length) | ||
| .$transform(munched, details) | ||
| } | ||
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| distance <- function(., x, y, details) { | ||
| max_dist <- dist_euclidean(details$x.range, details$y.range) | ||
| dist_euclidean(x, y) / max_dist | ||
| } | ||
|
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| compute_aspect <- function(., ranges) { | ||
| NULL | ||
| } | ||
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| labels <- function(., scales) { | ||
| scales | ||
| } | ||
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| pprint <- function(., newline=TRUE) { | ||
| args <- formals(get("new", .)) | ||
| args <- args[!names(args) %in% c(".", "...")] | ||
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| cat("coord_", .$objname, ": ", clist(args), sep="") | ||
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| if (newline) cat("\n") | ||
| } | ||
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| guide_foreground <- function(., scales, theme) { | ||
| theme_render(theme, "panel.border") | ||
| } | ||
| # Html defaults | ||
|
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| html_returns <- function(.) { | ||
| ps( | ||
| "<h2>Returns</h2>\n", | ||
| "<p>This function returns a coordinate system object.</p>" | ||
| ) | ||
| } | ||
|
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| parameters <- function(.) { | ||
| params <- formals(get("new", .)) | ||
| params[setdiff(names(params), c("."))] | ||
| } | ||
|
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| }) | ||
| #' New coordinate system. | ||
| #' | ||
| #' Internal use only. | ||
| #' | ||
| #' @param ... object fields | ||
| #' @keywords internal | ||
| #' @export | ||
| coord <- function(..., subclass = c()) { | ||
| structure(list(...), class = c(subclass, "coord")) | ||
| } | ||
|
|
||
| #' Is this object a coordinate system? | ||
| #' | ||
| #' @export is.coord | ||
| #' @keywords internal | ||
| is.coord <- function(x) inherits(x, "coord") | ||
|
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| distance <- function(., x, y, details) { | ||
| max_dist <- dist_euclidean(details$x.range, details$y.range) | ||
| dist_euclidean(x, y) / max_dist | ||
| } | ||
|
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| coord_aspect <- function(coord, ranges) | ||
| UseMethod("coord_aspect") | ||
| coord_aspect.default <- function(coord, ranges) NULL | ||
|
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| coord_labels <- function(coord, scales) UseMethod("coord_labels") | ||
| coord_labels.default <- function(coord, scales) scales | ||
|
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| coord_render_fg <- function(coord, scales, theme) | ||
| UseMethod("coord_render_fg") | ||
| coord_render_fg.default <- function(coord, scales, theme) | ||
| theme_render(theme, "panel.border") | ||
|
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| coord_render_bg <- function(coord, scales, theme) | ||
| UseMethod("coord_render_bg") | ||
| #' @S3method coord_render_bg default | ||
| coord_render_bg.default <- function(coord, details, theme) { | ||
| x.major <- unit(details$x.major, "native") | ||
| x.minor <- unit(details$x.minor, "native") | ||
| y.major <- unit(details$y.major, "native") | ||
| y.minor <- unit(details$y.minor, "native") | ||
|
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| guide_grid(theme, x.minor, x.major, y.minor, y.major) | ||
| } | ||
|
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| coord_render_axis_h <- function(coord, scales, theme) | ||
| UseMethod("coord_render_axis_h") | ||
| #' @S3method coord_render_axis_h default | ||
| coord_render_axis_h.default <- function(coord, details, theme) { | ||
| guide_axis(details$x.major, details$x.labels, "bottom", theme) | ||
| } | ||
|
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| coord_render_axis_v <- function(coord, scales, theme) | ||
| UseMethod("coord_render_axis_v") | ||
| #' @S3method coord_render_axis_v default | ||
| coord_render_axis_v.default <- function(coord, details, theme) { | ||
| guide_axis(details$y.major, details$y.labels, "left", theme) | ||
| } | ||
|
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| coord_train <- function(coord, scales) | ||
| UseMethod("coord_train") | ||
|
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| coord_transform <- function(coord, data, range) | ||
| UseMethod("coord_transform") | ||
|
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| coord_distance <- function(coord, x, y, details) | ||
| UseMethod("coord_distance") | ||
|
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| is.linear <- function(coord) UseMethod("is.linear") | ||
| is.linear.default <- function(coord) FALSE |
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