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Function to Animate a list of maps generated with either plot_territories or plot_forage_density

animate_maps.Rd

This function generates an animation between map time steps to visualise change over time using the magick package.

Usage

animate_maps(
  map_list,
  filename = NULL,
  x_pix = 1200,
  y_pix = 675,
  pix_res = 96,
  n_frames = 10,
  fps = 5
)

Arguments

map_list

A list of ggplot objects generated with either plot_territories or plot_forage_density

filename

character string for the save path if saving to disk is required.

x_pix

numeric denoting width of the animation canvas in pixels

y_pix

numeric denoting height of the animation canvas in pixels

pix_res

numeric denoting canvas resolution

n_frames

numeric for the number of frames to use for transitions

fps

numeric for the number of frames per second for the resulting animation

Value

Animated map of esither territory locations over time or feeding density over time.

Examples


if (FALSE) {
# kde plots for panel/animation
fsd_ggplot <- function(.data, p.names, p.ext, add_map_stuff= FALSE){

 if (isTRUE(add_map_stuff)){
   fsd <- plot_forage_density(.data, guide = FALSE, catchment = RivOtter_Catch_Area,
                              rivers = TRUE, plot_extent = p.ext, axes_units = FALSE) +
     ggplot2::labs(subtitle = sprintf('Beaver Foraging Density: %s', p.names))
 } else {
   fsd <- plot_forage_density(.data, axes_units = FALSE, north_arrow = FALSE, scalebar = FALSE, guide = FALSE,
                              catchment = RivOtter_Catch_Area, rivers = TRUE, plot_extent = p.ext) +
     ggplot2::labs(subtitle = p.names)
 }

 return(fsd)
}

# get name list for plots
plot_names <- unique(RivOtter_FeedSigns$SurveySeason)

ras_ext <- inflate_bbox(RivOtter_FeedSigns, 250)

# generate KDE rasters for all survey periods
kde_ras_list <- RivOtter_FeedSigns %>%
  dplyr::group_by(SurveySeason) %>%
  dplyr::group_map(., ~forage_density(., 'FeedCat', kd_extent = ras_ext))

# animate kernel density rasters
kde_animation <- kde_ras_list %>%
purrr::map2(.x=., .y=plot_names, ~fsd_ggplot(.x, .y, inflate_bbox(RivOtter_Catch_Area, 200),
  add_map_stuff = TRUE)) %>%
  animate_maps(.)
}