Sets or updates the y_height metadata field, which records the height of
the recording frame in y-axis units. Used by set_origin() when reflecting
y coordinates between origin conventions (e.g. bottom_left <-> top_left).
Reader functions in aniread populate y_height automatically from the
source (e.g. video frame height). For aniframes constructed manually,
as_aniframe() falls back to max(y). Use this function to set the true
frame height when the auto-fallback is not appropriate.
Examples
if (FALSE) { # \dontrun{
data <- example_aniframe()
data <- set_y_height(data, y_height = 1080)
} # }