count-tally-SpatVector.md
In tidyterra: 'tidyverse' Methods and 'ggplot2' Helpers for 'terra' Objects

name must be string

Code
  count(df1, x, name = 1)
Condition
  Error in `dplyr::tally()`:
  ! `name` must be a single string, not the number 1.

Code
  count(df1, x, name = letters)
Condition
  Error in `dplyr::tally()`:
  ! `name` must be a single string, not a character vector.

.drop argument deprecated

Code
  res <- count(df, f, .drop = FALSE)
Condition
  Warning:
  The `.drop` argument of `count.SpatVector()` is deprecated as of tidyterra 1.1.0.
  i Argument not longer supported; empty groups are always removed(see `dplyr::count()`, `.drop = TRUE` argument).

can only explicitly chain together multiple tallies

Code
  df <- data.frame(g = c(1, 1, 2, 2), n = 1:4)
  df$lat <- 1:4
  df$lon <- 1:4
  df <- terra::vect(df, crs = "EPSG:3857")
  count(df, g, wt = n)
Output
   class       : SpatVector 
   geometry    : points 
   dimensions  : 2, 2  (geometries, attributes)
   extent      : 1, 4, 1, 4  (xmin, xmax, ymin, ymax)
   coord. ref. : WGS 84 / Pseudo-Mercator (EPSG:3857) 
   names       :     g     n
   type        : <num> <int>
   values      :     1     3
                     2     7
Code
  count(count(df, g, wt = n), wt = n)
Output
   class       : SpatVector 
   geometry    : points 
   dimensions  : 1, 1  (geometries, attributes)
   extent      : 1, 4, 1, 4  (xmin, xmax, ymin, ymax)
   coord. ref. : WGS 84 / Pseudo-Mercator (EPSG:3857) 
   names       :     n
   type        : <int>
   values      :    10
Code
  count(df, n)
Message
  Storing counts in `nn`, as `n` already present in input
  i Use `name = "new_name"` to pick a new name.
  Storing counts in `nn`, as `n` already present in input
  i Use `name = "new_name"` to pick a new name.
Output
   class       : SpatVector 
   geometry    : points 
   dimensions  : 4, 2  (geometries, attributes)
   extent      : 1, 4, 1, 4  (xmin, xmax, ymin, ymax)
   coord. ref. : WGS 84 / Pseudo-Mercator (EPSG:3857) 
   names       :     n    nn
   type        : <int> <int>
   values      :     1     1
                     2     1
                     3     1