dont install packages within functions or vignette

R/box_utils.R

@@ -1,14 +1,5 @@
 #' @export
 plot.sensebox = function (x, ..., mar = c(2, 2, 1, 1)) {
-  if (
-    !requireNamespace('sf', quietly = TRUE) ||
-    !requireNamespace('maps', quietly = TRUE) ||
-    !requireNamespace('maptools', quietly = TRUE) ||
-    !requireNamespace('rgeos', quietly = TRUE)
-  ) {
-    stop('this functions requires additional packages. install them with
-    install.packages(c("sf", "maps", "maptools", "rgeos"))')
-  }
 
   geom = x %>%
     sf::st_as_sf() %>%

vignettes/osem-history_revised.Rmd

@@ -67,10 +67,6 @@ Another feature of interest is the spatial distribution of the boxes: `plot()`
 can help us out here. This function requires a bunch of optional dependencies though.
 
 ```{r, message=FALSE, warning=FALSE}
-if (!require('maps'))     install.packages('maps')
-if (!require('maptools')) install.packages('maptools')
-if (!require('rgeos'))    install.packages('rgeos')
-
 plot(boxes)
 ```
 

vignettes/osem-intro.Rmd

@@ -49,10 +49,6 @@ Another feature of interest is the spatial distribution of the boxes: `plot()`
 can help us out here. This function requires a bunch of optional dependencies though.
 
 ```{r, message=FALSE, warning=FALSE}
-if (!require('maps'))     install.packages('maps')
-if (!require('maptools')) install.packages('maptools')
-if (!require('rgeos'))    install.packages('rgeos')
-
 plot(all_sensors)
 ```