Using projection with xlim / ylim in R with the "maps" package leads to an increase in the map

Question

I use R with the maps / mapproject / maptools packages to build some maps and notice a behavior that seems intuitive to me and actually limits what I can do.

Drawing a map of Europe (with limits taken from ETRS89 / ETRS-LCC , therefore without Iceland, as well as cropped in the East) without indicating the projection:

library(maps)
map("world",xlim=c(-10.67,34.5),ylim=c(31.55,71.05), interior = T)

The result will be as expected, the limits are used, and the final map follows them.

The projection used by default by maps is determined using the help:

The default is to use a rectangular projection with the aspect ratio
chosen so that longitude and latitude scales are equivalent at the 
center of the picture.

This is not a good projection for my needs, I will use the LCC projection with parallels, as indicated in the link above links to spatial reference:

library(maps)
map("world",xlim=c(-10.67,34.5),ylim=c(31.55,71.05), interior = T, projection="lambert", parameters = c(45,65))
box()

, ( ), .

, :

library(maps)
library(mapproj)
map("world",xlim=c(-10.67,34.5),ylim=c(31.55,71.05), interior = T, projection="lambert", parameters = c(45,65))
map.grid(cex=0.1 , col="grey30")
box()

, ( , , ), , ( - , , , ). , , , map().

: map/mapproj/maptools? xlim/ylim , (.. , ).

Answer 1

, , " ", , . :

xlim=c(-10.6700,31.5500), ylim=c(34.5000,71.0500)

, , .

xlim, , map() , . ( 29-31 xlim), . boundary , .

, , , . , add=T. col="white" , , .

library(maps)
library(mapproj)
map("world",regions="(?!Russia|Morocco|Algeria|Tunisia|Turkey|Ukraine)",col="white",xlim=c(-10.6600,31.5500), ylim=c(34.5000,71.0500), interior=T, projection="lambert", parameters=c(10.44,52.775))
map("world",xlim=c(-10.6600,31.5500), ylim=c(34.5000,71.0500), interior=T, projection="lambert", parameters=c(10.44,52.775),add=T)
map.grid(cex=0.1, col="grey30")
box()

, - xlim ylim, . , , .

Answer 2

"map()" xlim ylim, , , . , xlim ylim , , , , . ( xlim ylim, ). , ( ). () "", , . , mapproj , , . ( ) .

( ):

mymap <- map("world",xlim=c(-10.6600,31.5500), ylim=c(34.5000,71.0500),  projection="lambert", parameters=c(10.44,52.775), plot=FALSE)

mymap $x mymap $y:

range(mymap$x, na.rm=TRUE)

plot(mymap), , .

, , , ,

plot(mymap, type="l", asp=1,xaxt="n",yaxt="n",xlab="",ylab="", xlim=c(-0.2,0.15), ylim=c(-0.75,-0.35))

, , , . "Asp = 1" - , .