class_docstr: Base class for formatting ticks on geographical axes using a
  rectangular projection (e.g. Plate Carree, Mercator).
class_docstr_tok: ["Base","class","for","formatting","ticks","on","geographical","axes","using","a","rectangular","projection","(","e.g",".","Plate","Carree",",","Mercator",")","."]
docstr: Format minutes as an integer
code: def _format_minutes(self, mn):
      """Format minutes as an integer"""
      return f"{int(mn):d}{self._minute_symbol}"
  
imports: import matplotlib
  from matplotlib.ticker import Formatter, MaxNLocator
  import numpy
  import cartopy.crs
  from cartopy.mpl.geoaxes import GeoAxes
label_desc: Use image node_id 8 for calling the _PlateCarreeFormatter obj's underlying member method code with example usage: obj._format_minutes(mn) and returns: int, self