code: def test_annotate():
      """test a variety of annotate options on multiple projections
  
      Annotate defaults to coords passed as if they're in map projection space.
      `transform` or `xycoords` & `textcoords` control the marker and text offset
      through shared or independent projections or coordinates.
      `transform` is a cartopy kwarg so expects a CRS,
      `xycoords` and `textcoords` accept CRS or matplotlib args.
  
      The various annotations below test a variety of the different combinations.
      """
      # use IGH to test annotations cross projection splits and map boundaries
      map_projection = ccrs.InterruptedGoodeHomolosine()
  
      fig = plt.figure(figsize=(10, 5))
      ax = fig.add_subplot(1, 1, 1, projection=map_projection)
      ax.set_global()
      ax.coastlines()
      arrowprops = {
          "facecolor": "red",
          "arrowstyle": "-|>",
          "connectionstyle": "arc3,rad=-0.2",
      }
      platecarree = ccrs.PlateCarree()
      mpltransform = platecarree._as_mpl_transform(ax)
  
      # Add annotation with xycoords as mpltransform as suggested here
      # https://stackoverflow.com/questions/25416600/why-the-annotate-worked-unexpected-here-in-cartopy/25421922#25421922
      ax.annotate(
          "mpl xycoords", (-45, 43), xycoords=mpltransform, size=5
      )
  
      # Add annotation with xycoords as projection
      ax.annotate(
          "crs xycoords", (-75, 13), xycoords=platecarree, size=5
      )
  
      # set up coordinates in map projection space
      map_coords = map_projection.transform_point(
          -175, -35, platecarree
      )
      # Don't specify any args, default xycoords='data', transform=map projection
      ax.annotate("default crs", map_coords, size=5)
  
      # data in map projection using default transform, with
      # text positioned in platecaree transform
      ax.annotate(
          "mixed crs transforms",
          map_coords,
          xycoords="data",
          xytext=(-175, -55),
          textcoords=platecarree,
          size=5,
          arrowprops=arrowprops,
      )
  
      # Add annotation with point and text via transform
      ax.annotate(
          "crs transform",
          (-75, -20),
          xytext=(0, -55),
          transform=platecarree,
          arrowprops=arrowprops,
      )
  
      # Add annotation with point via transform and text non transformed
      ax.annotate(
          "offset textcoords",
          (-149.8, 61.22),
          transform=platecarree,
          xytext=(-35, 10),
          textcoords="offset points",
          size=5,
          ha="right",
          arrowprops=arrowprops,
      )
  
      return fig
  
imports: import re
  import matplotlib.colors
  import matplotlib.pyplot
  import numpy
  import pytest
  import cartopy.crs
  from cartopy.mpl import _MPL_38
  from cartopy.tests.conftest import requires_scipy
label_desc: Use image node_id 40 for calling a global function with example usage: test_annotate() and returns: fig