Update the gallery example for plotting lines with LineString/MultiLi…

…neString geometry (#3711)

Co-authored-by: Dongdong Tian <[email protected]>
Co-authored-by: actions-bot <[email protected]>
Co-authored-by: Yvonne Fröhlich <[email protected]>

examples/gallery/lines/linestrings.py

@@ -0,0 +1,46 @@
+"""
+GeoPandas: Plotting lines with LineString or MultiLineString geometry
+=====================================================================
+
+The :meth:`pygmt.Figure.plot` method allows us to plot geographical data such as lines
+with LineString or MultiLineString geometry types stored in a
+:class:`geopandas.GeoDataFrame` object or any object that implements the
+`__geo_interface__ <https://gist.github.com/sgillies/2217756>`__ property.
+
+Use :func:`geopandas.read_file` to load data from any supported OGR format such as a
+shapefile (.shp), GeoJSON (.geojson), geopackage (.gpkg), etc. Then, pass the
+:class:`geopandas.GeoDataFrame` object as an argument to the ``data`` parameter of
+:meth:`pygmt.Figure.plot`, and style the lines using the ``pen`` parameter.
+"""
+
+# %%
+import geodatasets
+import geopandas as gpd
+import pygmt
+
+# Read a sample dataset provided by the geodatasets package.
+# The dataset contains large rivers in Europe, stored as LineString/MultiLineString
+# geometry types.
+gdf = gpd.read_file(geodatasets.get_path("eea large_rivers"))
+
+# Convert object to EPSG 4326 coordinate system
+gdf = gdf.to_crs("EPSG:4326")
+print(gdf.head())
+
+# %%
+fig = pygmt.Figure()
+
+fig.coast(
+    projection="M10c",
+    region=[-10, 30, 35, 57],
+    resolution="l",
+    land="gray95",
+    shorelines="1/0.1p,gray50",
+    borders="1/0.1,gray30",
+    frame=True,
+)
+
+# Add rivers to map
+fig.plot(data=gdf, pen="1p,steelblue")
+
+fig.show()