Added is_global option to set global plot extent (#168)

geoviews/plotting/bokeh/__init__.py

@@ -195,6 +195,9 @@ def _init_glyph(self, plot, mapping, properties):
 
 class FeaturePlot(GeoPolygonPlot):
 
+    apply_ranges = param.Boolean(default=False, doc="""
+        Whether to compute the plot bounds from the data itself.""")
+
     scale = param.ObjectSelector(default='110m',
                                  objects=['10m', '50m', '110m'],
                                  doc="The scale of the Feature in meters.")

geoviews/plotting/bokeh/plot.py

@@ -28,6 +28,9 @@ class GeoPlot(ElementPlot):
                                         BoxZoomTool(match_aspect=True), 'reset'],
         doc="A list of plugin tools to use on the plot.")
 
+    is_global = param.Boolean(default=False, doc="""
+        Whether the plot should display the whole globe.""")
+
     show_grid = param.Boolean(default=False, doc="""
         Whether to show gridlines on the plot.""")
 
@@ -96,6 +99,8 @@ def get_extents(self, element, ranges):
         set_extent method to project the extents to the
         Elements coordinate reference system.
         """
+        if self.is_global:
+            return (-20026376.39, -20048966.10, 20026376.39, 20048966.10)
         extents = super(GeoPlot, self).get_extents(element, ranges)
         if not getattr(element, 'crs', None) or not self.geographic:
             return extents
@@ -121,6 +126,8 @@ class OverlayPlot(GeoPlot, HvOverlayPlot):
     for geographic plots.
     """
 
+    _propagate_options = HvOverlayPlot._propagate_options + ['is_global']
+
     def __init__(self, element, **params):
         super(OverlayPlot, self).__init__(element, **params)
         self.geographic = any(element.traverse(is_geographic, [_Element]))

geoviews/plotting/mpl/__init__.py

@@ -92,19 +92,33 @@ class LayoutPlot(ProjectionPlot, HvLayoutPlot):
 
 
 
-class OverlayPlot(ProjectionPlot, HvOverlayPlot):
+class GeoOverlayPlot(ProjectionPlot, HvOverlayPlot):
     """
     Extends HoloViews OverlayPlot with functionality to determine
     the correct projection for each axis.
     """
 
+    is_global = param.Boolean(default=False, doc="""
+        Whether the plot should display the whole globe.""")
+
+    _propagate_options = HvOverlayPlot._propagate_options + ['is_global']
+
     def __init__(self, element, **params):
-        super(OverlayPlot, self).__init__(element, **params)
+        super(GeoOverlayPlot, self).__init__(element, **params)
         plot_opts = self.lookup_options(self.hmap.last, 'plot').options
         self.geographic = any(self.hmap.traverse(is_geographic, [Element]))
         if 'aspect' not in plot_opts and self.geographic:
             self.aspect = 'equal'
 
+    def _finalize_axis(self, *args, **kwargs):
+        ret = super(GeoOverlayPlot, self)._finalize_axis(*args, **kwargs)
+        axis = self.handles['axis']
+        if self.show_grid:
+            axis.gridlines()
+        if self.is_global:
+            axis.set_global()
+        return ret
+
 
 
 class GeoPlot(ProjectionPlot, ElementPlot):
@@ -115,6 +129,9 @@ class GeoPlot(ProjectionPlot, ElementPlot):
     apply_ranges = param.Boolean(default=False, doc="""
         Do not use ranges to compute plot extents by default.""")
 
+    is_global = param.Boolean(default=False, doc="""
+        Whether the plot should display the whole globe.""")
+
     projection = param.Parameter(default=ccrs.PlateCarree())
 
     # Project operation to apply to the element
@@ -166,9 +183,11 @@ def get_extents(self, element, ranges):
 
     def _finalize_axis(self, *args, **kwargs):
         ret = super(GeoPlot, self)._finalize_axis(*args, **kwargs)
+        axis = self.handles['axis']
         if self.show_grid:
-            axis = self.handles['axis']
             axis.gridlines()
+        if self.is_global:
+            axis.set_global()
         return ret
 
 
@@ -544,7 +563,7 @@ def draw_annotation(self, axis, data, crs, opts):
                 Text: GeoTextPlot,
                 Layout: LayoutPlot,
                 NdLayout: LayoutPlot,
-                Overlay: OverlayPlot,
+                Overlay: GeoOverlayPlot,
                 Polygons: GeoPolygonPlot,
                 Path: GeoPathPlot,
                 Contours: GeoContourPlot,