Geoviews

=============

Major feature:

- The bokeh backend now supports arbitrary geographic projections, no longer just Web Mercator ([170](https://github.com/holoviz/geoviews/pull/170))

New components:

- Added [``Graph`` element](http://holoviews.org/reference/elements/bokeh/Graph.html) to plot networks of connected nodes ([#115](https://github.com/holoviz/geoviews/pull/115))

- Added [``TriMesh`` element](http://holoviews.org/reference/elements/bokeh/TriMesh.html) and datashading operation to plot small and large irregular triangular meshes ([#115](https://github.com/holoviz/geoviews/pull/115))

- Added [``QuadMesh`` element](http://holoviews.org/reference/elements/bokeh/QuadMesh.html) and datashading operation to plot small and large, irregular rectilinear and curvilinear meshes ([#116](https://github.com/holoviz/geoviews/pull/116))

- Added [``VectorField`` element](http://holoviews.org/reference/elements/bokeh/VectorField.html) and datashading operation to plot small and large quiver plots and other collections of vectors ([#122](https://github.com/holoviz/geoviews/pull/122))

- Added [``HexTiles`` element](http://holoviews.org/reference/elements/bokeh/HexTiles.html) to plot data binned into a hexagonal grid ([#147](https://github.com/holoviz/geoviews/pull/147))

- Added [``Labels`` element](http://holoviews.org/reference/elements/bokeh/Labels.html) to plot a large number of text labels at once (as data rather than as annotations) ([#147](https://github.com/holoviz/geoviews/pull/147))

New features:

- Hover tool now supports displaying geographic coordinates as longitude and latitude ([158](https://github.com/holoviz/geoviews/pull/158))

- Added a new ``geoviews.tile_sources`` module with a predefined set of tile sources ([165](https://github.com/holoviz/geoviews/pull/165))

- Wrapped the xESMF library as a regridding and interpolation operation for rectilinear and curvilinear grids ([127](https://github.com/holoviz/geoviews/pull/127))

- HoloViews operations including ``datashade`` and ``rasterize`` now retain geographic ``crs`` coordinate system ([118](https://github.com/holoviz/geoviews/pull/118))

Enhancements:

- Overhauled documentation and added a gallery ([121](https://github.com/holoviz/geoviews/pull/121))

=============

Enhancements:

- Ensured that HoloViews operations such as datashade, aggregate and regrid do not drop the coordinate reference system on the input element (https://github.com/holoviz/geoviews/pull/118)
- Unified WMTS support across backends, bokeh and matplotlib now support rendering ``{X}_{Y}_{Z}`` based web tiles (https://github.com/holoviz/geoviews/pull/120)
- Handle projecting of empty Elements (https://github.com/holoviz/geoviews/pull/131)
- Set Image element NaN coloring to transparent (https://github.com/holoviz/geoviews/pull/136/commits/f1f29607079f1f86bce56187dd7a98ca2a1d9eff)
- Overhauled website with new theme (https://github.com/holoviz/geoviews/pull/106)

=============

=============

=============

- Allow specifying WMTS element with just the URL ([89](https://github.com/holoviz/geoviews/pull/89))
- Added GeoPandas interface to plot geometries more easily ([88](https://github.com/holoviz/geoviews/pull/88))
- Added further projection operations allowing most geographic element types to be explicitly projected ([88](https://github.com/holoviz/geoviews/pull/88))
- Enabled MercatorTicker on geographic bokeh plots ensuring axes are labelled with latitudes and longitudes ([64](https://github.com/holoviz/geoviews/pull/64))

=============

This is a minor release reapplying a fix which was accidentally reverted in 1.3.1:

- The WMTS Element now accepts a tile source URL directly for the bokeh backend (PR 83)