What’s new in cartopy 0.10

Release:0.10.0 Date:

We are very pleased to announce that Andrew Dawson was added to the cartopy core development team. In this release Andrew has single-handedly implemented comprehensive vector transformation and visualisation capabilities, including:

• The ability to transform vector fields between different coordinate reference systems via the transform_vectors() CRS method.
• GeoAxes.quiver and GeoAxes.barbs for arrow and barb plotting. More information is available at Vector plotting.
• A regridding function for “regularising” a vector field in the target coordinate system. See also cartopy.vector_transform.vector_scalar_to_grid(). Both quiver() and barbs() accept the regrid_shape keyword to trigger this behaviour automatically.
• GeoAxes.streamplot adds the ability to draw streamlines in any projection from a vector field in any other projection.

(Source code)

What’s new in cartopy 0.9

Release:0.9.0 Date:12 September 2013

• We are very pleased to announce that Bill Little was added to the cartopy core development team. Bill has made some excellent contributions to cartopy, and his presentation at EuroScipy‘13 on “Iris & Cartopy” was voted best talk of the conference.

• Other talks and tutorials during this release cycle include Phil Elson’s talk at SciPy‘13 (with video), Thomas Lecocq’s tutorial at EuroSciPy and a forthcoming talk at FOSS4G.

• Christoph Gohlke updated cartopy to support Windows 7.

• The Plate Carree projection was updated to fully handle arbitrary globe definitions.

• Peter Killick updated the Mercator class’ default globe to WGS84. His refactor paved the way for some follow on work to fully implement the Google Spherical Mercator (EPSG:3857) projection.

  

• The TransverseMercator class saw a tidy up to include several common arguments (ticket)

• Bill Little added the Geostationary projection to allow geolocation of satellite imagery.

  

• Byron Blay added the Lambert conformal conic projection.

What’s new in cartopy 0.8

Release:0.8.0 Date:3 June 2013

• Bill Little added support for the OSNI projection and enhanced the image nest capability. (PR #263)
• cartopy.io.img_nest.Img has been extended to include a cartopy.io.img_nest.Img.from_world_file() static method for easier loading of georeferenced images.
• Phil Elson added a major performance improvement when plotting data from PlateCarree onto a PlateCarree map. (PR #260)
• Byron Blay and Richard Hattersley added a cartopy.crs.Globe class to encapsulate ellipsoid and optionally datum information for CRSs. Globe handling in many projections, including Stereographic, has been added.

What’s new in cartopy 0.7

Release:0.7.0 Date:21 Mar 2013

• Carwyn Pelley added support for 2D arrays of points to cartopy.crs.CRS.transform_points(). (PR #192)
• Phil Elson added control for the gridlines and tick labels drawn with cartopy.mpl.geoaxes.GeoAxes.gridlines(). (PR #238)
• Various documentation enhancements have been added. (PR #247, PR #244 PR #240 and PR #242)

This is a quick release which targets two very specific requirements. The goals outlined in the development plan at v0.6 still remain the primary target for v0.8 and beyond.

What’s new in cartopy 0.6

Release:0.6.0 Date:19 Feb 2013

• Patrick Peglar added the ability to draw ticks for some limited projections when using the gridlines() method on an Axes.
• Phil Elson and Carwyn Pelley extended the cartopy documentation to include new tutorials such as Using the cartopy shapereader.
• Ian Edwards added a new example to create a favicon for cartopy.
• Phil Elson added a new example to show polygon analysis and visualisation with Shapely and cartopy.
• Edward Campbell added a new cartopy.crs.EuroPP projection for UTM zone 32.
• Andrew Dawson added a central_longitude keyword for the Stereographic family of projections.
• Phil Elson added a Downloader class which allows automatic downloading of shapefiles (currently from Natural Earth and GSHHS). The extension requires no user action and can be configured via the cartopy.config dictionary.

Development plans for cartopy 0.7 and beyond

• Improve the projection definitions to support better control over datum definitions and consider adding WKT support (ticket).
• Begin work on vector field support (barbs, quiver, streamlines etc.).
• Continue identifying and implementing performance enhancements (particularly in contour drawing).
• Extend the number of projections for which it is possible to draw tick marks.

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What’s new in cartopy 0.5

Release:0.5.0 Date:7 Dec 2012

This document explains the new/changed features of cartopy in version 0.5.

Release 0.5 of cartopy continues the work to expand the feature-set of cartopy to encompass common operations, and provide performance improvements.

Cartopy 0.5 features

A summary of the main features added with version 0.5:

• An improved feature API to support future expansion and sophistication, and a wider range of pre-defined Natural Earth datasets.

Incompatible changes

None

Deprecations

• The method Axes.natural_earth_shp() has been replaced by the method Axes.add_feature() and the cartopy.feature module.

Feature API

A new features api is now available, see Using the cartopy shapereader.

import cartopy
import matplotlib.pyplot as plt


def main():

    ax = plt.axes(projection=cartopy.crs.PlateCarree())

    ax.add_feature(cartopy.feature.LAND)
    ax.add_feature(cartopy.feature.OCEAN)
    ax.add_feature(cartopy.feature.COASTLINE)
    ax.add_feature(cartopy.feature.BORDERS, linestyle=':')
    ax.add_feature(cartopy.feature.LAKES, alpha=0.5)
    ax.add_feature(cartopy.feature.RIVERS)

    ax.set_extent([-20, 60, -40, 40])

    plt.show()


if __name__ == '__main__':
    main()

(Source code)