111 lines
2.9 KiB
Plaintext
111 lines
2.9 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Feature Creation\n",
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"----------------\n",
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"\n",
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"This example manually instantiates a\n",
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":class:`cartopy.feature.NaturalEarthFeature` to access administrative\n",
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"boundaries (states and provinces).\n",
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"\n",
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"Note that this example is intended to illustrate the ability to construct\n",
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"Natural Earth features that cartopy does not necessarily know about\n",
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"*a priori*.\n",
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"In this instance however, it would be possible to make use of the\n",
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"pre-defined :data:`cartopy.feature.STATES` constant."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"\n",
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"import matplotlib.pyplot as plt\n",
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"import cartopy.crs as ccrs\n",
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"import cartopy.feature as cfeature\n",
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"from matplotlib.offsetbox import AnchoredText\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"def main():\n",
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" fig = plt.figure()\n",
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" ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree())\n",
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" ax.set_extent([80, 170, -45, 30], crs=ccrs.PlateCarree())\n",
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"\n",
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" # Put a background image on for nice sea rendering.\n",
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" ax.stock_img()\n",
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"\n",
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" # Create a feature for States/Admin 1 regions at 1:50m from Natural Earth\n",
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" states_provinces = cfeature.NaturalEarthFeature(\n",
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" category='cultural',\n",
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" name='admin_1_states_provinces_lines',\n",
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" scale='50m',\n",
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" facecolor='none')\n",
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"\n",
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" SOURCE = 'Natural Earth'\n",
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" LICENSE = 'public domain'\n",
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"\n",
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" ax.add_feature(cfeature.LAND)\n",
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" ax.add_feature(cfeature.COASTLINE)\n",
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" ax.add_feature(states_provinces, edgecolor='gray')\n",
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"\n",
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" # Add a text annotation for the license information to the\n",
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" # the bottom right corner.\n",
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" text = AnchoredText(r'(c) {}; license: {}'\n",
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" ''.format(SOURCE, LICENSE),\n",
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" loc=4, prop={'size': 10}, frameon=True)\n",
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" ax.add_artist(text)\n",
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"\n",
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" plt.show()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"main()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.5"
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}
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"nbformat": 4,
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