123 lines
2.9 KiB
Plaintext
123 lines
2.9 KiB
Plaintext
{
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"cells": [
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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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"from matplotlib import pyplot\n",
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"%matplotlib inline\n",
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"\n",
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"from shapely.geometry import Polygon, Point\n",
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"from descartes.patch import PolygonPatch"
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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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"\n",
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"GRAY='#999999'\n",
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"BLUE='#222299'\n",
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"\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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"\n",
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"fig = pyplot.figure(1, figsize=(12,20), dpi=90)\n",
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"\n",
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"a = Point(1, 1).buffer(1.5)\n",
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"b = Point(2, 1).buffer(1.5)\n",
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"\n",
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"# 1\n",
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"ax = fig.add_subplot(121)\n",
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"\n",
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"patch1 = PolygonPatch(a, fc=GRAY, ec=GRAY, alpha=0.2, zorder=1)\n",
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"ax.add_patch(patch1)\n",
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"patch2 = PolygonPatch(b, fc=GRAY, ec=GRAY, alpha=0.2, zorder=1)\n",
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"ax.add_patch(patch2)\n",
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"c = a.intersection(b)\n",
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"patchc = PolygonPatch(c, fc=BLUE, ec=BLUE, alpha=0.5, zorder=2)\n",
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"ax.add_patch(patchc)\n",
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"\n",
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"ax.set_title('a.intersection(b)')\n",
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"\n",
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"xrange = [-1, 4]\n",
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"yrange = [-1, 3]\n",
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"ax.set_xlim(*xrange)\n",
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"ax.set_xticks([-1, 0, 1, 2, 3])\n",
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"ax.set_ylim(*yrange)\n",
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"ax.set_yticks([-1, 0, 1, 2, 3])\n",
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"ax.set_aspect(1)\n",
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"\n",
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"#2\n",
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"ax = fig.add_subplot(122)\n",
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"\n",
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"patch1 = PolygonPatch(a, fc=GRAY, ec=GRAY, alpha=0.2, zorder=1)\n",
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"ax.add_patch(patch1)\n",
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"patch2 = PolygonPatch(b, fc=GRAY, ec=GRAY, alpha=0.2, zorder=1)\n",
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"ax.add_patch(patch2)\n",
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"c = a.symmetric_difference(b)\n",
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"\n",
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"if c.geom_type == 'Polygon':\n",
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" patchc = PolygonPatch(c, fc=BLUE, ec=BLUE, alpha=0.5, zorder=2)\n",
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" ax.add_patch(patchc)\n",
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"elif c.geom_type == 'MultiPolygon':\n",
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" for p in c:\n",
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" patchp = PolygonPatch(p, fc=BLUE, ec=BLUE, alpha=0.5, zorder=2)\n",
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" ax.add_patch(patchp)\n",
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"\n",
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"ax.set_title('a.symmetric_difference(b)')\n",
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"\n",
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"xrange = [-1, 4]\n",
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"yrange = [-1, 3]\n",
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"ax.set_xlim(*xrange)\n",
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"ax.set_xticks([-1, 0, 1, 2, 3])\n",
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"ax.set_ylim(*yrange)\n",
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"ax.set_yticks([-1, 0, 1, 2, 3])\n",
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"ax.set_aspect(1)\n",
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"\n",
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"pyplot.show()\n",
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"\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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}
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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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},
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"nbformat": 4,
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"nbformat_minor": 2
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}
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