{ "cells": [ { "cell_type": "code", "execution_count": 1, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "from __future__ import print_function\n", "\n", "from ipyleaflet import (\n", " Map,\n", " Marker,\n", " TileLayer, ImageOverlay,\n", " Polyline, Polygon, Rectangle, Circle, CircleMarker,\n", " GeoJSON,\n", " DrawControl\n", ")\n", "\n", "from traitlets import link" ] }, { "cell_type": "code", "execution_count": 2, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "center = [34.6252978589571, -77.34580993652344]\n", "zoom = 10" ] }, { "cell_type": "code", "execution_count": 3, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [ { "data": { "application/vnd.jupyter.widget-view+json": { "model_id": "d66a41b7a6a84c429321288ffeb292e5" } }, "metadata": {}, "output_type": "display_data" } ], "source": [ "m = Map(center=center, zoom=zoom)\n", "m" ] }, { "cell_type": "code", "execution_count": 4, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [ { "data": { "text/plain": [ "10" ] }, "execution_count": 4, "metadata": {}, "output_type": "execute_result" } ], "source": [ "m.zoom" ] }, { "cell_type": "markdown", "metadata": { "deletable": true, "editable": true }, "source": [ "Now create the `DrawControl` and add it to the `Map` using `add_control`. We also register a handler for draw events. This will fire when a drawn path is created, edited or deleted (there are the actions). The `geo_json` argument is the serialized geometry of the drawn path, along with its embedded style." ] }, { "cell_type": "code", "execution_count": 5, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "dc = DrawControl()\n", "\n", "def handle_draw(self, action, geo_json):\n", " print(action)\n", " print(geo_json)\n", "\n", "dc.on_draw(handle_draw)\n", "m.add_control(dc)" ] }, { "cell_type": "markdown", "metadata": { "deletable": true, "editable": true }, "source": [ "In addition, the `DrawControl` also has `last_action` and `last_draw` attributes that are created dynamicaly anytime a new drawn path arrives." ] }, { "cell_type": "code", "execution_count": 6, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [ { "data": { "text/plain": [ "u''" ] }, "execution_count": 6, "metadata": {}, "output_type": "execute_result" } ], "source": [ "dc.last_action" ] }, { "cell_type": "code", "execution_count": 7, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [ { "data": { "text/plain": [ "{'geometry': None, 'type': 'Feature'}" ] }, "execution_count": 7, "metadata": {}, "output_type": "execute_result" } ], "source": [ "dc.last_draw" ] }, { "cell_type": "markdown", "metadata": { "deletable": true, "editable": true }, "source": [ "Let's draw a second map and try to import this GeoJSON data into it." ] }, { "cell_type": "code", "execution_count": 8, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [ { "data": { "application/vnd.jupyter.widget-view+json": { "model_id": "d98f56f215c84a39b08ac51285356dca" } }, "metadata": {}, "output_type": "display_data" } ], "source": [ "m2 = Map(center=center, zoom=zoom, layout=dict(width='600px', height='400px'))\n", "m2" ] }, { "cell_type": "markdown", "metadata": { "deletable": true, "editable": true }, "source": [ "We can use `link` to synchronize traitlets of the two maps:" ] }, { "cell_type": "code", "execution_count": 9, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "map_center_link = link((m, 'center'), (m2, 'center'))\n", "map_zoom_link = link((m, 'zoom'), (m2, 'zoom'))" ] }, { "cell_type": "code", "execution_count": 10, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "new_poly = GeoJSON(data=dc.last_draw)" ] }, { "cell_type": "code", "execution_count": 11, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "m2.add_layer(new_poly)" ] }, { "cell_type": "markdown", "metadata": { "deletable": true, "editable": true }, "source": [ "Note that the style is preserved! If you wanted to change the style, you could edit the `properties.style` dictionary of the GeoJSON data. Or, you could even style the original path in the `DrawControl` by setting the `polygon` dictionary of that object. See the code for details." ] }, { "cell_type": "markdown", "metadata": { "deletable": true, "editable": true }, "source": [ "Now let's add a `DrawControl` to this second map. For fun we will disable lines and enable circles as well and change the style a bit." ] }, { "cell_type": "code", "execution_count": 12, "metadata": { "collapsed": false, "deletable": true, "editable": true }, "outputs": [], "source": [ "dc2 = DrawControl(polygon={'shapeOptions': {'color': '#0000FF'}}, polyline={},\n", " circle={'shapeOptions': {'color': '#0000FF'}})\n", "m2.add_control(dc2)" ] } ], "metadata": { "kernelspec": { "display_name": "Python 2", "language": "python", "name": "python2" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 2 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython2", "version": "2.7.13" }, "widgets": { "application/vnd.jupyter.widget-state+json": { "state": { "478e6cef3593410a9fa665319769accd": { "model_module": "jupyter-leaflet", "model_module_version": "*", "model_name": "LeafletDrawControlModel", "state": { "_model_module_version": "*", 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