ipyleaflet_jupyterlab_test.ipynb

{
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  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [],
   "source": [
    "from collections import OrderedDict\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 IPython.display import display\n",
    "\n",
    "def handle_draw(self, action, geo_json):\n",
    "    print(action)\n",
    "    print(geo_json)\n",
    "    \n",
    "class Grass2Leaflet(object):\n",
    "    def __init__(self, grassimg):\n",
    "        self.grassimg = grassimg\n",
    "        self.draw_control = None\n",
    "        self.zoom = 15\n",
    "        self.center = self.centermap()\n",
    "        self.m = Map(default_tiles=TileLayer(opacity=1.0), center=self.center, zoom=self.zoom)\n",
    "\n",
    "    def centermap(self):\n",
    "        centerlat = []\n",
    "        centerlon = []\n",
    "        for i in self.grassimg:\n",
    "            centerlat.append(self.grassimg[i]['C'][0])\n",
    "            centerlon.append(self.grassimg[i]['C'][1])\n",
    "        center = (sum(centerlat) / float(len(centerlat)), sum(centerlon) / float(len(centerlon)))\n",
    "        return center\n",
    "    \n",
    "    def imgoverlays(self):\n",
    "        self.leafletimg = OrderedDict()\n",
    "        for i in self.grassimg:\n",
    "            layer = ImageOverlay(url=self.grassimg[i]['raster'],\n",
    "                                 bounds=(self.grassimg[i]['LL'], self.grassimg[i]['UR']))\n",
    "            self.leafletimg[i] = layer\n",
    "    \n",
    "    def render(self, draw_control=None):\n",
    "        self.imgoverlays()\n",
    "        self.dc = None\n",
    "        options = ['None']\n",
    "        self.m.add_layer(self.leafletimg[list(self.grassimg.keys())[-1]])\n",
    "        if len(self.grassimg) >= 2:\n",
    "            self.maplist = widgets.Dropdown(\n",
    "                options=options + list(self.grassimg.keys()),\n",
    "                value=list(self.grassimg.keys())[-1],\n",
    "                description='Select Layer:',\n",
    "            )\n",
    "            self.maplist.observe(self.on_value_change, names='value')\n",
    "            display(self.maplist)\n",
    "        if draw_control:\n",
    "            self.dc = DrawControl()\n",
    "            self.dc.on_draw(handle_draw)\n",
    "            self.m.add_control(self.dc)\n",
    "        display(self.m)\n",
    "        return {'map': self.m, 'drawer': self.dc}\n",
    "    \n",
    "    def on_value_change(self, layername):\n",
    "        self.m.clear_layers()\n",
    "        self.m.add_layer(TileLayer(opacity=1.0))\n",
    "        if self.maplist.value != 'None':\n",
    "            self.m.add_layer(self.leafletimg[layername['new']])\n",
    "            \n",
    "    def main(self):\n",
    "        self.imgoverlays()\n",
    "        self.render()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [],
   "source": [
    "grass_img = OrderedDict([('prj1_bag.2',\n",
    "              {'C': (41.06619379389716, -68.91168489766864),\n",
    "               'LL': (41.06318098836321, -68.9322551709071),\n",
    "               'UR': (41.06920292379777, -68.8911127540066),\n",
    "               'proj': '+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs ',\n",
    "               'raster': 'test.jpg'})])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "86b7707f8aaa405e83129f08b0f1476b",
       "version_major": 2,
       "version_minor": 0
      },
      "text/html": [
       "<p>Failed to display Jupyter Widget of type <code>Map</code>.</p>\n",
       "<p>\n",
       "  If you're reading this message in Jupyter Notebook or JupyterLab, it may mean\n",
       "  that the widgets JavaScript is still loading. If this message persists, it\n",
       "  likely means that the widgets JavaScript library is either not installed or\n",
       "  not enabled. See the <a href=\"https://ipywidgets.readthedocs.io/en/stable/user_install.html\">Jupyter\n",
       "  Widgets Documentation</a> for setup instructions.\n",
       "</p>\n",
       "<p>\n",
       "  If you're reading this message in another notebook frontend (for example, a static\n",
       "  rendering on GitHub or <a href=\"https://nbviewer.jupyter.org/\">NBViewer</a>),\n",
       "  it may mean that your frontend doesn't currently support widgets.\n",
       "</p>\n"
      ],
      "text/plain": [
       "Map(center=[41.06619379389716, -68.91168489766864], controls=(DrawControl(layer=FeatureGroup(), polygon={'shapeOptions': {}}, polyline={'shapeOptions': {}}),), layers=(TileLayer(options=['max_zoom', 'tile_size', 'min_zoom', 'detect_retina', 'opacity', 'attribution']), ImageOverlay(bounds=[(41.06318098836321, -68.9322551709071), (41.06920292379777, -68.8911127540066)], options=['attribution', 'opacity'], url='test.jpg')), layout=Layout(align_self='stretch', height='400px'), options=['touch_zoom', 'center', 'min_zoom', 'inertia', 'tap_tolerance', 'dragging', 'zoom_start', 'bounce_at_zoom_limits', 'box_zoom', 'zoom_control', 'world_copy_jump', 'scroll_wheel_zoom', 'attribution_control', 'zoom_animation_threshold', 'close_popup_on_click', 'double_click_zoom', 'keyboard_zoom_offset', 'zoom', 'keyboard', 'inertia_max_speed', 'max_zoom', 'tap', 'inertia_deceleration', 'keyboard_pan_offset'], zoom=15)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "leaflet_widget = Grass2Leaflet(grass_img).render(draw_control=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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