sad_poppy.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "\n",
    "N = 500\n",
    "x = np.linspace(0, 10, N)\n",
    "y = np.linspace(0, 10, N)\n",
    "xx, yy = np.meshgrid(x, y)\n",
    "z = np.sin(xx) * np.cos(yy)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from bokeh import events\n",
    "from bokeh.io import show, output_notebook\n",
    "from bokeh.plotting import figure\n",
    "\n",
    "output_notebook()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "geom = {}\n",
    "global geom\n",
    "\n",
    "def print_event(attributes=[]):\n",
    "    def python_callback(event):\n",
    "        geom.update(event.__dict__['geometry'])\n",
    "#         print(event.__dict__['geometry'])\n",
    "    return python_callback\n",
    "\n",
    "\n",
    "def modify_doc(doc):\n",
    "    p = figure(x_range=(0, 10), y_range=(0, 10), plot_height=300,\n",
    "               tools='reset,box_select,lasso_select,poly_select')\n",
    "\n",
    "    p.image(image=[z], x=0, y=0, dw=10, dh=10, palette='Spectral11')\n",
    "\n",
    "    # register Python event callbacks\n",
    "    p.on_event(events.SelectionGeometry, print_event(attributes=['geometry']))\n",
    "\n",
    "    doc.add_root(p)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "notebook_url = lambda x: 'pangeo.esipfed.org/user/rsignell-usgs/proxy/{}'.format(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "scrolled": false
   },
   "outputs": [],
   "source": [
    "show(modify_doc, notebook_url=notebook_url(8787))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(geom)"
   ]
  }
 ],
 "metadata": {
  "gist": {
   "data": {
    "description": "bokeh_image_selector",
    "public": true
   },
   "id": ""
  },
  "kernelspec": {
   "display_name": "Python [conda root]",
   "language": "python",
   "name": "conda-root-py"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.6.5"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}

No!!

show(modify_doc, notebook_url=lambda x: 'pangeo.esipfed.org/user/rsignell-usgs/proxy/{}'.format(x))