fix bqplot example

Author: ibdafna

notebooks/07.03-bqplot.ipynb

@@ -343,7 +343,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "from bqplot import *\n",
+    "from bqplot import (LinearScale, Scatter, Label, Axis, Figure, Lines)\n",
+    "import numpy as np\n",
     "\n",
     "size = 100\n",
     "np.random.seed(0)\n",
@@ -359,13 +360,13 @@
     "scat = Scatter(x=x_data[:10], y=y_data[:10], scales={'x': sc_x, 'y': sc_y}, default_colors=['blue'],\n",
     "               enable_move=True)\n",
     "lin = Lines(scales={'x': sc_x, 'y': sc_y}, stroke_width=4, line_style='dashed', colors=['orange'])\n",
-    "m = Label(value='Mean is %s'%np.mean(scat.y))\n",
+    "m = Label(x=[0.05], y=[0.9], text=[\"\"], colors=[\"black\"])\n",
     "\n",
     "def update_line(change):\n",
     "    with lin.hold_sync():\n",
     "        lin.x = [np.min(scat.x), np.max(scat.x)]\n",
     "        lin.y = [np.mean(scat.y), np.mean(scat.y)]\n",
-    "        m.value='Mean is %s'%np.mean(scat.y)\n",
+    "        m.text=['Mean is %s'%np.mean(scat.y)]\n",
     "        \n",
     "\n",
     "update_line(None)\n",
@@ -377,15 +378,15 @@
     "ax_x = Axis(scale=sc_x)\n",
     "ax_y = Axis(scale=sc_y, tick_format='0.2f', orientation='vertical')\n",
     "\n",
-    "fig = Figure(marks=[scat, lin], axes=[ax_x, ax_y])\n",
+    "fig = Figure(marks=[scat, lin, m], axes=[ax_x, ax_y])\n",
     "\n",
     "## In this case on drag, the line updates as you move the points.\n",
     "with scat.hold_sync():\n",
     "    scat.enable_move = True\n",
     "    scat.update_on_move = True\n",
     "    scat.enable_add = False\n",
     "\n",
-    "display(m, fig)"
+    "display(fig)"
    ]
   },
   {
@@ -434,9 +435,9 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "widgets-tutorial",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "widgets-tutorial"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {