DOC: LabelMap example updates

Author: thewtex

examples/LabelMap.ipynb

@@ -2,18 +2,9 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Requirement already satisfied: itk-io in /home/matt/bin/miniconda3/envs/itkwidgets/lib/python3.7/site-packages (5.1.0.post1)\r\n",
-      "Requirement already satisfied: itk-core==5.1.0.post1 in /home/matt/bin/miniconda3/envs/itkwidgets/lib/python3.7/site-packages (from itk-io) (5.1.0.post1)\r\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "# Install dependencies for this example\n",
     "# Note: This does not include itkwidgets, itself\n",
@@ -23,22 +14,23 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 37,
    "metadata": {},
    "outputs": [],
    "source": [
     "from urllib.request import urlretrieve\n",
     "import os\n",
     "\n",
     "import itk\n",
+    "import numpy as np\n",
     "\n",
     "from itkwidgets import view\n",
     "import itkwidgets"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 41,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -55,7 +47,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 42,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -65,15 +57,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 43,
    "metadata": {
     "scrolled": true
    },
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "37dcf1f9c89b4f9c8e7ab039d3f38dde",
+       "model_id": "a588b530f15c4d3ba2b1b13a04b8d6f5",
        "version_major": 2,
        "version_minor": 0
       },
@@ -98,20 +90,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [],
    "source": [
-    "names = [(0, 'Background'), (1, 'First cell'), (2, 'Second cell')]\n",
-    "viewer.label_map_names = names"
+    "label_count = len(np.unique(itk.array_view_from_image(label_map)))\n",
+    "label_weights = np.ones((label_count,), dtype=np.float32)\n",
+    "label_weights[1] = 0.1\n",
+    "label_weights[2] = 0.2\n",
+    "viewer.label_map_weights = label_weights"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {