Notebook showing basics of widget slider usage. Includes example of passing object through fixed widget method.

notebook_basicWidgetDemo.ipynb

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   "source": [
    "# Demo most basic widget usage"
   ]
  },
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   "source": [
    "# Import widget tools\n",
    "from ipywidgets import interact, interactive, fixed, interact_manual\n",
    "import ipywidgets as widgets\n",
    "\n",
    "import numpy as np\n",
    "import matplotlib.pyplot as plt \n",
    "\n",
    "%matplotlib inline"
   ]
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    "# easiest widgets use the interact decorator directly on a function\n",
    "@interact(k=widgets.FloatSlider(value=4.0e0,\n",
    "                                  min=0.,\n",
    "                                  max=15.,\n",
    "                                  step=0.1,\n",
    "                                  description=\"k\",\n",
    "                                  continuous_update=False))\n",
    "def sinPlotx(k):\n",
    "    x = np.linspace(0., 10., 1000)\n",
    "    y = np.sin(k * x)\n",
    "    plt.plot(x, y)"
   ]
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   "execution_count": null,
   "metadata": {},
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   "source": [
    "# basic example parsing an external class/variable/object as fixed object\n",
    "class testClass():\n",
    "    def __init__(self, testVar):\n",
    "        self.internalVar = testVar\n",
    "\n",
    "\n",
    "def sinPlotter(k, testClass):\n",
    "    x = np.linspace(0., 10., 1000)\n",
    "    y = np.sin(k * x)\n",
    "    plt.plot(x, y)\n",
    "  \n",
    "# make the widget objects\n",
    "kSlider=widgets.FloatSlider(value=4.0e0,\n",
    "                                  min=0.,\n",
    "                                  max=15.,\n",
    "                                  step=0.1,\n",
    "                                  description=\"k\",\n",
    "                                  continuous_update=False)\n",
    "\n",
    "fixedClass = widgets.fixed(testClass) # fixed widget for passing into function without slider\n",
    "    \n",
    "# Put together the UI\n",
    "ui = widgets.HBox([kSlider]) # make UI \n",
    "out = widgets.interactive_output(sinPlotter, {'k': kSlider, 'testClass': fixedClass})\n",
    "display(ui, out)"
   ]
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