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janfreybergjanfreyberg
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Added a demo-notebook for the new VolumeWidget
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‎check_updates.ipynb

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‎demo_update.ipynb

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{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {
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"scrolled": false
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},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"/Users/janfreyberg/anaconda3/envs/py36/lib/python3.6/site-packages/h5py/__init__.py:36: FutureWarning: Conversion of the second argument of issubdtype from `float` to `np.floating` is deprecated. In future, it will be treated as `np.float64 == np.dtype(float).type`.\n",
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" from ._conv import register_converters as _register_converters\n"
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]
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}
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],
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"source": [
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"from niwidgets.niwidget_volume import VolumeWidget, NiftiWidget\n",
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"from niwidgets.exampledata import examplet1\n",
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"from IPython import display\n"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"The new volume widget works slightly differently: It doesn't rely on `widgets.interact`, and therefore allows more control over the interactive elements, and what happens when they change. For example, we can make cool play buttons to move through the brain smoothly.\n",
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"\n",
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"You also don't need to call a plotter / rendering function anymore (although you can)."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {
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"scrolled": false
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},
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"outputs": [
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{
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"data": {
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"application/vnd.jupyter.widget-view+json": {
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"model_id": "7932ddd4bdcd4fd883497ad46026882a",
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"version_major": 2,
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"version_minor": 0
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},
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"text/plain": [
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"VBox(children=(Box(children=(PlaySlider(children=(Label(value='X: '), Play(value=45, interval=300, max=90), In…"
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]
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},
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"metadata": {},
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"output_type": "display_data"
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}
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],
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"source": [
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"widget = VolumeWidget(examplet1, colormap='viridis')\n",
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"\n",
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"widget # equivalent to widget.render()"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Amongst other things, you can now choose whether to follow radiological standards (left-right mirror images). Turned on by default, you can either untick the checkbox, or pass it as an argument to the widget:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"application/vnd.jupyter.widget-view+json": {
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"model_id": "b7df1220e0104e8f9bd32971155cfe17",
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"version_major": 2,
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"version_minor": 0
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},
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"text/plain": [
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"VBox(children=(Box(children=(PlaySlider(children=(Label(value='X: '), Play(value=45, interval=300, max=90), In…"
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]
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},
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"metadata": {},
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"output_type": "display_data"
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}
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],
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"source": [
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"widget = VolumeWidget(examplet1, orient_radiology=False)\n",
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"\n",
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"widget"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"In addition, composing the widget from scratch means that the control elements and plots can re-flow if the page isn't large enough. Try shrinking your browser window, or adjusting the figure size:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 5,
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"metadata": {
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"scrolled": false
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},
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"outputs": [
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{
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"data": {
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"application/vnd.jupyter.widget-view+json": {
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"model_id": "883c5edfafd747fcaa8427d5c0926ba0",
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"version_major": 2,
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"version_minor": 0
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},
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"text/plain": [
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"VBox(children=(Box(children=(PlaySlider(children=(Label(value='X: '), Play(value=45, interval=300, max=90), In…"
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]
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},
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"metadata": {},
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"output_type": "display_data"
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}
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],
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"source": [
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"widget = VolumeWidget(examplet1, figsize=(6, 6))\n",
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"\n",
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"widget"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Lastly, making the control elements part of the class means you can interact with it more like a normal python object, e.g. get and set the elements of the graph as python attributes:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 6,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"[45, 54, 45]\n",
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"viridis\n",
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"summer\n"
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]
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}
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],
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"source": [
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"print(widget.indices)\n",
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"print(widget.colormap)\n",
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"widget.colormap = 'summer'\n",
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"print(widget.colormap)"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.6.3"
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},
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"toc": {
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"nav_menu": {},
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"number_sections": true,
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"sideBar": true,
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"skip_h1_title": false,
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"toc_cell": false,
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"toc_position": {},
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"toc_section_display": "block",
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"toc_window_display": false
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}

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