"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"import holoviews as hv\n",
"from holoviews import opts\n",
"\n",
"hv.extension('matplotlib')"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"The ``Spline`` annotation is used to draw cubic Bezier curves. In the overlay below, the spline is in green and the control points are shown by the light grey line:"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"points = [(-0.3, -0.3), (0,0), (0.25, -0.25), (0.3, 0.3)]\n",
"spline = hv.Spline((points, [1,4,4,4]))\n",
"\n",
"(spline * hv.Curve(points)).opts(\n",
" opts.Curve(color='#D3D3D3'),\n",
" opts.Spline(linewidth=6, edgecolor='green'))"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"The first argument to ``Splines`` are the control point positions and the integers in the second list are the control codes, as documented in the [matplotlib splines documentation](http://matplotlib.org/api/path_api.html).\n",
"\n",
"For full documentation and the available style and plot options, use ``hv.help(hv.Spline).``"
]
}
],
"metadata": {
"language_info": {
"name": "python",
"pygments_lexer": "ipython3"
}
},
"nbformat": 4,
"nbformat_minor": 2
}