{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# HeatMapWithTime Plugin"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"In this example we show the most basic usage of the HeatMapWithTime plugin.\n",
"\n",
"We generate a random set of points with lat/lon coordinates to draw on the map, and then move these points slowly in a random direction to simulate a time dimension. The points are aranged into a list of sets of data to draw."
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import folium\n",
"import folium.plugins as plugins\n",
"import numpy as np\n",
"\n",
"np.random.seed(3141592)\n",
"initial_data = (\n",
" np.random.normal(size=(100, 2)) * np.array([[1, 1]]) +\n",
" np.array([[48, 5]])\n",
")\n",
"\n",
"move_data = np.random.normal(size=(100, 2)) * 0.01\n",
"\n",
"data = [(initial_data + move_data * i).tolist() for i in range(100)]"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [
{
"data": {
"text/html": [
""
],
"text/plain": [
""
]
},
"execution_count": 2,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"m = folium.Map([48., 5.], tiles='stamentoner', zoom_start=6)\n",
"\n",
"hm = plugins.HeatMapWithTime(data)\n",
"\n",
"hm.add_to(m)\n",
"\n",
"m"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Now we show that the time index can be specified, allowing a more meaningful representation of what the time steps mean. We also enable the 'auto_play' option and change the maximum opacity. See the docmentation for a full list of options that can be used."
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"from datetime import datetime, timedelta\n",
"\n",
"\n",
"time_index = [\n",
" (datetime.now() + k * timedelta(1)).strftime('%Y-%m-%d') for\n",
" k in range(len(data))\n",
"]"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [
{
"data": {
"text/html": [
""
],
"text/plain": [
""
]
},
"execution_count": 4,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"m = folium.Map([48., 5.], tiles='stamentoner', zoom_start=6)\n",
"\n",
"hm = plugins.HeatMapWithTime(\n",
" data,\n",
" index=time_index,\n",
" auto_play=True,\n",
" max_opacity=0.3\n",
")\n",
"\n",
"hm.add_to(m)\n",
"\n",
"m"
]
}
],
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