{
"cells": [
{
"cell_type": "markdown",
"id": "046c36f5-dab2-4598-ba2f-4810d9fcf942",
"metadata": {},
"source": [
"# LaTeX Fractions\n",
"\n",
"Lets-Plot now renders LaTeX fractions written as `\\frac{...}{...}` in plot text elements,\n",
"such as titles, axis labels, legends, tooltips and `geom_text()` / `geom_label()`.\n",
"\n",
"**Note:** Nested fractions are not supported."
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "f90758df-8b64-4bb0-acfa-abda56e70408",
"metadata": {},
"outputs": [],
"source": [
"import numpy as np\n",
"\n",
"from lets_plot import *"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "928384f3-43bd-4d9e-af9e-b038b61646a5",
"metadata": {},
"outputs": [
{
"data": {
"text/html": [
"\n",
" \n",
" \n",
" "
]
},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"LetsPlot.setup_html()"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "e169f9e4-f892-429f-afef-1eae674f21e2",
"metadata": {},
"outputs": [],
"source": [
"# Define the functions\n",
"def f1(x):\n",
" return np.sin(3*x) / (x * (np.cos(x) + 2))\n",
"\n",
"def f2(x):\n",
" return np.cos(x) / x\n",
"\n",
"def f3(x):\n",
" return np.exp(-x)"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "5624bcbb-a24d-4f0b-92fc-cc674c586523",
"metadata": {},
"outputs": [
{
"data": {
"text/html": [
" \n",
" "
],
"text/plain": [
""
]
},
"execution_count": 4,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"c = ['#FFB6C1', '#AAFFAA', '#ADD8E6']\n",
"(ggplot()\n",
" + geom_vline(xintercept=0, size=0.4)\n",
" + geom_hline(yintercept=0, size=0.4)\n",
" + geom_function(fun=f1, xlim=[0.1, 12], color=c[0], size=2,\n",
" n=300, manual_key=layer_key(r'\\( \\frac{sin(3x)}{x (cos(x) + 2)} \\)', size=3))\n",
" + geom_function(fun=f2, xlim=[0.1, 12], color=c[1],\n",
" n=300, manual_key=layer_key(r'\\( \\frac{cos(x)}{x} \\)', size=3))\n",
" + geom_function(fun=f3, xlim=[0.1, 12], color=c[2],\n",
" n=300, manual_key=layer_key(r'\\( e^{-x} \\)', size=3))\n",
" + scale_x_continuous(expand=[0, 0.2])\n",
" + scale_y_continuous(limits=[-0.4, 1.0])\n",
" + labs(\n",
" x='x',\n",
" y='f(x)',\n",
" title='Mathematical Functions'\n",
" )\n",
" + theme_classic()\n",
"\n",
" + theme(\n",
" # Titles, labels\n",
" text=element_text(face='italic', family='Computer Modern'),\n",
" plot_title=element_text(size=20, hjust=0.05),\n",
" axis_title=element_text(size=18),\n",
" legend_text=element_text(size=18, vjust=0.5),\n",
" # Legend\n",
" legend_background=element_rect(size=1),\n",
" legend_position=[0.95, 0.9],\n",
" legend_justification=[1, 1],\n",
" # Axis, gridlines\n",
" axis_line='blank', axis_ticks='blank',\n",
" panel_grid_major=element_line(linetype='longdash'),\n",
" )\n",
" + theme(\n",
" # Layout improvements\n",
" panel_inset=4,\n",
" plot_inset=0,\n",
" axis_text=element_text(margin=0),\n",
" axis_title=element_text(margin=0),\n",
" plot_margin=16\n",
" )\n",
"\n",
" + flavor_solarized_dark()\n",
" + ggsize(900, 500)\n",
")"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.14.3"
}
},
"nbformat": 4,
"nbformat_minor": 5
}