{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# RWTH Colors\n",
    "\n",
    "When using `rwth_nb.plots.colors`, the RWTH [Corporate Design](http://www.rwth-aachen.de/cms/root/Die-RWTH/Einrichtungen/Verwaltung/Stabsstellen/Marketing/~eqbm/Corporate-Design/) color scheme is stored in a dictionary called `rwth_colors`. When loading `rwth_nb.plots.mpl_decorations`, the RWTH colors are propagated to Matplotlib as well. The following colors may be used:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import matplotlib.pyplot as plt\n",
    "from rwth_nb.plots import colors\n",
    "\n",
    "# adapted from https://matplotlib.org/2.0.0/examples/color/named_colors.html\n",
    "colors = colors.rwth_colors;\n",
    "fontsize = 12\n",
    "ncols = 5; nrows = len(colors.keys()) // ncols + 1;\n",
    "\n",
    "fig, ax = plt.subplots(figsize=(12, 6))\n",
    "X, Y = fig.get_dpi() * fig.get_size_inches() # Get height and width\n",
    "w = X / ncols; h = Y / nrows\n",
    "\n",
    "for i, name in enumerate(colors.keys()):\n",
    "    col = i % ncols\n",
    "    row = i // ncols\n",
    "    y = Y - (row * h) - h\n",
    "\n",
    "    xi_line = w * (col + 0.05); xf_line = w * (col + 0.25); xi_text = w * (col + 0.3)\n",
    "    ax.text(xi_text, y, name, fontsize=fontsize, horizontalalignment='left', verticalalignment='center')\n",
    "    ax.hlines(y + h * 0.1, xi_line, xf_line, color=colors[name], linewidth=(h * 0.6))\n",
    "\n",
    "ax.set_xlim(0, X); ax.set_ylim(0, Y); ax.set_axis_off();\n",
    "fig.subplots_adjust(left=0, right=1, top=1, bottom=0, hspace=0, wspace=0)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "When plotting, colors are cycled through for each graph by following order:  \n",
    "> *blue, orange, green, red, purple, bordeaux, violet, black-50, maigrun, turquoise*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import rwth_nb.plots.mpl_decorations as rwth_plt\n",
    "\n",
    "x = np.linspace(-2, 2, 501)\n",
    "\n",
    "fig, ax = plt.subplots()\n",
    "ax.set_ylim(-2, 2)\n",
    "rwth_plt.axis(ax); rwth_plt.grid(ax)\n",
    "\n",
    "for n in range(10):\n",
    "    ax.plot(x, x**n, label=r'$x^{}$'.format(n))\n",
    "    \n",
    "ax.legend();"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "For custom coloring, use as below."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import rwth_nb.plots.mpl_decorations as rwth_plt\n",
    "\n",
    "x = np.linspace(-4,4);\n",
    "\n",
    "fig,ax = plt.subplots();\n",
    "ax.plot(x, x**2, 'rwth:blue');\n",
    "ax.plot(x, x**2 + np.random.randn(len(x)), '.', color='rwth:green');"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This code is licensed under the [MIT license](https://opensource.org/licenses/MIT)."
   ]
  }
 ],
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