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radiation: add some basic dipole / quadrupole radiation
This really could use some more work in cleaning it up, etc, but it does pretty much do what it's supposed to do.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,194 @@ | ||
| { | ||
| "cells": [ | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 1, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "import matplotlib as mpl\n", | ||
| "import matplotlib.pyplot as plt\n", | ||
| "from matplotlib.animation import FuncAnimation\n", | ||
| "import xarray as xr\n", | ||
| "import numpy as np\n", | ||
| "#import pscpy\n", | ||
| "\n", | ||
| "%matplotlib ipympl \n", | ||
| "#plt.rcParams['figure.figsize'] = [16, 10]" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 2, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "# dipole far field\n", | ||
| "dir = \"/Users/kai/src/psc/build-arm64\"\n", | ||
| "steps = range(0, 400, 5)\n", | ||
| "vmax = .0001\n", | ||
| "\n", | ||
| "# orig dipole near field\n", | ||
| "dir = \"/Users/kai/src/psc/build-arm64-2\"\n", | ||
| "steps = range(0, 800, 5)\n", | ||
| "vmax = .01\n", | ||
| "\n", | ||
| "# quadrupole\n", | ||
| "dir = \"/Users/kai/src/psc/build-arm64-2\"\n", | ||
| "steps = range(0, 1000, 20)\n", | ||
| "vmax = .00005\n", | ||
| "\n", | ||
| "def open_step(step):\n", | ||
| " return xr.open_dataset(f\"{dir}/pfd.{step:09d}.bp\", #engine='pscadios2',\n", | ||
| " species_names=['e', 'i'])\n", | ||
| "\n" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "datas = {}\n", | ||
| "for step in steps:\n", | ||
| " ds = open_step(step)\n", | ||
| " datas[step] = ds.ez_ec.sel(y=0.).T, float(ds.time)\n", | ||
| "#datas" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "def get_data(step):\n", | ||
| " return datas[step]\n", | ||
| "\n", | ||
| "steps = list(steps)\n", | ||
| "\n", | ||
| "fig, ax = plt.subplots()\n", | ||
| "step = steps[0]\n", | ||
| "fld, time = get_data(step)\n", | ||
| "cax = fld.plot(vmin=-vmax, vmax=vmax, cmap='coolwarm')\n", | ||
| "ax.set_title(f\"step {step} time {time:6.2f}\")\n", | ||
| "ax.set_aspect(1.)\n", | ||
| "\n", | ||
| "def animate(step):\n", | ||
| " fld, time = get_data(step)\n", | ||
| " cax.set_array(fld.values.flatten())\n", | ||
| " ax.set_title(f\"step {step} time {time:6.2f}\")\n", | ||
| "\n", | ||
| "ani = FuncAnimation(\n", | ||
| " fig, # figure\n", | ||
| " animate, # name of the function above\n", | ||
| " frames=steps[1:], # Could also be iterable or list\n", | ||
| " interval=200, # ms between frames\n", | ||
| " blit=False\n", | ||
| ")\n", | ||
| "\n", | ||
| "plt.show()\n", | ||
| "#ani" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": 5, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "def plot_fields(fldnames, fld_kwargs=None):\n", | ||
| " fig, axs = plt.subplots(1, len(fldnames))\n", | ||
| " if len(fldnames) == 1: axs = [axs]\n", | ||
| " for i, fldname in enumerate(fldnames):\n", | ||
| " fld = ds[fldname].sel(y=0)\n", | ||
| " if fld_kwargs:\n", | ||
| " kwargs = fld_kwargs[i]\n", | ||
| " else:\n", | ||
| " kwargs = {}\n", | ||
| " fld.plot(ax=axs[i], **kwargs)\n", | ||
| " axs[i].set_aspect('equal')\n", | ||
| " plt.tight_layout()" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "\n", | ||
| "plot_fields(['ex_ec', 'ey_ec', 'ez_ec'])\n", | ||
| "# fld_kwargs=[{\"vmin\": -.0065}, {\"vmin\": -.02}, {}])" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "def format_radians_label(float_in):\n", | ||
| " # Converts a float value in radians into a\n", | ||
| " # string representation of that float\n", | ||
| " string_out = str(float_in / (np.pi))+\"π\"\n", | ||
| " \n", | ||
| " return string_out\n", | ||
| "\n", | ||
| "def convert_polar_xticks_to_radians(ax):\n", | ||
| " # Converts x-tick labels from degrees to radians\n", | ||
| " \n", | ||
| " # Get the x-tick positions (returns in radians)\n", | ||
| " label_positions = ax.get_xticks()\n", | ||
| " \n", | ||
| " # Convert to a list since we want to change the type of the elements\n", | ||
| " labels = list(label_positions)\n", | ||
| " \n", | ||
| " # Format each label (edit this function however you'd like)\n", | ||
| " labels = [format_radians_label(label) for label in labels]\n", | ||
| " \n", | ||
| " ax.set_xticklabels(labels)\n", | ||
| " \n", | ||
| "theta = np.linspace(-np.pi, np.pi, 100)\n", | ||
| "\n", | ||
| "fig, ax = plt.subplots(subplot_kw={'projection': 'polar'})\n", | ||
| "ax.plot(theta, np.sin(theta)**2)\n", | ||
| "ax.set_rticks([0.25, 0.5, 0.75, 1])\n", | ||
| "ax.set_theta_zero_location(\"N\")\n", | ||
| "#convert_polar_xticks_to_radians(ax)\n", | ||
| "\n", | ||
| "ax.set_title(\"Radiated dipole power\")\n", | ||
| "plt.show()" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [] | ||
| } | ||
| ], | ||
| "metadata": { | ||
| "kernelspec": { | ||
| "display_name": ".venv", | ||
| "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": "3.12.5" | ||
| } | ||
| }, | ||
| "nbformat": 4, | ||
| "nbformat_minor": 4 | ||
| } |
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