From ea0c4719fe4d9d70f9f8973a98fc2419e9366298 Mon Sep 17 00:00:00 2001
From: seogi <sgkang09@gmail.com>
Date: Thu, 27 Feb 2014 09:15:32 -0800
Subject: [PATCH] added play notebook!

---
 simpegPF/notebooks/Play_analytic_fun.ipynb | 97 +++++++++++++++++++++-
 1 file changed, 93 insertions(+), 4 deletions(-)

diff --git a/simpegPF/notebooks/Play_analytic_fun.ipynb b/simpegPF/notebooks/Play_analytic_fun.ipynb
index 580213cd..90321e3a 100644
--- a/simpegPF/notebooks/Play_analytic_fun.ipynb
+++ b/simpegPF/notebooks/Play_analytic_fun.ipynb
@@ -183,7 +183,18 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "bx.size"
+      "import simpegPF as PF"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 13
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "PF.Magnetics.MagneticsDiffSecondary"
      ],
      "language": "python",
      "metadata": {},
@@ -191,13 +202,91 @@
       {
        "metadata": {},
        "output_type": "pyout",
-       "prompt_number": 7,
+       "prompt_number": 14,
        "text": [
-        "524880"
+        "simpegPF.Magnetics.MagneticsDiffSecondary"
        ]
       }
      ],
-     "prompt_number": 7
+     "prompt_number": 14
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import simpegPF.Magnetics.MagneticsDiffSecondary"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "ename": "ImportError",
+       "evalue": "No module named MagneticsDiffSecondary",
+       "output_type": "pyerr",
+       "traceback": [
+        "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mImportError\u001b[0m                               Traceback (most recent call last)",
+        "\u001b[1;32m<ipython-input-15-0a1160dccb7a>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[1;32mimport\u001b[0m \u001b[0msimpegPF\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mMagnetics\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mMagneticsDiffSecondary\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
+        "\u001b[1;31mImportError\u001b[0m: No module named MagneticsDiffSecondary"
+       ]
+      }
+     ],
+     "prompt_number": 15
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "## Quick test for converting from (inc., dec., intensity) to (bx, by, bz)"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import numpy as np"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "Btot = 59013.8\n",
+      "Inc = 82.71\n",
+      "Dec = 14.4\n",
+      "Bxa = 1862.7\n",
+      "Bya = 7256.3\n",
+      "Bza = 58536.4"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "Bx = Btot*np.cos(Inc/180.*np.pi)*np.sin(Dec/180.*np.pi)\n",
+      "By = Btot*np.cos(Inc/180.*np.pi)*np.cos(Dec/180.*np.pi)\n",
+      "Bz = -Btot*np.sin(Inc/180.*np.pi)\n",
+      "print Bx, By, Bz"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1862.27664792 7253.08866839 -58536.7681111\n"
+       ]
+      }
+     ],
+     "prompt_number": 10
     },
     {
      "cell_type": "code",