Combine cheta logical intervals

combine-intervals.ipynb

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     "text": [
      "Using matplotlib backend: MacOSX\n"
     ]
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   "source": [
    "from cheta.utils import logical_intervals\n",
    "from kadi.events.query import combine_intervals\n",
    "from cxotime import CxoTime\n",
    "from astropy.time import Time\n",
    "import astropy.units as u\n",
    "import matplotlib.pyplot as plt\n",
    "%matplotlib\n",
    "import operator"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "t = Time('2000:001') + np.arange(1, 1000) * u.s"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "start = t.yday[0]\n",
    "stop = t.yday[-1]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "t_sec = t.cxcsec"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "y1 = np.sin(t_sec * 2 * np.pi / 100)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": true
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   "outputs": [],
   "source": [
    "y2 = np.sin(t_sec * 2 * np.pi / 150)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "intervals0 = logical_intervals(t_sec, y1 > 0.75)\n",
    "intervals1 = logical_intervals(t_sec, y2 > 0.75)\n",
    "intervals01 = logical_intervals(t_sec, (y1 > 0.75) & (y2 > 0.75))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "<i>Table length=3</i>\n",
       "<table id=\"table140526522176120\" class=\"table-striped table-bordered table-condensed\">\n",
       "<thead><tr><th>datestart</th><th>datestop</th><th>duration</th><th>tstart</th><th>tstop</th></tr></thead>\n",
       "<thead><tr><th>str21</th><th>str21</th><th>float64</th><th>float64</th><th>float64</th></tr></thead>\n",
       "<tr><td>2000:001:00:04:16.500</td><td>2000:001:00:04:32.500</td><td>16.0</td><td>63072320.684</td><td>63072336.684</td></tr>\n",
       "<tr><td>2000:001:00:09:16.500</td><td>2000:001:00:09:32.500</td><td>16.0</td><td>63072620.684</td><td>63072636.684</td></tr>\n",
       "<tr><td>2000:001:00:14:16.500</td><td>2000:001:00:14:32.500</td><td>15.9999999925</td><td>63072920.684</td><td>63072936.684</td></tr>\n",
       "</table>"
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      "text/plain": [
       "<Table length=3>\n",
       "      datestart              datestop       ...    tstart       tstop    \n",
       "        str21                 str21         ...   float64      float64   \n",
       "--------------------- --------------------- ... ------------ ------------\n",
       "2000:001:00:04:16.500 2000:001:00:04:32.500 ... 63072320.684 63072336.684\n",
       "2000:001:00:09:16.500 2000:001:00:09:32.500 ... 63072620.684 63072636.684\n",
       "2000:001:00:14:16.500 2000:001:00:14:32.500 ... 63072920.684 63072936.684"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "intervals01"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "intvls0 = [(intvl['datestart'], intvl['datestop']) for intvl in intervals0]\n",
    "intvls1 = [(intvl['datestart'], intvl['datestop']) for intvl in intervals1]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[('2000:001:00:04:16.500', '2000:001:00:04:32.500'),\n",
       " ('2000:001:00:09:16.500', '2000:001:00:09:32.500'),\n",
       " ('2000:001:00:14:16.500', '2000:001:00:14:32.500')]"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "combine_intervals(operator.and_, intvls0, intvls1, start, stop)"
   ]
  },
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   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
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