fix wfdb multi-segment reading and added new unit tests

Author: cx1111

README.rst

@@ -120,7 +120,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Matched waveform examples\n",
+    "### Multisegment waveform examples\n",
     "\n",
     "The following sections load and plots waveforms from the MIMIC matched waveform database. These waveforms have been matched to clinical data in the MIMIC Clinical database. The input records are multi-segment (made up of multiple individual WFDB records) and relatively long.\n",
     "\n",
@@ -137,7 +137,9 @@
    "outputs": [],
    "source": [
     "# Demo 6 - Read the multi-segment record and plot waveforms from the MIMIC matched waveform database. \n",
-    "record=wfdb.rdsamp('sampledata/matched/s25047/s25047-2704-05-04-10-44')\n",
+    "import wfdb\n",
+    "from IPython.display import display\n",
+    "record=wfdb.rdsamp('sampledata/multisegment/s25047/s25047-2704-05-04-10-44')\n",
     "wfdb.plotrec(record, title='Record s25047-2704-05-04-10-44') \n",
     "display(record.__dict__)\n",
     "\n",
@@ -155,7 +157,7 @@
    "source": [
     "# Demo 7 - Read the multi-segment record and plot waveforms from the MIMIC matched waveform database.\n",
     "# Notice that some channels have no valid values to plot\n",
-    "record = wfdb.rdsamp('sampledata/matched/s00001/s00001-2896-10-10-00-31', sampfrom = 3000000, sampto = 4000000)\n",
+    "record = wfdb.rdsamp('sampledata/multisegment/s00001/s00001-2896-10-10-00-31', sampfrom = 3000000, sampto = 4000000)\n",
     "wfdb.plotrec(record, title='Record s00001/s00001-2896-10-10-00-31') \n",
     "display(record.__dict__)\n",
     "\n",

demo.ipynb

@@ -11,7 +11,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 2,
    "metadata": {
     "collapsed": false
    },
@@ -20,22 +20,6 @@
     "import wfdb"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "metadata": {
-    "collapsed": false,
-    "scrolled": true
-   },
-   "outputs": [],
-   "source": [
-    "import wfdb\n",
-    "# Read part of a record from Physiobank\n",
-    "sig, fields = wfdb.srdsamp('a103l', sampfrom = 50000, channels = [0,1], pbdir = 'challenge/2015/training')\n",
-    "# Write a local WFDB record (manually inserting fields)\n",
-    "wfdb.wrsamp('ecgrecord', fs = 250, units = ['mV', 'mV'], signames = ['I', 'II'], p_signals = sig, fmt = ['16', '16'])"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,

demoimg1.png renamed to demoimg.png

@@ -0,0 +1,5 @@
+v102s/3 4 250 225000
+v102s_1 75000
+v102s_2 75000
+v102s_3 75000
+# This is a fixed layout multi-segment record made by piecing together the same record from the 2015 challenge

devtests.ipynb

@@ -0,0 +1,7 @@
+v102s_1 4 250 75000
+v102s.dat 212 2281/mV 0 0 -26 -9286 0 II
+v102s.dat 212 1856/mV 0 0 340 2647 0 V
+v102s.dat 212 1250/NU 0 0 -46 -11021 0 PLETH
+v102s.dat 212 38880/NU 0 0 339 12236 0 RESP
+#Ventricular_Tachycardia
+#False alarm

sampledata/multisegment/fixed1/v102s.dat

@@ -0,0 +1,7 @@
+v102s_2 4 250 75000
+v102s.dat 212 2281/mV 0 0 -26 -9286 0 II
+v102s.dat 212 1856/mV 0 0 340 2647 0 V
+v102s.dat 212 1250/NU 0 0 -46 -11021 0 PLETH
+v102s.dat 212 38880/NU 0 0 339 12236 0 RESP
+#Ventricular_Tachycardia
+#False alarm

sampledata/multisegment/fixed1/v102s.hea

@@ -0,0 +1,7 @@
+v102s_3 4 250 75000
+v102s.dat 212 2281/mV 0 0 -26 -9286 0 II
+v102s.dat 212 1856/mV 0 0 340 2647 0 V
+v102s.dat 212 1250/NU 0 0 -46 -11021 0 PLETH
+v102s.dat 212 38880/NU 0 0 339 12236 0 RESP
+#Ventricular_Tachycardia
+#False alarm