title: How can I calculate GPS DoP (Dilution of Precision) using iPhone sensor data?
body: <p>I am gathering data from an iPhone 6 using the SensorLog app. Other devices offer the output of GPS_DOP (GPS Dilution of Precision) which I use in my algorithms. However, SensorLog gives <em>locationVerticalAccuracy</em> and <em>locationHorizontalAccuracy</em>. I want to classify my data based on <a href="https://en.wikipedia.org/wiki/Dilution_of_precision_(GPS)#Meaning_of_DOP_Values" rel="nofollow">this rating</a>.</p>
  
  <p>Is the <em>GPS_DOP</em> the same as<em>locationVerticalAccuracy</em> or should I calculate it somehow?</p>
  
  <p><strong>Otherwise</strong>,</p>
  
  <p>is there a rough calculation of DoP depending on metric errors?</p>