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POLocation.getLatitude method returns non-precisioned double which is bad for GPS cordinates
 

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  1. POLocation.getLatitude method returns non-precisioned double which is bad for GPS cordinates
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    <p><strong>Status:</strong> Accepted best available answer with thanks after a week or so. Awaiting / inviting more answers with citations </p> <p>This matter was complex. I am really thankful to ALL commentators and specially asciimo,Gabe Sechan,AlexWien. Please vote and/or answer further after due study.</p> <p><strong>Senario:</strong></p> <p>The <code>Location.getLatitude()</code> in android <strong>returns double</strong> which has <strong>low precision</strong>. </p> <pre><code>Api http://developer.android.com/reference/android/location/Location.html </code></pre> <p><strong>Example:</strong></p> <p>Edit-2 begin</p> <p>I just tried to send GPS cordinates by emulator and 111.422006 auto converted to 111.422004999999998 in <code>Double dlongi = loc.getLongitude(); String longi = dlati.toString(); System.out.println(longi);</code></p> <p>Edit-2 end</p> <p>Edit-3 begin</p> <p>I sent the coordinates by emulator (by GPS device in reality) as 111.422006, the android API received it as double value of 111.42004999999998 </p> <p>Edit-3 end</p> <p><strong>Too late for:</strong> BigDecimal class is too late for that as it already gives a d/Double.</p> <p><strong>Question:</strong> What if full accuracy is required.</p> <p>What is a way to get it with good precision or in another form other than doubles?</p> <p>Just thought to share and make others notice this too.</p> <p><strong>Requests:</strong> Please do not answer until you are sure of a good answer with <strong><code>citation</code></strong> . This would help the communtiy.</p> <p><strong>Edit:</strong></p> <p>Looks like Gps coordinats by normal GPS devices are them self not 100% FULLY accurate near to 3 meter for example but looks like <strong>doubles further decrease the accuracy</strong>. that was my question actually.</p>
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    1. USMasood Ahmad
    1. USMasood Ahmad
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    1. COOut of curiosity, why does this matter to you?
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      1. USKarakuri
    2. CO@Karakuri . :) GPS cordinates should be _exact_ as much as possible. and by chance my application cannot tolerate slight differences. Others might face the same situation, so I made a post
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      1. USMasood Ahmad
    3. COIf your app can't tolerate slight differences your app won't work. Different phones have different quality GPS recievers, some of which may not be accurate to even a meter. In addition, at any time the US military can (and does scramble the signal which can introduce inaccuracies of 20 meters. If you require such exact measurements your app is misdesigned.
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      1. USGabe Sechan
 

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