{"id":2016,"date":"2012-06-11T01:18:05","date_gmt":"2012-06-10T16:18:05","guid":{"rendered":"https:\/\/regex.info\/blog\/2012-06-11\/2016"},"modified":"2012-06-11T01:18:05","modified_gmt":"2012-06-10T16:18:05","slug":"another-informal-location-logger-test-including-google-latitude","status":"publish","type":"post","link":"https:\/\/regex.info\/blog\/2012-06-11\/2016","title":{"rendered":"Another Informal Location-Logger Test, Including Google Latitude"},"content":{"rendered":"\n\n\n<div class='resize_warning' id='arw2016'>\n<b>NOTE<\/b>: Images with an <img class='raw' width='19' height='18' src='\/i\/s\/red_zoomup.gif'\/> icon next to them have been artificially shrunk to better fit your screen; click the icon to restore them, in place, to their regular size.\n<\/div>\n\n\n<div class='ic'><a name=\"114957\" href='\/i\/JF7_114957.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/JF7_114957_sm.jpg\" width=\"690\" height=\"431\"\nalt=\"desktop background image of tiered rice fields and mountain vistas, in the mountains of northwest Kyoto, Japan  --  Layer Upon Layer mountains of northwest Kyoto, Japan  --  Copyright 2012 Jeffrey Friedl, https:\/\/regex.info\/blog\/\"\nid=\"i114957\"\nphotostream=\"japan\"\ntitle=\"desktop background image of tiered rice fields and mountain vistas, in the mountains of northwest Kyoto, Japan  --  Layer Upon Layer mountains of northwest Kyoto, Japan  --  Copyright 2012 Jeffrey Friedl, https:\/\/regex.info\/blog\/\"\/><\/a>\n<br\/><span class=\"camera-info robots-nocontent\">Nikon D700 + Nikkor 70-200mm f\/2.8 @ 135mm &mdash; <sup>1<\/sup><big>\/<\/big>1250 sec, <span class='f'>f<\/span>\/2.8, ISO 200 &mdash;\n<a href='\/imageinfo.cgi?url=http%3A%2F%2Fregex.info%2Fi%2FJF7_114957.jpg'>map &amp; image data<\/a> &mdash; <a href='\/blog\/proximity\/i\/JF7_114957.jpg'>nearby photos<\/a><\/span>\n<br\/><span class='caption'>Layer Upon Layer<\/span>\n<br\/>mountains of northwest Kyoto, Japan\n<div class='dbg' id='x368442'\nonmouseover='document.getElementById(\"x368442\").style.color=\"red\"; this.style.borderColor=\"red\"'\nonmouseout= 'document.getElementById(\"x368442\").style.color=\"inherit\"; this.style.borderColor=\"\"'><b>Desktop-Background Versions<\/b>\n<br\/><span class='dbg2'><a class='quiet'\nhref='\/i\/JF7_114957_1280x800.jpg' title=\"1280 x 800 desktop background image of tiered rice fields and mountain vistas, in the mountains of northwest Kyoto, Japan\">1280<span style='margin:0 0.1em'>&times;<\/span>800<\/a>&nbsp;&nbsp;&middot;&nbsp;&nbsp;<a class='quiet'\nhref='\/i\/JF7_114957_1680x1050.jpg' title=\"1680 x 1050 desktop background image of tiered rice fields and mountain vistas, in the mountains of northwest Kyoto, Japan\">1680<span style='margin:0 0.1em'>&times;<\/span>1050<\/a>&nbsp;&nbsp;&middot;&nbsp;&nbsp;<a class='quiet'\nhref='\/i\/JF7_114957_1920x1200.jpg' title=\"1920 x 1200 desktop background image of tiered rice fields and mountain vistas, in the mountains of northwest Kyoto, Japan\">1920<span style='margin:0 0.1em'>&times;<\/span>1200<\/a>&nbsp;&nbsp;&middot;&nbsp;&nbsp;<a class='quiet'\nhref='\/i\/JF7_114957_2560x1600.jpg' title=\"2560 x 1600 desktop background image of tiered rice fields and mountain vistas, in the mountains of northwest Kyoto, Japan\">2560<span style='margin:0 0.1em'>&times;<\/span>1600<\/a><\/span><\/div>\n<\/div>\n\n<p>This is sort of a followup to January's &#8220;<a\nhref='\/blog\/2012-01-15\/1922'>Informal GPS Logger Test:\niPhone 4s GPS is Shockingly Good<\/a>&#8221; post about GPS and <a\nhref='http:\/\/en.wikipedia.org\/wiki\/GLONASS'>GLONASS<\/a> loggers. <span class='nobr'>We took a<\/span> drive today in the mountains, and <span class='nobr'>I took<\/span> the opportunity for\nanother informal test of location-logging technologies<\/p>\n\n\n<div class='ic'><a name=\"1\" href='\/i\/Drive-20120610-1.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-1_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Twisty\"\nid=\"iDrive_20120610_1\"\ntitle=\"Twisty\"\/><\/a>\n<br\/><span class='caption'>Twisty<\/span>\n<\/div>\n\n\n<ul>\n  <li><p><a style='color:#c07824' href='https:\/\/buy.garmin.com\/shop\/shop.do?cID=145&amp;pID=87771&amp;ra=true'>Garmin eTrex 20<\/a> GPS + GLONASS dedicated logger.<\/p><\/li>\n\n  <li><p><a style='color:red' href='http:\/\/xgps150.dualav.com\/'>Dual&reg; XGPS150<\/a> GPS-only bluetooth logger, recorded on an iPad with <a href='\/blog\/2012-04-29\/1988'>the Guru Maps app<\/a>.<\/p><\/li>\n\n  <li><p><b style='color:#6F6' >Apple iPhone 4s<\/b> (GPS + GLONASS) recorded via the <a href='http:\/\/itunes.apple.com\/us\/app\/geotagr-a.k.a.-geologtag\/id294194869?mt=8'>GeoTagr<\/a> app, which for some reason the company sent me for free out of the blue the other day (probably hoping for <span class='nobr'>a mention<\/span> just like this), so <span class='nobr'>I thought<\/span> I'd give it <span class='nobr'>a try.<\/span> <span class='nobr'>It worked<\/span> nicely, and the DropBox tracklog export was convenient.<\/p><\/li>\n\n  <li><p><a style='color:#66F' href='http:\/\/www.google.com\/latitude'>Google Latitude<\/a> on my iPhone, via <a href='http:\/\/itunes.apple.com\/us\/app\/google-latitude\/id306586497?mt=8'>Google's Latitude app<\/a>. <span class='nobr'>The app has<\/span> the same data available to it as the GeoTagr app (which is keeping the satellite antennas active), but Latitude works quite differently and ignores\/loses almost all location information.<\/p><\/li>\n\n<\/ul>\n\n<p>The general results were that the Garmin and Dual dedicated units were\ngood, the iPhone dedicated app was okay, and Google Latitude was\npathetic.<\/p>\n\n<p>I recently added native Google Latitude support to <a\nhref='\/blog\/lightroom-goodies\/gps'>my geoencoding-support\nplugin for Adobe Lightroom<\/a>, so have been trying it in various\nconditions lately. Frankly, it's horrible... really really bad as <span class='nobr'>a logger,<\/span>\nand even worse than that when you might be out of cell-phone range... but <span class='nobr'>I\nsuppose<\/span> it's better than nothing if it's all you've got.<\/p>\n\n<p>During the drive, the Garmin unit recorded 18,338 data points (one per second).<\/p>\n<p>The Dual&reg; unit with the iPad app recorded 7,568 points, about one every 2&frac12; seconds.<\/p>\n<p>The GeoTagr app recorded 2,494 points, about one every 7&frac13; seconds.<\/p>\n<p>Google Latitude recorded 39 points, about one every eight minutes.<\/p>\n\n<div class='ic'><a name=\"0\" href='\/i\/Drive-20120610-0.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-0_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Lopped Off but what's several kilometers among friends?\"\nid=\"iDrive_20120610_0\"\ntitle=\"Lopped Off but what's several kilometers among friends?\"\/><\/a>\n<br\/><span class='caption'>Lopped Off<\/span>\n<br\/>but what's several kilometers among friends?\n<\/div>\n\n<p>Google Latitude apparently doesn't use the GPS+GLONASS signal even when\nit's already there. <span class='nobr'>It apparently<\/span> doesn't try to keep too many data points\nin the first place, and just throws them away if it can't immediately\ncontact Google servers. (Amid these complaints <span class='nobr'>I should<\/span> point out that <span class='nobr'>I\nfully<\/span> realize and appreciate that it's <span class='nobr'>a cost<\/span>-free service I'm also free\nnot to use.)<\/p>\n\n<p>Google Latitude is not really designed for this, and it shows, so it's\nbest left as an emergency backup. Even in the city with excellent GPS and\ncell reception, it was pretty bad...<\/p>\n\n<div class='ic tight'><a name=\"2\" href='\/i\/Drive-20120610-2.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-2_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Zorro\"\nid=\"iDrive_20120610_2\"\ntitle=\"Zorro\"\/><\/a>\n<br\/><span class='caption'>Zorro<\/span>\n<\/div>\n\n\n<p>The blip in the green iPhone track above is from when we were stopped at <span class='nobr'>a traffic<\/span> light. <span class='nobr'>The iPhone<\/span> seemed to really prefer moving, and tended to wander all over when actually stationary...<\/p>\n\n<div class='ic'><a name=\"3\" href='\/i\/Drive-20120610-3.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-3_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Convenience-Store Stop\"\nid=\"iDrive_20120610_3\"\ntitle=\"Convenience-Store Stop\"\/><\/a>\n<br\/><span class='caption'>Convenience-Store Stop<\/span>\n<\/div>\n\n\n<p>We stopped for a longer time for <span class='nobr'>a late<\/span> lunch at the wonderful mountain\ncafe &#8220;Yama no Ie Hasegawa&#8221; (\u5c71\u306e\u5bb6\u306f\u305b\u304c\u308f), <a\nhref='\/blog\/2010-12-12\/1678'>presented here<\/a> <span class='nobr'>a year<\/span> and\n<span class='nobr'>a half<\/span> ago. While we relaxed, the loggers were apparently running all over\nthe place...<\/p>\n\n<div class='ic'><a name=\"6\" href='\/i\/Drive-20120610-6.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-6_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Lunch\"\nid=\"iDrive_20120610_6\"\ntitle=\"Lunch\"\/><\/a>\n<br\/><span class='caption'>Lunch<\/span>\n\n<\/div>\n\n\n\n<div class='ic tight'><a name=\"4\" href='\/i\/Drive-20120610-4.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-4_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Convincing Drift\"\nid=\"iDrive_20120610_4\"\ntitle=\"Convincing Drift\"\/><\/a>\n<br\/><span class='caption'>Convincing Drift<\/span>\n<\/div>\n\n<p>The green iPhone track seems to pretty well match <span class='nobr'>a set<\/span> of roads, but\nthe red (Dual) and orange (Garmin) tracks are correct.<\/p>\n\n\n<div class='ic'><a name=\"5\" href='\/i\/Drive-20120610-5.jpg'\n><img loading=\"lazy\" decoding=\"async\" src=\"\/i\/Drive-20120610-5_sm.jpg\" width=\"690\" height=\"445\"\nalt=\"Going and Coming The green iPhone blips are likely pauses due to traffic\"\nid=\"iDrive_20120610_5\"\ntitle=\"Going and Coming The green iPhone blips are likely pauses due to traffic\"\/><\/a>\n<br\/><span class='caption'>Going and Coming<\/span>\n<br\/>The green iPhone blips are likely pauses due to traffic\n<\/div>\n\n\n<p>The real pleasure of the trip (from <span class='nobr'>a mapping<\/span>\/location standpoint) was\nusing the offline maps on my iPad with real-time tracking via the Dual&reg;\nbluetooth unit that <a\nhref='\/blog\/2012-04-29\/1988#comment-46129'><span class='nobr'>I was<\/span> alerted\nto<\/a> in <span class='nobr'>a comment<\/span> left on an earlier post. <span class='nobr'>It was a<\/span> pleasure to interact\ninstantly on the huge iPad screen, even deep in the mountains far away from any Internet connectivity.\n(<span class='nobr'>I just<\/span> wish that Dual&reg; had <span class='nobr'>a name<\/span> that wasn't <span class='nobr'>a common<\/span> English word, so that <span class='nobr'>I could<\/span>\nrefer to it without having to add the &#8220;&reg;&#8221; to make it clear I'm referring to <span class='nobr'>a name.<\/span> :-))\n<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>This is sort of a followup to January's \"Informal GPS Logger Test: iPhone 4s GPS is Shockingly Good\" post about GPS and GLONASS loggers. We took a drive today in the mountains, and I took the opportunity for another informal test of location-logging technologies<\/p> <p>Garmin eTrex 20 GPS + GLONASS dedicated logger.<\/p> <p>Dual&reg; XGPS150 GPS-only bluetooth logger, recorded on an iPad with the Guru Maps app.<\/p> <p><b style='color:#6F6' >Apple iPhone 4s<\/b> (GPS + GLONASS) recorded via the GeoTagr app, which for some reason the company sent me for free out of the blue the other day (probably hoping for a [...]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,1,2,6,4],"tags":[],"_links":{"self":[{"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/posts\/2016"}],"collection":[{"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/comments?post=2016"}],"version-history":[{"count":0,"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/posts\/2016\/revisions"}],"wp:attachment":[{"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/media?parent=2016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/categories?post=2016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/regex.info\/blog\/wp-json\/wp\/v2\/tags?post=2016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}