{"id":226,"date":"2010-08-05T23:36:53","date_gmt":"2010-08-05T21:36:53","guid":{"rendered":"http:\/\/www.balloonloggers.org\/?p=226"},"modified":"2010-08-05T23:36:53","modified_gmt":"2010-08-05T21:36:53","slug":"converting-tracks-using-gpsbabel","status":"publish","type":"post","link":"https:\/\/www.balloonloggers.org\/index.php\/converting-tracks-using-gpsbabel\/","title":{"rendered":"Converting tracks using GPSBabel"},"content":{"rendered":"<p>GPSBabel is a free software tool that can be used to convert different track file formats. It can be downloaded from <a href=\"http:\/\/www.gpsbabel.org\" target=\"_blank\">gpsbabel.org<\/a>.<\/p>\n<p><strong>Convert to different file formats<\/strong><br \/>\nThe following command converts a logger igc file into a OziExplorer plt file. Please note, that 2 files are written. output.plt is the file with barometric altitude while output-1.plt uses GPS (above MSL) altitude.<br \/>\n<code>gpsbabel -t -i igc -f -o ozi -F output.plt<\/code><\/p>\n<p>The above example generated OziExplorer plt files. GPSBabel supports many track file formats.<\/p>\n<table>\n<tr>\n<td><strong>Format<\/strong><\/td>\n<td>&nbsp;<\/td>\n<td><strong>-o parameter<\/strong><\/td>\n<\/tr>\n<tr>\n<td>OziExplorer<\/td>\n<td><\/td>\n<td>ozi<\/td>\n<\/tr>\n<tr>\n<td>Garmin PCX5<\/td>\n<td><\/td>\n<td>pcx<\/td>\n<\/tr>\n<tr>\n<td>GPX XML<\/td>\n<td><\/td>\n<td>gpx<\/td>\n<tr>\n<tr>\n<td>MemoryMap<\/td>\n<td><\/td>\n<td>mmo<\/td>\n<\/tr>\n<\/table>\n<p>A list of all supported formats is listed on the <a href=\"http:\/\/www.gpsbabel.org\/capabilities.html\" target=\"_blank\">GPSBabel homepage<\/a>.<\/p>\n<p><strong>QNH correction<\/strong><br \/>\nThe logger stores the barometric altitude with QNH=1013.25. In order to adjust for the real altitude the barometric altitude must be corrected using the following formula:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-210\" title=\"qnh-correction\" src=\"http:\/\/www.balloonloggers.org\/wp-content\/uploads\/2010\/08\/qnh-correction.gif\" alt=\"qnh-correction\" width=\"218\" height=\"55\" \/><\/p>\n<p>This can also be done with GPSBabel:<br \/>\n<code>gpsbabel -t -i ozi -f output.plt -x height,add=[dalt] -o ozi -F output-2.plt<\/code><br \/>\nwith [dalt] beeing delta alt as calculated in the first line of the formula above. Of course the above line can be called with different file formats as well.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GPSBabel is a free software tool that can be used to convert different track file formats. It can be downloaded from gpsbabel.org. Convert to different file formats The following command converts a logger igc file into a OziExplorer plt file. Please note, that 2 files are written. output.plt is the file with barometric altitude while [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[6],"tags":[],"_links":{"self":[{"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/posts\/226"}],"collection":[{"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/comments?post=226"}],"version-history":[{"count":1,"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/posts\/226\/revisions"}],"predecessor-version":[{"id":227,"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/posts\/226\/revisions\/227"}],"wp:attachment":[{"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/media?parent=226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/categories?post=226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.balloonloggers.org\/index.php\/wp-json\/wp\/v2\/tags?post=226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}