GpsDrive way.txt file format. A space seperated format file. Tested
against GpsDrive v 1.30 found @ http://www.kraftvoll.at/software.
Contributed by Alan Curry.
+
+ GPSDRIVETRACK
+
+ Format used by GpsDrive to save tracks. Like GPSDRIVE a space
+ seperated format file. See above for a link to GpsDrive.
+ Contributed by Tobias Minich.
Geocaching DB
-i gpx -f in.gpx
-o bcr,index=1,name="From A to B",radius=6371012 \
-F a_to_b.bcr
-
+
+ OPENOFFICE
+ Tab seperated export-all (except geocahing data) file format.
+ Intended to serve as source for number-processing applications
+ like OpenOffice, Ploticus and others. Tab was chosen as delimiter
+ because it is a) supported by both OpenOffice and Ploticus and
+ b) is not ',', so you can use 'sed -i "s/./,/g" <x>.csv' to adapt it to
+ locales where ',' is used as decimal seperator.
+ Contributed by Tobias Minich.
DATA FILTERS
-i gpx -f in.gpx \
-x track,pack,split=4h,title="LOG # %c" \
-o gpx -F out.gpx
+
+ DOP
+
+ This filter 'fixes' gps data by discarding points with a hdop
+ and/or vdop over a set limit. If you give both the hdop and a
+ vdop options, by default points that exceed EITHER are discarded
+ (OR). This filter processes waypoints, tracks, and routes.
+
+ HDOP (float)
+
+ Points with a hdop exceeding the given value are discarded.
+
+ VDOP (float)
+
+ Points with a vdop exceeding the given value are discarded.
+
+ HDOPANDVDOP
+
+ Only useful if both hdop and vdop are given. Now logical AND
+ is used, i.e. only points exceeding both given values are
+ discarded.
+
+ Example: gpsbabel \
+ -i gpx -f in.gpx \
+ -x fix,hdop=10,vdop=20,hdopandvdop \
+ -o gpx -F out.gpx
+
+ Contributed by Tobias Minich.
--- /dev/null
+/*
+ Suppress points based on high Degree of Precision (DOP) values.
+
+ Copyright (C) 2005 Robert Lipe, robertlipe@usa.net
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111 USA
+
+ */
+#include <stdio.h>
+#include "defs.h"
+
+extern queue waypt_head;
+
+static char *hdopopt = NULL;
+static char *vdopopt = NULL;
+static char *andopt = NULL;
+static double hdopf;
+static double vdopf;
+
+static
+arglist_t fix_args[] = {
+ {"hdop", &hdopopt, "Suppress waypoints with higher hdop",
+ "-1.0", ARGTYPE_BEGIN_REQ | ARGTYPE_FLOAT},
+ {"vdop", &vdopopt, "Suppress waypoints with higher vdop",
+ "-1.0", ARGTYPE_END_REQ | ARGTYPE_FLOAT},
+ {"hdopandvdop", &andopt, "Link hdop and vdop supression with AND",
+ NULL, ARGTYPE_BOOL},
+ {0, 0, 0, 0, 0}
+};
+
+static void
+fix_process_track(const route_head *trk)
+{
+ waypoint * waypointp;
+ queue *elem, *tmp;
+
+ QUEUE_FOR_EACH((queue *)&trk->waypoint_list, elem, tmp) {
+
+ int del = 0;
+ int delh = 0;
+ int delv = 0;
+
+ waypointp = (waypoint *)elem;
+
+ if ((hdopf >= 0.0) && (waypointp->hdop > hdopf))
+ delh = 1;
+ if ((vdopf >= 0.0) && (waypointp->vdop > vdopf))
+ delv = 1;
+
+ if (andopt)
+ del = delh && delv;
+ else
+ del = delh || delv;
+
+ if (del) {
+ waypt_del(waypointp);
+ waypt_free(waypointp);
+ }
+
+ }
+}
+
+void
+fix_process(void)
+{
+ waypoint * waypointp;
+
+ int tc = track_count();
+ int rc = route_count();
+
+ queue *elem, *tmp;
+ extern queue waypt_head;
+
+ // Filter waypoints
+
+ QUEUE_FOR_EACH(&waypt_head, elem, tmp) {
+
+ int del = 0;
+ int delh = 0;
+ int delv = 0;
+
+ waypointp = (waypoint *)elem;
+
+ if ((hdopf >= 0.0) && (waypointp->hdop > hdopf))
+ delh = 1;
+ if ((vdopf >= 0.0) && (waypointp->vdop > vdopf))
+ delv = 1;
+
+ if (andopt)
+ del = delh && delv;
+ else
+ del = delh || delv;
+
+ if (del) {
+ waypt_del(waypointp);
+ waypt_free(waypointp);
+ }
+
+ }
+
+ // Filter tracks
+ if (tc > 0)
+ track_disp_all(fix_process_track, NULL, NULL);
+
+ // And routes
+ if (rc > 0)
+ route_disp_all(fix_process_track, NULL, NULL);
+
+}
+
+void
+fix_init(const char *args)
+{
+ if (hdopopt)
+ hdopf = atof(hdopopt);
+ else
+ hdopf = -1.0;
+ if (vdopopt)
+ vdopf = atof(vdopopt);
+ else
+ vdopf = -1.0;
+}
+
+void
+fix_deinit(void)
+{
+}
+
+filter_vecs_t fix_vecs = {
+ fix_init,
+ fix_process,
+ fix_deinit,
+ NULL,
+ fix_args
+};
projects / gpsbabel.git / commitdiff