GPX Editor
JavaFX editor for gpx files. And why would anyone need a new gpx file editor? Unfortunately, my old working horse GPS-Track-Analyse.NET isn't maintained and updated anymore. While its still doing all its things perfectly it lacks three features: batch mode to work on multiple files; UI mode to work on multiple tracks / tracksegments. View, edit and create GPX files online: add, move and delete points, merge multiple files, reverse, add timestamps, edit waypoints and more! Gpx.studio is an online GPX file editor which allows users to create, view and edit files. We respect the privacy of our users and do not collect any personal information except anonymous information such as the number of page views and clicks on buttons to help us enhance your overall experience.
Load, modify and save your GPX 1.1 files. Add and remove waypoints, edit track and routes, simplify tracks (reducing file's size), clean recorded data, add and edit GPX metadata, edit waypoint, route and track properties, all with real-time preview.
The problem: Sometimes you have geographic data that consists only of latitudes and longitudes, but you want to know the altitudes as well — because, for example, you want to colorize points by height above sea level, or draw a profile of a track. Here are some common reasons why you might have 'flat' or incomplete data:
- Your GPS device does not log altitude, or you had poor satellite reception when you recorded the track.
- Your GPS device does log altitude, but it's not very accurate.
- You drew a track using the drawing tools in Google Earth or a similar application, like GPS Visualizer's Sandbox.
- You have a KML file that came from Google Maps or Google Earth's 'driving directions' feature.
- You created a route in Google Maps and have the URL of that route.
- You have an NMEA log file that contains only 'GPRMC' sentences, not 'GPGGA.'
Gpx Editor Online
Support GPS Visualizer
If you find the utilities on GPSVisualizer.com interesting, time-saving, or just plain fun, you can say 'thanks' — and encourage further development — by clicking the button above and making a contribution
Solution #1: DEM database
Gpx Editor Free
GPS Visualizer's map, profile, and conversion programs have the ability to instantly add elevation data — from a DEM (digital elevation model) database — to any type of GPS file. If you just want to draw a profile, or convert a single data file to plain text or GPX while adding elevation, you can use the simple form right here:
Or, look in GPS Visualizer's various input forms for the menu called 'Add DEM elevation data,' and choose one of the elevation databases (described in the table below). Complete copies of the SRTM3 and USGS NED databases, as well as a large number of SRTM1 and ASTER tiles, are stored on GPS Visualizer's server — that's more than 250GB of raw data.
Note that the elevation-adding feature will erase any existing altitude data (for example, from a GPS) that might already be in your file. Often, this is desirable; profiles made with DEM data are usually 'smoother' looking than GPS, and typically contain fewer gaps or suspicious readings. (Speaking of gaps, there are a few in NASA's SRTM data, and that's unavoidable. If GPS Visualizer runs into one of these, it will not overwrite those elevations in your input data.)
DEM data sources
| NED (USGS) | The U.S. Geological Survey's excellent National Elevation Dataset covers the United States, Canada, and Mexico. 1 arc-second (~30-meter) horizontal resolution is available in most areas (NED1). For Alaska, 60-meter data is also available (NED2). |
| SRTM1 (NASA) | NASA's SRTM1 database (from the Space Shuttle Radar Topography Mission) has a resolution of about 30 meters. Previously, SRTM1 data was only available for the United States (and was not very useful because NED1 is generally better), but recently NASA has released SRTM1 tiles for the entire world. GPS Visualizer's server does not contain the full global dataset, but it does contain all of Europe, Central America, Japan, South Korea, Taiwan, and New Zealand, as well as most of Australia and parts of South Africa. Additional locations may be installed upon request. |
| ODP1 | Digital 1-arcsecond LIDAR terrain models of European countries, compiled and resampled by Sonny (sonnyy7@gmail.com); hosted by Austria's OpenDataPortal. These are high-quality digital elevation files from Western, Northern, and Central Europe and Iceland which have been copied to GPS Visualizer's server. Most of the files are a combination of SRTM1 and local LIDAR and/or survey data, and they have a horizontal resolution of 1 arc-second (about 30 meters north-south and 20 meters east-west). In most locations, they are more accurate than SRTM1 files. |
| ASTER | The ASTER GDEM is a joint product of NASA and the Japanese Ministry of Economy, Trade, and Industry (METI). ASTER has very good 30-meter coverage of the entire world, but the awkward download process and the massive size of the database make it impractical to store all of it on GPSVisualizer.com. (As with SRTM1 data, additional files can be added upon request.) |
| SRTM3 (NASA) | NASA's SRTM3 v3 dataset includes 90-meter resolution for the entire world. SRTM3 data normally only goes up to about 60° latitude, but thanks to the efforts of the volunteers at Viewfinder Panoramas, GPS Visualizer has the polar regions covered as well. |
| 'Best available' | GPS Visualizer will automatically select the best DEM data available in a given location. The quality ranking is as follows: NED1, NED2, ODP1, SRTM1, ASTER, SRTM3. Click here for a map. |
Solution #2: Google Maps API
The Google Maps API is able to return elevations for points anywhere in the world; these are usually (but not always) the same elevations you'd see in Google Earth. Google's data comes from a variety of sources and is sometimes (but not always) more accurate than the SRTM databases.
The drawback is that there is a limit on the number of queries that can be performed in a day by each user, so GPS Visualizer cannot ask Google for all of your points. To get around this, GPS Visualizer contains a JavaScript-based Elevation Lookup Utility that has your browser perform the queries. To use this tool, your data must be in simple tabular format (easily accomplished using GPSV's plain-text converter); you must remove any existing elevation data; and you must have your own Google Maps API Key. Further instructions are on the Elevation Lookup Utility page.
Quick single-point DEM database lookup:
Coordinates (lat,lon): FIND ELEVATION
→The problem: Sometimes you have geographic data that consists only of latitudes and longitudes, but you want to know the altitudes as well — because, for example, you want to colorize points by height above sea level, or draw a profile of a track. Here are some common reasons why you might have 'flat' or incomplete data:
- Your GPS device does not log altitude, or you had poor satellite reception when you recorded the track.
- Your GPS device does log altitude, but it's not very accurate.
- You drew a track using the drawing tools in Google Earth or a similar application, like GPS Visualizer's Sandbox.
- You have a KML file that came from Google Maps or Google Earth's 'driving directions' feature.
- You created a route in Google Maps and have the URL of that route.
- You have an NMEA log file that contains only 'GPRMC' sentences, not 'GPGGA.'
Support GPS Visualizer
If you find the utilities on GPSVisualizer.com interesting, time-saving, or just plain fun, you can say 'thanks' — and encourage further development — by clicking the button above and making a contribution
Solution #1: DEM database
GPS Visualizer's map, profile, and conversion programs have the ability to instantly add elevation data — from a DEM (digital elevation model) database — to any type of GPS file. If you just want to draw a profile, or convert a single data file to plain text or GPX while adding elevation, you can use the simple form right here:
Or, look in GPS Visualizer's various input forms for the menu called 'Add DEM elevation data,' and choose one of the elevation databases (described in the table below). Complete copies of the SRTM3 and USGS NED databases, as well as a large number of SRTM1 and ASTER tiles, are stored on GPS Visualizer's server — that's more than 250GB of raw data.
Note that the elevation-adding feature will erase any existing altitude data (for example, from a GPS) that might already be in your file. Often, this is desirable; profiles made with DEM data are usually 'smoother' looking than GPS, and typically contain fewer gaps or suspicious readings. (Speaking of gaps, there are a few in NASA's SRTM data, and that's unavoidable. If GPS Visualizer runs into one of these, it will not overwrite those elevations in your input data.)
DEM data sources
| NED (USGS) | The U.S. Geological Survey's excellent National Elevation Dataset covers the United States, Canada, and Mexico. 1 arc-second (~30-meter) horizontal resolution is available in most areas (NED1). For Alaska, 60-meter data is also available (NED2). |
| SRTM1 (NASA) | NASA's SRTM1 database (from the Space Shuttle Radar Topography Mission) has a resolution of about 30 meters. Previously, SRTM1 data was only available for the United States (and was not very useful because NED1 is generally better), but recently NASA has released SRTM1 tiles for the entire world. GPS Visualizer's server does not contain the full global dataset, but it does contain all of Europe, Central America, Japan, South Korea, Taiwan, and New Zealand, as well as most of Australia and parts of South Africa. Additional locations may be installed upon request. |
| ODP1 | Digital 1-arcsecond LIDAR terrain models of European countries, compiled and resampled by Sonny (sonnyy7@gmail.com); hosted by Austria's OpenDataPortal. These are high-quality digital elevation files from Western, Northern, and Central Europe and Iceland which have been copied to GPS Visualizer's server. Most of the files are a combination of SRTM1 and local LIDAR and/or survey data, and they have a horizontal resolution of 1 arc-second (about 30 meters north-south and 20 meters east-west). In most locations, they are more accurate than SRTM1 files. |
| ASTER | The ASTER GDEM is a joint product of NASA and the Japanese Ministry of Economy, Trade, and Industry (METI). ASTER has very good 30-meter coverage of the entire world, but the awkward download process and the massive size of the database make it impractical to store all of it on GPSVisualizer.com. (As with SRTM1 data, additional files can be added upon request.) |
| SRTM3 (NASA) | NASA's SRTM3 v3 dataset includes 90-meter resolution for the entire world. SRTM3 data normally only goes up to about 60° latitude, but thanks to the efforts of the volunteers at Viewfinder Panoramas, GPS Visualizer has the polar regions covered as well. |
| 'Best available' | GPS Visualizer will automatically select the best DEM data available in a given location. The quality ranking is as follows: NED1, NED2, ODP1, SRTM1, ASTER, SRTM3. Click here for a map. |
Solution #2: Google Maps API
The Google Maps API is able to return elevations for points anywhere in the world; these are usually (but not always) the same elevations you'd see in Google Earth. Google's data comes from a variety of sources and is sometimes (but not always) more accurate than the SRTM databases.
The drawback is that there is a limit on the number of queries that can be performed in a day by each user, so GPS Visualizer cannot ask Google for all of your points. To get around this, GPS Visualizer contains a JavaScript-based Elevation Lookup Utility that has your browser perform the queries. To use this tool, your data must be in simple tabular format (easily accomplished using GPSV's plain-text converter); you must remove any existing elevation data; and you must have your own Google Maps API Key. Further instructions are on the Elevation Lookup Utility page.
Quick single-point DEM database lookup:
Edit Gpx
Coordinates (lat,lon): FIND ELEVATION→