Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
Next revisionBoth sides next revision
en:help:v2:landmarks:statistics [2016/04/28 12:21] – [Statistics] alpinequesten:help:v2:landmarks:statistics [2017/09/12 11:21] – external edit 127.0.0.1
Line 1: Line 1:
 <sub>[[en:help|Online Help]] > [[en:help:v2|AlpineQuest 2.x]] > [[en:help:v2:landmarks|Landmarks]]</sub> <sub>[[en:help|Online Help]] > [[en:help:v2|AlpineQuest 2.x]] > [[en:help:v2:landmarks|Landmarks]]</sub>
 +
 ====== Details and statistics ====== ====== Details and statistics ======
 \\ \\
Line 20: Line 21:
 The statistics section is divided in sub-sections: The statistics section is divided in sub-sections:
   * The overall statistics {{:icon_03.png?nolink}}, listing ''"**Date**"'' (the start date and time), ''"**Time**"'' (the total time elapsed between the start and the end), ''"**Stopped**"'' (the total stopped time, sum of rest time of all breaks), ''"**Length**"'' (the total length) and ''"**Calories**"'' (estimation based on the length, speed, inclines and user weight);   * The overall statistics {{:icon_03.png?nolink}}, listing ''"**Date**"'' (the start date and time), ''"**Time**"'' (the total time elapsed between the start and the end), ''"**Stopped**"'' (the total stopped time, sum of rest time of all breaks), ''"**Length**"'' (the total length) and ''"**Calories**"'' (estimation based on the length, speed, inclines and user weight);
-  * Statistics on elevations {{:icon_04.png?nolink}}, listing ''"**Min/Max**"'' (the overall minimum and maximum elevations) and ''"**Gain/Loss**"'' (the [[https://en.wikipedia.org/wiki/Cumulative_elevation_gain|cumulative elevation gain]] and loss);+  * Statistics on elevations {{:icon_04.png?nolink}}, listing ''"**Min/Max**"'' (the overall minimum and maximum elevations) and ''"**Gain/Loss**"'' (the cumulative elevation gain and loss, see below);
   * Statistics on moving speeds {{:icon_04.png?nolink}} (ignoring stopped times), listing ''"**Total**"'' (the speed when moving, computed from the total length and the moving time; the total time minus the stopped time) and ''"**Up**"'' (the ascent speed).   * Statistics on moving speeds {{:icon_04.png?nolink}} (ignoring stopped times), listing ''"**Total**"'' (the speed when moving, computed from the total length and the moving time; the total time minus the stopped time) and ''"**Up**"'' (the ascent speed).
  
Line 29: Line 30:
 \\ \\
  
-===== Statistics settings =====+===== Graphics ===== 
 +\\ 
 +The statistics details page gives a static preview of the elevation and speed profile. In order to get a fullscreen and dynamic version, click on ''"**Fullscreen**"'' {{:icon_01.png?nolink}}. On the fullsccreen page, you can: 
 +  * Click anywhere on the profile {{:icon_02.png?nolink}} to get the exact values at this location; 
 +  * Click on the ''"**Change X axis**"'' {{:icon_03.png?nolink}} icon to change the abscissa to ''"**Length**"'' or ''"**Time**"''; 
 +  * Click on one of the ''"**Change Y axis**"'' {{:icon_04.png?nolink}} icon to change one of the ordinates. The list of available fields {{:icon_05.png?nolink}} depends on the data included in the track file. 
 + 
 +{{ :en:help:v2:landmarks:statistics-3.jpg?nolink }} 
 + 
 +\\ 
 + 
 +===== How to change statistics settings=====
 \\ \\
 You can change various parameters to control the way statistics are computed. To do so, click on the ''"**Statistics settings**"'' icon {{:icon_01.png?nolink}}. You can change various parameters to control the way statistics are computed. To do so, click on the ''"**Statistics settings**"'' icon {{:icon_01.png?nolink}}.
Line 44: Line 56:
  
 \\ \\
-===== Gain and loss =====+ 
 +===== How to export statistics and graphics data? ===== 
 +\\ 
 +Before computing statistics and displaying graphics of a track, the application will process its raw data (usually recorded using the GPS) based on the chosen settings to remove recording inaccuracies and discrepancies. You can export the processed data in a .CSV file: 
 +  * In the details view of a track, click on the action menu {{:icon_01.png?nolink}}; 
 +  * Select ''"**Export as...**"'' {{:icon_02.png?nolink}}; 
 +  * Choose ''"**CSV file / Profile (Data file)**"'' {{:icon_03.png?nolink}}. 
 + 
 +{{:icon_help.png?nolink}} After the export, you can easily share/upload the generated file using the ''"**Share**"'' button. 
 + 
 +{{ :en:help:v2:landmarks:statistics-4.jpg?nolink }} 
 + 
 +The following fields are exported: 
 +  * ''"**Longitude**"'' and ''"**Latitude**"'', the coordinates of the location buckets in the WGS84 (GPS) datum. A location bucket is a set of one or more locations from the original track, grouped together for algorithmic reasons; 
 +  * ''"**Distance**"'', the cumulative distance from the start point of the buckets, in meter (m); 
 +  * ''"**Time**"'', the cumulative time from the start date of the buckets, in second (s); 
 +  * ''"**Elevation**"'', the mean elevation values computed for the buckets, based on the GPS altitude values, in meter (m), over the EGM96 (Geoid) ellipsoid; 
 +  * ''"**Speed**"'', the mean speed values computed for the buckets, in meters per second (m/s); 
 +  * ''"**Slope**"'', the mean slope values computed for the buckets, in percent (%); 
 +  * ''"**Sea-level pressure**"'', the calibrated, sea-level equivalent mean pressure values computed for the buckets, in hectopascal (hpa); 
 +  * ''"**Pressure**"'', the un-calibrated, raw mean pressure values computed for the buckets, in hectopascal (hpa); 
 +  * ''"**Barometric elevation**"'', the mean elevation values computed for the buckets, based on the pressure values, in meters (m), over the EGM96 (Geoid) ellipsoid; 
 +  * ''"**Accuracy**"'', the mean accuracy (with a 68% confidence) values computed for the buckets, in meter (m); 
 +  * ''"**Elevation (diff.)**"'', the mean difference values between the GPS elevations and the barometric elevations for the buckets, in meter (m); 
 + 
 +\\ 
 +===== Gain and loss computation =====
 \\ \\
 The gain is an important value that helps to appreciate the overall profile of a track. A small gain means that the track is mostly flat, a high gain means you'll have to climb a lot. The gain is an important value that helps to appreciate the overall profile of a track. A small gain means that the track is mostly flat, a high gain means you'll have to climb a lot.
Line 60: Line 98:
 At then end, the "perfect" gain definition would be something between these two ones. In order to compute the best gain approximation, the application will first remove noises from the track (including the GPS inaccuracy) to create a smoother altitude profile, and then compute the gain based on each location altitudes. At then end, the "perfect" gain definition would be something between these two ones. In order to compute the best gain approximation, the application will first remove noises from the track (including the GPS inaccuracy) to create a smoother altitude profile, and then compute the gain based on each location altitudes.
  
-{{:icon_help.png?nolink}} You can disable or increase the default noise reduction. In the statistics settings section, click on the ''"**Edit**"'' button {{:icon_01.png?nolink}}, and change the ''"**Noise reduction**"'' setting {{:icon_02.png?nolink}}. +{{:icon_help.png?nolink}} You can disable or increase the noise reduction amount in the statistics settings (see above).
- +
-{{ :en:help:1.4:landmarks:statistics:settings.jpg?nolink }}+
  
 Here is the effect of the noise reduction on a track profile and gain computation: Here is the effect of the noise reduction on a track profile and gain computation:
  
-  * On the left, the noise reduction is disabled. The profile displays the unmodified jagged and spiky altitudes {{:icon_02.png?nolink}} (mostly due to the GPS inaccuracies), resulting in a high gain value {{:icon_02.png?nolink}} (+2535m);+  * On the left, the noise reduction is disabled. The profile displays the unmodified jagged and spiky altitudes {{:icon_01.png?nolink}} (mostly due to the GPS inaccuracies), resulting in a high gain value {{:icon_02.png?nolink}} (+2535m);
   * In the middle, the noise reduction is on ''"**medium**"'', which is the default setting. Most noises are removed, resulting in a much smaller and less polluted gain value (+1717m);   * In the middle, the noise reduction is on ''"**medium**"'', which is the default setting. Most noises are removed, resulting in a much smaller and less polluted gain value (+1717m);
   * On the right, the noise reduction is on ''"**big**"''. The profile smooth, with minors altitude changes lost, resulting in an even smaller gain value (+1634m).   * On the right, the noise reduction is on ''"**big**"''. The profile smooth, with minors altitude changes lost, resulting in an even smaller gain value (+1634m).
Line 72: Line 108:
 {{:icon_help.png?nolink}} The first gain definition given above, gives an approximate under-estimation value of +1600m for this same track. {{:icon_help.png?nolink}} The first gain definition given above, gives an approximate under-estimation value of +1600m for this same track.
  
-{{ :en:help:1.4:landmarks:statistics:noise-reduction.jpg?nolink }}+{{ :en:help:v2:landmarks:statistics-noise-reduction.jpg?nolink }}