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en:help:v2:landmarks:statistics [2016/04/28 11:53]
alpinequest
en:help:v2:landmarks:statistics [2018/02/20 11:53] (current)
alpinequest
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 <​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>​
-====== Statistics ====== 
  
-Display ​the details of a track to get its complete ​details pagemade of+====== Details and statistics ====== 
 +\\ 
 +Statistics are given in the details ​page of landmarks. To display the details page: 
 +  * Tap on a track displayed on the map {{:​icon_01.png?​nolink}} and on its name {{:​icon_02.png?​nolink}} to display available actions; 
 +  * Choose ''"​**Details**"''​ {{:​icon_03.png?​nolink}}. 
 + 
 +{{ :​en:​help:​v2:​landmarks:​details-display.jpg?​nolink }} 
 + 
 +\\ 
 + 
 +===== Statistics ===== 
 +\\ 
 +The details page is made of:
   * A preview section {{:​icon_01.png?​nolink}} (on the default map);   * A preview section {{:​icon_01.png?​nolink}} (on the default map);
   * A complete statistics section {{:​icon_02.png?​nolink}};​   * A complete statistics section {{:​icon_02.png?​nolink}};​
-  * A list of events occurring during the track {{:icon_06.png?​nolink}}.+  * A list of events occurring during the track {{:icon_07.png?​nolink}}.
  
 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_05.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).
  
-Click on ''"​**Events**"''​ {{:​icon_06.png?​nolink}} to display the list of events occurring during the track, as well as their location on the track profile just above. Events include start and end time, locations of minimum and maximum elevations, locations of breaks (along with the rest time for each break), etc.+{{:​icon_help.png?​nolink}} ​Click on ''"​**More**"''​ {{:icon_06.png?​nolink}} to get even more statistic details. 
 + 
 +Click on ''"​**Events**"''​ {{:icon_07.png?​nolink}} to display the list of events occurring during the track, as well as their location on the track profile just above. Events include start and end time, locations of minimum and maximum elevations, locations of breaks (along with the rest time for each break), etc.
  
 {{ :​en:​help:​v2:​landmarks:​statistics-1.jpg?​nolink }} {{ :​en:​help:​v2:​landmarks:​statistics-1.jpg?​nolink }}
  
 +\\
  
-===== Gain and loss =====+===== Graphics ​===== 
 +\\ 
 +The statistics details page gives a static preview of the elevation and speed profile. In order to get a fullscreen and dynamic version, tap on ''"​**Fullscreen**"''​ {{:​icon_01.png?​nolink}}. On the fullscreen page, you can: 
 +  * Tap anywhere on the profile {{:​icon_02.png?​nolink}} to get the exact values at this location; 
 +  * Tap on the ''"​**Set X**"''​ {{:​icon_03.png?​nolink}} icon to change the abscissa to ''"​**Length**"'',​ ''"​**Time**"''​ or ''"​**Time in movement**"'';​ 
 +  * Tap on one of the ''"​**Set Y**"''​ {{:​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-2.jpg?​nolink }}
 +
 +\\
 +
 +===== How to change statistics settings? =====
 +\\
 +You can change various parameters to control the way statistics are computed. To do so, tap on the ''"​**Statistics settings**"''​ {{:​icon_01.png?​nolink}} icon.
 +
 +Parameters you can change are:
 +  * ''"​**Noise reduction**"''​ {{:​icon_02.png?​nolink}} defines how much to filter noises and erroneous values before computing statistics. It mainly impacts the gain computation (see below);
 +  * ''"​**User weight**"''​ {{:​icon_03.png?​nolink}} defines the weight used when computing consumed calories;
 +  * ''"​**Barometric elevation**"''​ {{:​icon_04.png?​nolink}} defines if barometric elevations (if included with the track) must be used instead of GPS elevations to compute statistics;
 +  * ''"​**Include inter-segment gaps**"''​ {{:​icon_05.png?​nolink}} defines if the gaps (elapsed time and distance if any) between segments of the track must be taken into account.
 +
 +You can change more advanced settings by tapping on ''"​**More**"''​ {{:​icon_06.png?​nolink}}:​
 +  * ''"​**Min. break time**"''​ {{:​icon_07.png?​nolink}} defines the minimum rest time a break needs to last to be listed in the events section;
 +  * ''"​**Moving threshold**"''​ {{:​icon_08.png?​nolink}} defines the minimum speed at which you're considered as moving.
 +
 +{{ :​en:​help:​v2:​landmarks:​statistics-3.jpg?​nolink }}
 +
 +\\
 +
 +===== 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, tap on the options menu {{:​icon_01.png?​nolink}};​
 +  * Choose ''"​**Export as...**"''​ {{:​icon_02.png?​nolink}};​
 +  * Choose ''"​**CSV file / Profile (Data file)**"''​ {{:​icon_03.png?​nolink}} (be careful not to choose ''"​**CSV file / Set of waypoints**"''​).
 +
 +{{:​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.
  
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 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).
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 {{:​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 }}

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