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Charts - Wind charts: Difference between revisions
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The chart is configured with the following parameters (explained in [[Charts#WindRoseNrOfWindforceClasses_.26_WindRoseMaxWindSpeed|the chapter Charts]]): | The chart is configured with the following parameters (explained in [[Charts#WindRoseNrOfWindforceClasses_.26_WindRoseMaxWindSpeed|the chapter Charts]]): | ||
[Graphs] | |||
WindRoseNrOfWindforceClasses=6 (default = 6) | WindRoseNrOfWindforceClasses=6 (default = 6) | ||
WindRoseMaxWindSpeed=60 (default = 60) | WindRoseMaxWindSpeed=60 (default = 60) | ||
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=== Windrun configuration === | === Windrun configuration === | ||
The Windrun is a bit more automated but still the user has to define the class width through the parameter ''WindrunClassWidth'' (which has a default of 75). Again the default is OK for a ''distance unit of km'', reconsider if using imperial. '''Note that if you use a speed unit of m/s, the distance | The Windrun is a bit more automated but still the user has to define the class width through the parameter ''WindrunClassWidth'' (which has a default of 75). Again the default is OK for a ''distance unit of km'', reconsider if using imperial. '''Note that if you use a speed unit of m/s, the distance of the Windrun will be in km'''. | ||
With the ''WindrunClassWidth'' the following is calculated: | With the ''WindrunClassWidth'' the following is calculated: | ||
#The maximum windrun which ever occurred on the station is determined (call it ''MaxWindRun'') | #The maximum windrun which ever occurred on the station is determined (call it ''MaxWindRun'') | ||
#The number of windrun classes is calculated as: <math>\left (\frac{MaxWindRun}{WindrunClassWidth}\ + 1 \right)</math> | #The <math>number of windrun classes</math> is calculated as: <math>\left (\frac{MaxWindRun}{WindrunClassWidth}\ + 1 \right)</math> | ||
#Then all classes are defined as <math>class[ i ] = WindrunClassWidth + i \times WindrunClassWidth</math> | #Then all classes are defined as (Loop over the number of windrun classes as calculated above) <math>class[ i ] = WindrunClassWidth + i \times WindrunClassWidth</math> | ||
These classes are used for the Windrun chart. | |||
=== YADR Report class configuration === | === YADR Report class configuration === | ||
A similar procedure is used for the legend under the YADR Windrun report with the difference that here always 13 classes are used. Reason is that the extreme classes are easier to see in this colour accented text report than it is in the percental Windrun chart. | A similar procedure is used for the legend under the YADR Windrun report with the difference that here always 13 classes are used. Reason is that the extreme classes are easier to see in this colour accented text report than it is in the percental Windrun chart. | ||
