: Public Class
| Created: |
26/08/2012 1:53:07 PM |
| Modified: |
02/05/2016 12:00:07 AM |
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 Project: |
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| Author: |
braeckel |
| Version: |
1.0 |
| Phase: |
1.0 |
| Status: |
Proposed |
| Complexity: |
Easy |
| Difficulty: |
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| Priority: |
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| Multiplicity: |
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| Advanced: |
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| UUID: |
{B38F16A3-DC3C-4a9d-9877-DA5F7164D95D} |
| Appears In: |
Context Diagram: TAF Forecast, Context Diagram: Surface Wind |
A forecast of wind conditions at an aerodrome. <br/><br/>Wind direction shall be given in degrees from true North. Plane angle unit of measure (uom) is "deg". A true north wind is indicated with a direction of 360. Calm wind is indicated with a direction of 0. Wind speeds and gusts, if present, shall be provided in either two units of measures: "m/s" or "[kn_i]" (knot).<br/><br/>This extends AerodromeSurfaceWindTrendForecast to allow for a variable wind direction to be reported. This class differs from a aerodrome wind observation in that the observations may include a min/max directional variability. This class only carries a true/false indication that it will be variable.<br/><br/><br/>
- Attributes
- Associations From
- Tagged Values
- Constraints
- Other Links
| Attribute |
Public Boolean
variableWindDirection
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Details:
| Alias: |
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| Initial: |
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| Stereotype: |
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| Ordered: |
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| Range: |
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| Transient: |
False |
| Derived: |
False |
| IsID: |
False |
xsdAsAttribute=true
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Notes:
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Indicates variable wind direction. Cannot be reported with a mean wind direction<br/>
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| Tag |
Value |
| byValuePropertyType |
false |
 Details:
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| isCollection |
false |
Details:
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| noPropertyType |
false |
Details:
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| Constraint |
Type |
Status |
| if( variableWindDirection ) meanWindDirection == NULL |
Invariant |
Approved |
Details:
Pattern ID: COMMON.ASWF1<br/>Description: Wind direction is not reported when variable winds are indicated<br/>Assertion: (if( @variableDirection eq 'true' ) then ( empty(iwxxm:meanWindDirection) ) else true())<br/>
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