Package net.simplace.sim.transformers

Klasse DayLengthTransformer

java.lang.Object

net.simplace.sim.io.FWSimIOAdapter

net.simplace.sim.io.resources.FWSimInputAdapter

net.simplace.sim.io.resources.FWSimResourceTransformer

net.simplace.sim.transformers.DayLengthTransformer

Alle implementierten Schnittstellen:

net.simplace.sim.util.FWSimFieldContainer

public class DayLengthTransformer
extends net.simplace.sim.io.resources.FWSimResourceTransformer

Calculates the Daylengths for a given latitude.

Inputs and Outputs

Takes Latitude in degrees as input

Outputs

• DOY
• Daylength in minutes
• Daylength change to previous day in minutes

Formulas

Sine and cosine of latitude, maximal declination.

\[ \begin{eqnarray} rad & = & \frac{\pi}{180}\\ sinlat & = & \sin(rad \cdot latitutde)\\ coslat & = & \cos(rad \cdot latitutde)\\ sindcm & = & \sin(rad \cdot 23.45) \end{eqnarray} \]

Sine and cosine of declination of the sun as function of day of year. Calculation is taken from (G). Some models first calculate \(dec\) as the arcsine of \(sindec\) and then take the sine and cosine. The methods are mathematically equivalent due to \(sin^2+cos^2=1\)

\[ \begin{eqnarray} sindec & = & -sindcm \cos(2 \pi \frac{doy+10}{365})\\ cosdec & = & \sqrt{1-sindec^2}\\ sinld & = & sinlat \cdot sindec\\ cosld & = & coslat \cdot cosdec \end{eqnarray} \]

Daylength calculation.

\[ \begin{eqnarray} arg & = & \min(1,\max(-1,\frac{sinld}{cosld}))\\ daylength & = & 12 (1 + \frac{2}{\pi} \arcsin(arg))\\ \end{eqnarray} \]

Notice

The transformer generates a resource, without transforming an existing one.

References

(G) Goudriaan, Modeling Potential Crop Growth Processes, 1994, (revised version Nov. 2004)

Autor:

Gunther Krauss, Andreas Enders

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	Latitude	Latitude value	DOUBLE	°	-90.0	90.0	0.0

Verschachtelte Klassen - Übersicht

Von Klasse geerbte verschachtelte Klassen/Schnittstellen net.simplace.sim.io.FWSimIOAdapter

net.simplace.sim.io.FWSimIOAdapter.FREQUENCE

Feldübersicht

Von Klasse geerbte Felder net.simplace.sim.io.resources.FWSimResourceTransformer

iFieldMap, iIntColumnMap, iLastInputValuesMap, iLastProjectID, iLastUniqueID, iPoolName, iSourceName

Von Klasse geerbte Felder net.simplace.sim.io.resources.FWSimInputAdapter

iJexlScript, iShouldCacheToDB

Von Klasse geerbte Felder net.simplace.sim.io.FWSimIOAdapter

iArrayMode, iFieldcount, iFrequence, iHeaderVariables, iInterface, iJexlRule, iKeyMap, iName, iOrderNumber, iProcessTime, iResourceElement, iSession, iSourceKey

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
DayLengthTransformer()	used for ClassForName
DayLengthTransformer(net.simplace.sim.FWSimSession aSession, Integer aOrderNumber)
DayLengthTransformer(net.simplace.sim.FWSimSession aSession, org.jdom2.Element aResourceElement, Integer aOrderNumber)

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	createVariables()
net.simplace.sim.io.resources.FWSimResourceCache	getData(net.simplace.sim.util.FWSimVarMap aVarMap)	standard method from outside
net.simplace.sim.io.resources.FWSimResourceCache	getData(net.simplace.sim.util.FWSimVarMap aVarMap, net.simplace.sim.io.resources.FWSimResourceCache aResourceCache)	used by test cases
void	updateFields(net.simplace.core.FWObservable aObservable)

Von Klasse geerbte Methoden net.simplace.sim.io.resources.FWSimResourceTransformer

addVariable, createFormFields, createResourceTransformer, createResourceTransformer, createResourceTransformer, createSimTransformer, fillVarMap, getCreateFormXML, getEditFormXML, getSourceResourceCache, getVariable, isUpdated, toDocXML, toXML

Von Klasse geerbte Methoden net.simplace.sim.io.resources.FWSimInputAdapter

getContentType, getInputVariables, getJexlScript, getOutputVariables, getVarMap, isTransformer, shouldCacheToDB, toHTMLTablestring

Von Klasse geerbte Methoden net.simplace.sim.io.FWSimIOAdapter

addProcessTime, checkCondition, createFormFields, finalize, getFieldMap, getFrequence, getHeaderVariables, getHeaderXML, getInterface, getJexlRule, getKeyMap, getName, getOrderNumber, isArrayMode, isConditionCheck, removeVariable, setInterface, setOrderNumber, toString, writeHeaderList

Von Klasse geerbte Methoden java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Konstruktordetails

DayLengthTransformer

public DayLengthTransformer(net.simplace.sim.FWSimSession aSession,
 org.jdom2.Element aResourceElement,
 Integer aOrderNumber)

Parameter:

aSession -

aResourceElement -

aOrderNumber -

DayLengthTransformer

public DayLengthTransformer(net.simplace.sim.FWSimSession aSession,
 Integer aOrderNumber)

Parameter:

aSession -

aOrderNumber -

DayLengthTransformer

public DayLengthTransformer()

used for ClassForName

Methodendetails

createVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> createVariables()

Angegeben von:

createVariables in Schnittstelle net.simplace.sim.util.FWSimFieldContainer

Setzt außer Kraft:

createVariables in Klasse net.simplace.sim.io.FWSimIOAdapter

getData

public net.simplace.sim.io.resources.FWSimResourceCache getData(net.simplace.sim.util.FWSimVarMap aVarMap)
                                                         throws net.simplace.sim.exceptions.MissingSimResourceException

standard method from outside

Angegeben von:

getData in Klasse net.simplace.sim.io.resources.FWSimInputAdapter

Löst aus:

net.simplace.sim.exceptions.MissingSimResourceException

Siehe auch:

• FWSimInputAdapter.getData(net.simplace.sim.util.FWSimVarMap)

getData

public net.simplace.sim.io.resources.FWSimResourceCache getData(net.simplace.sim.util.FWSimVarMap aVarMap,
 net.simplace.sim.io.resources.FWSimResourceCache aResourceCache)
                                                         throws net.simplace.sim.exceptions.MissingSimResourceException

used by test cases

Parameter:

aVarMap - variable map

aResourceCache - Cached resources (soil data)

Gibt zurück:

delivered new data from transformer

Löst aus:

net.simplace.sim.exceptions.MissingSimResourceException

updateFields

public void updateFields(net.simplace.core.FWObservable aObservable)

Angegeben von:

updateFields in Klasse net.simplace.sim.io.resources.FWSimResourceTransformer

Siehe auch:

• FWSimResourceTransformer.updateFields(net.simplace.core.FWObservable)