Duratech DA05 WinCE Instrukcja Użytkownika Pobierz pdf (Strona 26)

UniversitàdegliStudidiCatania

IntroductiontoNILabVIEW

 LabVIEWG‐Language:Clusters

Likeanarray,acluster isadatastructurethatgroupsdata.However,unlikeanarray,aclustercan

groupdataofdifferenttypes(i.e.,numeric,Boolean,etc.);itisanalogoustoastruct inCorthedata

membersofaclassinC++orJava.

Becauseaclusterhasonlyone"wire"intheblock

diagramclustersreducewireclutterandthe

numberofconnectorterminalsthatsubVIs need

 Youcanaccessclusterelementsbyunbundlingthemallatonceorbyindexingoneatatime,

dependingonthefunctionyouchoose;eachmethodhasitsplace

 Unlikearrays,whichcanchangesizedynamically,clustershaveafixedsize,orafixednumberof

wiresinthem.

 Youcanconnectclusterterminalswithawireonlyiftheyhaveexactlythesametype;inother

words,bothclustersmusthavethesamenumberofelements,andcorrespondingelementsmust

matchinbothdatatypeandorder.

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