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Data Manipulation and Display

Use HDA data objects to format and convert OPC HDA data and its display

Functions

single Convert OPC HDA Data object array to single type matrix
double Convert OPC HDA data object array to double type matrix
int8 Convert OPC HDA data object array to int8 matrix
int16 Convert OPC HDA data object array to int16 matrix
int32 Convert OPC HDA data object array to int32 matrix
int64 Convert OPC HDA data object array to int64 matrix
uint8 Convert OPC HDA data object array to uint8 matrix
uint16 Convert OPC HDA data object array to uint16 matrix
uint32 Convert OPC HDA data object array to uint32 matrix
uint64 Convert OPC HDA data object array to uint64 matrix
logical Convert OPC HDA data object array to logical matrix
tsintersect Intersection of time stamp in OPC HDA data object
tsunion Union of time stamps in an OPC HDA data object
arrayHasSameTimeStamp True if all elements of OPC HDA data object have same time stamp vector
getIndexFromID Indices matching OPC HDA data item IDs
resample Resample OPC HDA data object to have defined time stamps
opc.setDateDisplayFormat Set format for date display of OPC objects
opc.getDateDisplayFormat Format for date display of OPC objects
showValues Display table of values for OPC HDA data object
stairs Plot OPC HDA data object as stairstep graph
plot Plot OPC HDA data object as lines
opc.daQualityString OPC data access part of quality ID
opc.hdaQualityString OPC historical data access part of quality ID

Topics

Introduction to OPC HDA Data Objects

All data returned from OPC HDA servers can be stored in MATLAB® as an OPC HDA data object.

Display Data Objects

OPC HDA data read operations can produce a large amount of data returned to MATLAB.

Manipulate Data Using OPC Toolbox HDA Objects

OPC HDA data objects provide initial data storage, visualization, and manipulation functions for you to work with OPC historical data in MATLAB.

Retrieve Large Historical Data Sets

Retrieve very large data sets from OPC historical data access servers.

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