filterByQuality

R2026b

Filter OPC UA data by quality characteristics

Syntax

newObj = filterByQuality(dObj,qualityID)

Description

newObj = filterByQuality(dObj,qualityID) returns the data values from dObj whose quality matches the qualityID.

Examples

Filter OPC UA Data by Quality

Load the OPC UA example data file, extract data of good quality from the uaDataVis object.

load opcSampleUaData;
summary(uaDataVis);

1-by-3 OPC UA Data object:

     Name        Value          Start Timestamp       End Timestamp          Quality      
    ------  ----------------  -------------------  -------------------  ------------------
    Double  9 double values   2015-04-22 09:00:10  2015-04-22 09:01:30  3 unique qualities
    Float   12 single values  2015-04-22 09:00:02  2015-04-22 09:01:30  3 unique qualities
    Int32   12 int32 values   2015-04-22 09:00:02  2015-04-22 09:01:30  3 unique qualities

newD = filterByQuality(uaDataVis,'Good')

newD = 

1-by-3 OPC UA Data object:

     Name        Value          Start Timestamp       End Timestamp                Quality           
    ------  ----------------  -------------------  -------------------  -----------------------------
    Double  7 double values   2015-04-22 09:00:10  2015-04-22 09:01:30  1 unique quality [Good (Raw)]
    Float   10 single values  2015-04-22 09:00:02  2015-04-22 09:01:30  1 unique quality [Good (Raw)]
    Int32   10 int32 values   2015-04-22 09:00:02  2015-04-22 09:01:30  1 unique quality [Good (Raw)]

Input Arguments

dObj — OPC UA data

OPC UA data object array

OPC UA data, specified as an OPC UA data object array. For more information, see Data.

qualityID — Quality of node data

character vector | cell array of character vectors

Quality of OPC UA node data, specified as a character vector or cell array of character vectors. The quality ID can be 'good', 'bad', or 'uncertain'.

Output Arguments

newObj — OPC UA data

OPC UA data object array

OPC UA data, returned as an OPC UA data object array. newObj contains only the data values whose quality matches the specified qualityID.

Version History

Introduced in R2015b