C++ Based OPC UA Client/Server/PubSub SDK
1.7.9.586
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Defines a physical value relative to a X axis and it is used as the DataType of the Value of XYArrayItemType. More...
#include <opcua_types.h>
Inherited by UaXVTypePrivate [private]
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Public Attributes | |
OpcUa_Double | X |
Position on the X axis of this value. | |
OpcUa_Float | Value |
The value itself. | |
Defines a physical value relative to a X axis and it is used as the DataType of the Value of XYArrayItemType.
Most analysers can produce values that can perfectly be represented with a float IEEE 32 bits, but they can position them on the X axis with an accuracy that requires double IEEE 64 bits. For example, the peak value in an absorbance spectrum where the amplitude of the peak can be represented by a float IEEE 32 bits, but its frequency position required 10 digits which implies the use of a double IEEE 64 bits.