Sample Table

The Sample Table symbol is designed to display a comprehensive list of recorded values from a data archive. It can be configured to show either precise recorded data or interpolated data, offering flexibility in how historical information is presented. This versatility is particularly beneficial for analyzing trends, reviewing past data, and making informed decisions based on accurate and reliable records. Users can easily switch between recorded and interpolated views to gain deeper insights into data patterns and variations over time, enhancing their ability to track performance and identify significant changes.

Starting the Control

To start the control click on the “Assets” button in the upper left corner of the PI Vision display.

In the upper part select “weruSampleTable” by clicking on it.

Afterwards the desired attribute from the asset tree or a PI tag could be added to the display via drag and drop.

Add additional Attributes

When the symbol is already present on the display, it is possible to add more attributes/tags by dragging and dropping them on the symbol.

Configuration

For the Signal Retrieval, three options exist: Compressed data, Sampled data and Interpolated data:

Compressed Data: The Compressed Data mode retrieves and displays real values directly from the data archive. This mode ensures that the data shown is authentic and unaltered, providing an accurate reflection of the recorded information. Users can set boundaries to "inside," "outside," or "interpolated" to control how data points are managed at the edges of the selected range, allowing for precise data retrieval tailored to specific analysis needs.

Sampled Data: The Sampled Data mode displays interpolated values at fixed intervals, determined by the interpolation time parameter set in the configuration. This method simplifies the data by showing consistent, evenly spaced data points, making it easier to identify trends and patterns over time. It is particularly useful when a uniform overview of the data is required without the noise of irregular data entries.

Interpolated Data: The Interpolated Data mode fetches compressed data from the archive and fills in any gaps with interpolated values at given timestamps where no data exists. This mode provides a continuous, smooth representation of the data, ensuring that the displayed information is comprehensive and complete. It is ideal for scenarios where understanding the progression between recorded values is crucial, offering a detailed and seamless view of the dataset.

Time Zone settings allow the user to control whether local timestamps or UTC timestamps are used.
Header Color: Sets the color of the header.
Use multicolored cells: Can be enabled to color cells based on different thresholds.
Font Size: Sets the font size in the symbol.

Change the Size of the Control

To change the size of the symbol, the first step is to change into edit mode (Icon in the upper right corner) and in a second step to click on the control. The eight appearing dots around the control can be used to adjust the size.

Removing the Control

Before removing the control it is necessary to switch into edit mode (Icon in the upper right corner). Thereafter it is possible to click on the control and press the delete key to remove the control.