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Scorecard of Max/Min Values with Headers as Max/Min Timestamps


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  • Seeq Team

FAQ: 

I have various conditions that I've created and I am trying to capture the minimum value of a signal during 1 condition and the maximum value of the same signal during another condition. I want these values displayed in a scorecard where the headers are the exact time stamps when the max or min value occurred. 

Solution:

Let's take an example where we have two conditions for when a signal is increasing in value and when a signal is decreasing in value. We want to know the max ROC during the time periods when the signal is increasing, the min ROC when the signal is decreasing and I want them all summarized in a single scorecard metric for "max ROC".

1) Begin with the signals of interest in the display pane and conditions of interest identified. In this case we have a temperature signal, its derivative, and two conditions for when the temperature signal is increasing or decreasing in value. 
image.png

2) We can use Signal from Condition to calculate the maximum ROC during each increasing time period. Make sure to specify that the time stamp of the statistic be placed at the point of max value. This will be important for displaying an accurate time header in our scorecard.image.png

3) Use Signal from Condition again to calculate the min ROC during the decreasing time periods. This time place the time stamp of the statistic at the point of min value. 
image.png

4) Use the CombineWith function in Formula to create a new signal combined of the min and max ROC value signals. 
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5) Use Formula to create a new condition comprised of tiny capsules for each data point in your combined min and max condition. This isimage.png done by doing a value search for when the combined ROC signal has valid data. You will notice that these capsules are so short in length that they do not render in the display pane, but you can see their start and end times, as well as the value of the combined signal during each event in the capsules pane.

6) Now switch to Scorecard view and pull the value of the combined min/max ROC signal into a condition based scorecard during the condition for when that signal has valid data. There is no need to calculate a statistic, as there is only one sample during each of these capsules. Adjust the date headers in the scorecard to display only the start or end time (as they are the same). 
image.png

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