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OSIsoft: Retrieve compressed data for a tag, Part 1. v4.0

OSIsoft: Retrieve compressed data for a tag, Part 1. v4.0

Let’s move on now to retrieving multiple “Values” at once. Now this is an example right here of retrieving what we’re calling “compressed data.” This is data for the tag CDT158 from Yesterday at 7 to Today at 7. So… Continue Reading

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OSIsoft: Retrieve compressed data for a tag, Part 2. v4.0

OSIsoft: Retrieve compressed data for a tag, Part 2. v4.0

This field right here called “Boundary Type” controls what we do for the “Values” surrounding the start time and the end time. As you can see, it defaults to “Inside.” Now what this means is that the “Value” we first… Continue Reading

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OSIsoft: Retrieve compressed data for a tag, start time – number. v3.1

OSIsoft: Retrieve compressed data for a tag, start time – number. v3.1

In the Compress Data Functions we have Compress Data (Start Time-Number) and Compress Data (Start Time-End Time). The data retrieved by these two functions is the same data. The only difference is the framing. In both instances, you specify a… Continue Reading

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OSIsoft: Describe the different retrieval modes. v4.0

OSIsoft: Describe the different retrieval modes. v4.0

Now in the previous video we ignored this retrieval mode briefly. And the reason we did that is because to really explain this well, we need to go back and look at some fundamentals on how data is stored in… Continue Reading

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OSIsoft: Retrieve compressed data for a tag, start time – end time. v3.1

OSIsoft: Retrieve compressed data for a tag, start time – end time. v3.1

In the Compress Data (start time end time) function, we specify data to retrieve from the archive using a start time and end time. So, I will use my cell references for my tag name and my start time and… Continue Reading

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OSIsoft: Retrieve sampled data for a tag. v4.0

OSIsoft: Retrieve sampled data for a tag. v4.0

Now let’s compare the compressed data we just looked at to sample data. Sample data is coming from the same tags. It’s just we’re slicing through the data at evenly spaced samples, determined by a “Time” interval. So, let me… Continue Reading