Chapter 4. Other Windows and Programs

This window gives a real-time view into the DataHub program. You can open this window in either of two ways:

All data domains in the DataHub program are shown in the tree on the left, and all the points of the selected data domain are listed on the right. Clicking on a point name selects it, and puts its name into the Selected Point field at the top of the window. A snapshot of the value of the point at the time you clicked appears in the Enter new value field. You can change the value of the point by entering a new value in this field (i.e. type in the value and press the Enter key). You can also drag the column headers to change the order of the columns.

Point Filter

You can use the Filter option to display subsets of points, according to what you type in the entry field. Checking the Regex box causes the DataHub instance to treat your entry as a regular expression. The native DataHub Properties window interface uses PCRE (Perl-Compatible Regular Expression) format, whose use and syntax can be found here. The Remote Config tool uses .NET regular expression format, whose use and syntax can be found here.

Origin column

The Origin column displays information about the source of the most recent change to the point. This information will be different depending on the type of the source.

The information in this column comes from the Connection Viewer window.

Drag and Drop Style and Property

There are several options for the drag and drop style, depending on the program in which you want to place the data. In addition, there is a Snapshot (Plain Text) option that allows you to put in labels and data properties that don't change.

The Data Browser also provides a way to select the Property of a data point to drag and drop, such as timestamp, quality, and point type.

The following properties are available:

It is possible to copy meta information such as name, value, and a JSON representation from a data point or any level of a branch.

In the Properties window Data Browser you can use the Shift key to select multiple points.

In the Remote Config Data Browser, you can drag the mouse to select multiple points.

The following options are available:

{
  "name":"DataPid:PID1.Pv",
  "leafname":"Pv",
  "value":38.708488241669947,
  "quality":192,
  "timestamp":
    "2024-01-19T18:07:51.228Z"
}

{
  "name":"DataPid:PID1.Pv",
  "leafname":"Pv",
  "modeltype":2,
  "type":"R8",
  "access":"rw"
}

{
  "name":"DataPid:PID1.Pv",
  "leafname":"Pv",
  "subscribers":[
    {
      "label":"",
      "description":"Built-in 
         Data Viewer",
      "user":"",
      "type":"Built-in 
         Data Viewer"
    },
    {
      "label":"127.0.0.1:51924",
      "description":"Incoming 
        plain text (1c9ad7d8) 
        from 127.0.0.1:51924",
      "user":"TCP",
      "host":"127.0.0.1",
      "type":"TCP Incoming"
    }
  ],
  "writers":[
    {
      "label":"127.0.0.1:51924",
      "description":"Incoming 
        plain text (1c9ad7d8)
        from 127.0.0.1:51924",
      "user":"TCP",
      "host":"127.0.0.1",
      "type":"TCP Incoming"
    }
  ]
}

{"name":"DataPid:PID1.Pv",...}
    vs
{"n":"DataPid:PID1.Pv",...}

You can delete points from the Data Browser by right-clicking the point name and selecting Delete point. If you right-click on a branch in the left-hand tree and select Delete point, the branch and all its children will be deleted recursively.

When a point is "deleted" in the Data Browser, it is not really deleted. It is hidden. It behaves as much as possible as if it does not exist, but not entirely. Here's what happens internally: