When configuring the properties of a node it is often useful to insert the name of an input field - that is to say, the name of a column of data coming into the node on an input pin. For example, the Transform node allows you to enter expressions which exclude certain fields when the data is output, using the following:
out1 += in1out1 -= in1.fieldname1out1 -= in1.fieldname2
You can simply type the names of fields if you know them. Or, you can choose from the available field names, as follows:
- Click the menu button to the right of the property in the Properties panel.
- Choose Input Fields and then choose from the available fields from across all of the inputs on the node, for example:
Note: Any input nodes must first have been run in order for the Input Fields menu to be populated, otherwise the node is not able to determine which fields are available on the input data.