Data (vuo.data)

Nodes for working with data in ways that are independent of data type (such as storing the most recent data) or that apply to most data types (such as checking if two values are the same).

The Hold Value and Hold List nodes can be used within a feedback loop to do something repeatedly or iteratively. For more information, see the Vuo Manual.

Example compositions:

• Record Camera Drags: Records interactions with a draggable camera and saves them to a file to be played back later. First, run this composition and interact with it by dragging or scrolling the mouse. Your interactions will be recorded while the composition is running. Stop the composition to save the recording to a file. Once you've saved the recording, use the File > Export > Movie… menu item to create a movie (offline rendering) that plays back the recorded interactions.
• Save Word Definition: Fetches a word's definition via RSS, and writes it to a text file on the Desktop.
• Show Bar Chart: Reads a CSV file and displays its contents as a bar chart.
• Store Mouse Position: Draws two dots that follow the mouse pointer. One dot stays with it constantly (purple), and the other only updates once per second (blue).
• Twirl Image Repeatedly: Uses a feedback loop to add more and more twirls to an image over time. Image by Andreas Gücklhorn on Unsplash.

Nodes:

• Append Data (vuo.data.append): Combines the input data items into a single one, in the order they appear in the list.
• Are Equal (Generic) (vuo.data.areEqual): Outputs true if all values are identical.
• Became Greater Than (vuo.data.becameGreaterThan): Outputs an event when A changes to a value greater than B.
• Became Less Than (vuo.data.becameLessThan): Outputs an event when A changes to a value less than B.
• Cut Data (vuo.data.cut): Outputs part of the input data.
• Fetch Data (vuo.data.fetch): Loads or downloads a file from a URL.
• Get Data Bytes (vuo.data.get): Outputs a list containing an integer for each byte in the input data.
• Hold List (vuo.data.hold.list2): When its Update port receives an event, this node outputs its stored list.
• Hold Value (vuo.data.hold2): When its Update port receives an event, this node outputs its stored value.
• Is Greater Than (vuo.data.isGreaterThan): Outputs true if A is greater than B.
• Is Less Than (vuo.data.isLessThan): Outputs true if A is less than B.
• Is Populated (vuo.data.populated): Outputs true if the value is not empty: Type Meaning Audio Samples true if sample count is greater than zero Cursor true if the mouse cursor is populated (takes any visible form) Image true if width and height are greater than zero Layer true if the layer or any of its children can can potentially render graphics Scene Object true if the 3D object or any of its children can can potentially render graphics Shader true if the shader is anything other than the default (blue/purple gradient checkerboard) Text true if the text contains at least one character (including whitespace)
• Make Data from Bytes (vuo.data.make): Creates data consisting of a byte for each value in the input list.
• Record and Play Values (vuo.data.record): Records a series of values to a file and plays them back.
• Save Data (vuo.data.save): Saves data to a file.
• Share List (vuo.data.share.list): Outputs the input list.
• Share Value (vuo.data.share): Outputs the input value.
• Summarize Value (vuo.data.summarize): Outputs a short text description of a value.