Graph Utilities

Utilities for working with XY graphs and Intensity graphs in LabVIEW.

• VIs are contained in the class graph_utilities.lvclass
• Many low level VIs are basically wrappers for property nodes to modify, for example, graph labels.
• High level VIs will convert back and forth between Intensity Graphs and XY Graphs. Note: these operate directly on the graph object by reference
• Also functions are provided to take linecuts of an Intensity Graph with a defined width

Installation

Download and install using the VI Package Manager as described here

Getting Started

Video tutorial here

YouTube: 1

Creating a graph reference

• Drop a graph control onto the front panel

• Right click on the graph and choose “Create: Reference”

• Now you have a graph reference

Call “Write Intensity Graph.vi” and “Write XY Graph.vi” to put the graph reference onto the Graph Utilities class wire

• Write Intensity Graph ref.vi: Write control references to the class wire.

  • "Intensity Graph" is the normal target for reading and writing.
  • "Intensity Graph (Control)" is only used to read the cursor position of the "Control" Intensity Graph.

• Write XY Graph ref.vi: Write control references to the class wire.

  • "XY Graph" is the normal target for reading and writing.
  • "XY Graph (Control)" is reserved for future use.

Usage

/Intensity Graph/

Primitives for working with Intensity Graphs.

• Get/Set Intensity Graph Value.vi
• Get/Set Intensity Graph X Label.vi
• Get/Set Intensity Graph Y Label.vi
• Get/Set Intensity Graph Z Label.vi
• Get/Set Intensity Graph X Scale.vi
• Get/Set Intensity Graph Y Scale.vi
• Set Intensity Graph Z Color.vi
• Get Intensity Graph Cursor (Control).vi
• Set Intensity Graph Cursor.vi

/XY Graph/

Primitives for working with XY Graphs.

• Get/Set XY Graph Value.vi
• Get/Set XY Graph X Label.vi
• Get/Set XY Graph Y Label.vi
• Get/Set XY Graph X Mapping.vi
• Get/Set XY Graph Y Mapping.vi
• Get/Set XY Graph Plot Names.vi
• Set XY Graph Plot Colors.vi
• Offset XY graph.vi

/API/

Basically Macros. For example:

• Convert an XY Graph into a an Intensity Graph. And vice versa.
• Also easily take vertical and horzontal linecuts (with width!) of an Intensity Graph.

• Intensity Graph Linecut (Horizontal).vi
• Intensity Graph Linecut (Vertical).vi
• Intensity Graph to XY Graph (Horizontal).vi
• Intensity Graph to XY Graph (Vertical).vi
• XY Graph to Intensity Graph.vi

/subVIs/

• Array to Offset and Multiplier.vi
• Create Color Table.vi
• Normalized Gaussian.vi
• Offset and Multiplier to Array.vi
• Variant to 2D Array.vi
• Variant to XY-Data.vi

Examples

• Intensity Graph to XY Graph Example.vi: Stand alone VI for converting an Intensity Graph in XY plots. Converts both horizontally and vertically.
• Linecut Example.vi: Stand alone VI for taking linecuts of an Intensity Graph. This VI uses one Intensity Graph as a cursor control and another Intensity Graph as a cursor target

Contributing

Please contact Patrick Irvin

License

BSD-3