AdamRofer

This was presented at the 02/22/07 LAVA meeting.
Discusses the various aspects of both XNodes and External Nodes, shows comparisons, and shows example usage.
I ended up skipping over two of the "Creating XNodes" pages since Aitor Solar's XNode Manager is a much better place to create your XNodes with.
View the comments page

Copyright © 2006, Adam Rofer
All rights reserved.
Author:
Adam Rofer
--see readme file for contact information
Description:
A couple of Picture datatype hacks to illustrate the structure of the (LV 6.1 - LV 7+ is untested) picture control.
-- Main VIs --
Example - Show How Picture Is Made.vi:
Main example, shows (incrementally) how a specific picture is generated by displaying the picture with each packet
incrementally added. Good way to see how your own pictures display information.
Opcodes.csv:
Comma-delimited file explicitly describing the packet types and their requirements / uses.
Tool - Picture concat.vi:
Given two pictures, concatenates the data to create a single overlapped picture.
Tool - Packets to Picture.vi:
Given an array of picture packets (cluster), generates a picture.
Tool - Picture to Packets.vi:
Given a picture, generates an array of picture packets.
-- Utility subVIs --
sub - 8-Bit string to 32-Bit number.vi:
utility VI to cast a string to a 32-bit number. Typecast might work instead but this is more explicit.
sub - Find Opcode:
Given a picture data string that has the size header removed, this will extract an opcode from the front.
sub - Strip top of and check picture.vi:
Utility VI to strip the header (size) from a picture data string so that it can be scanned for packets.
Change Log:
1.0.1: (11/13/06)
Cleaned up code for LAVA requirements:
- Renamed VIs for clarification of purpose
- Fixed coercion dots
- Added 0ms delays in all loops
- Added error encapsulation in some subvis
- Replaced local variable for cluster to constant in order to limit thread swapping between the user interface and code threads
1.0.0: (11/07/06)
Cleaned up code from 6i 2001 version for submission.