Comments on: I couldn’t live without “Array of VData to VCluster” (video) http://thinkinging.com/2009/02/14/i-couldnt-live-without-array-of-vdata-to-vcluster-video/ an unfiltered stream of data flow consciousness Mon, 19 Jul 2010 06:37:49 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Jim Kring http://thinkinging.com/2009/02/14/i-couldnt-live-without-array-of-vdata-to-vcluster-video/comment-page-1/#comment-25367 Jim Kring Sun, 15 Feb 2009 21:18:54 +0000 http://thinkinging.com/?p=711#comment-25367 Ton: Thanks for the tip. One thing to consider before trying to use this feature is that the backwards type propagation from the indicator terminal into the <strong>Variant to Data</strong> function will not pass through structures. And, since It is a best practice to always wrap subVIs in an error case structure and to put the indicator terminals outside the case structure, there aren't really any practical ways to utilize this feature -- I <em>always</em> use a local variable (or typedef constant) to set the data type of the Variant to Data function. Ton: Thanks for the tip. One thing to consider before trying to use this feature is that the backwards type propagation from the indicator terminal into the Variant to Data function will not pass through structures. And, since It is a best practice to always wrap subVIs in an error case structure and to put the indicator terminals outside the case structure, there aren’t really any practical ways to utilize this feature — I always use a local variable (or typedef constant) to set the data type of the Variant to Data function.

]]> By: Ton Plomp http://thinkinging.com/2009/02/14/i-couldnt-live-without-array-of-vdata-to-vcluster-video/comment-page-1/#comment-25366 Ton Plomp Sun, 15 Feb 2009 20:54:02 +0000 http://thinkinging.com/?p=711#comment-25366 In recent version of LabVIEW you can even do without the local: <a href="http://forums.lavag.org/Array-of-Vdata-to-Vcluster-without-local-image1773.html" rel="nofollow">See on LAVA</a>. Ton In recent version of LabVIEW you can even do without the local:
See on LAVA.

Ton

]]> By: Jim Kring http://thinkinging.com/2009/02/14/i-couldnt-live-without-array-of-vdata-to-vcluster-video/comment-page-1/#comment-25365 Jim Kring Sun, 15 Feb 2009 17:11:28 +0000 http://thinkinging.com/?p=711#comment-25365 I haven't done any profiling of the OpenG <strong>Array of VData to VCluster</strong> function, but I'm sure that the <strong>Array to Cluster</strong> primitive is pretty fast. This operation concatenates the array type descriptors together and concatenates the array element data. If the primitive is used, the type descriptor portion can be done at edit-time and only the array elements data need to be concatenated at run-time. The source code is all there, so if you want to know more, take a look. If you discover anything interesting, feel free to post back your results. :) I haven’t done any profiling of the OpenG Array of VData to VCluster function, but I’m sure that the Array to Cluster primitive is pretty fast. This operation concatenates the array type descriptors together and concatenates the array element data. If the primitive is used, the type descriptor portion can be done at edit-time and only the array elements data need to be concatenated at run-time.

The source code is all there, so if you want to know more, take a look. If you discover anything interesting, feel free to post back your results. :)

]]> By: crelf http://thinkinging.com/2009/02/14/i-couldnt-live-without-array-of-vdata-to-vcluster-video/comment-page-1/#comment-25364 crelf Sun, 15 Feb 2009 02:56:12 +0000 http://thinkinging.com/?p=711#comment-25364 What sort of performance hit (time and/or memory), if any, do we get using the OpenG vCluster VIs over the primatives? What sort of performance hit (time and/or memory), if any, do we get using the OpenG vCluster VIs over the primatives?

]]> By: crelf http://thinkinging.com/2009/02/14/i-couldnt-live-without-array-of-vdata-to-vcluster-video/comment-page-1/#comment-25363 crelf Sun, 15 Feb 2009 02:52:35 +0000 http://thinkinging.com/?p=711#comment-25363 Monkey brid fish! Monkey brid fish!

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