Manipulation of data DVR - is that correct?

Hello

I'm new to DVR, but trying to integrate them into my current project. My data are in a cluster, and some things I want to change, while others, I want to just use in a calculation or a setting. For items that I don't want change, can I just ungroup them before the in-place-element (REI) where I change what needs to change? Or this will create a copy of the entire cluster of data?

Also, about the antiderivative of exchange values, I use that correctly? I realized that if Exchange you the old value with the new value, then it will be able to put the new value in a memory space of the old value.

Thanks for the pointers you can give me on this topic!

gregoryj wrote:

Right now I'm passing around my data using a FGV. At the end of a test, the data have some great paintings, the size of one can be about 2000 x 20, and I thought it would be more efficient to use digital recorders.

You run into a problem, or you think that the DVR will be "more effective"? A large table takes up the same amount of space whether or not it is encapsulated in a DVR. A DVR serializes access to this table, as does a FGV or a single item queue, and made a normal thread as long as your subVIs that alter this table always pass the entrance through the exit.

gregoryj wrote:

I'm not too familiar with the Swap Values function. Should not be used when the data is stored is not unbundle node?

In this case it worsens your code, unless the compiler optimizes out. The multiplication operation works normally in place on top of entry, if he can. However, with values of your Swap, the code now has a copy of the unedited value, as well, so he can exchange - you forced a copy where none was previously necessary. See the screenshot below showing buffer allocations. The version with the swap requires 4 allowances of buffer, the version without works with only 3. Does not clutter your code with unnecessary functions that you do not really understand.

Tags: NI Software

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