update graph

[sdkpark]

attached is a sample labview code of the problem i'm having. i need my XY graph to update at each point but you can see  that it would only update after the first for loop is done. I'm aware that the XY graph can be put inside the inner for loop but then that would only show the portion of the entire graph. any help is appreciated! thanks in advance!

(it seems the image gets truncated when i try posting. please look at the attached VI.)

[altenbach · Accepted solution]

Well, don't initilize the inner shift register with every iteration of the outer loop, but tap into the outer shift register. Here's a quick example (LV10):

[johnsold]

What are you actually trying to do? Do you have a flow chart or algorithm expaining what should be in the output arrays and graph?

Using Build Array inside a loop is generally not a good idea as it can cause frequent memory reallocations and a big performance hit, if not crashes when the arrays get large.

I suspect that this can be done in one loop.

Lynn

[sdkpark]

well i basically have to scan a motor in three different sections and all of them at different speeds. please let me know if there is a more efficient way. i will look into the previous post. thanks in advance!

[sdkpark]

altenbach,

thanks this is exactly what i need! thanks for your help.

this method works for now and perhaps there can be a more efficient method

[JÞB]

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@sdkpark wrote:

altenbach,

thanks this is exactly what i need! thanks for your help.

this method works for now and perhaps there can be a more efficient method

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not likely!

Altenbach has a history of providing the most effecient solutions-

Spoiler

I'm not even going to look-  I've been embarassed that way before