Round up to nearest decimal point

[LHX]

Hi,

I want to round up the previous phase values in my VI which is in a 2D array to the nearest 5 decimal point. After rounding up, i want to compare the rounded up values against the phase column so that I can get the value which is equal to or nearest to the values in the phase column to get my grey level value and show the grey level in a 2d array (50x50).

How do I go about doing it?

[GerdW]

Hi LHX,

like that:

- Use FOR loops to find corresponding grey levels for each input value.

- Keep in mind: rounding will still be not accurate due to floating point precision!

[moderator1983]

Hi,

I'm not sure, but tried some code around your requirement, please find it in the attachment.

Attached code is saved in version 2009.

[Nghtcrwlr]

you can also round to a defined number of decimal digits like this:

[GerdW]

Hi Nghtcrwlr,

what's the FOR loop good for? 😄

[Nghtcrwlr]

oops... GerdW... sorry.. was trying something else also...

[LHX]

Hi Nightcrwlr,

i've seen a similar VI like yours in the community page before but i don't understand exactly how it works and what is the function connected to the indicator for?

Could you explain it to me in depth?

[GerdW]

Hi LHX,

the icon of that function clearly says "10^x" - you should search the Math palette for it...

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function connected to the indicator for

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That's a Divide function. Pretty basic...

Can't you open the snippets on your computer?

[M_Peeker]

Nghtcrwlr's solution will give you your number decimals.

Run the output of that with your greyscale array into Threshold 1D array.vi in double for loops and then round to nearest and you should be home.

[GerdW]

Hi Peeker,

Thereshold1DArray will not work for unsorted arrays, that's why I suggested to search the minimum deviation...