Math function: round to xx decimals

rexpeter · 2016-10-14 13:27:38

Is it possible to round a decimal value to the number of digits you would like to have or display?
So instead of reading "25.12345" making a calculation to display one decimal place "25.1" or 3 decimal places "25.123" etc.
The ROUND function does not provide any decimal position, so you would get just "25" and that is not what I would like to have.

Thanks in advance,
Peter

tomáš čechura · 2016-10-14 14:32:06

Hello Peter,

please, can you specify where exactly do you want to round the numbers? Is it just for displaying during online monitoring or display in HMI? Or would you like to "trim" some of the signals directly in Rex and continue to process the rounded values?

Best Regards, Tomas

rexpeter · 2016-10-14 16:23:03

Hi Tomas,

Factually I would like to display it on HMI with just 1 or 2 decimal positions. I prefer to work with accurate numbers in the algorithm, but for the display it would be nice to trim it.

tomáš čechura · 2016-10-14 17:05:36

Hi Peter,

I presume that you are using RexHMI Designer based on Inkscape, am I right?

If so, select the display in RexHMI Designer and press Ctrl+E (or Extensions --> RexHMI --> Edit Element).
Switch to "Options" tab and there is parameter "decimals".

I hope the above is useful to you. Feel free to contact us if you have any other questions.

Cheers, Tomas

rexpeter · 2016-10-14 17:55:11

Hi Tomas?

Honestly said I did not used the Inkscape yet? But the simple WebUibi? Interface. And there is to my opinion no possibility to trim this formatting. Therefore I hope it can be done in the algorithm.
If not, I have to start learning and using RexHMI.

tomáš čechura · 2016-10-14 18:16:14

Peter, sorry for my assumption about the HMI you are using.

In case of WebBuDi you can also use parameter "decimals":

{type:"AW", ... , "decimals":2}

Regards, Tomas

rexpeter · 2016-10-15 14:48:14

Thanks a lot Tomas!

tomáš čechura · 2016-10-17 06:40:44

You are welcome, Peter. Good luck with your project!

Tomas

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#1 2016-10-14 13:27:38