topic Re: Property expression are rounding to 2 decimal places??? in Documentation

Property expression are rounding to 2 decimal places???

gdford — Thu, 14 Oct 2021 21:54:39 GMT

I have the project calculation units set to decimal inches with three decimal places.

When i schedule the length of a beam (Beam Left), I get a LENGTH like this --> 133.247"

I created a custom property expression to convert this LENGTH to a NUMBER.

The expression looks like ---> Beam Left / 1 in

When i schedule this property I get --> 133.25

I do not want 2 decimal places i want three decimal places.

Can i control this, or is this behavior baked into Archicad?

I can think of a work around, but what i have here should work.

Anyone have thoughts on this?

Thanks in advance!!

Re: Property expression are rounding to 2 decimal places???

poco2013 — Thu, 14 Oct 2021 23:19:20 GMT

I believe that when you convert from a length to a number, that it no longer has a unit. So-- under working units set "numbers without units" to three decimals

Re: Property expression are rounding to 2 decimal places???

gdford — Thu, 14 Oct 2021 23:44:39 GMT

ok - I have run a few more test.

When ever i convert a decimal string such as ---> "134.567" into a number

I always end up with 134.58

I am not happy.

Re: Property expression are rounding to 2 decimal places???

poco2013 — Fri, 15 Oct 2021 00:06:21 GMT

using "STRTONUM" and setting working units "Numbers without Units" to 3 decimals I get 134.567. Are you setting units in the right place?

Re: Property expression are rounding to 2 decimal places???

JaseBee — Fri, 15 Oct 2021 00:51:48 GMT

+1 to Gerry's response, that's the only way a property with number data type responds to change of decimals for me too. Shame because it could be set differently for different users which means differing outputs upon publishing...

Re: Property expression are rounding to 2 decimal places???

gdford — Fri, 15 Oct 2021 03:14:46 GMT

STRTONUM is what I was using.

I have not looked at what working units are set to. I never considered that working units would affect a calculation in an expression. I wouldn't expect that the working units setting would be saved as part of the view settings for a schedule, but I have never tested. For the view that opens the schedule I set the dim setting to decimal inch with 3 decimal places. And I set the calculation unit setting to decimal inches to 3 decimal places. Surely working unit settings do not affect property expression calculations.

It will be a bit before I can test this.

Re: Property expression are rounding to 2 decimal places???

JaseBee — Fri, 15 Oct 2021 04:32:31 GMT

Just had a thought, tried it and it worked.

Although the "STRTONUM" rounds to the project unit, if you convert back to a string "STR" you can specify the number of decimals you want and it restores the unrounded number.

Not sure if this helps though as your originally converting from a string... presumably for tallying in a schedule?

Re: Property expression are rounding to 2 decimal places???

gdford — Fri, 15 Oct 2021 09:30:19 GMT

ok - I tested and sure enough Working Units affects Schedules!

.... and as i suspected but don't remember ever testing, Working Units Settings are NOT saved with View Settings.

I have to admit that it seems very flawed that working units should affect the accuracy of schedules! I do seem to remember that I believe working units are saved when project is saved and or project is teamworked.