topic Re: Roof slope label in Project data & BIM

Roof slope label

Anonymous — Wed, 18 Dec 2024 00:26:19 GMT

I created a roof slope label with autotext using:
CONCAT ( STR ( TAN ( PITCH ) * 12, 0 ), "/12 - PITCH" )
which works except that for a low slope roof it will not show the fraction, IE 1/2"/12" is shown as 0"/12"

Re: Roof slope label

Peter Baksa — Mon, 08 Feb 2021 18:32:29 GMT

Hi,

This looks like a property expression, which is not GDL, but I guess it is rounding down to 0. I don't know if a property expression can be used to format a number as a dimension, probably not.

In GDL you can use STR{2} to format numbers as dimensions. REQUEST ("Linear_dimension" ...) can be used to get the format string that the user set in the work environment.

Re: Roof slope label

DGSketcher — Mon, 08 Feb 2021 22:09:25 GMT

If you assign the roof pitch using Autotext (#Pitch) in a label does it not display in your required units?
I'm in metric so it may be a regional unit problem.

Re: Roof slope label

Peter Baksa — Tue, 09 Feb 2021 08:01:13 GMT

I played around with it and got a solution.
There is an STRCALCUNIT function that formats a length with the work environment calculation units.
The result of TAN has to be converted from a number to a length: 1 ft * TAN( {Property:Roof/Pitch} )
STRCALCUNIT ( 1 ft * TAN ( {Property:Roof/Pitch} ) ) will give the number you need.

CONCAT ( STRCALCUNIT ( 1 ft * TAN ( {Property:Roof/Pitch} ) ); "/12\"" ) is the concatenated expression, \" is needed to write an " inside a string. It renders a different character on the UI, but works.

Re: Roof slope label

reidweber — Tue, 14 Feb 2023 17:05:54 GMT

This is giving me a Syntax Error. When I jump to the last valid character, it's right after CONCAT

Re: Roof slope label

lparke — Fri, 02 Jun 2023 20:47:56 GMT

I'm having similar syntax error as reidweber. Hoping to open the thread again to find a solution. Rather than /12 I would like to put /1'-0" at the end of the expression. Would that be .... /1\'\-\0\"")

Re: Roof slope label

cmb — Sat, 03 Aug 2024 18:04:26 GMT

The error at CONCAT is your local language setting of your system. You need to put a comma in the list of elements being operated on by the CONCAT. The person posting CONCAT ( STRCALCUNIT ( 1 ft * TAN ( {Property:Roof/Pitch} ) ); "/12\"" ) is somewhere where they use a semicolon.

Re: Roof slope label

cmb — Sun, 04 Aug 2024 20:07:58 GMT

Here's an expression that will yield a label that looks like 3/4"/12". One issue that comes up if you have calculation units set to feet and inches is that the label will throw up a value like 0'-3/4", which isn't kosher.

The 0'- gets replaced with a null ("").

REPLACE ( CONCAT ( STRCALCUNIT ( 12 in * TAN ( {Property:Roof/Pitch} ) ), "/12\"" ), 1, 3, "" )