0003925: Negative numbers with multiple units interpeted as expressions - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0003925	Expressions	Bug	public	2019-04-04 22:47	2022-01-23 00:01

Reporter	metatheorem	Assigned To
Priority	normal	Severity	minor	Reproducibility	always
Status	confirmed	Resolution	open
Product Version	0.18
Target Version	0.20

Summary	0003925: Negative numbers with multiple units interpeted as expressions
Description	When typing in a negative measurement, such as in the Draft Move tool, combinations of units are interpreted as an addition expression. For example, the expression "-1m 10mm" is evaluated to "-990.0 mm" instead of "-1010.0 mm" as it should be. This appears to happen regardless of the units used. Forum disussion here: Negative numbers in feet/inches interpreted wrong
Steps To Reproduce	1. In the Draft workspace, create a two-point rectangle. 2. In any of the point value fields (x, y, or z), type in an expression such as "-1m 10mm". 3. Move keyboard focus away from the field, and the entry changes to "-990.0 mm".
Additional Information	This can happen either when a text entry field loses focus or when a tool is applied. Workarounds: 1. If possible, key in a single type of unit. 2. If not possible, such as when working with feet and inches, perform two operations that add up to the desired measurement. This may not work for all operations. OS: Linux Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.Unknown Build type: Unknown Python version: 2.7.15 Qt version: 4.8.7 Coin version: 3.1.3 OCC version: 6.9.1.oce-0.18 Locale: English/UnitedStates (en_US)
Tags	units

FreeCAD Information

Kunda1 2019-04-24 11:19 administrator ~0013041	In the future, please follow our guidelines (mentioned in the yellow banner at the top of the page) How did you build FreeCAD? Can you please try with a Qt5/Py3/OCC7.3 build? https://github.com/FreeCAD/FreeCAD/releases/tag/0.18.1 or even better try the 0.19_pre https://github.com/FreeCAD/FreeCAD/releases/tag/0.19_pre

Geoplace 2019-04-27 03:46 reporter ~0013059	Hi I've teste the version 18.1 But there is the same behavior. 1.-Draw a line. 2- Change its X end point typing -1m 10mm the result was -990mm instead of the -1010mm OS: Windows 8.1 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.16110 (Git) Build type: Release Branch: (HEAD detached at upstream/releases/FreeCAD-0-18) Hash: f7dccfaa909e5b9da26bf50c4a22ccca9bb10c40 Python version: 3.6.6 Qt version: 5.6.2 Coin version: 4.0.0a OCC version: 7.3.0 Compound units negative values are substracted.PNG (110,230 bytes) Compound units negative values are substracted.PNG (110,230 bytes)

Kunda1 2019-06-13 04:49 administrator ~0013195	Another relevant forum thread: https://forum.freecadweb.org/viewtopic.php?f=3&t=35209

yorik 2022-03-03 13:55 administrator ~0016744	This ticket has been migrated to GitHub as issue 5909.

Date Modified	Username	Field	Change
2019-04-04 22:47	metatheorem	New Issue
2019-04-05 11:18	Kunda1	Relationship added	related to 0003808
2019-04-24 11:19	Kunda1	Status	new => feedback
2019-04-24 11:19	Kunda1	Note Added: 0013041
2019-04-27 03:46	Geoplace	File Added: Compound units negative values are substracted.PNG
2019-04-27 03:46	Geoplace	Note Added: 0013059
2019-06-13 04:49	Kunda1	Note Added: 0013195
2019-06-13 04:50	Kunda1	Project	FreeCAD => Expressions
2019-06-13 04:50	Kunda1	Status	feedback => confirmed
2019-06-13 04:50	Kunda1	Target Version	=> 0.19
2020-02-10 11:00	openBrain	Relationship added	related to 0004263
2021-02-06 06:30	abdullah	Target Version	=> 0.20
2022-01-23 00:01	Kunda1	Tag Attached: units