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Offline ElSid  
#1 Posted : 02 November 2012 00:07:38(UTC)
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In MathCAD, the evaluation toolbar has custom in/post/pre/treefix operators. Of particular interest to me at this moment is the postfix operator ([Ctrl][Shift]X in MathCAD). I need to define Decibels (dB ) which is a scale and not a proper unit.

Thank you

Edited by user 13 April 2018 00:03:37(UTC)  | Reason: Not specified

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Offline kilele  
#2 Posted : 03 November 2012 00:08:51(UTC)
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interesting, this is what you are referring to:
http://goo.gl/QvBBm
and this is an implementation of decibels in mathcad :
http://goo.gl/JWeKD
Offline ElSid  
#3 Posted : 07 November 2012 03:42:31(UTC)
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Yes. Interesting, Valery never showed me that was of doing decibles in MathCAD. Tom Gutmann showed me how to properly create a "new" unit name with the postfix operator, and there is another thread for electrical

Edited by user 07 November 2012 03:57:40(UTC)  | Reason: Not specified

Offline ElSid  
#4 Posted : 08 April 2018 16:59:01(UTC)
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SS-3532
I can think of a few scale units...
dB, pH, psia/psig
psia/psig is currently intriging for me because the scaling factor is calculated from a function. Considering SMath works in absolute scales, psi should be renamed psia or psi(a). In the one comversation i could find on this topic, https://en.smath.info/fo...ssible-improvement.aspx, Randovan's example is that pressure conversion scale is @ 14.7 psi. This is not always the case. I'm looking at a problem concerning compressed air in Denver where the conversion scale is 12.3. My function works correctly but is based off of elevation and I cannot properly define the unit. I'll post my example when I get to a computer

Posting sheet that was used in the bug report
Originally Posted by: ElSid Go to Quoted Post
BUG.smz (4kb) downloaded 32 time(s).

Edited by moderator 09 April 2018 01:03:51(UTC)  | Reason: added BTS ID

Offline ElSid  
#5 Posted : 12 April 2018 20:30:30(UTC)
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Will the CTRL+K allow us to define the scale of dB? Inspired from
Originally Posted by: Davide Carpi Go to Quoted Post
However, yes, can be done even this (CTRL+K to add the backslash)

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