Use \unit for value and uncertainty

Use \unit for value and uncertainty

[Florian Leupold]

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Dear list

Is it possible to use the units module (in MKIV) for value plusminus uncertainty in a way similar to the \SI command in LaTeX, like
  \unit{(1.59\pm2)e-19 coulomb} or
  \unit{1.59(2)e-19 coulomb}?

Thanks and best regards,
Florian

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Re: Use \unit for value and uncertainty

[Florian Leupold]

Hello!

There does not seem to be a simple solution to using \unit with uncertainties, see below.

Could someone maybe point me to the relevant source code for the parser for \unit in MKIV? Then I would try to modify/improve the code myself.

Thanks a lot and best regards,
Florian


> On 25.09.16, at 20:11, Florian Leupold <fleupold@posteo.net> wrote:
> 
> Dear list
> 
> Is it possible to use the units module (in MKIV) for value plusminus uncertainty in a way similar to the \SI command in LaTeX, like
>  \unit{(1.59\pm2)e-19 coulomb} or
>  \unit{1.59(2)e-19 coulomb}?
> 
> Thanks and best regards,
> Florian
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

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___________________________________________________________________________________

Re: Use \unit for value and uncertainty

[Henri Menke]

On 10/31/2016 05:30 PM, Florian Leupold wrote:
> Hello!
> 
> There does not seem to be a simple solution to using \unit with uncertainties, see below.
> 
> Could someone maybe point me to the relevant source code for the parser for \unit in MKIV? Then I would try to modify/improve the code myself.

phys-dim.mkiv
https://github.com/contextgarden/context-mirror/blob/beta/tex/context/base/mkiv/phys-dim.mkiv

phys-dim.lua
https://github.com/contextgarden/context-mirror/blob/beta/tex/context/base/mkiv/phys-dim.lua

> 
> Thanks a lot and best regards,
> Florian
> 
> 
>> On 25.09.16, at 20:11, Florian Leupold <fleupold@posteo.net> wrote:
>>
>> Dear list
>>
>> Is it possible to use the units module (in MKIV) for value plusminus uncertainty in a way similar to the \SI command in LaTeX, like
>>  \unit{(1.59\pm2)e-19 coulomb} or
>>  \unit{1.59(2)e-19 coulomb}?
>>
>> Thanks and best regards,
>> Florian
>> ___________________________________________________________________________________
>> If your question is of interest to others as well, please add an entry to the Wiki!
>>
>> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
>> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
>> archive  : http://foundry.supelec.fr/projects/contextrev/
>> wiki     : http://contextgarden.net
>> ___________________________________________________________________________________
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
> 

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Re: Use \unit for value and uncertainty

[Otared Kavian]

Hi Benjamin,

Thanks for sharing your nice code, which is very useful.
However I wanted to let you know that it seems it does not work correctly with LuaMetaTeX version 2020.04.30 11:10, even though it works fine with ConTeXt mkiv.

Best regards: Otared K.

> On 9 May 2020, at 12:39, Benjamin Buchmuller <benjamin.buchmuller@gmail.com> wrote:
> 
> I know this is quite an old thread, but here is a minimal parser (\units with an “s”) that wraps around \digits and \unit to produce an acceptable output. 
> 
> As I frequently need to write ranges (or measures of uncertainty), I find it convenient to able to type
> 
> \units{4.0 to 5.0 centi meter} 
> 
> than 
> 
> \digits{4.0}\,to\,\unit{5.0 centi meter}.
> 
> Also, the parser will take care of exponents and bracket them accordingly. :D
> 
> ranges: keyword “to”: 4.0 – 5.0 cm
> SEM:    keyword “se”: 4.5 ± 0.5 cm
> SD:     keyword “sd”: 4.5 (0.5) cm
> 
> If no keyword is present, the default behaviour is \unit{…}.
> 
> The code is not perfect (and the level of abstraction potentially not yet sufficient to make it part of the phys-dim.mkiv source), but maybe helpful.
> 
> \starttext
> 
> \startluacode
> 	userdata = userdata or {}
> 	
> 	function userdata.units(input)
> 		
> 		tbl = string.explode(input)
> 		
> 		if tbl[2] == "to" then
> 			context.digits(tbl[1])
> 			context.phys_units_space()
> 			context("--")
> 			context.phys_units_space()
> 			context.unit(table.concat(tbl, " ", 3))
> 		elseif tbl[2] == "se" then
> 			local sx1 = string.split(tbl[1], "e")
> 			local sx2 = string.split(tbl[3], "e")
> 			if (sx1[2] == sx2[2]) and not (sx1[2] == nil) then
> 				context("(")
> 				context.digits(sx1[1])
> 				context.phys_units_space()
> 				context("±")
> 				context.phys_units_space()
> 				context.digits(sx2[1])
> 				context(")")
> 				context.digits("e" .. sx1[2])
> 				context.phys_units_space()
> 				context.unit(table.concat(tbl, " ", 4))
> 			else
> 				context.digits(tbl[1])
> 				context.phys_units_space()
> 				context("±")
> 				context.phys_units_space()
> 				context.unit(table.concat(tbl, " ", 3))
> 			end
> 		elseif tbl[2] == "sd" then
> 			local sx1 = string.split(tbl[1], "e")
> 			local sx2 = string.split(tbl[3], "e")
> 			if (sx1[2] == sx2[2]) and not (sx1[2] == nil) then
> 				context.digits(sx1[1])
> 				context.phys_units_space()
> 				context("(")
> 				context.digits(sx2[1])
> 				context(")")
> 				context.digits("e" .. sx1[2])
> 				context.phys_units_space()
> 				context.unit(table.concat(tbl, " ", 4))
> 			else
> 				context.digits(tbl[1])
> 				context.phys_units_space()
> 				context("(")
> 				context.digits(tbl[3])
> 				context(")")
> 				context.unit(table.concat(tbl, " ", 4))
> 			end
> 		else
> 			context.unit(table.concat(tbl, " "))
> 		end
> 		
> 	end
> \stopluacode
> 
> \def\units#1{\ctxlua{userdata.units("#1")}}
> 
> Car 1 drives \units{4 to 5.2 kilo meter per hour}.
> 
> Car 2 drives \units{30.1 to 40.5 kilo meter per hour}.
> 
> Car 3 drives \units{40.= to 50.= kilo meter per hour}.
> 
> The average speed was \units{35,000 se 5000 meter per hour}.
> 
> The average speed was \units{35e3 se 0.5e3 meter per hour}.
> 
> The average speed was \units{35.2e3 se 5e2 meter per hour}.
> 
> \stoptext
> 
> The average speed was \units{35.2 se 5e2 meter per hour}.
> 
> The average speed was \units{_3.2 sd 5 meter per hour}.
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Use \unit for value and uncertainty

[Benjamin Buchmuller]

I know this is quite an old thread, but here is a minimal parser (\units with an “s”) that wraps around \digits and \unit to produce an acceptable output. 

As I frequently need to write ranges (or measures of uncertainty), I find it convenient to able to type

\units{4.0 to 5.0 centi meter} 

than 

\digits{4.0}\,to\,\unit{5.0 centi meter}.

Also, the parser will take care of exponents and bracket them accordingly. :D

ranges: keyword “to”: 4.0 – 5.0 cm
SEM:    keyword “se”: 4.5 ± 0.5 cm
SD:     keyword “sd”: 4.5 (0.5) cm

If no keyword is present, the default behaviour is \unit{…}.

The code is not perfect (and the level of abstraction potentially not yet sufficient to make it part of the phys-dim.mkiv source), but maybe helpful.

\starttext

\startluacode
	userdata = userdata or {}
	
	function userdata.units(input)
		
		tbl = string.explode(input)
		
		if tbl[2] == "to" then
			context.digits(tbl[1])
			context.phys_units_space()
			context("--")
			context.phys_units_space()
			context.unit(table.concat(tbl, " ", 3))
		elseif tbl[2] == "se" then
			local sx1 = string.split(tbl[1], "e")
			local sx2 = string.split(tbl[3], "e")
			if (sx1[2] == sx2[2]) and not (sx1[2] == nil) then
				context("(")
				context.digits(sx1[1])
				context.phys_units_space()
				context("±")
				context.phys_units_space()
				context.digits(sx2[1])
				context(")")
				context.digits("e" .. sx1[2])
				context.phys_units_space()
				context.unit(table.concat(tbl, " ", 4))
			else
				context.digits(tbl[1])
				context.phys_units_space()
				context("±")
				context.phys_units_space()
				context.unit(table.concat(tbl, " ", 3))
			end
		elseif tbl[2] == "sd" then
			local sx1 = string.split(tbl[1], "e")
			local sx2 = string.split(tbl[3], "e")
			if (sx1[2] == sx2[2]) and not (sx1[2] == nil) then
				context.digits(sx1[1])
				context.phys_units_space()
				context("(")
				context.digits(sx2[1])
				context(")")
				context.digits("e" .. sx1[2])
				context.phys_units_space()
				context.unit(table.concat(tbl, " ", 4))
			else
				context.digits(tbl[1])
				context.phys_units_space()
				context("(")
				context.digits(tbl[3])
				context(")")
				context.unit(table.concat(tbl, " ", 4))
			end
		else
			context.unit(table.concat(tbl, " "))
		end
		
	end
\stopluacode

\def\units#1{\ctxlua{userdata.units("#1")}}

Car 1 drives \units{4 to 5.2 kilo meter per hour}.

Car 2 drives \units{30.1 to 40.5 kilo meter per hour}.

Car 3 drives \units{40.= to 50.= kilo meter per hour}.

The average speed was \units{35,000 se 5000 meter per hour}.

The average speed was \units{35e3 se 0.5e3 meter per hour}.

The average speed was \units{35.2e3 se 5e2 meter per hour}.

\stoptext

The average speed was \units{35.2 se 5e2 meter per hour}.

The average speed was \units{_3.2 sd 5 meter per hour}.
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________