Quantities example¶
This example shows quantities functionality.
The code¶
import quantities as pq
from pylatex import Document, Section, Subsection, Math, Quantity
if __name__ == '__main__':
doc = Document()
section = Section('Quantity tests')
subsection = Subsection('Scalars with units')
G = pq.constants.Newtonian_constant_of_gravitation
moon_earth_distance = 384400 * pq.km
moon_mass = 7.34767309e22 * pq.kg
earth_mass = 5.972e24 * pq.kg
moon_earth_force = G * moon_mass * earth_mass / moon_earth_distance**2
q1 = Quantity(moon_earth_force.rescale(pq.newton),
options={'round-precision': 4, 'round-mode': 'figures'})
math = Math(data=['F=', q1])
subsection.append(math)
section.append(subsection)
subsection = Subsection('Scalars without units')
world_population = 7400219037
N = Quantity(world_population, options={'round-precision': 2,
'round-mode': 'figures'},
format_cb="{0:23.17e}".format)
subsection.append(Math(data=['N=', N]))
section.append(subsection)
subsection = Subsection('Scalars with uncertainties')
width = pq.UncertainQuantity(7.0, pq.meter, .4)
length = pq.UncertainQuantity(6.0, pq.meter, .3)
area = Quantity(width * length, options='separate-uncertainty',
format_cb=lambda x: "{0:.1f}".format(float(x)))
subsection.append(Math(data=['A=', area]))
section.append(subsection)
doc.append(section)
doc.generate_pdf('quantities_ex', clean_tex=False)
The generated files¶
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | \documentclass{article}%
\usepackage[T1]{fontenc}%
\usepackage[utf8]{inputenc}%
\usepackage{lmodern}%
\usepackage{textcomp}%
\usepackage{lastpage}%
\usepackage{amsmath}%
\usepackage[separate-uncertainty=true]{siunitx}%
\DeclareSIUnit\rpm{rpm}%
%
%
%
\begin{document}%
\normalsize%
\section{Quantity tests}%
\label{sec:Quantitytests}%
\subsection{Scalars with units}%
\label{subsec:Scalarswithunits}%
\[%
F= \SI[round-precision=4,round-mode=figures]{1.9820166063855052e+20}{\newton}%
\]
%
\subsection{Scalars without units}%
\label{subsec:Scalarswithoutunits}%
\[%
N= \num[round-precision=2,round-mode=figures]{7.40021903700000000e+09}%
\]
%
\subsection{Scalars with uncertainties}%
\label{subsec:Scalarswithuncertainties}%
\[%
A= \SI[separate-uncertainty]{42.0 +- 3.2}{\meter\tothe{2}}%
\]
%
\end{document}
|
quantities_ex.pdf