Vector with too short arrow

Question

I'm trying to write two vectors like this:

Currently I'm using $\vec{p_e,\SI{10}{\hertz},s2}$ bug ig looks like this:

How can I write it correctly?

That means:

long vector arrow
italic Hz

Why not \vec{p}_{e,\SI{10}{\hertz},s2}? You can use \overrightarrow to get that exact output, but, at least to me, the arrow is too big. — Manuel, Aug 15 '15 at 21:06
Yeah these are quite long but its the only part in my thesis so its ok. How do I get the italic units? — Hedge, Aug 15 '15 at 21:13
The standard says that units should be typeset upright, I don't see a reason to get the italic version (apart from the fact that that's not italic but math normal font, in the first image). — Manuel, Aug 15 '15 at 21:15
(it is part of your profile) honestly: I did not, I am and thus that are the rules I am familiar with. Some conventions differ (see e.g. the shape of the integral sign) — Bort, Aug 15 '15 at 21:36

score 6 · Answer 1 · edited Apr 13 '17 at 12:36

6

As far I have understood the math in the question, the vector is p, the remaining part is just an index to the vector. Therefore, a short vector would be sufficient as shown in the following example. I do not know about e, s2, and d7, but 10 Hz is clearly a number with unit, typeset upright, as already shown in the question and correctly done via \SI{10}{\hertz} with the macro \SI from package siunitx.

\vec{p} is replaced by \vec{{}p} as Manuel has suggested in his comment.

The example:

\documentclass{article}

\usepackage{siunitx}

\begin{document}
  \dots ors $\vec{{}p}_{e,\SI{10}{\hertz},s2}$
  respectively $\vec{{}p}_{e,\SI{10}{\hertz},d7}$
\end{document}

edited Apr 13 '17 at 12:36

Community

1

answered Aug 15 '15 at 21:32

Heiko Oberdiek

271,626

This is a place where \vec{\kern0pt p} or \vec{{}p} is beneficial, in my opinion. – Manuel Aug 16 '15 at 15:57
@Manuel Thanks, it indeed looks better. Answer updated. – Heiko Oberdiek Aug 16 '15 at 16:03

Bernard · Answer 2 · 2019-12-26T09:51:09.343

You might want to give a try to the esvect package, which has 8 nice arrow shapes, longer than the arrow that comes with vec. The base command is \vv, and there is a \vv* command for vectors with indices, in order to have a correct spacing between vector and index:

\documentclass{article}

\usepackage{siunitx}
\usepackage[e]{esvect}

\begin{document}

  \dots ors $\vv*{p}{e,\SI{10}{\hertz},s2}$
  respectively $\vv*{p}{e,\SI{10}{\hertz},d7}$

\end{document}

score 1 · Answer 3 · edited Mar 30 '23 at 10:15

1

You can use \overrightarrow, it looks like $\overrightarrow{p_{e,\SI{10}{\hertz},d7}}$

edited Mar 30 '23 at 10:15

cabohah

11,455

answered Mar 30 '23 at 08:51

Du Xin

11

score 1 · Answer 4 · answered Mar 30 '23 at 19:22

Using old-arrows package with arrows very closer to the initial image.

\documentclass[12pt]{article}
\usepackage{amsmath,amssymb}
\usepackage{old-arrows}
\begin{document}
$\overrightarrow{ p_{\scriptstyle e,10 Hz,s2}}$ respectively $\overrightarrow{ p_{\scriptstyle e,10 Hz,d7}}$
\end{document}

Vector with too short arrow

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