Help Recreating Equation Format

Question

I am writting my thesis and really like to be able to make some equations like the one shown in the picture but don't know how. Your help is really appreciated.

Image taken from : https://towardsdatascience.com/particle-swarm-optimization-visually-explained-46289eeb2e14

Welcome! Can you provide a minimal working example demonstrating what you can do? This should start with \documentclass{} and end \end{document}. You can look at tikzmarks, for example, for the shading. — cfr, Mar 04 '24 at 05:01
You can also look at tcolorbox. See: https://tex.stackexchange.com/questions/122945/coloured-shadowed-boxes-around-equations — jlab, Mar 04 '24 at 12:05
(and please don't set whole words in mah mode, e.g. this messes up the kerning and spaces are missing) — samcarter_is_at_topanswers.xyz, Mar 04 '24 at 12:46

score 5 · Accepted Answer · answered Mar 04 '24 at 12:43

5

Here is my attempt with tikz:

\documentclass[12pt]{article}
\usepackage{tikz}
\usetikzlibrary{shapes}
\usepackage{amsmath}
\tikzset{mystyle/.style={minimum height=2cm,rounded corners=3mm,anchor=base,
label={[anchor=south]south:{\scriptsize\bfseries\textsf{#1}}}}}
\begin{document}
\[
\begin{aligned}
P_i^{t+1} &= P_i^t+V_i^{t+1}\\
V_i^{t+1} &=
\tikz[baseline]{
    \node[fill=gray!20,mystyle=Inertia\strut] (t1)
    {$w V_i^t$}} + 
\tikz[baseline]{
    \node[fill=magenta!20,mystyle=Cognitive(Personal)] (t2)
    {$c_1 r_1\left(P_{best(i)}^t - P_i^t\right)$}} + 
\tikz[baseline]{
    \node[fill=teal!20,mystyle=Social(Global)] (t3)
    {$c_2 r_2\left(P_{bestglobal}^t-P_i^t\right)$}}
\end{aligned}
\]
\end{document}

answered Mar 04 '24 at 12:43

Andrey L.

1,794

Wow, perfect! Let me say thank you very much! – Oscar Alejandro Arcila Giraldo Mar 04 '24 at 14:17
1

@Andrey L. For vertical alignment of labels, I suggest putting \strut, not only for Inertia but in the command after \textsf{#1} – pascal974 Mar 05 '24 at 12:39
@pascal974, thanks, that's a good point. – Andrey L. Mar 05 '24 at 13:09

Help Recreating Equation Format

1 Answers1