Can you show me which tools we can use to draw the graphs look like in this book? (see below figure). Sorry, I don't know exactly where I can post this question.
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3Welcome to TeX-sx! Your question has been migrated here as we might be able to help. To do that, though, we'll need to know what software you've got available to you.– Joseph Wright ♦Apr 23, 2015 at 18:34
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@JosephWright: thanks, I've used LaTeX but it's quite complicated for me to draw freely graphs like in above figure. I wonder if there are other apps to do this job?– Anh-Thi DINHApr 24, 2015 at 9:42
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Ah, I have found the below answer from Robert. :)– Anh-Thi DINHApr 24, 2015 at 9:51
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Welcome to TeX.SX. Questions about how to draw specific graphics that just post an image of the desired result are really not reasonable questions to ask on the site. Please post a minimal compilable document showing that you've tried to produce the image and then people will be happy to help you with any specific problems you may have. See minimal working example (MWE) for what needs to go into such a document.– Martin SchröderApr 24, 2015 at 11:33
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1 Answer
You can use several plotting packages, some of them very sophisticated.
My package xpicture is specially designed for mathematical plottings.
Try this code:
\documentclass{standalone}
\usepackage{xpicture}
\begin{document}
\newlpoly{\p}{-5}{3} % Defines y=-5+3x
\renewcommand{\Pictlabelsep}{0.2}
\setlength{\unitlength}{.75cm}
\begin{Picture}(-1.5,-1.5)(6,6)
\cartesianaxes(-1.5,-1.5)(5.5,5.5)
\xVECTOR(5.5,0)(5.6,0)
\xVECTOR(0,5.5)(0,5.6)
\Put[E](5.5,0){$x$}
\Put[N](0,5.5){$y$}
\pictcolor{cyan}
{\thicklines
\PlotFunction{\p}{1.5}{3.25} % Plots p between x=1.5 and x=3.25
\Put(2,1){\circle*{0.2}}
\Put(3,4){\circle*{0.2}}}
\Polyline(2,1)(3,1)(3,4)
\Put[SE](2,1){$\Delta x=1$}
\Put[E](3,2.5){$\Delta y=3$}
\p{3.1}{\x}{\Dx}
\Put[E](3.1,\x){$\leftarrow$ slope 3}
\end{Picture}
\end{document}
