LaTeX forum ⇒ Graphics, Figures & TablesGraphing Inequalties

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Graphing Inequalties

Postby Mikerada6 » Wed Feb 02, 2011 4:12 pm

How would I create a graph of an inequality in latex? I want to be able to graph a problem such as x>5 or x<=7. If it has two variables such as x-y<9 I can use maple to graph it and then export the image. However maple is unable to graph a simple one variable inequality. Are there any packages that could be used to create a number line and then add the correct information such as open/close circles, shaded the correct side and the appropriate numbers along the bottom?

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Postby Mini » Thu Feb 03, 2011 7:58 am


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Postby ronbannon » Mon May 05, 2014 5:15 pm

I too would like to do this. Ideally, I'd love to enter an interval, including unions of intervals, and have a default number line graph generated. Or, even better, have some way to take a single variable inequality and auto generate a graphical solution. Usually I just generate a pdf graph and then include the image, but that's a lot of work and I am looking for a better way.

Does anyone have an idea how to code this?

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Stefan Kottwitz
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Postby Stefan Kottwitz » Mon May 05, 2014 9:28 pm

I would use TikZ or pgfplots for this. Both can fill the area under a line or a curve, even between given curves. See filling plots for examples, lines or inequalities would even be easier than complex curves.

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