图/绘制一条直线——matplotlib

最新推荐文章于 2025-03-21 23:25:20 发布

woshilsh

最新推荐文章于 2025-03-21 23:25:20 发布

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分类专栏： python编程记录

本文链接：https://blog.youkuaiyun.com/woshilsh/article/details/89494765

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本文是一篇关于如何使用Python的Matplotlib库绘制直线图的教程。内容包括如何绘制斜率为2，截距为1的直线，以及如何将坐标轴置于图形中心。此外，还展示了不同的线型和颜色选择，并提供了绘制多条直线的方法。

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The slope equation $y=mx+c$ as we know it today is attributed to René Descartes (AD 1596-1650), Father of Analytic Geometry.

The equation $y=mx+c$y=mx+c represents a straight line graphically, where $m$m is its slope/gradient and $c$c its intercept. In this tutorial, you will learn how to plot $y=mx+b$y=mx+b in Python with Matplotlib.

Consider the straight line $y=2x+1$y=2x+1 , whose slope/gradient is $2$2 and intercept is $1$1. Before we plot, we need to import NumPy and use its linspace() function to create evenly-spaced points in a given interval. In the below example, linspace(-5,5,100) returns 100 evenly spaced points over the interval [-5,5] and this array of points goes as the first argument of the plot()