为什么我的Python散点图不能工作？ [英] Why won't my Python scatter plot work?

问题描述

使用pylab创建了一个非常简单的散点图。

I created a very simple scatter plot using pylab.

pylab.scatter(engineSize, fuelMile)
pylab.show()

该程序的其余部分不值得发布，因为它是给出的那条线我是这个问题。当我将散点图更改为绘图时，它会绘制数据图形，但每个点都是线条的一部分，这会使整个事物变得乱七八糟。我只是想要点，而不是一条线，但我得到这个巨大的错误信息，结束于：

The rest of the program isn't worth posting, because it's that line that's giving me the problem. When I change "scatter" to "plot" it graphs the data, but each point is part of a line and that makes the whole things a scribbly mess. I just want points, not a line, but I get this huge error message that ends with:

  File "C:\Python26\lib\site-packages\numpy\core\fromnumeric.py", line 1643, in amin
    return amin(axis, out)
TypeError: cannot perform reduce with flexible type

推荐答案

我打赌engineSize，fuelMile是蜇伤， ，如果是这样的话，你必须将它们转换为float，然后将它们作为参数传递给scatter

I bet engineSize, fuelMile are stings, try printing them, if that is the case, you have to convert them to float before passing them as arguments to scatter

floatval = float(strval)

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