python的scatter中color为什么不能设置每个点的颜色

问题描述

plt.scatter(x=rw.x_value,y=rw.y_value,c=point_number,colormap=plt.cm.Blues,gecolors=’none’,s=15)

其中point_number是指的一系列的点，然后用range（）生成的一个数字列表，并且使用颜色映射，但是在运行的时候，报错ValueError: Invalid RGBA argument: 0用的是python3我想问一下scatter里面的color参数到底如何能够设置每个点

问题解答

下面是文档中对scatter的参数c的说明：c : color, sequence, or sequence of color, optional, default: ‘b’c can be a single color format string, or a sequence of color specifications of length N, or a sequence of N numbers to be mapped to colors using the cmap and norm specified via kwargs (see below). Note that c should not be a single numeric RGB or RGBA sequence because that is indistinguishable from an array of values to be colormapped. c can be a 2-D array in which the rows are RGB or RGBA, however, including the case of a single row to specify the same color for all points.

可见可以传入一个序列（list之类的）