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
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)
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