Question

我想创建用于在python中绘制直方图的数据。数据应采用分箱和数值格式例如，输入数据：

a = [10,30,12.5,70,76,90,96,55,44.5,67.8,76,88]

我希望以表格格式输出，例如，
箱数据

我怎么能在python中这样做？

Answer 1

我认为Counter中的课程Collections可能会对您有所帮助。您可以参考pygal动态SVG图表库。

Answer 2

如果您不想使用任何外部模块并自行编码，请使用类似的内容：

import math # You need this to perform extra math function, it is already built in

def histogram(lst): # Defining a function
    rounded_list = [(int(math.ceil(i / 10.0)) * 10) for i in lst] 
    # Rounding every value to the nearest ten

    d = {} # New dictionary

    for v in xrange(min(rounded_list),max(rounded_list)+10,10):
        d[v] = 0
    # Creating a dictionary with every ten value from minimum to maximum

    for v in rounded_list:
            d[v] += 1
    # Counting all the values

    for i in sorted(list(d.keys())):
        print ("\t".join([str(i),str(d[i])]))
    # Printing the output

a = [10,30,12.5,70,76,90,96,55,44.5,67.8,76,88]

#Calling the function
histogram(a)

Python中直方图的数据

2 个答案: