你明白了。您可以1
在数据和0
其他位置指定的任何位置创建列表。列表理解可以很容易地做到这一点
def binary_data(data):
return [1 if x in data else 0 for x in range(data[-1] + 1)]
它将像这样:
>>> data = [1, 2, 4, 5, 9]
>>> bindata = binary_data(data)
>>> bindata
[0, 1, 1, 0, 1, 1, 0, 0, 0, 1]
现在,所有你需要做的就是剧情吧...或者更好的一步它,因为它是二进制数据,step()
看起来更好的方式:
import numpy as np
from matplotlib.pyplot import step, show
def binary_data(data):
return [1 if x in data else 0 for x in range(data[-1] + 1)]
data = [1, 2, 4, 5, 9]
bindata = binary_data(data)
xaxis = np.arange(0, data[-1] + 1)
yaxis = np.array(bindata)
step(xaxis, yaxis)
show()
要绘制堆叠在同一图形上的多个数据数组,可以进行如下调整binary_data()
:
def binary_data(data, yshift=0):
return [yshift+1 if x in data else yshift for x in range(data[-1] + 1)]
因此,现在您可以设置yshift
参数以在y轴上移动数据数组。例如,
>>> data = [1, 2, 4, 5, 9]
>>> bindata1 = binary_data(data)
>>> bindata1
[0, 1, 1, 0, 1, 1, 0, 0, 0, 1]
>>> bindata2 = binary_data(data, 2)
>>> bindata2
[2, 3, 3, 2, 3, 3, 2, 2, 2, 3]
假设您有data1
,data2
然后data3
将其堆叠,您将像:
import numpy as np
from matplotlib.pyplot import step, show
def binary_data(data, yshift=0):
return [yshift+1 if x in data else yshift for x in range(data[-1] + 1)]
data1 = [1, 2, 4, 5, 9]
bindata1 = binary_data(data1)
x1 = np.arange(0, data1[-1] + 1)
y1 = np.array(bindata1)
data2 = [1, 4, 9]
bindata2 = binary_data(data2, 2)
x2 = np.arange(0, data2[-1] + 1)
y2 = np.array(bindata2)
data3 = [1, 2, 8, 9]
bindata3 = binary_data(data3, 4)
x3 = np.arange(0, data3[-1] + 1)
y3 = np.array(bindata3)
step(x1, y1, x2, y2, x3, y3)
show()
您可以轻松地进行编辑以使其与任意数量的数据数组一起使用:
data = [ [1, 2, 4, 5, 9],
[1, 4, 9],
[1, 2, 8, 9] ]
for shift, d in enumerate(data):
bindata = binary_data(d, 2 * shift)
x = np.arange(0, d[-1] + 1)
y = np.array(bindata)
step(x, y)
show()
最后,如果要处理长度不同的数据数组(例如[1,2]
和[15,16]
),并且您不喜欢图形中间消失的图,则可以binary_data()
再次进行调整以将其范围强制为数据的最大范围。
import numpy as np
from matplotlib.pyplot import step, show
def binary_data(data, limit, yshift=0):
return [yshift+1 if x in data else yshift for x in range(limit)]
data = [ [1, 2, 4, 5, 9, 12, 13, 14],
[1, 4, 10, 11, 20, 21, 22],
[1, 2, 3, 4, 15, 16, 17, 18] ]
# find out the longest data to plot
limit = max( [ x[-1] + 1 for x in data] )
x = np.arange(0, limit)
for shift, d in enumerate(data):
bindata = binary_data(d, limit, 2 * shift)
y = np.array(bindata)
step(x, y)
show()
编辑:作为@ImportanceOfBeingErnest建议,如果你喜欢进行data
到bindata
不必定义自己的转换binary_data()
功能,你可以使用numpy.zeros_like()
。堆叠它们时,请多加注意:
import numpy as np
from matplotlib.pyplot import step, show
data = [ [1, 2, 4, 5, 9, 12, 13, 14],
[1, 4, 10, 11, 20, 21, 22],
[1, 2, 3, 4, 15, 16, 17, 18] ]
# find out the longest data to plot
limit = max( [ x[-1] + 1 for x in data] )
x = np.arange(0, limit)
for shift, d in enumerate(data):
y = np.zeros_like(x)
y[d] = 1
# don't forget to shift
y += 2*shift
step(x, y)
show()
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