Question

我正在尝试在python中使用matplotlib制作一个三维折线图。数据集来自具有不同传感器的测量站。现在我的代码几乎就像我想要的那样，但每次我尝试运行它都会显示出这个问题：

TypeError：根据规则'safe'

，无法将数组数据从dtype（'float64'）转换为dtype（'S32'）

到目前为止我的代码：

import csv
from mpl_toolkits.mplot3d import axes3d
import matplotlib.pyplot as plt

depth = {
    1 : 11, 2 : 35, 3 : -1, 4 : 11, #position of graphs in cm
}
class SetXYZ:
    def __init__(self, datalist, NameNum): #datalist: list with data, NameNum: number of variable
        self.NameNum = NameNum
        self.datalist = datalist
        self.Name = datalist[0][NameNum]
        self.length = datalist

    def X(self): #Creates list with X Variables
        Xlist = []
        for element in self.datalist:
            Xlist.append(element[0])
        Xlist.pop(0)
        return Xlist

    def Y(self): #Creates list with Y Variables
        Ylist = []
        for element in self.datalist:
            Ylist.append(element[self.NameNum])
        Ylist.pop(0)
        return Ylist

    def Z(self): #list with Z variables
        Zlist = []
        for element in datalist: #Z is the same for every point on one graph
            Zlist.append(depth[self.NameNum-1])
        Zlist.pop(0)
        return Zlist


def csv_to_list(filename): #returns the file as list
    with open(filename, 'rb') as data:
        data = csv.reader(data, delimiter=';')
        datalist = list(data)
        return datalist


filename = "     " #Filename

datalist = csv_to_list(filename)

Graph1 = SetXYZ(datalist, 1)  #creates the graphs
Graph2 = SetXYZ(datalist, 2)

#plots a graph, more or less to test
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

ax.scatter(Graph1.X(), Graph1.Y(), Graph1.Z())

plt.show()

文件如下所示：

时间;传感器1;传感器2;传感器3; sensor4

41940.6791666667; 16; 19.96; 4.1; 11.52

41940.67986; 15.9; 20.51; 4.07; 11.4

41940.67986; 15.9; 20.53; 4.07; 11.41

完整错误如下所示：

Traceback (most recent call last):

  File "C:\Anaconda\lib\site-packages\matplotlib\backends\backend_qt5.py", line 338, in resizeEvent
    self.draw()

  File "C:\Anaconda\lib\site-packages\matplotlib\backends\backend_qt5agg.py", line 148, in draw
    FigureCanvasAgg.draw(self)

  File "C:\Anaconda\lib\site-packages\matplotlib\backends\backend_agg.py", line 461, in draw
    self.figure.draw(self.renderer)

  File "C:\Anaconda\lib\site-packages\matplotlib\artist.py", line 59, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)

  File "C:\Anaconda\lib\site-packages\matplotlib\figure.py", line 1079, in draw
    func(*args)

  File "C:\Anaconda\lib\site-packages\mpl_toolkits\mplot3d\axes3d.py", line 254, in draw
    for col in self.collections]

  File "C:\Anaconda\lib\site-packages\mpl_toolkits\mplot3d\art3d.py", line 413, in do_3d_projection
    vxs, vys, vzs, vis = proj3d.proj_transform_clip(xs, ys, zs, renderer.M)

  File "C:\Anaconda\lib\site-packages\mpl_toolkits\mplot3d\proj3d.py", line 208, in proj_transform_clip

    return proj_transform_vec_clip(vec, M)

  File "C:\Anaconda\lib\site-packages\mpl_toolkits\mplot3d\proj3d.py", line 165, in proj_transform_vec_clip

    vecw = np.dot(M, vec)

TypeError: Cannot cast array data from dtype('float64') to dtype('S32') according to the rule 'safe'

完成后，最多可以有30个传感器，数千次。

是否有解决方法，或者我做错了什么？

感谢您的帮助！

无法转换数组数据... matplotlib和python

0 个答案: