无法在Ipython控制台中调用'numpy.ndarray'对象

Question

我试图通过将数据从excel加载到pandas数据帧中后进行简单插值来计算cpmx，hmx，smpx，tmpx和smvx。

当使用cpmx=absmatdata(1,0,0,0,44.011,100)调用函数时，我看到：

'numpy.ndarray'对象不可调用

任何想法如何去做？

这是我的代码：

import numpy as np
import pandas as pd

def absmatdata(a,b,c,d,material,tmp_ref):
    material_map = {2.016: 'H2', 28.016: 'N2', 32.000: 'O2', 32.065: 'S',
                18.016: 'H2O', 64.065: 'SO2', 12.001: 'C Graphite', 
                28.011: 'CO', 44.011: 'CO2', 16.043: 'CH4', 30.070: 'C2H6',
                44.097: 'C3H8', 58.124: 'C4H10'}
    if material in material_map:
        df = pd.read_excel('F:\MAschinenbau\Bachelorarbeit\ABSMAT.xlsx',sheet_name=material_map[material])        
    else:
        print('No data for this material available')    
        df = [list(np.arange(0,1100,100)),list(np.arange(0,11,1)),list(np.arange(0,11,1)),list(np.arange(0,11,1)),list(np.arange(0,11,1))]
    tmp = df.values[:,0]
    cpm = df.values[:,1]
    hm = df.values[:,2]
    smp = df.values[:,3]
    smv = df.values[:,4]
    tn = np.size(df)
    tmp0 = tmp_ref
    tmpx = a
    cpmx = 0
    hmx = b
    smpx = c
    smvx = d
    if a==0 and b==0 and c==0 and d==0:
        print('All values are zero')
    elif a!=0 and b==0 and c==0 and d==0:
        print('T interpolation')
        for i in range(0,tn-1):
            if tmpx > tmp(i) and tmpx <= tmp(i+1):
                int_fak = (tmpx-tmp(i))/(tmp(i+1)-tmp(i))
                cpmx = cpm(i) + int_fak*(cpm(i+1)-cpm(i))
                hmx = hm(i) + int_fak*(hm(i+1)-hm(i))
                smpx = smp(i) + int_fak*(smp(i+1)-smp(i))
                smvx = smv(i) + int_fak*(smv(i+1)-smv(i))
    return tmpx, cpmx, hmx, smpx, smvx

Answer 1

• 您将df设置为DataFrame

• 您设置tmp = df.values [：，0]

• 您在tmp上有numpy.ndarry

• 您必须使用[]而不是()来获取其项目

你的循环部分

 if tmpx > tmp(i) and tmpx <= tmp(i+1):
                 int_fak = (tmpx-tmp(i))/(tmp(i+1)-tmp(i))
                 cpmx = cpm(i) + int_fak*(cpm(i+1)-cpm(i))
                 hmx = hm(i) + int_fak*(hm(i+1)-hm(i))
                 smpx = smp(i) + int_fak*(smp(i+1)-smp(i))
                 smvx = smv(i) + int_fak*(smv(i+1)-smv(i))

应该随着

if tmpx > tmp[i] and tmpx <= tmp[i+1]:
                int_fak = (tmpx-tmp[i])/(tmp[i+1]-tmp[i])
                cpmx = cpm[i] + int_fak*(cpm[i+1]-cpm[i])
                hmx = hm[i] + int_fak*(hm[i+1]-hm(i))
                smpx = smp[i] + int_fak*(smp[i+1]-smp[i])
                smvx = smv[i] + int_fak*(smv[i+1]-smv[i])

另外，您需要将tn更改为

tn = np.size(df.values[:,0])