Question

#!/usr/bin/env python
import numpy as np
import matplotlib.pyplot as plt
import scipy.interpolate
from matplotlib import colors, ticker, cm
from matplotlib.colors import LogNorm
N = 100 #number of points for plotting/interpolation

y, x, z = np.genfromtxt(r'40Ca_208Pb_39K_Ex_115deg.dat', unpack=True)

xi = np.linspace(x.min(), x.max(), N)
yi = np.linspace(y.min(), y.max(), N)
zi = scipy.interpolate.griddata((x, y), z, (xi[None,:], yi[:,None]), method='linear')

hfont = {'fontname':'Palatino'}

fig = plt.figure(facecolor="white")

zi = np.ma.masked_less(zi, 1e-7) 

plt.contourf(xi, yi, zi,levels=[1e-7,1e-6,1e-5,1e-4,1e-3,1e-2,1e-1],cmap=plt.cm.jet,norm = LogNorm())

plt.xlabel("$E_{x}$")
plt.ylabel("$E/V_{B}$") 
plt.colorbar()
plt.show()

我试图在指针的帮助下打印数组的元素，但它给了我一个错误。请看看上面的代码帮助我？

Answer 1

你需要这样的东西：

#include <stdio.h>
#include <stdlib.h>

int main(void) {
  int a[6] = {1,2,3,4,5,6};
  int *p = a;// storing base address
  printf("%d\n", *p);
  printf("%d\n", *(p + 1));
}

如何通过指针打印数组元素？

1 个答案: