小编Ari*_*nes的帖子

我遇到了一些程序的问题,我搜索了有关分段错误的内容,我不太了解它们,我唯一知道的是,大概是我试图访问一些我不应该访问的内存.问题是我看到了我的代码并且不明白我做错了什么.

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

#define   lambda   2.0
#define   g        1.0
#define   Lx       100
#define   F0       1.0
#define   Tf       10
#define   h       0.1
#define   e       0.00001

FILE   *file;

double F[1000][1000000];

void Inicio(double D[1000][1000000]) {
int i;
for (i=399; i<600; i++) {
    D[i][0]=F0;
}
}

void Iteration (double A[1000][1000000]) {
long int i,k;
for (i=1; i<1000000; i++) {
    A[0][i]= A[0][i-1] + e/(h*h*h*h)*g*g*(A[2][i-1] - 4.0*A[1][i-1] + 6.0*A[0][i-1]-4.0*A[998][i-1] + A[997][i-1]) + 2.0*g*e/(h*h)*(A[1][i-1] - 2*A[0][i-1] + A[998][i-1]) + e*A[0][i-1]*(lambda-A[0][i-1]*A[0][i-1]);
    A[1][i]= A[1][i-1] + e/(h*h*h*h)*g*g*(A[3][i-1] - 4.0*A[2][i-1] …

今天我正在做一个课程的报告,我需要包括一个字段的等高线图.我用matplotlib做了这个(忽略混乱的标题):

import numpy as np
import matplotlib
from matplotlib import rc
rc('font',**{'family':'sans-serif','sans-serif':['Helvetica']})
## for Palatino and other serif fonts use:
#rc('font',**{'family':'serif','serif':['Palatino']})
rc('text', usetex=True)
from matplotlib.mlab import griddata
import matplotlib.pyplot as plt
import numpy.ma as ma
from numpy.random import uniform
from matplotlib.colors import LogNorm
fig = plt.figure()
data = np.genfromtxt('Isocurvas.txt')
matplotlib.rcParams['xtick.direction'] = 'out'
matplotlib.rcParams['ytick.direction'] = 'out'
rc('text', usetex=True)
rc('font', family='serif')
x = data[:,0]
y = data[:,1]
z = data[:,2]
# define grid.
xi = np.linspace(0.02,1, 100)
yi = np.linspace(0.02,1.3, 100)
# …