矩阵书的行存储纬度，经度在第2列和第3列以及第6列到第n列存储距离第一列600米以内的点的索引。在下面的代码中，我试图检查第i行中的任何点是否在第j个点的范围内。如果是这样，那么我将追加两行的索引。但在这样做时，我收到错误Error in *tmp*[[j]] : recursive indexing failed at level 2
这是数据集
vehicle_id longt latit date B B B B B B B B B B B B B B B
1 19967 86.2885 23.8210 27 3 1 2 6 0 0 0 0 0 0 0 0 0 0 0
2 19967 86.2891 23.8200 27 2 2 6 0 0 0 0 0 0 0 0 0 0 0 0
3 19967 86.5343 23.8254 27 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0
4 19967 86.7273 23.8200 27 1 4 0 0 0 0 0 0 0 0 0 0 0 0 0
5 19967 86.1362 23.7538 28 1 5 0 0 0 0 0 0 0 0 0 0 0 0 0
6 19967 86.2839 23.8212 28 1 6 0 0 0 0 0 0 0 0 0 0 0 0 0
B B B B B B B B B B B B B
1 0 0 0 0 0 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0 0 0 0 0 0
4 0 0 0 0 0 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0 0 0 0 0 0
6 0 0 0 0 0 0 0 0 0 0 0 0 0
我想知道为什么我会得到这个错误，我怎么能解决它。??? /
S=0
for(i in 1:(nrow(book)-1))
{
if( book[i, 1] != book[i+1,1] )
{
next
}
for(j in i:nrow(book))
{
if( book[i,1]!=book[j,1])
{
break }
if( book[i,1]==book[j,1] & (book[i,5] > 2 ))
{ for( k in 7:(5+book[i,5]))
if(distm (c(book[book[i,k],3], book[book[i,k],2]), c(book[j,3], book[j,2]), fun = distHaversine) < 600)
{ S=book[i,5]+book[j,5]
if (S-k > 0)
{ B<- matrix(0,nrow(book),(S-k))
book <- cbind(book,B)
book[i,5]=book[i,5]+book[j,5]
}
book[i,(6+book[i,5]):((6+book[i,5])+book[j,5])] <- book[j,(6:(5+book[j,5]))]
}
}
}
for( k in 7:(5+book[i,5]))
{ if(i!=book[i,k])
{book[book[i,k],1]=0;
}
}
}
`