R中的螺旋图(Spiral Graph in R)

 
 
 为什么这张地图3的大小？ 
 
 
 线条 
 
   iss.str(line);
   iss >> word;
   word = fn1(word);
   mp[word] += 1;
 
 只抓住一行的第一个单词并将其添加到地图中。 如果查看文本文件的第一个单词，则只有三个唯一单词。 
 
 
 
 我以为它会是14，计算文本文件中的每个单词。 
 
 
 尝试这个： 
 
int main () {
   map<string, long> mp;
   string line, word;
   ifstream f_in("text.txt");
   while (getline(f_in, line)){

      // Construct this object inside the loop.
      // You don't need it outside this loop.
      istringstream iss(line);
      while ( iss >> word )
      {
         word = fn1(word);
         mp[word] += 1;
      }
   }
   std::cout << mp.size() << std::endl;
   return 0;
}

 
 
Why is the size of this map 3?
 
 
The lines
 
   iss.str(line);
   iss >> word;
   word = fn1(word);
   mp[word] += 1;
 
only grab the first word of a line and add it to the map. If you look at the first words of the text file, you only have three unique words.
 
 
 
I thought it would be 14, counting every word in the text file.
 
 
Try this:
 
int main () {
   map<string, long> mp;
   string line, word;
   ifstream f_in("text.txt");
   while (getline(f_in, line)){

      // Construct this object inside the loop.
      // You don't need it outside this loop.
      istringstream iss(line);
      while ( iss >> word )
      {
         word = fn1(word);
         mp[word] += 1;
      }
   }
   std::cout << mp.size() << std::endl;
   return 0;
}