Question

i am a starter in R, probably this is a very foolish question but please help.
x =c(rnorm(100))
y = c(rnorm(100)) ## for the graph
plot(x,col = "blue")
par(new=True) ## to superimpose the new graph on the previous
plot(y,col = "red")
why does this give an error as

par（new = True）错误：object＆＃39; True＆＃39;找不到

Answer 1

如果您想在现有情节的基础上添加情节，请使用lines功能：

TEST(xxxx) {
  string s = generate_some_string();
  string filename = "tmp.txt";
  ofstream tmpFile(filename);
  tmpFile << s;
  tmpFile.close();
  cv::VideoCapture cap(filename);
  // read the content back using cap, and do some check
  remove(filename.c_str());
}

Answer 2

“在所有CAPS TRUE中输入true” par（new = True）##错误 par（new = TRUE）##正确

par中的错误，找不到对象true

2 个答案: