Error: could not find function … in R

Question:

solve:

Full error:

Question:

> mytest.ax(lable,prediction)
Error in mytest.ax(lable, prediction) :
could not find function “mytest.ax”

Solution:

First, is the function name written correctly?R language function names are case sensitive.

Second, is the package containing the function installed?install.packages（“package_name”）

Third,

require（package_name）

library（package）

Require (package_name) (and check its return value) or library (package) (this should be done every time you start a new R session)

Fourth, are you using an old r version that does not yet exist?Or the version of R package; Or after the version is updated, some functions are removed from the original package;

Fifth, functions are added and removed over time, and the referenced code may expect an updated or older version than the package you installed. Or it’s too new. Cran doesn’t contain the latest version;

Full error:

> mytest.ax(lable,prediction)
Error in mytest.ax(lable, prediction) :
could not find function "mytest.ax"