What does inrange do in Stata?
That answered by inrange() is whether a specified argument falls in a specified range. We can ask the converse question, of not belonging to or falling outside a list or range, by simply negating the function.
What does != Mean in Stata?
In Stata, these expressions use one or more various relational and logical operators. The operators ==, ~=, != The operators & | ~ and ! are used to indicate “and”, “or”, and “not”. It is a matter of taste whether you use ~ or ! to indicate negation. In this FAQ, we use !.
What is a type mismatch error in Stata?
A type mismatch means that you trying to do something numeric to strings, or vice versa. In your examples, possibly year is a string variable somehow. If so, destring year, replace. On debugging: Stata will stop with an error message as soon as it hits a problem.
What is a continuous variable in Stata?
Although to Stata a variable is a variable, it is helpful to distinguish among three conceptual types: • A continuous variable measures something. Such a variable might measure a person’s age, height, or weight; a city’s population or land area; or a company’s revenues or costs.
What is a Varlist in Stata?
The by varlist: prefix causes Stata to repeat a command for each subset of the data for which the values of the variables in varlist are equal.
Can you use two if statements in Stata?
if statements can be nested. An if statement can optionally be followed by an else statement. (But, the if qualifier does not have a corresponding else part. In Stata, that loop occurs separately for each statement.
What is type mismatch in VBA?
The type mismatch error in Excel VBA occurs when you try to assign a value to a variable that isn’t of the correct type.
What is the basic Stata language syntax?
With few exceptions, the basic Stata language syntax is by varlist: command varlist =exp if exp in range weight, options where square brackets distinguish optional qualifiers and options from required ones. In this diagram, varlist denotes a list of variable names, command denotes a Stata command, exp denotes an algebraic
What if there is no varlist in Stata?
If no varlist appears, these commands assume a varlist of all, the Stata shorthand for indicating all the variables in the dataset. In commands that alter or destroy data, Stata requires that the varlist be specified explicitly. See [U] 11.4 varlists for a complete description.
What is the difference between Egen and anymatch in Stata?
The first statement uses the egen command. Read this as generate the new variable OK that is 1 (true) if id is equal to any of the values specified and 0 otherwise. anymatch () in Stata 9 and later releases is a replacement for eqany () in Stata 8 and prior releases.
What is the difference between SAS and Stata if statements?
Stata is a little bit awkward when using and and or in if statement, compared to SAS. For example: In SAS, we can write if 2001 <= fyear <= 2010. But in Stata, we usually write: if fyear >= 2001 & fyear <= 2010. In fact, Stata provides a handy inrange function. The above if statement can be written as: if inrange (fyear, 2001, 2010).