What does the scalar command do in Stata?
scalar define defines the contents of the scalar variable scalar name. The expression may be either a numeric or a string expression. String scalars can hold arbitrarily long strings, even longer than macros, and unlike macros, can also hold binary data.
What is scalar variable in Stata?
Stata scalar variables are different from variables in the dataset. Variables in the dataset are columns. of observations in your data. Stata scalars are named entities that store single numbers or strings, which may include missing values.
How can I access information stored after I run a command in Stata?
After executing a command, you can type return list, ereturn list, or sreturn list to see what has been stored. To view all stored results, including those that are historical or hidden, specify the all option. r(widthmax), r(k max), and r(N max) are historical stored results.
What is scalar command?
Scalar chain is a chain of all supervisors from the top management to the person working in the lowest rank. According to the principle, any information should follow a pre-defined path, which is from the supervisor to the one in lowest position, to avoid any ambiguity.
What does R () do in Stata?
return list lists results stored in r(). ereturn list lists results stored in e().
What does E mean in Stata?
The most common function returned by Stata estimation commands is probably e(sample). This function marks the sample used in estimation of the last analysis, this is useful as datasets often contain missing values resulting in not all cases in the dataset being used in a given analysis.
Should I learn Stata or r?
I would like you to recommend R for data science if you have a basic knowledge of coding or are familiar with the coding environment. On the other hand, if you have some coding knowledge or no coding knowledge, you should choose Stata over R. Because it is quite easy to use and anyone can use it effectively.
What does r () mean in Stata?
Notice that instead of using the actual value of the mean of read in this command, we used the name of the returned result (i.e. r(mean)), Stata knows when it sees r(mean) that we actually mean the value stored in that system variable. This is because Stata uses the r(…) as a placeholder for a real value.
What are examples of scalar principles?
For example, in an organization there are employees A, B, C, D, E, F, G, H, I, at various posts. If employee ‘C’ has to communicate with employee ‘G’ using the scalar chain, the route should be like C4B4A4F4G. Thus there will be four steps for the information to reach from employee ‘C’ to the employee ‘G’.
What is the importance of scalar principle?
The scalar principle means that there should be a clear definition of authority in the organization and that this authority flows, one link at a time, through the chain of command. The line is the simplest organizational structure.
What is the SAVE command in Stata used for?
The save command is used to save the data in memory permanently on disk. Let’s save this data and call it auto2 (Stata will save it as auto2.dta ).
How are scalar variables different from datasets in Stata?
Stata scalar variables are different from variables in the dataset. Variables in the dataset are columns of observations in your data. Stata scalars are named entities that store single numbers or strings, which may include missing values. For instance,
How to save scalars in a loop to a variable?
If you want to save the scalars to new variables, you should use -gen- to create a new variable (all observations are the same constant). Otherwise, you may also use local to store it in a macro. You can post your data using -dataex- and tell the statalisters more about your intention so that others know how to help you.
What happens if I try to use a file in Stata?
If you try to use a file which exceeds the amount of memory Stata has allocated for data, it will give you an error message like this. no room to add more observations r (901); You can increase the amount of memory that Stata has allocated to data using the set memory command.