STATA 11 for Windows SAMPLE SESSION - Food Security Group ...

Stata 11 Sample Session Section 0 – File structure and Basic Operations for Stata 11
Exercise: Exercise: Change the value to 1 in the hh column where hh=2.
Clicking on Yes, will change the value, No will cancel out. If
you switch back to the Stata window, you will see a command
that has been run that replaces the value. Now switch back to
the data editor.
By default the value labels are displayed. To look at the
values, on the table and choose “Hide all Value
Labels”.
Another option available with the is to Manage
Value Labels where a value label can be defined, dropped or
added. We will discuss later value labels when we create new
variables.
A description of all the variables is also available within the
Data editor. Click on Data, Variable Manager. Or click
on the icon . You can see a list of all the variables with the
details for each variable.
Exiting the Data Editor To exit the Data Editor, click on the “x” in the upper right
hand corner of the Data Editor. The window closes.
Saving the Stata Data File
The save, replace command
You will often get a data file, compute new variables, make
transformations, and finally save the modified set of data to a
new name to be used at another time. For example: you might
retrieve a data file with land area per crop, add to it production
per crop from another file, and then calculate yield. If you
want to use the new production and yield variables at a later
time, you must make sure that the data file is saved with the
new variables in it. Never save data that has been modified to
the same file name unless these are permanent changes to be
made to the original data set.
We do not want to save any changes that were made to this
data file. Below are instructions on how to save the file if you
wanted save the data file. You can close the Data Editor or
you can also save the file within the Data Editor.
From the menus select
File, Save As... and enter the name.
From the Command window, you can also type
save “newfilename”
or, if you want to use the same name, type
save, replace
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