Using JMP - SAS

168 Reshape Data Chapter 6
Create a Subset Data Table
Table 6.1 Description of the Subset Window
Subset by
All Rows
Selected Rows
Random - sampling rate
Random - sample size
All columns
Selected columns
Output table name
Link to original data table
Copy formula
Suppress formula evaluation
Keep dialog open
To subset by the levels of a column, select Subset by and select the
columns that you want to categorize for the subset.
Consider the fact that many new data tables might be created. A new
data table appears for each level of the column that you specified in
the Subset window.
Creates a subset table that contains all rows from the active table.
Creates a subset table that contains only the selected rows from the
active table.
Creates a subset table whose data is a random proportion of the active
data table. Enter the proportion of the sample that you want in the
text box. For example, if you want a random 50% of the data to be
included in the new table, enter 0.5 in the text box.
Creates a subset table whose data is a random sample of the active data
table. Enter the size of the sample that you want in the text box. For
example, if you want 16 random rows to be included in the new table,
enter 16 into the text box.
If you select a random sample that is the entire source table, the result
is a random shuffle of the rows of the data table. If you specify
columns to stratify, the result is a random shuffle of each of the rows
for each group. See “Stratified Subsets” on page 169.
Creates a subset table that contains all columns from the active table.
Creates a subset table that contains only the selected columns from the
active table.
To give a name to the subset table, type a name in the box beside
Output table name.
To keep the subset table linked to the original table, click the box
beside Link to original data table. When you change values in one
table, the other table is updated.
To include formulas from the original table in the output columns,
click the box beside Copy formula. Include all columns needed for the
calculation of the formula.
To prevent JMP from evaluating columns’ formulas when the new
table is created, click the box beside Suppress formula evaluation.
To keep this window open after clicking OK, check the box beside
Keep dialog open.