大家好，
JMP 中是否有任何函数可以使用上次或先前的观察来填充缺失值？
谢谢，
阿齐扎
关于如何处理填充脚本的分组变量有什么建议吗？
假设 group_by col 是“grpcol”
我尝试添加一行 Group By(:grpcol);我不断收到“名称未解析：在访问或评估 Group By 时出现 Group By”。
可以在没有用于选择列的友好 UI 的情况下生存，但向通用脚本添加分组变量会很棒。
有什么建议么？
我碰巧有一个实用程序脚本可以执行此操作
Names Default To Here( 1 );
/****************************************************************
Description: This is a data manipulation utility. The user is presented with dialog
to choose one or more columns from the data table. Upon selecting the "Ok" button,
the missing values in the chosen columns will be "filled down". Filling down is performed by
copying the last previous non missing value that is present in the previous rows. This is performed sequentially by
row, starting with the second row in the data table.
This script is useful in situations where a data table has been created or imported that has
cells not completely filled as the should be (such as when importing an excel table with
merged cells in the data).
As an example a data table with this structure:
Row Lab Setup Replicate Result
1 A 1 1 100
2 . 2 101
3 . 3 103
4 2 1 101
5 . 2 99
6 . 3 97
If the columns "Lab" and "Setup are chosen to be filled down, then the resulting table is
Row Lab Setup Replicate Result
1 A 1 1 100
2 A 1 2 101
3 A 1 3 103
4 A 2 1 101
5 A 2 2 99
6 A 2 3 97
*****************************************************************/
_dt = Current Data Table();
colnames = _dt << Get Column Names( String );
fillcolumns = Expr(
selectedcols = _lb << Get Selected;
nc = N Items( selectedcols );
nr = N Rows( _dt );
For( ii = 2, ii <= nr, ii++,
For( jj = 1, jj <= nc, jj++,
If( is missing(Column( _dt, selectedcols[jj] )[ii]),
Column( _dt, selectedcols[jj] )[ii] = Column( _dt, selectedcols[jj] )[ii - 1]
);
)
);
_nw << Close Window;
);
_nw = New Window( "Fill Down Blanks",
_tb = Text Box("This script will fill missing values in the columns you select, by using the value in the last previous not empty row for that column"),
_hb = H List Box(
_pb = Panel Box( "Select Columns", _lb = List Box( colnames, width( 300 ) ) ),
_bb = Button Box( "Go", fillcolumns )
)
);
