Thank you for your response.
Example with my own file.
.freq castem;
castem
-----------
N
-----------
1 153
2 150
3 632
-----------
Total 935
-----------
.select castem<>3 do;
Selecting, please wait...
(303 of 935 selected)
.begin; ==> No operative (idem begin without < ; >)
ERROR: Line 1: Syntax error at pos 7:
ERROR: Unexpected end of line!
Perhaps a ";" is missing?
.freq castem; ==> no selection...
castem
-----------
N
-----------
1 153
2 150
3 632
-----------
Total 935
-----------
.select castem=1 do drop data; ==> objective : keep codage 1
Selecting, please wait...
(153 of 935 selected)
(153 observations dropped)
.freq castem; ==> Selection code<> 1 (link avec drop data ?)
castem
-----------
N
-----------
2 150
3 632
-----------
Total 782
-----------
And an another (and last) question : how to delete the current selection?
Thank you.
Bernard Branger, Nantes, France