I'm choosing Data|Select Cases and choosing to have PSPP select exactly 140 cases at random as per the dialog box. I’m not sure if this screen capture will show up in this newsreader but the problem can be easily duplicated by anyone opening PSPP and doing the above. Please note, This menu selection is made immediately upon opening PSPP. No commands were issued prior to the Select.
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Sent: Friday, November 1, 2019 12:00 PM
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Subject: Bug-gnu-pspp Digest, Vol 201, Issue 1
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Today's Topics:
1. Select Random Cases Bug (Eric E Graig)
2. Re: Select Random Cases Bug (John Darrington)
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Message: 1
Date: Fri, 1 Nov 2019 15:24:18 +0000
From: Eric E Graig <address@hidden>
To: "address@hidden" <address@hidden>
Subject: PSPP-BUG: Select Random Cases Bug
Message-ID: <address@hidden>
Content-Type: text/plain; charset="utf-8"
I am attempting to select 150 cases from an sav file with 1490 cases. The syntax, generated by PSPP itself:
COMPUTE case_$ = $CASENUM.
COMPUTE filter_$ = case_$ > 1400.
COMPUTE rv_$ = RV.UNIFORM (0, 1).
SORT BY filter_$, rv_$.
EXECUTE.
COMPUTE filter_$ = $CASENUM.
COMPUTE filter_$ = filter_$ <= 150
EXECUTE.
SORT BY case_$.
DELETE VARIABLES case_$, rv_$.
EXECUTE.
FILTER BY filter_$.
Throws this error:
COMPUTE case_$ = $CASENUM.
COMPUTE filter_$ = case_$ > 1400.
COMPUTE rv_$ = RV.UNIFORM (0, 1).
.1-4: error: COMPUTE: Unknown command `SORT'.
SORT BY filter_$, rv_$.
EXECUTE.
COMPUTE filter_$ = $CASENUM.
COMPUTE filter_$ = filter_$ <= 150
EXECUTE.
.1-4: error: EXECUTE: Unknown command `SORT'.
SORT BY case_$.
DELETE VARIABLES case_$, rv_$.
EXECUTE.
FILTER BY filter_$.
Since I've done nothing to modify the code, I have to assume this is a bug.
Eric
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Message: 2
Date: Fri, 1 Nov 2019 16:45:09 +0100
From: John Darrington <address@hidden>
To: Eric E Graig <address@hidden>
Cc: "address@hidden" <address@hidden>
Subject: Re: PSPP-BUG: Select Random Cases Bug
Message-ID: <20191101154509.x25a2a3nup2t5347@jocasta.intra>
Content-Type: text/plain; charset=us-ascii
On Fri, Nov 01, 2019 at 03:24:18PM +0000, Eric E Graig wrote:
I am attempting to select 150 cases from an sav file with 1490 cases. The syntax, generated by PSPP itself:
COMPUTE case_$ = $CASENUM.
COMPUTE filter_$ = case_$ > 1400.
COMPUTE rv_$ = RV.UNIFORM (0, 1).
SORT BY filter_$, rv_$.
EXECUTE.
COMPUTE filter_$ = $CASENUM.
COMPUTE filter_$ = filter_$ <= 150
EXECUTE.
SORT BY case_$.
DELETE VARIABLES case_$, rv_$.
EXECUTE.
FILTER BY filter_$.
Throws this error:
COMPUTE case_$ = $CASENUM.
COMPUTE filter_$ = case_$ > 1400.
COMPUTE rv_$ = RV.UNIFORM (0, 1).
.1-4: error: COMPUTE: Unknown command `SORT'.
SORT BY filter_$, rv_$.
EXECUTE.
COMPUTE filter_$ = $CASENUM.
COMPUTE filter_$ = filter_$ <= 150
EXECUTE.
.1-4: error: EXECUTE: Unknown command `SORT'.
SORT BY case_$.
DELETE VARIABLES case_$, rv_$.
EXECUTE.
FILTER BY filter_$.
Since I've done nothing to modify the code, I have to assume this is a bug.
On the face of it, it sounds like it.
However you haven't said
1) Which version of pspp you are using (perhaps it is a bug which has already been fixed).
2) Exactly what did you do (what sequence of menu actions did you
perform) to provoke this behaviour.
If you can provide this information, the hopefully we can investigate and if necessary correct the problem.
Regards,
John
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