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Re: [Bug-gnubg] No rollout-infos saved with pos.sgf

From: Holger
Subject: Re: [Bug-gnubg] No rollout-infos saved with pos.sgf
Date: Sun, 21 Dec 2003 02:27:53 +0100

On Sat, 20 Dec 2003 00:18:51 +0100, Jim Segrave wrote:
> On Fri 19 Dec 2003 (18:48 +0100), Joachim Matussek wrote:
> > if i do a rollout and save the position the sgf-file doesnt contain any 
> > infos about the rollout. It works fine if i save a match as .sgf.
> If you have a game or match and you want to roll out a move or cube
> decision and save the results in an .sgf file:
> Select the move or cube decision of interest in the game record.
> Use Analyse->Analyse Move to get an initial analysis. This will appear
> in the Annotation panel.
> In the annotation panel, if it's a cube decision, click the rollout
> button to do the rollout, if it's a move or choice of moves,
> hightlight the moves you are interested in in the Annotation and click
> the Rollout button in that window.
> When the rollout completes, save the file.

Unfortunately, any analysis is only saved in a _match_ .sgf file. A
position .sgf doesn't contain any ply analysis nor rollout data.

Why is it the case? Is the presumably necessary move struct not
present when dealing only with positions? But then it neither works
when I load a match, analyse or roll out a position and then save it
as a position.

As far as I can see the current situation makes saving positions
hardly useful. The only additional information over pos and match ids
is the match information (player names, date and match comment) in the
sgf game header.

For a position database this feature is indispensable. Btw, what were
the plans on how to store analysis in the pos db on gnubg.org?

After a while... I've found a workaround for saving the analysis of a
set up position:
- start a match
- set the pos up
- make any move or double (else one can't analyse it, but only get a
- go back to the set up pos in game record
- analyse it or do a rollout
- save as game or match/session

But this obviously doesn't work if the position is part of a match. Or
at least it requires first saving that pos and reloading it. Else the
entire match would be written to the .sgf which is not wanted here.

> Do *not* use the Hint window's rollout button or the dropdown menu items
> Analyse->Rollout or Analyse->Rollout Cube Decison. These don't store
> the results in the Annotation window. It's what's in the Annotation
> window which gets written to the .sgf file

But only to match .sgfs.



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