[szgyula]

I could not find the right forum, but this seems to be "close enough". I wrote a very simple Android application that calculates the IMP to VP conversion for arbitrary number of boards. It does include the concavity correction. This was the good news. The bad news is that it is very spartan (you input the two IMPs and the number of boards and it shows the VPs). The question is: what should be the future of this app? I am happy to give it to anyone (free) but I do not want to invest a significant amount of work into making it "production quality". Thus, I am not sure it will be anywhere close to Play Store requirements anytime in the future. It also needs to be tested to make sure the calculation is correct (especially the concavity correction). Any thoughts?

Gyula

[Trinidad]

I couldn't think of anything else that I would want from this app, so I would be happy with a spartan version.

If I would add anything, it would be something like adding the VP result to previous results for this competition and storing the new value (i.e. input: The IMPs for match 3, show the VPs for match 3, add the VPs to those for match 1 and 2 and show the total.

One could obviously calculate some fun statistics too:

IMPs per board (the higher, the better your team)
Root mean square of IMPs per board (the higher, the swingier your team)

But that will still make it look Spartan. The way to change it is to make it vibrate, flash signals and cheer whenever you get more than 19 VPs, but that makes it impossible to use during a tournament.

Rik

[mycroft]

One "bell" would be to allow just putting in the boards, and having it generate the whole table.

[szgyula]

mycroft, on 2013-September-04, 10:51, said:

One "bell" would be to allow just putting in the boards, and having it generate the whole table.

Honestly, I do not see the point. In fact I have the full table generated in the application (you need it for the 0.01 corrections) but I can not imagine a meaningful way to present it on an android screen. What would make sense is a WIndows application to produce the full tables. That would be trivial to do and I will probably do it.

Is there enough interest in these? Can someone provide some place to put these where others can get them?

[pran]

szgyula, on 2013-September-04, 12:52, said:

Honestly, I do not see the point. In fact I have the full table generated in the application (you need it for the 0.01 corrections) but I can not imagine a meaningful way to present it on an android screen. What would make sense is a WIndows application to produce the full tables. That would be trivial to do and I will probably do it.

Is there enough interest in these? Can someone provide some place to put these where others can get them?

Honestly no interest: The scoring program I believe is used now for all matches in Norway prints out the complete IMP-VP table for the number of boards in the match on the score registration forms that we hand out to the players for their convenience before each round.

[szgyula]

pran, on 2013-September-04, 13:12, said:

Honestly no interest: The scoring program I believe is used now for all matches in Norway prints out the complete IMP-VP table for the number of boards in the match on the score registration forms that we hand out to the players for their convenience before each round.

That is interesting and it would be useful for the Android app: for 32 boards you have to print out 86 lines. How do you fit it on a page? In the good old days (25-0 to 15-15 scores) you only needed 16 lines. This is 5 times more and the scores are also longer (2+2 digits).

[pran]

szgyula, on 2013-September-04, 13:25, said:

That is interesting and it would be useful for the Android app: for 32 boards you have to print out 86 lines. How do you fit it on a page? In the good old days (25-0 to 15-15 scores) you only needed 16 lines. This is 7 times more and the scores are also longer (2 digits).

I haven't tried more than 28 board matches yet, but I suppose the answer is obvious when I say that we print out the forms on A4 sized paper?
(32 Board matches means 16 Boards/round so each form will hold 16 Boards, leaving ample space I believe.)

[mycroft]

Well, my android has a 7" screen, and the full table would fit very nicely on it, at least to 12 boards. What can I say, I don't think about cell phone people :-). I wouldn't mind having it to see, the same way the current ACBL 20-point scale is on the scorecard for view.

Norway already provides it, it seems; that gets the same value.

How about the reverse? Last round, I think I'm going to need 17.5 to place. How many IMPs is that on an N board match?

[szgyula]

pran, on 2013-September-04, 13:32, said:

I haven't tried more than 28 board matches yet, but I suppose the answer is obvious when I say that we print out the forms on A4 sized paper?
(32 Board matches means 16 Boards/round so each form will hold 16 Boards, leaving ample space I believe.)

Even at 16 boards you need 61 entries (20-0 is for an IMP difference of 60). You have 25 entries for the IMP scale, lines for the boards, etc. Isn't it crowded a bit on an A4 sheet? In Hungary we use double sided sheets for 32 boards and it was already crowded with the old IMP-VP scale.

Anyway: http://woefulwabbit.com/wbf-vp/ generates the tables for you so we are back to the Android app issue.

[FrancesHinden]

The EBU website also generates both the continuous and discrete scales as complete tables for any number of boards that you input.

[pran]

szgyula, on 2013-September-04, 13:52, said:

Even at 16 boards you need 61 entries (20-0 is for an IMP difference of 60). You have 25 entries for the IMP scale, lines for the boards, etc. Isn't it crowded a bit on an A4 sheet? In Hungary we use double sided sheets for 32 boards and it was already crowded with the old IMP-VP scale.

Anyway: http://woefulwabbit.com/wbf-vp/ generates the tables for you so we are back to the Android app issue.

It would appear that you somehow misunderstood me.
A 32 Board match with changing lineup at half-time requires 86 entries in the IMP-VP Conversion table.

And I made a quick test to se how the score sheets are printed on our A4 forms. They are very readable (2 pages for a complete match).

(To avoid possible misunderstanding: 1 page for each round of 16 Boards)

This post has been edited by pran: 2013-September-05, 00:40

[szgyula]

As apparently this is apparently a solved issue, for those few who are interested, here is the application, provided as is:

http://docs.google.c...TGxqTlRDMHVrTjA

Gyula

DISCLAIMER: This software is illegal to use during a bridge competition. Thus, if you are from Hungary, you are explicitly asked not to download it and if you play in a bridge tournament in Hungary, do not use it. I personally have no issue with it but using it will be considered a serious disciplinary problem in Hungary. You have been warned.