Paul Abraham <p...@acasa.org.uk> writes: > Yes, they're both standard registers (both bank current accounts in fact).
Then IMHO this is a bug. That setting should not affect the Rate Column. Please file a bug in Bugzilla. Thanks! > Paul -derek > On 20/02/2020 16:06, Derek Atkins wrote: > > Hi, > > Are you doing this in a standard register or in a Stock/Mutual register? > In a stock/mutual register it has inputs for quantity, amount, and > price-per-unit. In this case, the quantity and amount are stored, and the > price-per-unit is computed. You can enter 2/3 and GnuCash will compute > the 3rd for you, so if we recommend entering in the two stored values. > > In the regular register, however, where you get an "exchange rate dialog", > that's not how it works. In that case it DOES store and use the exchange > rate. So if you have the rate "displayed" as a decimal then it can round > and cause this behavior. If it's stored as a fraction, then you wont have > that behavior. > > It USED to be the case that the "rate" column was hidden and always stored > as a fraction, so this wasn't an issue. I'm not sure when it changed. > > John's message reminded me of this change, but I was unaware that it > affected the rate column (which, IMHO, it should not have since it is > supposed to be a non-visible column in the standard register). > > -derek > > On Thu, February 20, 2020 1:53 pm, Paul Abraham wrote: > > No, sorry, that's not what I meant. I'm sure the fractional > representation, unhelpful though it is, is right*. > > It's the fact that if I set the display setting to decimal, gnucash > tramples on the input value for the converted amount - I enter > 11102.12 > and it changes it to 11102.08. This is what is not very clever - > the > programming here . Display settings shouldn't affect actual data, > and > especially not user entered data (and even more especially not > without > advising the user - it does this silently). > > * ... well, in a sense: The arithmetic is right. But that isn't how > exchange rates work - banks don't start from the original and > converted > values and calculate an absolutely precise ratio between the two. > The > exchange rate comes first. The original value is multiplied by the > exchange rate (which is a decimal value) and then round the result > to > form the converted value. Gnucash's fractional version is a > fiction. > > Regards > > Paul Abraham > > On 20/02/2020 01:01, John Ralls wrote: > > That's not mangling the data, it's presenting the exact value of > 11102.12/1975.10, a number that isn't representable as a decimal > without rounding. > > As for the display being clever, of course it isn't, it's a > computer. > > But it you enter the two values 11102.12 and 1975.10 GnuCash > shouldn't > change them, it should just calculate the ratio and present that > as the > price, either exactly as 5 + 61331/98755 or as 5.621041972558352 > rounded to however many decimal places. When I test that, it's > exactly > what I get, see the attached screen shot. Note the exact exchange > rate > in the exchange rate box but the rounded decimal values to the > right of > it. > > Regards, > > John Ralls > > On Feb 19, 2020, at 12:12 PM, Paul Abraham <[1]p...@acasa.org.uk> > wrote: > Hmm. That seems to work, but it certainly isn't what I want. The > exchange rate is now shown as "5 + 61331/98755" which is less > than > helpful - it most certainly is not how real world exchange > rates > are > quoted, and it makes comparison almost impossible! > Why does the display option mangle the data? That isn't very > clever. I > think I'll just stick in a fudge factor as a separate split to > correct > the total though it's a long way from ideal. > Thanks very much for the answer, though. I can stop chasing > moonbeams > now ;-) > > [cid:part2.62ACF325.60F042A3@acasa.org.uk] > > References > > 1. mailto:p...@acasa.org.uk > _______________________________________________ > gnucash-user mailing list > gnucash-user@gnucash.org > To update your subscription preferences or to unsubscribe: > https://lists.gnucash.org/mailman/listinfo/gnucash-user > If you are using Nabble or Gmane, please see > https://wiki.gnucash.org/wiki/Mailing_Lists for more information. > ----- > Please remember to CC this list on all your replies. > You can do this by using Reply-To-List or Reply-All. > -- Derek Atkins 617-623-3745 de...@ihtfp.com www.ihtfp.com Computer and Internet Security Consultant _______________________________________________ gnucash-user mailing list gnucash-user@gnucash.org To update your subscription preferences or to unsubscribe: https://lists.gnucash.org/mailman/listinfo/gnucash-user If you are using Nabble or Gmane, please see https://wiki.gnucash.org/wiki/Mailing_Lists for more information. ----- Please remember to CC this list on all your replies. You can do this by using Reply-To-List or Reply-All.
