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 babElec #1 Posted : 06 January 2022 14:40:51(UTC) Rank: NewbieGroups: Registered Joined: 06/01/2022(UTC)Posts: 5Location: grenobleWas thanked: 1 time(s) in 1 post(s) Hello,I read some post about units, but my problem occurs only for Vector / matrix.If a declare a Matrix : P28V with three values (16V, 28V and 31.5V) and I want to display the result, the unit will be for each result : kg*m²/(A*s^3)Are there some restriction about it?For each Matrix that I used, I have to specify each time the unit (like V, mA) instead of the bigger one Another feature, I read a topic about it but without enough explanation. It could be very practical to have automatically the appropriate units factor (M,k, , m, µ, n) before the units.Thank You, Emilien
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 Jean Giraud #2 Posted : 06 January 2022 16:01:50(UTC) Rank: GuestGroups: Registered Joined: 04/07/2015(UTC)Posts: 6,866Was thanked: 981 time(s) in 809 post(s) Originally Posted by: babElec kg*mÂ²/(A*s^3)What does that mean to the Electrician measuring 735 000 volts ?A good way to get rid of those stupidities: make units silent
 Jean Giraud #3 Posted : 06 January 2022 17:04:36(UTC) Rank: GuestGroups: Registered Joined: 04/07/2015(UTC)Posts: 6,866Was thanked: 981 time(s) in 809 post(s) The Engineer style is what I used in my documents.There is no much chance God will return °C from measured mV.
 Razonar #4 Posted : 06 January 2022 20:21:31(UTC) Rank: Advanced MemberGroups: Registered Joined: 28/08/2014(UTC)Posts: 1,390Was thanked: 845 time(s) in 534 post(s) Originally Posted by: babElec Are there some restriction about it?For each Matrix that I used, I have to specify each time the unit (like V, mA) instead of the bigger one You can use the "unit placeholder" for display in the desired unit. Also can display several units for the same vector.Originally Posted by: babElec Another feature, I read a topic about it but without enough explanation. It could be very practical to have automatically the appropriate units factor (M,k, , m, µ, n) before the units.Yes. Or at least an ENG notation mode, like in the calculators, with scientific notation but with exponents multiples of three.Best regards.Alvaro.
 babElec #5 Posted : 06 January 2022 20:48:20(UTC) Rank: NewbieGroups: Registered Joined: 06/01/2022(UTC)Posts: 5Location: grenobleWas thanked: 1 time(s) in 1 post(s) THank you for your help.I understant I can change the unit manually to have the desired one. But it not optimized especially for the vector, each time I have to changed the unit manually. If all the data on the vector have differents units, it take some times.Have a nice day, Emilien
 Jean Giraud #6 Posted : 06 January 2022 21:35:51(UTC) Rank: GuestGroups: Registered Joined: 04/07/2015(UTC)Posts: 6,866Was thanked: 981 time(s) in 809 post(s) Off topic, Engineer style ... many solvers don't take units.Cheers Emilien ... Jean Inst_Colebrook Pipe Data.sm (72kb) downloaded 6 time(s).
 Jean Giraud #7 Posted : 06 January 2022 22:37:12(UTC) Rank: GuestGroups: Registered Joined: 04/07/2015(UTC)Posts: 6,866Was thanked: 981 time(s) in 809 post(s) Originally Posted by: overlord FindRoot() can solve with units.maple solve and maxima solve can solve units too if I remember correct.You are just short of many more solvers.That reminder was from Martin.
 overlord #8 Posted : 06 January 2022 22:47:24(UTC) Rank: Advanced MemberGroups: Registered Joined: 23/07/2013(UTC)Posts: 1,133Was thanked: 516 time(s) in 344 post(s) FindRoot() can solve with units.maple solve and maxima solve can solve units too if I remember correct.
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