Problem in updating the values

[Hafsa]

Hello everyone! I am facing a small problem in updating my values in a loop.
My aim is to get Kinetic energy in the end. The equation I have used is KE = Total E- mass.
The mass is a constant variable. The total energy (Total E) is in a TTree, so I need to access the values from the TTree and need to subtract mass from each entry. The total energy in TTree is labelled as DM_e. My code is yielding only 1 value. I am attaching the snippet of my code for clarity.

Any help will be appreciated.

[yus]

Hi,

you have the

double prev_EnergyBranch = DM_e;

only once, outside the loop. So how is it supposed to get updated within the loop then?

[Hafsa]

Sorry I could not follow you. If you mean that I must have pre_EnergyBranch=DM_e inside the loop so, it is there.
I am sorry if I sound mad to you.

[yus]

@Hanane_Amrani, what are you talking about?

[brown13]

@Hanane_Amrani

Once you have your look up table, the operation you are looking Kodi NoxMyBalanceNow for is a join, which in base R can be done with merge (and some options), or more straightforwardly with left_join(combo, codes, by = c("curr" = "Currency")) from the tidyverse. This will add the AlphabeticCode from the lookup as appropriate when the fuller name currency columns match up.

Hello,
Thanks for quick response, Looking for same issue and i found lots of information here, Really appreciate for help.