[R] use mathematics formula

[John Kane]

Explicez ce que vous voulez faire et donnez nous une
petite example.

Lisez et suivez les instuctions ici

http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained,
reproducible code.
 
On peut ecrire en anglais et francais.

--- elyakhlifi mustapha <elyakhlifi_mustapha at yahoo.fr>
wrote:

> hello,
> I wanna use some mathematics formula and to do this
> I tried several way in paricular using 
> strsplit
> textconnection
> scan
> setdiff
> but I think that it's a lil hard
> the data frame that I'm working on is as follow
> 
> > donCalcara2
>    Id_Cara                                          
>                                                     
>       Form_C
> 1      743                                          
>    if C325=. then C743=(C152/C103)*100| else
> C743=(C152/C325)*100
> 2      627 if C137=. Then C627=.| else do| if C109=.
> Then C627=(C138/S138)*(100-C137)| else
> C627=(C138/S138)*C109| end
> 3      638                                          
>                                                C638
> = C103 / S103
> 4      740                                          
>    if C325=. then C740=(C346/C103)*100| else
> C740=(C346/C325)*100
> 5      739                                        
> if C155=. then C739=(C570/C103)*100| else
> C739=C155/(C155+C103)*100
> 6      628                                          
>    if C325=. then C628=(C455/C103)*100| else
> C628=(C455/C325)*100
> 7      747                                          
>      if C325=. then C747=(C27/C103)*100| else
> C747=(C27/C325)*100
> 8      629                                          
>    if C325=. then C629=(C454/C103)*100| else
> C629=(C454/C325)*100
> 9      737                                          
>    if C325=. then C737=(C457/C103)*100| else
> C737=(C457/C325)*100
> 10     750                                          
>    if C325=. then C750=(C431/C103)*100| else
> C750=(C431/C325)*100
> 11     754                                       if
> C325=. then C754=(C894/C103)*100| else
> C754=(C894/(C325+C894))*100
> 12     760                                          
>                                                
> C760= C627 / 0.89
> 13     761                                          
>                                                C761
> = C177 * 0.89
> 14     586                                          
>                               if C325=. then
> C586=(C588/C103)*100
> 15     896                                          
>                               if C325=. then
> C896=(C895/C103)*100
> 16     751                                          
>    if C325=. then C751=(C433/C103)*100| else
> C751=(C433/C325)*100
> 17     738                                          
>    if C325=. then C738=(C151/C103)*100| else
> C738=(C151/C325)*100
> 18     744                                          
>                                             
> C744=(C627*C177)/100
> 19     633                                          
>    if C325=. then C633=(C130/C103)*100| else
> C633=(C130/C325)*100
> 20     732                                          
>    if C325=. then C732=(C585/C103)*100| else
> C732=(C585/C325)*100
> 21     898                                          
>                               if C325=. then
> C898=(C897/C103)*100
> 
> Can you help me please?
> I'm French so if you can speak French it's better
> for me because of my English level
> 
> 
>      
>
_____________________________________________________________________________
> 
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