[R] long character string problem

[Stephen Tucker]

I think you are looking for 
fct <- c(parse(text=cum1),parse(text=cum2))

although you need to include operators before your A coefficients (for
example,

...C11)A12*...




--- toby909 at gmail.com wrote:

> Hi All
> 
> I am having 2 very long character strings (550chars) and I want to put them
> as 
> expressions together with c(). The problem is that I also get these 
> double-quotes, as seen below in 'fct'. How can I remove these
> double-quotes? I 
> tried as.name() but it did not work (because of size?). These are creating 
> trouble with subsequent programs, which I tested with strings that for some
> 
> reason do not have these double quotes (see very bottom).
> 
> 
> 
> 
> 
>  > cum1
> [1] 
>
"A11*(X11*x1+X21*x2)+1*sqrt(B11*(X11*x1+X21*x2)^2+C11)A12*(X12*x1+X22*x2)+1*sqrt(B12*(X12*x1+X22*x2)^2+C12)A13*(X13*x1+X23*x2)+-1*sqrt(B13*(X13*x1+X23*x2)^2+C13)A14*(X14*x1+X24*x2)+-1*sqrt(B14*(X14*x1+X24*x2)^2+C14)A15*(X15*x1+X25*x2)+1*sqrt(B15*(X15*x1+X25*x2)^2+C15)A16*(X16*x1+X26*x2)+1*sqrt(B16*(X16*x1+X26*x2)^2+C16)A17*(X17*x1+X27*x2)+1*sqrt(B17*(X17*x1+X27*x2)^2+C17)A18*(X18*x1+X28*x2)+1*sqrt(B18*(X18*x1+X28*x2)^2+C18)A19*(X19*x1+X29*x2)+-1*sqrt(B19*(X19*x1+X29*x2)^2+C19)A110*(X110*x1+X210*x2)+1*sqrt(B110*(X110*x1+X210*x2)^2+C110)"
>  > cum2
> [1] 
>
"A21*(X11*x1+X21*x2)+1*sqrt(B21*(X11*x1+X21*x2)^2+C21)A22*(X12*x1+X22*x2)+1*sqrt(B22*(X12*x1+X22*x2)^2+C22)A23*(X13*x1+X23*x2)+-1*sqrt(B23*(X13*x1+X23*x2)^2+C23)A24*(X14*x1+X24*x2)+-1*sqrt(B24*(X14*x1+X24*x2)^2+C24)A25*(X15*x1+X25*x2)+1*sqrt(B25*(X15*x1+X25*x2)^2+C25)A26*(X16*x1+X26*x2)+1*sqrt(B26*(X16*x1+X26*x2)^2+C26)A27*(X17*x1+X27*x2)+1*sqrt(B27*(X17*x1+X27*x2)^2+C27)A28*(X18*x1+X28*x2)+1*sqrt(B28*(X18*x1+X28*x2)^2+C28)A29*(X19*x1+X29*x2)+-1*sqrt(B29*(X19*x1+X29*x2)^2+C29)A210*(X110*x1+X210*x2)+1*sqrt(B210*(X110*x1+X210*x2)^2+C210)"
>  > fct = c(as.expression(cum1), as.expression(cum2))
>  > fct
>
expression("A11*(X11*x1+X21*x2)+1*sqrt(B11*(X11*x1+X21*x2)^2+C11)A12*(X12*x1+X22*x2)+1*sqrt(B12*(X12*x1+X22*x2)^2+C12)A13*(X13*x1+X23*x2)+-1*sqrt(B13*(X13*x1+X23*x2)^2+C13)A14*(X14*x1+X24*x2)+-1*sqrt(B14*(X14*x1+X24*x2)^2+C14)A15*(X15*x1+X25*x2)+1*sqrt(B15*(X15*x1+X25*x2)^2+C15)A16*(X16*x1+X26*x2)+1*sqrt(B16*(X16*x1+X26*x2)^2+C16)A17*(X17*x1+X27*x2)+1*sqrt(B17*(X17*x1+X27*x2)^2+C17)A18*(X18*x1+X28*x2)+1*sqrt(B18*(X18*x1+X28*x2)^2+C18)A19*(X19*x1+X29*x2)+-1*sqrt(B19*(X19*x1+X29*x2)^2+C19)A110*(X110*x1+X210*x2)+1*sqrt(B110*(X110*x1+X210*x2)^2+C110)",
> 
> 
>  
>
"A21*(X11*x1+X21*x2)+1*sqrt(B21*(X11*x1+X21*x2)^2+C21)A22*(X12*x1+X22*x2)+1*sqrt(B22*(X12*x1+X22*x2)^2+C22)A23*(X13*x1+X23*x2)+-1*sqrt(B23*(X13*x1+X23*x2)^2+C23)A24*(X14*x1+X24*x2)+-1*sqrt(B24*(X14*x1+X24*x2)^2+C24)A25*(X15*x1+X25*x2)+1*sqrt(B25*(X15*x1+X25*x2)^2+C25)A26*(X16*x1+X26*x2)+1*sqrt(B26*(X16*x1+X26*x2)^2+C26)A27*(X17*x1+X27*x2)+1*sqrt(B27*(X17*x1+X27*x2)^2+C27)A28*(X18*x1+X28*x2)+1*sqrt(B28*(X18*x1+X28*x2)^2+C28)A29*(X19*x1+X29*x2)+-1*sqrt(B29*(X19*x1+X29*x2)^2+C29)A210*(X110*x1+X210*x2)+1*sqrt(B210*(X110*x1+X210*x2)^2+C210)")
>  >
> 
> 
> 
> 
> 
> 
> 
> 
>  > fct = c(expression(2*x1^3-7*x2^2-9), expression(x1^2-x2^3+1))
>  > fct
> expression(2 * x1^3 - 7 * x2^2 - 9, x1^2 - x2^3 + 1)
> 
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