Estimates the area of the creatinine signal

crea(x, p, n, c3 = c(3, 3.1), c4 = c(4, 4.1))

Arguments

x

The spectrum of which you want to calculate the total area

p

The matched ppm variable to x

n

The noise estimation from the pproc

c3

The ppm lower and upper limits defining the creatinine signal at ppm 3

c4

The ppm lower and upper limits defining the creatinine signal at ppm 4

Value

An estimated value for the creatinine area

Details

crea() finds the ppm values between the upper and lower bounds provided by the sh parameter. Then it removes all values below the estimated noise level provided by pproc() to increase accuracy. Finally the remaining values are summed and is the value returned by the function.

See also

Other estimation: alter8r(), citra(), get_idx(), noi_(), roundr(), shift_pickr(), tota()

Author

Kyle Bario kylebario1@gmail.com

Examples

data(x,p,n) cr <- crea(x, p, n)