Hello
please help in finding the area under the curve (as in the attached figure) in R.
The curve has been created using logspline function on histogram (density )
For a numeric vector y, the function logspline(y) returns a fitted object holding information about the density of y. You can evaluate the density for a given logspline object ("fit") at some specific value x with dlogspline(x, fit). The area under the curve (in the bounds from x=x1 to x=x2) is the integral of this function from x1 to x2, which can be calculated in R with
integrate(f = dlogspline, lower = x1, upper = x2, fit = fit)
Note that this will be approximately 1 when the range x1...x2 spans the range of y, no matter how y is distributed.
Summera Khan Take the following steps:
Step 1: Load the required libraries.
Step 2: Create two vectors.
Step 3: Draw a ROC curve.
Step 4: Determine the AUC value.
https://www.projectpro.io/recipes/calculate-area-under-curve-r
https://stackoverflow.com/questions/4954507/calculate-the-area-under-a-curve
https://search.r-project.org/CRAN/refmans/DescTools/html/AUC.html
https://easystats.github.io/bayestestR/reference/area_under_curve.html
- Badges
- Science topic
- Similar topics
- Chemistry
- Biochemistry
- Biochemical Techniques
- Blotting Techniques
- Immunoblotting
- Dyes