ggrcs {ggrcs}

ggrcs

Description

A Function to Draw Histograms and Restricted Cubic Splines (RCS)

Arguments

data

need a dataframe

fit

You need the fitted model.Must be lrm or coxph.

x

The target variable you wish to fit. It is displayed on the X-axis when plotting.

Details

You can use this function to easily draw a combined.histogram and restricted cubic spline.The function draws the graph through ggplot2.RCS fitting requires the use of the rcs function of the RMS package.Can fit cox regression,logistic regression and linear regression models.

Value

a picture

Examples

library(rms)
library(ggplot2)
library(scales)
library(cowplot)
dt<-smoke
dd<-datadist(dt)
options(datadist='dd')
fit<- cph(Surv(time,status==1) ~ rcs(age,4)+gender, x=TRUE, y=TRUE,data=dt)
###single group
ggrcs(data=dt,fit=fit,x="age")
##two groups
ggrcs(data=dt,fit=fit,x="age",group="gender")