5、使用glm命令构建logistic回归模型,使用predict命令分别在训练集和测试集生成预测值。 6、校准图绘制 在训练集中绘制校准曲线Calibration plot,p=0.479>0.05,校准图可用。 在测试集中绘制校准曲线Calibration plot,p=0.204>0.05,校准图可用。 R完整...
plotcalibration函数的作用就是使用这种方法,生成并绘制校准曲线。 plotcalibration函数支持多种类型的校准曲线绘制,例如线性、对数和指数曲线。线性校准曲线最为简单,它表示物理量之间的线性关系,即y=ax+b。在绘制线性校准曲线时,plotcalibration函数会自动计算斜率和截距,并绘制出拟合直线。对于对数和指数校准曲线,函数也...
plot(val.prob(newdata$prob, newdata$Smoking_status, group=newdata$Income,g.group=1),lty=2,col=2,cex=0.65) 结果3: 输入4: plot(val.prob(newdata$prob, newdata$Smoking_status,group=newdata$Income,g.group=2), lty=2,lwd=4,col=1...
col = c(rgb(192, 98, 83, maxColorValue = 255)), subtitles = FALSE, main = "Calibrate plot") Figure 2:calibrate {rms} 2. plotCalibration {PredictABEL} 这个方式是需要先计算出预测值和真实值,然后用plotCalibration函数绘图,从下图可以看出,数据偏离还是很大的,说明模型的预测能力不够。 newdata <...
(700) # limit the time range ) plotCalibration(cox_fit_s, xlab = "Predicted Risk", ylab = "Observerd RISK") ## The default method for estimating calibration curves based on censored data has changed for riskRegression version 2019-9-8 or higher ## Set cens.method="jackknife" to get ...
plot(meanpred, meanobs,xlab = "Predicted risk", ylab = "Observed risk", pch = 16, ps = 2, xlim = c(0, 1), ylim = c(0, 1), cex.lab = 1.2, cex.axis = 1.1, las = 1) abline(0, 1, col = "grey", lwd = 1, lty = 1) ...
plot(nom) 1. 2. 3. 4. 5. 6. 7. 8. logisitc回归模型nomogram COX比例风险模型 f2 <- psm(Surv(time,status) ~ age+sex, data = lung, dist='lognormal') med <- Quantile(f2) # 计算中位生存时间 surv <- Survival(f2) # 构建生存概率函数 ...
(在图中显示3个点)## 绘制校正曲线plot(cal1,lwd=2,lty=1,conf.int=T,# 是否显示置信区间errbar.col="blue",#直线曲线bar颜色col="red", # 曲线颜色xlim=c(0.25,0.6),ylim=c(0.15,0.70),xlab="Nomogram-Predicted Probability of 1-Year DFS",ylab="Actual 1-Year DFS (proportion)",subtitles =...
plot(calibration_curve, main = "Calibration Curve") ``` 在这个示例中,我们创建了一个简单的二分类问题数据集。真实标签`y_true`包含4个样本的分类结果,而预测概率`y_prob`包含了对应样本的预测概率。 然后,我们使用`calibration`函数计算了校准曲线。通过指定`n_bins`参数,我们将数据集分成了10个小组,并计算...
PURPOSE:To plot a highly reliable calibrating curve simply by arranging the concentration values of a plural kinds of standard samples and the measured values of an analyzing device in the order of magnitudes, and making each concentration value correspond to the measured values in the arranged ...