丢弃 200 个随机健康实例。如何在 Rstudio 中实现这一点？
这是数据框：
https://www.kaggle.com/code/jamaltariqcheema/model-performance-and-comparison/data
我试过这个，但我得到了一个错误。
kidney_disease$hd <- ifelse(test=kidney_disease$hd == 0, yes="Healthy", no="Unhealthy")也许以下解决了问题的问题。
用sample随机选择行号，将默认value "Healthy"分配给新列hd并分配value "Unhealthy"到随机选择的行。
set.seed(2022) # Make results reproducible
i <- sample(nrow(kidney_disease), 200)
kidney_disease$hd <- "Healthy"
kidney_disease$hd[i] <- "Unhealthy"此SVG在Chrome/Edge和FireFox上运行流畅，但在Safari(Mac)上运行不畅。如您所见，SVG包含animateMotion标签，其路径由大数字组成。由于片段限制，SVG由58个圆...
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