Xaringan会渲染具有chunk选项class.source定义的代码块.如何解决

发布于06月12日

我正在使用xaringan创建带有Stan代码的幻灯片.我想展示模型代码，并使用下面的语法保存它.然而，当我添加class.source = "stan"(以适当地突出显示Stan语法)选项时，代码不会以它应该呈现的方式呈现:

---
output:   xaringan::moon_reader
---

---

```{cat, engine.opts = list(file = 'code/stan/ex1.stan'), name = "ex1.stan", class.source = "stan"}
data {
    int<lower=0> N; //number of data
    vector[N] x; //covariates
    vector[N] y; //variates
}

parameters {
  real alpha; //intercept
  real beta; //slope
  real<lower=0> sigma; //scatter
}

model {
  //priors
  alpha ~ normal(0, 10);
  beta ~ normal(0, 10);
  sigma ~ normal(0, 1);
  
  y ~normal(alpha + beta * x, sigma); //likelihood
}

因此，预期的结果将是:

推荐答案

正如我在上面的 comments 中所理解的那样，你只需要这样:

---
output:   xaringan::moon_reader
---

---
```{cat, engine.opts = list(file = "test.stan", lang = "stan")}
data {
    int<lower=0> N; //number of data
    vector[N] x; //covariates
    vector[N] y; //variates
}

parameters {
  real alpha; //intercept
  real beta; //slope
  real<lower=0> sigma; //scatter
}

model {
  //priors
  alpha ~ normal(0, 10);
  beta ~ normal(0, 10);
  sigma ~ normal(0, 1);
  
  y ~normal(alpha + beta * x, sigma); //likelihood
}
```