browseURL功能在GCP AI笔记本中不起作用

Question

我正在尝试运行rstanarm库的GLM函数。我正在使用rpy2库来连接python和R包。代码如下：

glm_post = rstanarm.stan_glm(formula, data=r_dataframe, prior=my_prior,iter=niter, chains=nchains, cores=cores)

但是我在GCP AI Notebook中得到了这个错误：

/opt/conda/lib/python3.7/site-packages/rpy2/robjects/functions.py in __call__(self, *args, **kwargs)
    197                 kwargs[r_k] = v
    198         return (super(SignatureTranslatedFunction, self)
--> 199                 .__call__(*args, **kwargs))
    200 
    201 

/opt/conda/lib/python3.7/site-packages/rpy2/robjects/functions.py in __call__(self, *args, **kwargs)
    123             else:
    124                 new_kwargs[k] = conversion.py2rpy(v)
--> 125         res = super(Function, self).__call__(*new_args, **new_kwargs)
    126         res = conversion.rpy2py(res)
    127         return res

/opt/conda/lib/python3.7/site-packages/rpy2/rinterface_lib/conversion.py in _(*args, **kwargs)
     43 def _cdata_res_to_rinterface(function):
     44     def _(*args, **kwargs):
---> 45         cdata = function(*args, **kwargs)
     46         # TODO: test cdata is of the expected CType
     47         return _cdata_to_rinterface(cdata)

/opt/conda/lib/python3.7/site-packages/rpy2/rinterface.py in __call__(self, *args, **kwargs)
    675             )
    676             if error_occured[0]:
--> 677                 raise embedded.RRuntimeError(_rinterface._geterrmessage())
    678         return res
    679 

RRuntimeError: Error in utils::browseURL(paste0("file://", sinkfile_html)) : 
  'browser' must be a non-empty character string

Answer 1

通过在env.sh文件中添加这一行，我能够绕过browseURL错误。

export R_BROWSER="false"

Answer 2

browseURL()是一个R函数，它尝试打开web浏览器以显示URL中的内容。GCP AI笔记本在云上运行，它运行的系统可能没有web浏览器集。

您需要找到一种方法来调用R函数stan_glm()，这种方法不需要web浏览器。