add Disc in fig, add more instructions in R tutorial

docs/source/tutorial_r.ipynb

@@ -11,7 +11,9 @@
  "\n",
  "Python users can use **RcausalEGM**, a R libary for implementing CausalEGM.\n",
  "\n",
- "First of all, you need to install CausalEGM, please refer to the [install page](https://causalegm.readthedocs.io/en/latest/installation.html) to make sure **RcausalEGM** R package is installed.\n"
+ "First of all, you need to install CausalEGM, please refer to the [install page](https://causalegm.readthedocs.io/en/latest/installation.html) to make sure **RcausalEGM** R package is installed.\n",
+ "\n",
+ "The [CRAN package repository](https://cran.r-project.org/web/packages/RcausalEGM/index.html) provides an detailed [reference manual](https://cran.r-project.org/web/packages/RcausalEGM/RcausalEGM.pdf).\n"
  ]
  },
  {
@@ -43,7 +45,7 @@
  "metadata": {},
  "outputs": [],
  "source": [
- "#library(reticulate)\n",
+ "library(reticulate)\n",
  "#py_config()"
  ]
  },
@@ -176,6 +178,20 @@
  " n_iter=200)"
  ]
  },
+ {
+ "cell_type": "markdown",
+ "id": "62374c3b",
+ "metadata": {},
+ "source": [
+ "<div class=\"alert alert-warning\">\n",
+ "\n",
+ "**Note**\n",
+ "\n",
+ "If the above command stops with warning: `Please install the CausalEGM package using the function: install_causalegm()`. It means that `CausalEGM` is not installed in `Python`. Please run `install_causalegm()` in `R` or use command line `pip install CausalEGM` to make sure that `CausalEGM` is installed and `py_module_available('CausalEGM')` will return `True`.\n",
+ "\n",
+ "</div>"
+ ]
+ },
  {
  "cell_type": "markdown",
  "id": "ee5cf956",