IR.ipynb

ir.ipynb

{
  "nbformat": 4,
  "nbformat_minor": 0,
  "metadata": {
    "colab": {
      "provenance": [],
      "include_colab_link": true
    },
    "kernelspec": {
      "name": "ir",
      "display_name": "R"
    }
  },
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "view-in-github",
        "colab_type": "text"
      },
      "source": [
        "<a href=\"https://colab.research.google.com/gist/MathewBiddle/1c67ce45c77e8c8bb39921c599f10aed/ir.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "# NOTE: This notebook is unnecessary since Google Colab now directly supports R. Please navigate to `Runtime -> Change runtime type` and select `R`."
      ],
      "metadata": {
        "id": "SWeg7u8IjsOA"
      }
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "rCEtur7fajGn",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "6776cb29-cd09-416d-9817-65fc70934290"
      },
      "source": [
        "cat(system('python3 -c \"from google.colab import drive\\ndrive.mount()\"', intern=TRUE), sep='\\n', wait=TRUE)"
      ],
      "execution_count": 1,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stderr",
          "text": [
            "Warning message in system(\"python3 -c \\\"from google.colab import drive\\ndrive.mount()\\\"\", :\n",
            "“running command 'python3 -c \"from google.colab import drive\n",
            "drive.mount()\"' had status 1”\n"
          ]
        },
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "\n",
            "TRUE\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "T6aH0TahbghZ"
      },
      "source": [
        "?system"
      ],
      "execution_count": 2,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "3o11KxDzyC0g",
        "outputId": "26ed7293-94f2-4259-e492-3b884572b5ae",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "source": [
        "install.packages(\"rgl\", repos = \"http://cran.rstudio.com/\")\n",
        "install.packages(\"ConsRank\", repos = \"http://cran.rstudio.com/\")\n",
        "library(\"ConsRank\")"
      ],
      "execution_count": 3,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stderr",
          "text": [
            "Installing package into ‘/usr/local/lib/R/site-library’\n",
            "(as ‘lib’ is unspecified)\n",
            "\n",
            "also installing the dependency ‘htmlwidgets’\n",
            "\n",
            "\n",
            "Installing package into ‘/usr/local/lib/R/site-library’\n",
            "(as ‘lib’ is unspecified)\n",
            "\n",
            "also installing the dependencies ‘XML’, ‘rlist’, ‘proxy’, ‘gtools’\n",
            "\n",
            "\n",
            "Loading required package: rgl\n",
            "\n",
            "This build of rgl does not include OpenGL functions.  Use\n",
            " rglwidget() to display results, e.g. via options(rgl.printRglwidget = TRUE).\n",
            "\n",
            "\n",
            "Attaching package: ‘ConsRank’\n",
            "\n",
            "\n",
            "The following object is masked from ‘package:base’:\n",
            "\n",
            "    labels\n",
            "\n",
            "\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "SPYGePw53fWq"
      },
      "source": [
        "system(\"add-apt-repository -y ppa:marutter/rrutter\")\n",
        "system(\"add-apt-repository -y ppa:marutter/c2d4u\")\n",
        "system(\"apt-get update\")\n",
        "system(\"apt install -y r-cran-rstan\")"
      ],
      "execution_count": 4,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "1IzjHJFxv01f",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "8fd6e441-32e4-466f-ad46-ee480145a00f"
      },
      "source": [
        "install.packages('tidync')"
      ],
      "execution_count": 5,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stderr",
          "text": [
            "Installing package into ‘/usr/local/lib/R/site-library’\n",
            "(as ‘lib’ is unspecified)\n",
            "\n",
            "also installing the dependencies ‘ncdf4’, ‘ncmeta’, ‘RNetCDF’\n",
            "\n",
            "\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "sdyV67dk2vGx"
      },
      "source": [
        "library(tidync)"
      ],
      "execution_count": 11,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "IS3VN3qamf20"
      },
      "source": [
        "url = 'https://github.com/ioos/ioos-atn-data/raw/main/templates/atn_22275_loggerhead_turtle_19970720_20040216.nc'\n",
        "download.file(url, 'atn_trajectory_template.nc', mode = \"wb\")"
      ],
      "execution_count": 19,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "library(ncdf4)\n",
        "ncmeta::nc_vars(\"atn_trajectory_template.nc\")\n",
        "ncmeta::nc_grids(\"atn_trajectory_template.nc\") %>% tidyr::unnest(cols = c(variables))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 1000
        },
        "id": "yDH45Ec_Y2v0",
        "outputId": "59f59645-ffcd-4659-e6ec-248f51635fb2"
      },
      "execution_count": 20,
      "outputs": [
        {
          "output_type": "display_data",
          "data": {
            "text/html": [
              "<table class=\"dataframe\">\n",
              "<caption>A tibble: 32 × 5</caption>\n",
              "<thead>\n",
              "\t<tr><th scope=col>id</th><th scope=col>name</th><th scope=col>type</th><th scope=col>ndims</th><th scope=col>natts</th></tr>\n",
              "\t<tr><th scope=col>&lt;int&gt;</th><th scope=col>&lt;chr&gt;</th><th scope=col>&lt;chr&gt;</th><th scope=col>&lt;int&gt;</th><th scope=col>&lt;int&gt;</th></tr>\n",
              "</thead>\n",
              "<tbody>\n",
              "\t<tr><td> 0</td><td>Ptt                 </td><td>NC_INT   </td><td>1</td><td> 5</td></tr>\n",
              "\t<tr><td> 1</td><td>animal              </td><td>NC_STRING</td><td>0</td><td>22</td></tr>\n",
              "\t<tr><td> 2</td><td>animal_length       </td><td>NC_FLOAT </td><td>0</td><td> 3</td></tr>\n",
              "\t<tr><td> 3</td><td>animal_life_stage   </td><td>NC_STRING</td><td>0</td><td> 2</td></tr>\n",
              "\t<tr><td> 4</td><td>animal_sex          </td><td>NC_STRING</td><td>0</td><td> 2</td></tr>\n",
              "\t<tr><td> 5</td><td>animal_weight       </td><td>NC_FLOAT </td><td>0</td><td> 4</td></tr>\n",
              "\t<tr><td> 6</td><td>comment             </td><td>NC_STRING</td><td>1</td><td> 3</td></tr>\n",
              "\t<tr><td> 7</td><td>count               </td><td>NC_DOUBLE</td><td>1</td><td> 5</td></tr>\n",
              "\t<tr><td> 8</td><td>crs                 </td><td>NC_INT   </td><td>0</td><td> 6</td></tr>\n",
              "\t<tr><td> 9</td><td>deploy_id           </td><td>NC_INT   </td><td>1</td><td> 5</td></tr>\n",
              "\t<tr><td>10</td><td>ellipse_orientation </td><td>NC_DOUBLE</td><td>1</td><td> 8</td></tr>\n",
              "\t<tr><td>11</td><td>error_radius        </td><td>NC_DOUBLE</td><td>1</td><td> 8</td></tr>\n",
              "\t<tr><td>12</td><td>instrument          </td><td>NC_STRING</td><td>1</td><td> 3</td></tr>\n",
              "\t<tr><td>13</td><td>instrument_location </td><td>NC_STRING</td><td>0</td><td> 7</td></tr>\n",
              "\t<tr><td>14</td><td>instrument_tag      </td><td>NC_STRING</td><td>0</td><td> 6</td></tr>\n",
              "\t<tr><td>15</td><td>lat                 </td><td>NC_DOUBLE</td><td>1</td><td>14</td></tr>\n",
              "\t<tr><td>16</td><td>location_class      </td><td>NC_STRING</td><td>1</td><td>10</td></tr>\n",
              "\t<tr><td>17</td><td>lon                 </td><td>NC_DOUBLE</td><td>1</td><td>14</td></tr>\n",
              "\t<tr><td>18</td><td>offset              </td><td>NC_DOUBLE</td><td>1</td><td> 8</td></tr>\n",
              "\t<tr><td>19</td><td>offset_orientation  </td><td>NC_DOUBLE</td><td>1</td><td> 8</td></tr>\n",
              "\t<tr><td>20</td><td>qartod_location_flag</td><td>NC_INT   </td><td>1</td><td> 9</td></tr>\n",
              "\t<tr><td>21</td><td>qartod_rollup_flag  </td><td>NC_INT   </td><td>1</td><td> 9</td></tr>\n",
              "\t<tr><td>22</td><td>qartod_speed_flag   </td><td>NC_INT   </td><td>1</td><td> 9</td></tr>\n",
              "\t<tr><td>23</td><td>qartod_time_flag    </td><td>NC_INT   </td><td>1</td><td> 9</td></tr>\n",
              "\t<tr><td>24</td><td>semi_major_axis     </td><td>NC_DOUBLE</td><td>1</td><td> 8</td></tr>\n",
              "\t<tr><td>25</td><td>semi_minor_axis     </td><td>NC_DOUBLE</td><td>1</td><td> 8</td></tr>\n",
              "\t<tr><td>26</td><td>taxon_lsid          </td><td>NC_STRING</td><td>0</td><td> 6</td></tr>\n",
              "\t<tr><td>27</td><td>taxon_name          </td><td>NC_STRING</td><td>0</td><td> 4</td></tr>\n",
              "\t<tr><td>28</td><td>time                </td><td>NC_DOUBLE</td><td>1</td><td>11</td></tr>\n",
              "\t<tr><td>29</td><td>trajectory          </td><td>NC_STRING</td><td>0</td><td> 2</td></tr>\n",
              "\t<tr><td>30</td><td>type                </td><td>NC_STRING</td><td>1</td><td> 3</td></tr>\n",
              "\t<tr><td>31</td><td>z                   </td><td>NC_INT   </td><td>1</td><td>10</td></tr>\n",
              "</tbody>\n",
              "</table>\n"
            ],
            "text/markdown": "\nA tibble: 32 × 5\n\n| id &lt;int&gt; | name &lt;chr&gt; | type &lt;chr&gt; | ndims &lt;int&gt; | natts &lt;int&gt; |\n|---|---|---|---|---|\n|  0 | Ptt                  | NC_INT    | 1 |  5 |\n|  1 | animal               | NC_STRING | 0 | 22 |\n|  2 | animal_length        | NC_FLOAT  | 0 |  3 |\n|  3 | animal_life_stage    | NC_STRING | 0 |  2 |\n|  4 | animal_sex           | NC_STRING | 0 |  2 |\n|  5 | animal_weight        | NC_FLOAT  | 0 |  4 |\n|  6 | comment              | NC_STRING | 1 |  3 |\n|  7 | count                | NC_DOUBLE | 1 |  5 |\n|  8 | crs                  | NC_INT    | 0 |  6 |\n|  9 | deploy_id            | NC_INT    | 1 |  5 |\n| 10 | ellipse_orientation  | NC_DOUBLE | 1 |  8 |\n| 11 | error_radius         | NC_DOUBLE | 1 |  8 |\n| 12 | instrument           | NC_STRING | 1 |  3 |\n| 13 | instrument_location  | NC_STRING | 0 |  7 |\n| 14 | instrument_tag       | NC_STRING | 0 |  6 |\n| 15 | lat                  | NC_DOUBLE | 1 | 14 |\n| 16 | location_class       | NC_STRING | 1 | 10 |\n| 17 | lon                  | NC_DOUBLE | 1 | 14 |\n| 18 | offset               | NC_DOUBLE | 1 |  8 |\n| 19 | offset_orientation   | NC_DOUBLE | 1 |  8 |\n| 20 | qartod_location_flag | NC_INT    | 1 |  9 |\n| 21 | qartod_rollup_flag   | NC_INT    | 1 |  9 |\n| 22 | qartod_speed_flag    | NC_INT    | 1 |  9 |\n| 23 | qartod_time_flag     | NC_INT    | 1 |  9 |\n| 24 | semi_major_axis      | NC_DOUBLE | 1 |  8 |\n| 25 | semi_minor_axis      | NC_DOUBLE | 1 |  8 |\n| 26 | taxon_lsid           | NC_STRING | 0 |  6 |\n| 27 | taxon_name           | NC_STRING | 0 |  4 |\n| 28 | time                 | NC_DOUBLE | 1 | 11 |\n| 29 | trajectory           | NC_STRING | 0 |  2 |\n| 30 | type                 | NC_STRING | 1 |  3 |\n| 31 | z                    | NC_INT    | 1 | 10 |\n\n",
            "text/latex": "A tibble: 32 × 5\n\\begin{tabular}{lllll}\n id & name & type & ndims & natts\\\\\n <int> & <chr> & <chr> & <int> & <int>\\\\\n\\hline\n\t  0 & Ptt                  & NC\\_INT    & 1 &  5\\\\\n\t  1 & animal               & NC\\_STRING & 0 & 22\\\\\n\t  2 & animal\\_length        & NC\\_FLOAT  & 0 &  3\\\\\n\t  3 & animal\\_life\\_stage    & NC\\_STRING & 0 &  2\\\\\n\t  4 & animal\\_sex           & NC\\_STRING & 0 &  2\\\\\n\t  5 & animal\\_weight        & NC\\_FLOAT  & 0 &  4\\\\\n\t  6 & comment              & NC\\_STRING & 1 &  3\\\\\n\t  7 & count                & NC\\_DOUBLE & 1 &  5\\\\\n\t  8 & crs                  & NC\\_INT    & 0 &  6\\\\\n\t  9 & deploy\\_id            & NC\\_INT    & 1 &  5\\\\\n\t 10 & ellipse\\_orientation  & NC\\_DOUBLE & 1 &  8\\\\\n\t 11 & error\\_radius         & NC\\_DOUBLE & 1 &  8\\\\\n\t 12 & instrument           & NC\\_STRING & 1 &  3\\\\\n\t 13 & instrument\\_location  & NC\\_STRING & 0 &  7\\\\\n\t 14 & instrument\\_tag       & NC\\_STRING & 0 &  6\\\\\n\t 15 & lat                  & NC\\_DOUBLE & 1 & 14\\\\\n\t 16 & location\\_class       & NC\\_STRING & 1 & 10\\\\\n\t 17 & lon                  & NC\\_DOUBLE & 1 & 14\\\\\n\t 18 & offset               & NC\\_DOUBLE & 1 &  8\\\\\n\t 19 & offset\\_orientation   & NC\\_DOUBLE & 1 &  8\\\\\n\t 20 & qartod\\_location\\_flag & NC\\_INT    & 1 &  9\\\\\n\t 21 & qartod\\_rollup\\_flag   & NC\\_INT    & 1 &  9\\\\\n\t 22 & qartod\\_speed\\_flag    & NC\\_INT    & 1 &  9\\\\\n\t 23 & qartod\\_time\\_flag     & NC\\_INT    & 1 &  9\\\\\n\t 24 & semi\\_major\\_axis      & NC\\_DOUBLE & 1 &  8\\\\\n\t 25 & semi\\_minor\\_axis      & NC\\_DOUBLE & 1 &  8\\\\\n\t 26 & taxon\\_lsid           & NC\\_STRING & 0 &  6\\\\\n\t 27 & taxon\\_name           & NC\\_STRING & 0 &  4\\\\\n\t 28 & time                 & NC\\_DOUBLE & 1 & 11\\\\\n\t 29 & trajectory           & NC\\_STRING & 0 &  2\\\\\n\t 30 & type                 & NC\\_STRING & 1 &  3\\\\\n\t 31 & z                    & NC\\_INT    & 1 & 10\\\\\n\\end{tabular}\n",
            "text/plain": [
              "   id name                 type      ndims natts\n",
              "1   0 Ptt                  NC_INT    1      5   \n",
              "2   1 animal               NC_STRING 0     22   \n",
              "3   2 animal_length        NC_FLOAT  0      3   \n",
              "4   3 animal_life_stage    NC_STRING 0      2   \n",
              "5   4 animal_sex           NC_STRING 0      2   \n",
              "6   5 animal_weight        NC_FLOAT  0      4   \n",
              "7   6 comment              NC_STRING 1      3   \n",
              "8   7 count                NC_DOUBLE 1      5   \n",
              "9   8 crs                  NC_INT    0      6   \n",
              "10  9 deploy_id            NC_INT    1      5   \n",
              "11 10 ellipse_orientation  NC_DOUBLE 1      8   \n",
              "12 11 error_radius         NC_DOUBLE 1      8   \n",
              "13 12 instrument           NC_STRING 1      3   \n",
              "14 13 instrument_location  NC_STRING 0      7   \n",
              "15 14 instrument_tag       NC_STRING 0      6   \n",
              "16 15 lat                  NC_DOUBLE 1     14   \n",
              "17 16 location_class       NC_STRING 1     10   \n",
              "18 17 lon                  NC_DOUBLE 1     14   \n",
              "19 18 offset               NC_DOUBLE 1      8   \n",
              "20 19 offset_orientation   NC_DOUBLE 1      8   \n",
              "21 20 qartod_location_flag NC_INT    1      9   \n",
              "22 21 qartod_rollup_flag   NC_INT    1      9   \n",
              "23 22 qartod_speed_flag    NC_INT    1      9   \n",
              "24 23 qartod_time_flag     NC_INT    1      9   \n",
              "25 24 semi_major_axis      NC_DOUBLE 1      8   \n",
              "26 25 semi_minor_axis      NC_DOUBLE 1      8   \n",
              "27 26 taxon_lsid           NC_STRING 0      6   \n",
              "28 27 taxon_name           NC_STRING 0      4   \n",
              "29 28 time                 NC_DOUBLE 1     11   \n",
              "30 29 trajectory           NC_STRING 0      2   \n",
              "31 30 type                 NC_STRING 1      3   \n",
              "32 31 z                    NC_INT    1     10   "
            ]
          },
          "metadata": {}
        },
        {
          "output_type": "display_data",
          "data": {
            "text/html": [
              "<table class=\"dataframe\">\n",
              "<caption>A tibble: 21 × 4</caption>\n",
              "<thead>\n",
              "\t<tr><th scope=col>grid</th><th scope=col>ndims</th><th scope=col>variable</th><th scope=col>nvars</th></tr>\n",
              "\t<tr><th scope=col>&lt;chr&gt;</th><th scope=col>&lt;int&gt;</th><th scope=col>&lt;chr&gt;</th><th scope=col>&lt;int&gt;</th></tr>\n",
              "</thead>\n",
              "<tbody>\n",
              "\t<tr><td>D0</td><td>1</td><td>Ptt                 </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>comment             </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>count               </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>deploy_id           </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>ellipse_orientation </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>error_radius        </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>instrument          </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>lat                 </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>location_class      </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>lon                 </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>offset              </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>offset_orientation  </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>qartod_location_flag</td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>qartod_rollup_flag  </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>qartod_speed_flag   </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>qartod_time_flag    </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>semi_major_axis     </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>semi_minor_axis     </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>time                </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>type                </td><td>21</td></tr>\n",
              "\t<tr><td>D0</td><td>1</td><td>z                   </td><td>21</td></tr>\n",
              "</tbody>\n",
              "</table>\n"
            ],
            "text/markdown": "\nA tibble: 21 × 4\n\n| grid &lt;chr&gt; | ndims &lt;int&gt; | variable &lt;chr&gt; | nvars &lt;int&gt; |\n|---|---|---|---|\n| D0 | 1 | Ptt                  | 21 |\n| D0 | 1 | comment              | 21 |\n| D0 | 1 | count                | 21 |\n| D0 | 1 | deploy_id            | 21 |\n| D0 | 1 | ellipse_orientation  | 21 |\n| D0 | 1 | error_radius         | 21 |\n| D0 | 1 | instrument           | 21 |\n| D0 | 1 | lat                  | 21 |\n| D0 | 1 | location_class       | 21 |\n| D0 | 1 | lon                  | 21 |\n| D0 | 1 | offset               | 21 |\n| D0 | 1 | offset_orientation   | 21 |\n| D0 | 1 | qartod_location_flag | 21 |\n| D0 | 1 | qartod_rollup_flag   | 21 |\n| D0 | 1 | qartod_speed_flag    | 21 |\n| D0 | 1 | qartod_time_flag     | 21 |\n| D0 | 1 | semi_major_axis      | 21 |\n| D0 | 1 | semi_minor_axis      | 21 |\n| D0 | 1 | time                 | 21 |\n| D0 | 1 | type                 | 21 |\n| D0 | 1 | z                    | 21 |\n\n",
            "text/latex": "A tibble: 21 × 4\n\\begin{tabular}{llll}\n grid & ndims & variable & nvars\\\\\n <chr> & <int> & <chr> & <int>\\\\\n\\hline\n\t D0 & 1 & Ptt                  & 21\\\\\n\t D0 & 1 & comment              & 21\\\\\n\t D0 & 1 & count                & 21\\\\\n\t D0 & 1 & deploy\\_id            & 21\\\\\n\t D0 & 1 & ellipse\\_orientation  & 21\\\\\n\t D0 & 1 & error\\_radius         & 21\\\\\n\t D0 & 1 & instrument           & 21\\\\\n\t D0 & 1 & lat                  & 21\\\\\n\t D0 & 1 & location\\_class       & 21\\\\\n\t D0 & 1 & lon                  & 21\\\\\n\t D0 & 1 & offset               & 21\\\\\n\t D0 & 1 & offset\\_orientation   & 21\\\\\n\t D0 & 1 & qartod\\_location\\_flag & 21\\\\\n\t D0 & 1 & qartod\\_rollup\\_flag   & 21\\\\\n\t D0 & 1 & qartod\\_speed\\_flag    & 21\\\\\n\t D0 & 1 & qartod\\_time\\_flag     & 21\\\\\n\t D0 & 1 & semi\\_major\\_axis      & 21\\\\\n\t D0 & 1 & semi\\_minor\\_axis      & 21\\\\\n\t D0 & 1 & time                 & 21\\\\\n\t D0 & 1 & type                 & 21\\\\\n\t D0 & 1 & z                    & 21\\\\\n\\end{tabular}\n",
            "text/plain": [
              "   grid ndims variable             nvars\n",
              "1  D0   1     Ptt                  21   \n",
              "2  D0   1     comment              21   \n",
              "3  D0   1     count                21   \n",
              "4  D0   1     deploy_id            21   \n",
              "5  D0   1     ellipse_orientation  21   \n",
              "6  D0   1     error_radius         21   \n",
              "7  D0   1     instrument           21   \n",
              "8  D0   1     lat                  21   \n",
              "9  D0   1     location_class       21   \n",
              "10 D0   1     lon                  21   \n",
              "11 D0   1     offset               21   \n",
              "12 D0   1     offset_orientation   21   \n",
              "13 D0   1     qartod_location_flag 21   \n",
              "14 D0   1     qartod_rollup_flag   21   \n",
              "15 D0   1     qartod_speed_flag    21   \n",
              "16 D0   1     qartod_time_flag     21   \n",
              "17 D0   1     semi_major_axis      21   \n",
              "18 D0   1     semi_minor_axis      21   \n",
              "19 D0   1     time                 21   \n",
              "20 D0   1     type                 21   \n",
              "21 D0   1     z                    21   "
            ]
          },
          "metadata": {}
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "atn <- tidync(\"atn_trajectory_template.nc\")\n",
        "atn"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 243
        },
        "id": "npMk4zBGZQFc",
        "outputId": "a3801c17-4fb3-4451-c485-eee0a64d431c"
      },
      "execution_count": 21,
      "outputs": [
        {
          "output_type": "display_data",
          "data": {
            "text/plain": [
              "\n",
              "Data Source (1): atn_trajectory_template.nc ...\n",
              "\n",
              "Grids (1) <dimension family> : <associated variables> \n",
              "\n",
              "[1]   D0 : Ptt, comment, count, deploy_id, ellipse_orientation, error_radius, instrument, lat, location_class, lon, offset, offset_orientation, qartod_location_flag, qartod_rollup_flag, qartod_speed_flag, qartod_time_flag, semi_major_axis, semi_minor_axis, time, type, z    **ACTIVE GRID** ( 706  values per variable)\n",
              "\n",
              "Dimensions 1 (all active): \n",
              "  \n",
              "  dim   name  length   min   max start count  dmin  dmax unlim coord_dim \n",
              "  \u001b[3m\u001b[90m<chr>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<chr>\u001b[39m\u001b[23m  \u001b[3m\u001b[90m<dbl>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<dbl>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<dbl>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<int>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<int>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<dbl>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<dbl>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<lgl>\u001b[39m\u001b[23m \u001b[3m\u001b[90m<lgl>\u001b[39m\u001b[23m     \n",
              "\u001b[90m1\u001b[39m D0    obs      706     1   706     1   706     1   706 FALSE FALSE     "
            ]
          },
          "metadata": {}
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [],
      "metadata": {
        "id": "NwipxyhAZuPc"
      },
      "execution_count": null,
      "outputs": []
    }
  ]
}