{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Searching datasets\n",
    "\n",
    "Erddapy can wrap the same form-like search capabilities of ERDDAP with the\n",
    "_search_for_ keyword.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:45.474161Z",
     "iopub.status.busy": "2026-03-06T15:44:45.473988Z",
     "iopub.status.idle": "2026-03-06T15:44:45.848336Z",
     "shell.execute_reply": "2026-03-06T15:44:45.847559Z"
    }
   },
   "outputs": [],
   "source": [
    "from erddapy import ERDDAP\n",
    "\n",
    "e = ERDDAP(\n",
    "    server=\"https://pae-paha.pacioos.hawaii.edu/erddap\",\n",
    "    protocol=\"griddap\",\n",
    ")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Single word search.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:45.850251Z",
     "iopub.status.busy": "2026-03-06T15:44:45.850072Z",
     "iopub.status.idle": "2026-03-06T15:44:46.097321Z",
     "shell.execute_reply": "2026-03-06T15:44:46.096571Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0           etopo1_bedrock\n",
       "1    etopo1_bedrock_lon360\n",
       "2               etopo1_ice\n",
       "3        etopo1_ice_lon360\n",
       "4                   etopo5\n",
       "5            etopo5_lon180\n",
       "Name: Dataset ID, dtype: str"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import pandas as pd\n",
    "\n",
    "search_for = \"etopo\"\n",
    "\n",
    "url = e.get_search_url(search_for=search_for, response=\"csv\")\n",
    "\n",
    "pd.read_csv(url)[\"Dataset ID\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Filtering the search with extra words.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:46.127571Z",
     "iopub.status.busy": "2026-03-06T15:44:46.127337Z",
     "iopub.status.idle": "2026-03-06T15:44:46.443669Z",
     "shell.execute_reply": "2026-03-06T15:44:46.442789Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0           etopo5\n",
       "1    etopo5_lon180\n",
       "Name: Dataset ID, dtype: str"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "search_for = \"etopo5\"\n",
    "\n",
    "url = e.get_search_url(search_for=search_for, response=\"csv\")\n",
    "\n",
    "pd.read_csv(url)[\"Dataset ID\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Filtering the search with words that should **not** be found.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:46.445293Z",
     "iopub.status.busy": "2026-03-06T15:44:46.445120Z",
     "iopub.status.idle": "2026-03-06T15:44:46.968929Z",
     "shell.execute_reply": "2026-03-06T15:44:46.968105Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0           etopo5\n",
       "1    etopo5_lon180\n",
       "Name: Dataset ID, dtype: str"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "search_for = \"etopo5 -lon360\"\n",
    "\n",
    "url = e.get_search_url(search_for=search_for, response=\"csv\")\n",
    "\n",
    "pd.read_csv(url)[\"Dataset ID\"]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Quoted search or \"phrase search,\" first let us try the unquoted search.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:46.970525Z",
     "iopub.status.busy": "2026-03-06T15:44:46.970341Z",
     "iopub.status.idle": "2026-03-06T15:44:47.482100Z",
     "shell.execute_reply": "2026-03-06T15:44:47.481272Z"
    },
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "68"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "search_for = \"ocean bathymetry\"\n",
    "\n",
    "url = e.get_search_url(search_for=search_for, response=\"csv\")\n",
    "\n",
    "len(pd.read_csv(url)[\"Dataset ID\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Too many datasets because wind, speed, and wind speed are matched. Now let's use\n",
    "the quoted search to reduce the number of results to only wind speed.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:47.483754Z",
     "iopub.status.busy": "2026-03-06T15:44:47.483589Z",
     "iopub.status.idle": "2026-03-06T15:44:47.717179Z",
     "shell.execute_reply": "2026-03-06T15:44:47.716440Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "6"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "search_for = '\"ocean bathymetry\"'\n",
    "\n",
    "url = e.get_search_url(search_for=search_for, response=\"csv\")\n",
    "\n",
    "len(pd.read_csv(url)[\"Dataset ID\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Another common search operation would be to search multiple servers instead of\n",
    "only one. In erddapy we can achieve that with `search_servers`:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:44:47.718824Z",
     "iopub.status.busy": "2026-03-06T15:44:47.718661Z",
     "iopub.status.idle": "2026-03-06T15:45:17.822479Z",
     "shell.execute_reply": "2026-03-06T15:45:17.821555Z"
    }
   },
   "outputs": [],
   "source": [
    "from erddapy.multiple_server_search import search_servers\n",
    "\n",
    "df = search_servers(\n",
    "    query=\"glider\",\n",
    "    servers_list=None,\n",
    "    parallel=True,\n",
    "    protocol=\"tabledap\",\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:45:17.824049Z",
     "iopub.status.busy": "2026-03-06T15:45:17.823888Z",
     "iopub.status.idle": "2026-03-06T15:45:17.826936Z",
     "shell.execute_reply": "2026-03-06T15:45:17.826191Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "There are 6493 entries in this search!\n"
     ]
    }
   ],
   "source": [
    "print(f\"There are {len(df)} entries in this search!\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "These are the servers that have glider data according to our query.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:45:17.828494Z",
     "iopub.status.busy": "2026-03-06T15:45:17.828306Z",
     "iopub.status.idle": "2026-03-06T15:45:17.833525Z",
     "shell.execute_reply": "2026-03-06T15:45:17.832726Z"
    },
    "scrolled": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'http://erddap.cencoos.org/erddap/',\n",
       " 'http://erddap.secoora.org/erddap/',\n",
       " 'http://tds.marine.rutgers.edu/erddap/',\n",
       " 'https://basin.ceoe.udel.edu/erddap/',\n",
       " 'https://coastwatch.pfeg.noaa.gov/erddap/',\n",
       " 'https://cwcgom.aoml.noaa.gov/erddap/',\n",
       " 'https://data.cioospacific.ca/erddap/',\n",
       " 'https://data.pmel.noaa.gov/pmel/erddap/',\n",
       " 'https://erddap.bco-dmo.org/erddap/',\n",
       " 'https://erddap.emodnet-physics.eu/erddap/',\n",
       " 'https://erddap.griidc.org/erddap/',\n",
       " 'https://erddap.observations.voiceoftheocean.org/erddap/',\n",
       " 'https://erddap.ondeckdata.com/erddap/',\n",
       " 'https://erddap.sensors.ioos.us/erddap/',\n",
       " 'https://gliders.ioos.us/erddap/',\n",
       " 'https://linkedsystems.uk/erddap/',\n",
       " 'https://pae-paha.pacioos.hawaii.edu/erddap/',\n",
       " 'https://polarwatch.noaa.gov/erddap/',\n",
       " 'https://spraydata.ucsd.edu/erddap/',\n",
       " 'https://upwell.pfeg.noaa.gov/erddap/',\n",
       " 'https://www.ifremer.fr/erddap/',\n",
       " 'https://www.smartatlantic.ca/erddap/'}"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "set(df[\"Server url\"])"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "One way to reduce is to search a subset of the servers with the `servers_list`\n",
    "argument. We can also use it to search servers that are not part of the awesome\n",
    "ERDDAP list (https://github.com/IrishMarineInstitute/awesome-erddap).\n",
    "\n",
    "One can also perform an advanced search with ERDDAP constraints\n",
    "`advanced_search_servers`.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-03-06T15:45:17.835137Z",
     "iopub.status.busy": "2026-03-06T15:45:17.834963Z",
     "iopub.status.idle": "2026-03-06T15:45:18.288238Z",
     "shell.execute_reply": "2026-03-06T15:45:18.287483Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Title</th>\n",
       "      <th>Institution</th>\n",
       "      <th>Dataset ID</th>\n",
       "      <th>Server url</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>Coastal Endurance: Oregon Inshore Surface Moor...</td>\n",
       "      <td>Ocean Observatories Initiative (OOI)</td>\n",
       "      <td>ooi-ce01issm-rid16-02-flortd000</td>\n",
       "      <td>https://erddap.dataexplorer.oceanobservatories...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>Coastal Endurance: Oregon Inshore Surface Moor...</td>\n",
       "      <td>Ocean Observatories Initiative (OOI)</td>\n",
       "      <td>ooi-ce01issm-rid16-03-ctdbpc000</td>\n",
       "      <td>https://erddap.dataexplorer.oceanobservatories...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>Coastal Endurance: Oregon Inshore Surface Moor...</td>\n",
       "      <td>Ocean Observatories Initiative (OOI)</td>\n",
       "      <td>ooi-ce01issm-rid16-03-dostad000</td>\n",
       "      <td>https://erddap.dataexplorer.oceanobservatories...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>Coastal Endurance: Oregon Inshore Surface Moor...</td>\n",
       "      <td>Ocean Observatories Initiative (OOI)</td>\n",
       "      <td>ooi-ce01issm-rid16-07-nutnrb000</td>\n",
       "      <td>https://erddap.dataexplorer.oceanobservatories...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>Coastal Endurance: Oregon Inshore Surface Moor...</td>\n",
       "      <td>Ocean Observatories Initiative (OOI)</td>\n",
       "      <td>ooi-ce01issm-rid16-06-phsend000</td>\n",
       "      <td>https://erddap.dataexplorer.oceanobservatories...</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                                               Title  \\\n",
       "0  Coastal Endurance: Oregon Inshore Surface Moor...   \n",
       "1  Coastal Endurance: Oregon Inshore Surface Moor...   \n",
       "2  Coastal Endurance: Oregon Inshore Surface Moor...   \n",
       "3  Coastal Endurance: Oregon Inshore Surface Moor...   \n",
       "4  Coastal Endurance: Oregon Inshore Surface Moor...   \n",
       "\n",
       "                            Institution                       Dataset ID  \\\n",
       "0  Ocean Observatories Initiative (OOI)  ooi-ce01issm-rid16-02-flortd000   \n",
       "1  Ocean Observatories Initiative (OOI)  ooi-ce01issm-rid16-03-ctdbpc000   \n",
       "2  Ocean Observatories Initiative (OOI)  ooi-ce01issm-rid16-03-dostad000   \n",
       "3  Ocean Observatories Initiative (OOI)  ooi-ce01issm-rid16-07-nutnrb000   \n",
       "4  Ocean Observatories Initiative (OOI)  ooi-ce01issm-rid16-06-phsend000   \n",
       "\n",
       "                                          Server url  \n",
       "0  https://erddap.dataexplorer.oceanobservatories...  \n",
       "1  https://erddap.dataexplorer.oceanobservatories...  \n",
       "2  https://erddap.dataexplorer.oceanobservatories...  \n",
       "3  https://erddap.dataexplorer.oceanobservatories...  \n",
       "4  https://erddap.dataexplorer.oceanobservatories...  "
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from erddapy.multiple_server_search import advanced_search_servers\n",
    "\n",
    "min_time = \"2017-07-01T00:00:00Z\"\n",
    "max_time = \"2017-09-01T00:00:00Z\"\n",
    "min_lon, max_lon = -127, -123.75\n",
    "min_lat, max_lat = 43, 48\n",
    "standard_name = \"sea_water_practical_salinity\"\n",
    "\n",
    "\n",
    "kw = {\n",
    "    \"standard_name\": standard_name,\n",
    "    \"min_lon\": min_lon,\n",
    "    \"max_lon\": max_lon,\n",
    "    \"min_lat\": min_lat,\n",
    "    \"max_lat\": max_lat,\n",
    "    \"min_time\": min_time,\n",
    "    \"max_time\": max_time,\n",
    "    \"cdm_data_type\": \"timeseries\",  # let's exclude AUV's tracks\n",
    "}\n",
    "\n",
    "\n",
    "servers = {\n",
    "    \"ooi\": \"https://erddap.dataexplorer.oceanobservatories.org/erddap/\",\n",
    "    \"ioos\": \"https://erddap.sensors.ioos.us/erddap/\",\n",
    "}\n",
    "\n",
    "\n",
    "df = advanced_search_servers(servers_list=servers.values(), **kw)\n",
    "\n",
    "df.head()"
   ]
  }
 ],
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