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IoT-For-Beginners/translations/ja/2-farm/lessons/1-predict-plant-growth/code-notebook/gdd.ipynb

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"# 積算温度日数\n",
"\n",
"このートブックは、CSVファイルに保存された温度データを読み込み、分析します。温度をプロットし、各日の最高値と最低値を表示し、積算温度日数GDDを計算します。\n",
"\n",
"このノートブックを使用するには:\n",
"\n",
"* `temperature.csv` ファイルをこのノートブックと同じフォルダーにコピーしてください\n",
"* 上部の **▶︎ 実行** ボタンを使用してすべてのセルを実行してください。これにより、選択されたセルが実行され、次のセルに進みます。\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"以下のセルで、`base_temperature` を植物の基準温度に設定します。\n"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"base_temperature = 10"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"CSVファイルは現在、pandasを使用して読み込む必要があります\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"import pandas as pd\n",
"import matplotlib.pyplot as plt\n",
"\n",
"# Read the temperature CSV file\n",
"df = pd.read_csv('temperature.csv')"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"plt.figure(figsize=(20, 10))\n",
"plt.plot(df['date'], df['temperature'])\n",
"plt.xticks(rotation='vertical');"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"データが読み取られると、`date`列でグループ化され、各日付の最低気温と最高気温が抽出されます。\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# Convert datetimes to pure dates so we can group by the date\n",
"df['date'] = pd.to_datetime(df['date']).dt.date\n",
"\n",
"# Group the data by date so it can be analyzed by date\n",
"data_by_date = df.groupby('date')\n",
"\n",
"# Get the minimum and maximum temperatures for each date\n",
"min_by_date = data_by_date.min()\n",
"max_by_date = data_by_date.max()\n",
"\n",
"# Join the min and max temperatures into one dataframe and flatten it\n",
"min_max_by_date = min_by_date.join(max_by_date, on='date', lsuffix='_min', rsuffix='_max')\n",
"min_max_by_date = min_max_by_date.reset_index()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"標準的なGDD方程式を使用してGDDを計算できます\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"def calculate_gdd(row):\n",
" return ((row['temperature_max'] + row['temperature_min']) / 2) - base_temperature\n",
"\n",
"# Calculate the GDD for each row\n",
"min_max_by_date['gdd'] = min_max_by_date.apply (lambda row: calculate_gdd(row), axis=1)\n",
"\n",
"# Print the results\n",
"print(min_max_by_date[['date', 'gdd']].to_string(index=False))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "markdown",
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"source": [
"\n---\n\n**免責事項**: \nこの文書は、AI翻訳サービス [Co-op Translator](https://github.com/Azure/co-op-translator) を使用して翻訳されています。正確性を追求しておりますが、自動翻訳には誤りや不正確な部分が含まれる可能性があることをご承知ください。元の言語で記載された文書が正式な情報源とみなされるべきです。重要な情報については、専門の人間による翻訳を推奨します。この翻訳の使用に起因する誤解や誤解釈について、当方は一切の責任を負いません。\n"
]
}
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