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python nan 在 prasertcbs Youtube 的最讚貼文

prasertcbs By prasertcbs

2018-06-06 16:43:29 有 1,400 人看過 有 17 人喜歡
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การใช้ฟังก์ชัน count เพื่อแสดงความถี่ใน pivot table
การแสดงค่า NaN ด้วยค่าที่กำหนดใน pivot table
การแสดงจำนวนเลขหลังจุดทศนิยมใน pivot table ด้วยฟังก์ชัน round()
ดาวน์โหลด Jupyter Notebook ที่ใช้ในคลิปได้ที่: https://goo.gl/MHLbth
ดาวน์โหลด Excel ไฟล์ที่ใช้ในคลิปได้ที่: https://goo.gl/8aorvA
เชิญสมัครเป็นสมาชิกของช่องนี้ได้ที่ ► https://www.youtube.com/subscription_center?add_user=prasertcbs
playlist สอน Python สำหรับ data science ► https://www.youtube.com/playlist?list=PLoTScYm9O0GFVfRk_MmZt0vQXNIi36LUz
playlist สอน Jupyter Notebook ► https://www.youtube.com/watch?v=f3CLdRl-zyQ&list=PLoTScYm9O0GErrygsfQtDtBT4CloRkiDx
playlist สอนภาษาไพธอน Python เบื้องต้น ► https://www.youtube.com/watch?v=DI7eca5Kzdc&list=PLoTScYm9O0GH4YQs9t4tf2RIYolHt_YwW
playlist สอนภาษาไพธอน Python การเขียนโปรแกรมเชิงวัตถุ (OOP: Object-Oriented Programming) ► https://www.youtube.com/watch?v=4bVBSluxJNI&list=PLoTScYm9O0GF_wbU-7layLaSuHjzhIRc9
playlist สอน Python 3 GUI ► https://www.youtube.com/playlist?list=PLoTScYm9O0GFB1Y3cCmb9aPD5xRB1T11y
playlist สอนการใช้งานโปรแกรม R: https://www.youtube.com/watch?v=UaEtZ5XzVeE&list=PLoTScYm9O0GGSiUGzdWbjxIkZqEO-O6qZ
playlist สอนการเขียนโปรแกรมภาษา R: https://www.youtube.com/playlist?list=PLoTScYm9O0GF6qjrRuZFSHdnBXD2KVICp

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สอนการใช้งาน Excel, VBA, Macro, Word, PowerPoint, SQL, การเขียนโปรแกรมด้วยภาษาต่าง ๆ Python, PHP, Java, C, C# พร้อมตัวอย่างการประยุกต์ การทำเหมืองข้อมูล Data mining, Machine learning การใช้โปรแกรม R, ggplot2 สื่อการสอนโดย รศ.ดร. ประเสริฐ คณาวัฒนไชย ​คณะพาณิชศาสตร์และการบัญชี จุฬาลงกรณ์มหาวิทยาลัย Assoc.Prof. Dr. Prasert Kanawattanachai Chulalongkorn Business School
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社群媒體上有些相關的討論：

python nan 在 Check for NaN Values in Python - YouTube 的推薦與評價

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Full Tutorial: https://blog.finxter.com/check-for- nan -values-in- python / Python Infinity Tutorial: ... ... <看更多>

python nan 在 Numpy is not setting properly nan values: arr[arr== 0] = np.nan 的推薦與評價

Your arrays are not all nan. It prints nan because that is how np.mean and np.std work, if the array contains any nans, the result will be ... ... <看更多>

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#4. How can I check for NaN values? - python - Stack Overflow

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#41. How to check nan in Python - Javatpoint

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2012-01-01 01:00:00 32.00 nan nan nan nan 2012-01-01 02:00:00 32.67 32.00 nan nan nan 2012-01-01 03:00:00 30.00 32.67 32.00 nan nan 2012-01-01 04:00:00 ...

#93. How can I remove NaN values from a matrix? - MathWorks

Learn more about removing, nan, matrix, column, row. ... However, I need to remove the NaN values that are in my data like Columns = [10;0.04500;0;NaN;NaN] ...

#94. Python for Excel - 第 110 頁 - Google 圖書結果

... 1 In [77]: df1.join(df2, how="left") Out[77]: 0 A B 1 2 3 4 5 6 C D NaN NaN ... how="right") Out[78]: D 1 A B C 3.0 4.0 10 NaN NaN 30 20 3 40 In [79]: ...

#95. Python Data Science - 第 246 頁 - Google 圖書結果

However, in Python, particularly when using the pandas library, ... 0 1 2 3 4 0 0 2 4 NaN NaN 1 8 10 Notes When performing arithmetic operations using ...

#96. 東京大學資料科學家養成全書：使用Python動手學習資料分析

成批刪除若要將存在 NaN 的列全部移除,可使用 dropna 方法。這稱為成批刪除(list-wise deletion)。下面對於先前的資料套用 dropna 方法,抽出所有行均有資料的列。

#97. Data Visualization with Python and JavaScript

If we look at the count of the born_in columns, it doesn't show any missing rows, which it would were any fields missing or NaN (not a number): In [0]: ...

#98. Geographic Data Science with Python - 第 63 頁 - Google 圖書結果

... osmid 886196069 35.670087 X street_count highway 3 NaN 3 NaN 34 3 NaN NaN 3 NaN 139.694333 886196073 35.669725 139.699508 886196100 35.669442 139.699708 ...