Feng Yifei’s notebooks | Observable

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Feng Yifei’s notebooks | Observable

Feng Yifei

@fengyfei

Let's build a better world, together.

105

15

8

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Mar 27, 2025

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Oct 18, 2023

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Apr 2, 2023

1

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Feb 7, 2023

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Mar 8, 2022

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Paper - Unit IV

Mar 3, 2022

2

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Paper - Unit III

Mar 8, 2022

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Paper - Unit II

Mar 5, 2022

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Mar 8, 2022

2

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Feb 23, 2022

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Plants & Zombies

Feb 26, 2022

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Feb 23, 2022

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Feb 19, 2022

1

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Nov 12, 2021

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Triangle & Circle

Nov 4, 2021

1

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Oct 31, 2021

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Oct 28, 2021

2

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Points in the Triangle

Oct 29, 2021

1

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Basic Geometric Theory

Oct 29, 2021

1

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Vector - Circles

Oct 14, 2021

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Oct 14, 2021

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Pixel - Color Inversion

Oct 13, 2021

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Pixel - Image Inversion

Oct 12, 2021

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Pixel - Color Picker

Oct 12, 2021

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Circle in Pixels

Jan 11, 2022

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Feb 18, 2022

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Oct 29, 2021

3

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Translate & Scale

Oct 12, 2021

1

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Sep 22, 2021

1

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Sep 19, 2021

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Javascript 基础知识

Oct 18, 2023

3

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Apr 30, 2021

1

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Profit Calculate

Jun 17, 2021

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Electricity Consumption of 2020

Apr 24, 2021

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Renewable Energy

Apr 21, 2021

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Nuclear Power Station

Apr 19, 2021

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Cartesian Coordinate System

Apr 19, 2021

1

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Apr 15, 2021

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Polar Coordinates System

Apr 20, 2021

2

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Cascaded Map of China

Apr 17, 2021

2