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Excel绘制四叶草花瓣图|猪爸爸学Excel图表

  • 2026-08-25 15:10:50
Excel绘制四叶草花瓣图|猪爸爸学Excel图表

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本节动图中,鼠标左键为黄色,右键为红色;
这一节是猪爸爸学excel图表之花瓣图
主要是受前阵子沸沸扬扬的“奶茶四叶草事件”启发,所以我想尝试在Excel中画出四叶草花纹图样。有兴趣拿文件去练下手试试的,在文末获取哈。
理论上来讲,只要有足够的数据点,那么,利用平滑曲线图,就可以形成闭环,理论上来讲,可以画出任意我们想要的形状来的。
好了,思路有了,接下来,我就只能求助AI了,因为这些数据点,要如何利用数学知识求出来,臣妾做不到呀。
今天是一篇我自己也搞不懂原理的图表,花瓣图。
其原理主要是用极坐标方程生成花瓣,相关三角函数
r(θ)=a+b⋅cos(k⋅θ)
之后再转换成Excel能够绘制的直角坐标:
x = r × cos(θ)
y = r × sin(θ)
之后呢,θ 从 0 扫到 2π,取 1000 个点,平滑连线就是一朵花。
之后呢,还需要另外一组数据,用于画中心的圆,说实在的,其实直接画个圆形放进去就好了,只不过既然都想出用Excel画四叶草这么奇特的做法了,那也就不差再多一个圆形系列了。
关于中心圆,相关思路和公式是这样子的。圆心在 (0,0),半径 R
参数 t 从 0~2π,步长 0.01
x=R*cos(t),y=R*sin(t)。
这个是我通过AI沟通之后给出的方案哈,说实在的,我基本看不懂了,只能看懂一点点,初中高中所学的,都早已经还给数学老师了。
这些数据准备好之后,就很简单了,只需要先添加花瓣系列为【带平滑线的散点图】,之后再添加中心圆系列,同样是【带平滑线的散点图】,之后通过设置窗格的【填充与线条】选项卡,分别设置其【线条】为【实线】,设置【颜色】以及【宽度】等,搞定,收工。
当然,花瓣的角,太圆滑了,那没办法,我也不敢画得太像了呀……
好啦,咱其实没啥怕的……最根本原因是,如果边角要画得更像些,那么公式又得做修改,哎,太麻烦了,就这样子好了,画着玩而已……
因不少小伙伴想要课件跟着练习,故提供本文练习图表课件下载(仅提供部分文章课件不包含图表哟):
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  1. CONNECT:[ UseTime:0.000592s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000751s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.020153s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.024669s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000754s ]
  6. SELECT * FROM `set` [ RunTime:0.059004s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000692s ]
  8. SELECT * FROM `article` WHERE `id` = 550856 LIMIT 1 [ RunTime:0.065663s ]
  9. UPDATE `article` SET `lasttime` = 1787674688 WHERE `id` = 550856 [ RunTime:0.013569s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000482s ]
  11. SELECT * FROM `article` WHERE `id` < 550856 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.109683s ]
  12. SELECT * FROM `article` WHERE `id` > 550856 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.028369s ]
  13. SELECT * FROM `article` WHERE `id` < 550856 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.125619s ]
  14. SELECT * FROM `article` WHERE `id` < 550856 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.054049s ]
  15. SELECT * FROM `article` WHERE `id` < 550856 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.342469s ]
0.990597s