[問題] 如何建構這個問題的程式
[問題類型]:
程式諮詢(我想用R 做某件事情，但是我不知道要怎麼用R 寫出來)
[軟體熟悉度]:
使用者(已經有用R 做過不少作品)
[問題敘述]:
我目前在想要畫一筆資料的趨勢圖
但這個資料有21個項目 也就是說畫成圖有21條線
為了圖的清楚與判讀 我決定"最多"改成畫5條線
也就是說 我的圖可以畫1~5條 隨意選
而要畫得項目則由使用操作者決定要哪些
譬如 時間 項目1 項目2 ..... 項目21
1 A1 B1 U1
2 A2 B2 U2
... ... ... ...
100 A100 B100 U100
資料時間不只一百筆
另外 項目A~U都是數字
譬如我可以選 時間 49:70 畫 B G H F四條線在這段時間的趨勢
但是我現在對於這問題完全找不到下手點
因為以前我都用先建成矩陣 再畫圖
可是由於不一定畫5條 矩陣維度就會變
而且又不知道使用者會想畫哪幾項目
想請問板上高手的意見
[程式範例]:
構想中 暫無
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