如何用plot及tl_new畫壓力及支撐線?

TL_SetColor(TL_ID,TL_Color) Parameters

TL_ID - a numerical expression specifying the trendline ID number

TL_Color - an expression specifying the trendline color

Trendline color can be specified by a numerical expression representing an RGB color number or a legacy color value, or by one of 17 base color words.

Notes

A trendline-specific ID number is returned by TL_New when the trendline is created.

請問Brian大

以上是tl_setcolor指令說明,假設我每日在開盤畫了四根TL,要怎麼知道這四根TL的TL_ID號碼各是多少?

另外如果想在盤中畫出當日盤中最高價水平線,但最高價是動態的,如果最高價破前高時,要將之前舊的最高價水平線刪除,再畫出新的最高價水平線,請問要如何刪除舊的最高價水平線?

 感謝!!