找到本周内的第一个柱

Question

正在尝试为本周内的第一个日线创建表达式。每周一组蜡烛中的第一个柱应该是正确的，但我目前所掌握的是不正确的。

注意我不能使用此处指定的内置日期函数https://www.pinecoders.com/faq_and_code/#time-dates-and-sessions

thisweek = security(syminfo.tickerid, "W", barstate.islast, lookahead = barmerge.lookahead_on)
firstday = security(syminfo.tickerid, "D", barstate.isfirst, lookahead = barmerge.lookahead_on)


is_monday = thisweek and firstday

Answer 1

is_newbar(res) =>
    t = time(res)
    change(t) != 0 ? 1 : 0


firstcandle=is_newbar("D") and is_newbar("W")

var countD = 0
countD := is_newbar("W") ? 1 : is_newbar("D") ? countD + 1 : countD

is_monday = countD==1

找到本周内的第一个柱

Find the first bar within the current week

pine-script