Help with volume indicator

[ProfitTaker]

I'm new to coding and would appreciate some assistance. I'm trying to create an indicator that notifies me when specific volume patterns appear. I will attach images for the patterns I need alerts for. Up arrow when the last candle is green and down arrow when the last candle is red. I've been trying with no success, any guidance is appreciated.

<volume [2] > volume [1] and volume [3] < volume[2]>

 

[halcyonguy]

I'm new to coding and would appreciate some assistance. I'm trying to create an indicator that notifies me when specific volume patterns appear. I will attach images for the patterns I need alerts for. Up arrow when the last candle is green and down arrow when the last candle is red. I've been trying with no success, any guidance is appreciated.

<volume [2] > volume [1] and volume [3] < volume[2]>

your offset numbers are off by 1. the current bar is 0 , not 1

# volbars3_pattern_arrow_00

#https://usethinkscript.com/threads/help-with-volume-indicator.14538/

def na = double.nan;
def bn = barnumber();

def isup = close > open;
def v = volume;

def up = v[0] < v[1] and v[1] > v[2] and isup;
def dwn = v[0] < v[1] and v[1] > v[2] and !isup;

def vert = 0.002;
plot zup = if up then low*(1-vert) else na;
zup.SetPaintingStrategy(PaintingStrategy.ARROW_UP);
zup.SetDefaultColor(Color.green);
zup.setlineweight(3);
zup.hidebubble();

plot zdwn = if dwn then high*(1+vert) else na;
zdwn.SetPaintingStrategy(PaintingStrategy.ARROW_down);
zdwn.SetDefaultColor(Color.red);
zdwn.setlineweight(3);
zdwn.hidebubble();

# =====================================
# Sound.Ding,  higher , up sound
# Sound.Bell,  lower , down sound
alert(up, "crossed up" ,alert.BAR, sound.DING);
alert(dwn, "crossed down" ,alert.BAR, sound.bell);
# =====================================
#

 

[ProfitTaker]

your offset numbers are off by 1. the current bar is 0 , not 1

# volbars3_pattern_arrow_00

#https://usethinkscript.com/threads/help-with-volume-indicator.14538/

def na = double.nan;
def bn = barnumber();

def isup = close > open;
def v = volume;

def up = v[0] < v[1] and v[1] > v[2] and isup;
def dwn = v[0] < v[1] and v[1] > v[2] and !isup;

def vert = 0.002;
plot zup = if up then low*(1-vert) else na;
zup.SetPaintingStrategy(PaintingStrategy.ARROW_UP);
zup.SetDefaultColor(Color.green);
zup.setlineweight(3);
zup.hidebubble();

plot zdwn = if dwn then high*(1+vert) else na;
zdwn.SetPaintingStrategy(PaintingStrategy.ARROW_down);
zdwn.SetDefaultColor(Color.red);
zdwn.setlineweight(3);
zdwn.hidebubble();

# =====================================
# Sound.Ding,  higher , up sound
# Sound.Bell,  lower , down sound
alert(up, "crossed up" ,alert.BAR, sound.DING);
alert(dwn, "crossed down" ,alert.BAR, sound.bell);
# =====================================
#

@halcyonguy Thank you so much!