HighestAll/ LowestAll is not considering the aggregation period

[EPrakash]

Hi all,

I am trying to draw previous day high, previous day low, last week high, last week low in the chart as 'Price Level'. [I know there is an option in thinkorswim to draw price level manually]. I wanted to draw this level in a study so that every time I input a new ticker, level will be automatically loaded.

def lastDayLow= low(period = 'Day')[1];
def lastDayHigh = high(period = 'Day')[1];
def lastWeekLow = low(period = 'Week')[1];
def lastWeekHigh = high(period = 'Week')[1];

plot dayLow = lastDayLow;
plot dayHigh = lastDayHigh;
plot weekLow = lastWeekLow;
plot weekHigh= lastWeekHigh;

When I tried this, I don't see price level line. I got a PaintingStrategy type - LINE. I tried with horizontal line and It draws on each bars. I did not get the horizontal line like 'Price Level' line.

Hence I used lowestAll like this,

plot dayLow = lowestAll(period = 'Day')[1]

I got the line as 'Price Level' line but it took the lowest price of the year though I have used the AggregationPeriod as 'Day'

Note:
When I try this - I draws the Price level line at 20.
plot a = 20;

So I thought of trying like this but it did not draw price level line
plot a = low(period="Day")[1];

Can someone help ?

 

[_Merch_Man_]

What is the timeframe of the chart you are trying to plot on?

 

[halcyonguy]

Hi all,

I am trying to draw previous day high, previous day low, last week high, last week low in the chart as 'Price Level'. [I know there is an option in thinkorswim to draw price level manually]. I wanted to draw this level in a study so that every time I input a new ticker, level will be automatically loaded.

def lastDayLow= low(period = 'Day')[1];
def lastDayHigh = high(period = 'Day')[1];
def lastWeekLow = low(period = 'Week')[1];
def lastWeekHigh = high(period = 'Week')[1];

plot dayLow = lastDayLow;
plot dayHigh = lastDayHigh;
plot weekLow = lastWeekLow;
plot weekHigh= lastWeekHigh;

When I tried this, I don't see price level line. I got a PaintingStrategy type - LINE. I tried with horizontal line and It draws on each bars. I did not get the horizontal line like 'Price Level' line.

Hence I used lowestAll like this,

plot dayLow = lowestAll(period = 'Day')[1]

I got the line as 'Price Level' line but it took the lowest price of the year though I have used the AggregationPeriod as 'Day'

Note:
When I try this - I draws the Price level line at 20.
plot a = 20;

So I thought of trying like this but it did not draw price level line
plot a = low(period="Day")[1];

Can someone help ?

here is a study that draws lines across the chart, at the desired levels.
notes are included in the code.

# prevday_levels_onalldays_01
# halcyonguy
# 21-08-12
#
# find high and low , of 2 previous periods, day and week.
# draw a horizontal line across the chart, at the 4 price levels.
# can change the offset , to look at older periods.
# 2 yellow lines, identify the 2 time periods.
# bubbles on the right, identify the lines.
#  the bubbles list the offset.

def na = double.nan;
input offset = 1;

def lastDayLow = low(period = "Day")[offset];
def lastDayHigh = high(period = "Day")[offset];
def lastWeekLow = low(period = "Week")[offset];
def lastWeekHigh = high(period = "Week")[offset];

# use highestall() to find data from the current time period
plot daylow = highestall( if (!isnan(close) and isnan(close[-1])) then lastDayLow else 0);
plot dayhigh = highestall( if (!isnan(close) and isnan(close[-1])) then lastDayhigh else 0);
plot weeklow = highestall( if (!isnan(close) and isnan(close[-1])) then lastweekLow else 0);
plot weekhigh = highestall( if (!isnan(close) and isnan(close[-1])) then lastweekhigh else 0);

daylow.setdefaultcolor(color.magenta);
dayhigh.setdefaultcolor(color.magenta);
weeklow.setdefaultcolor(color.light_green);
weekhigh.setdefaultcolor(color.light_green);

# -------------------------
# place bubbles after last bar, to id the lines
def futurebar = 6;
def x = (!isnan(close[futurebar]) and isnan(close[futurebar -1]));
addchartbubble(x, daylow, "Day[" + offset + "] Low", color.magenta, yes);
addchartbubble(x, dayhigh, "Day[" + offset + "] High", color.magenta, yes);
addchartbubble(x, weeklow, "Week[" + offset + "] Low", color.cyan, yes);
addchartbubble(x, weekhigh, "Week[" + offset + "] High", color.cyan, yes);

# ---------------------
# horz lines, during the time period
def vert = 0.004;
def dy = (!isnan(close(period = "Day")[-offset]) and isnan(close(period = "Day")[-(offset+1)]));
plot dyloline = if dy then (daylow * (1 - vert)) else na;
dyloline.setdefaultcolor(color.yellow);
dyloline.setlineweight(3);

def wk = (!isnan(close(period = "week")[-offset]) and isnan(close(period = "week")[-(offset+1)]));
plot wkhiline = if wk then (weekhigh * (1 + vert)) else na;
wkhiline.setdefaultcolor(color.yellow);
wkhiline.setlineweight(3);
#

below, i used an offset of 2, to look back 2 periods ago. ( 0 is the current period)

 

[halcyonguy]

when using highestall( x ) , it will search all of the values of x, for all of the bars, and return the highest value.
if you want it to find data from a specific time or specific data set, you can add a formula inside of the highestall() , to filter the data that is passed on to highestall().

in the following formula,
plot daylow = highestall( if (!isnan(close) and isnan(close[-1])) then lastDayLow else 0)

this part,
if (!isnan(close) and isnan(close[-1]))

tests if the current bar is the last bar.
if it is , then the if-then returns lastDayLow.
if not the last bar, then the if-then returns 0.

highestall() then processes all of the if-then formula results and finds the highest value. because most results will be 0, just the desired period has the desired value, and is returned.

 

[EPrakash]

What is the timeframe of the chart you are trying to plot on?

1 Year Day

 

[EPrakash]

here is a study that draws lines across the chart, at the desired levels.
notes are included in teh code.

# prevday_levels_onalldays_01
# halcyonguy
# 21-08-12
#
# find high and low , of 2 previous periods, day and week.
# draw a horizontal line across the chart, at the 4 price levels.
# can change the offset , to look at older periods.
# 2 yellow lines, identify the 2 time periods.
# bubbles on the right, identify the lines.
#  the bubbles list the offset.

def na = double.nan;
input offset = 1;

def lastDayLow = low(period = "Day")[offset];
def lastDayHigh = high(period = "Day")[offset];
def lastWeekLow = low(period = "Week")[offset];
def lastWeekHigh = high(period = "Week")[offset];

# use highestall() to find data from the current time period
plot daylow = highestall( if (!isnan(close) and isnan(close[-1])) then lastDayLow else 0);
plot dayhigh = highestall( if (!isnan(close) and isnan(close[-1])) then lastDayhigh else 0);
plot weeklow = highestall( if (!isnan(close) and isnan(close[-1])) then lastweekLow else 0);
plot weekhigh = highestall( if (!isnan(close) and isnan(close[-1])) then lastweekhigh else 0);

daylow.setdefaultcolor(color.magenta);
dayhigh.setdefaultcolor(color.magenta);
weeklow.setdefaultcolor(color.light_green);
weekhigh.setdefaultcolor(color.light_green);

# -------------------------
# place bubbles after last bar, to id the lines
def futurebar = 6;
def x = (!isnan(close[futurebar]) and isnan(close[futurebar -1]));
addchartbubble(x, daylow, "Day[" + offset + "] Low", color.magenta, yes);
addchartbubble(x, dayhigh, "Day[" + offset + "] High", color.magenta, yes);
addchartbubble(x, weeklow, "Week[" + offset + "] Low", color.cyan, yes);
addchartbubble(x, weekhigh, "Week[" + offset + "] High", color.cyan, yes);

# ---------------------
# horz lines, during the time period
def vert = 0.004;
def dy = (!isnan(close(period = "Day")[-offset]) and isnan(close(period = "Day")[-(offset+1)]));
plot dyloline = if dy then (daylow * (1 - vert)) else na;
dyloline.setdefaultcolor(color.yellow);
dyloline.setlineweight(3);

def wk = (!isnan(close(period = "week")[-offset]) and isnan(close(period = "week")[-(offset+1)]));
plot wkhiline = if wk then (weekhigh * (1 + vert)) else na;
wkhiline.setdefaultcolor(color.yellow);
wkhiline.setlineweight(3);
#

below, i used an offset of 2, to look back 2 periods ago. ( 0 is the current period)

Thank you. That works