I am trying to perform a query where I want to retrieve all the items that have height and width between 2 defined values like this:
let queryExpression = AWSDynamoDBQueryExpression()
queryExpression.filterExpression = ":widthSmall < #width < :width AND :heightSmall < #height < :height"
queryExpression.keyConditionExpression = "#addedByType = :addedByType"
queryExpression.expressionAttributeNames = ["#addedByType": "addedByType", "#width": "widthSmall","#height": "heightSmall","#width": "width","#height": "height"]
queryExpression.expressionAttributeValues = [":addedByType": "APPUSER", ":widthSmall": 50, ":heightSmall": 50, ":width": 100, ":height": 100]
queryExpression.scanIndexForward = false
queryExpression.limit = 200
This though throw the following error because of the expressionAttributeNames
fatal error: Dictionary literal contains duplicate keys
What would be the correct way to check so ?
Ok so after quite a bit of trial and error I have figured out what I was doing wrong and came with the following result:
queryExpression.filterExpression = ":widthSmall < #width1 AND #width < :width AND :heightSmall < #height1 AND #height < :height"
queryExpression.keyConditionExpression = "#addedByType = :addedByType"
queryExpression.expressionAttributeNames = ["#addedByType": "addedByType", "#width1": "width","#height1": "height", "#width": "width", "#height": "height"]
queryExpression.expressionAttributeValues = [":addedByType": "APPUSER", ":widthSmall": 50, ":heightSmall": 50, ":width": 101, ":height": 101]
The problem was that I was referencing twice the same key in the dictionary
Related
Fair value gap coding in pinescript?
I have tried to write code but unable to add more functions on it.
//#version=5
indicator('Fair Value Gap Akash Mehto', overlay=true)
boxLength = input.int(title='boxLength', defval=6, group='General', inline='General')
boxTransparency = input.int(title='boxTransparency', defval=85, group='General', inline='General')
bullishFvg = low[0] > high[2]
bearishFvg = high[0] < low[2]
if bullishFvg
box.new(left=bar_index - 2, top=low[0], right=bar_index + boxLength, bottom=high[2], bgcolor=color.new(color.rgb(28, 202, 121), boxTransparency), text="FVG", text_size = "tiny", text_halign = text.align_right, text_color = color.green, border_color=color.new(color.green, boxTransparency))
if bearishFvg
box.new(left=bar_index - 2, top=low[2], right=bar_index + boxLength, bottom=high[0], bgcolor=color.new(color.rgb(240, 46, 46), boxTransparency), text="FVG", text_size = "tiny", text_halign = text.align_right, text_color = color.red, border_color=color.new(color.green, boxTransparency))
In below code, I am getting syntax error for plotshape and several for label. Even for max / min i am getting too many arguments. I used label to get the value from intraburst formula as text. Will need help to resolve these.
//#version=4
study("Intraburst", overlay=true)
truemove = abs(open[2] - close) dayTrueHigh = max(high[1], high,
close[2]) dayTrueLow = min(low[1], low, close[2]) dayTrueRange =
dayTrueHigh - dayTrueLow intraburstLevel = truemove / dayTrueRange *
100
if intraburstLevel > 30
plotshape(series=intraburstLevel, text="ON", style=shape.circle, location=location.abovebar, color=color.green, size=size.normal) else
plotshape(series=intraburstLevel, text="OFF", style=shape.circle, location=location.abovebar, color=color.red, size=size.normal)
label = label.new(bar_index=0, yloc=y_top, xloc=xloc.bar_index,
text=tostring(intraburstLevel, "0.00"), size=size.large,
color=color.black) label.location = location.top label.y = y_top
label.x = x_right label.text = tostring(intraburstLevel, "0.00")
In series, use a ternary
Something like that:
plotshape(
intraburstLevel > 30 ? intraburstLevel : na,
text = "ON",
style = shape.circle,
location = location.abovebar,
color = color.green,
size = size.normal)
plotshape(
intraburstLevel <= 30 ? intraburstLevel : na,
text = "OFF",
style = shape.circle,
location = location.abovebar,
color = color.red,
size = size.normal)
and the label
label.new(
bar_index,
close,
tostring (intraburstLevel, "##.00"),
color = color.black,
textcolor = color.white)
On checking for condition gap(high-low) > 0.1%(which is met multiple times), the label only gets
rendered ONCE (instead of on relevant bars within 25 bar lookback).
Plz provide a solution.
CODE :
Historical Bars
//#version=5
indicator("PriceMomemtum",overlay = true,max_bars_back = 25)
gap = (math.abs(high - low)/low ) * 100
//var gap = (math.abs(high - low)/low ) * 100
if gap > 0.1
var lbl = label.new(x = bar_index,y = na , text = na ,text_font_family = font.family_default ,xloc = xloc.bar_index,yloc =yloc.abovebar,style = label.style_arrowdown ,textcolor = color.white,size =size.small,textalign = text.align_left,tooltip = na)
label.set_text(lbl,str.tostring(gap,"#.00")+"%")
label.set_xy(lbl,bar_index,high )
Realtime Bars
//#version=5
indicator("PriceMomemtum",overlay = true,max_bars_back = 25)
if barstate.isrealtime
gap = (math.abs(high - low)/low ) * 100
//var gap = (math.abs(high - low)/low ) * 100
if gap > 0.1
var lbl = label.new(x = bar_index,y = na , text = na ,text_font_family = font.family_default ,xloc = xloc.bar_index,yloc =yloc.abovebar,style = label.style_arrowdown ,textcolor = color.white,size =size.small,textalign = text.align_left,tooltip = na)
label.set_text(lbl,str.tostring(gap,"#.00")+"%")
label.set_xy(lbl,bar_index,high )
alert(str.tostring(time(syminfo.timezone)) + "(PriceMomentum)", alert.freq_once_per_bar)
Have you tried defining "lbl" variable without "var"?
result
clc
URL = 'http://time.is/';
key1 = 'title="Click for calendar">';
key2 = '</h2>';
data = urlread(URL);
start_ind = strfind(data,key1);
data1 = data(start_ind:end);
off_stop_ind = strfind(data1,key2);
current_date =data(start_ind+numel(key1):start_ind + off_stop_ind(1)-2)
date_split = strsplit(current_date,',')
current_date1 = datestr(strcat(date_split(2),date_split(3)))
I got this error how to fix it
Index exceeds the number of array elements. Index must not exceed 0.
Error in date (line 10)
current_date =data(start_ind+numel(key1):start_ind + off_stop_ind(1)-2)
I am getting this as an orange error - not sure what I have done wrong or whether this error is the reason that the code doesn't plot. I am brand new to Pine-script and any assistance would be invaluable. Many thanks in advance Alastair
//#version=5
indicator("PCY TEST4")
//Get User Inputs
fast_length = input(title="Fast Length", defval=12)
slow_length = input(title="Slow Length", defval=26)
src = input(title="Source", defval=close)
signal_length = input.int(title="Signal Smoothing", minval = 1, maxval = 50, defval = 9)
sma_source = input.string(title="Oscillator MA Type", defval="EMA", options=["SMA", "EMA"])
sma_signal = input.string(title="Signal Line MA Type", defval="EMA", options=["SMA", "EMA"])
//Variables
a = 0.33
PCY = 0.0
PCYi = 0.0
// Calculating
fast_ma = sma_source == "SMA" ? ta.sma(src, fast_length) : ta.ema(src, fast_length)
slow_ma = sma_source == "SMA" ? ta.sma(src, slow_length) : ta.ema(src, slow_length)
macd = fast_ma - slow_ma
minMacd=0.0
for i = 0 to (signal_length[1])
minMacd := ta.min(macd)
maxMacd=0.0
for i = 0 to (signal_length[1])
maxMacd := ta.max(macd)
//maxMacd = ta.min(macd)
//minMacd = ta.max(macd)
//signal = sma_signal == "SMA" ? ta.sma(macd, signal_length) : ta.ema(macd, signal_length)
//hist = macd - signal
delta = maxMacd-(fast_ma - slow_ma)/(maxMacd -minMacd)
for i = 0 to (signal_length)
PCYi := a*((delta - PCYi[1])+PCYi[1])
PCYi
//Plotting
plot(PCYi)
I think it's because you're calculating the min/max in a for loop
Those functions should (not mandatory but strongly recommended) be calculated at every candle instead
for i = 0 to (signal_length[1])
minMacd := ta.min(macd)
maxMacd=0.0
for i = 0 to (signal_length[1])
maxMacd := ta.max(macd)
If you want to calculate the min/max over a X period of time, maybe use the ta.highest/ta.lowest functions instead :)
And of course, those 2 should be called at every candle (i.e. not in a if, for,... statement)