29 Nov 2018
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This ProBuilder code snippet is designed to find and plot the closest daily high and low prices relative to the current price on a chart. It is particularly useful for traders who want to visualize significant price levels from previous days that might act as support or resistance.
defparam drawonlastbaronly=true
//saving the daily high/low while reading the history
if day<>day[1] then
$dh[i]=dhigh(1)
$dl[i]=dlow(1)
i=i+1
endif
//find the closest daily high/low
if islastbarupdate then
hh=0
ll=close*1000
lasthhdiff=0
lastlldiff=0
for a = 0 to i do
hhdiff=abs($dh[a]-close)
if hhdiffThis code operates in two main phases: data collection and analysis.
- Data Collection: The script starts by checking if the current bar is the start of a new day (using
day<>day[1]). If it is, it stores the daily high and low prices into arrays$dhand$dlrespectively. The indexiis incremented each day to keep track of the number of entries. - Analysis: When the script is processing the last update of the chart (
islastbarupdate), it initializes variables to store the closest high (hh) and low (ll) and their respective differences from the current price (lasthhdiff,lastlldiff). It then iterates through all stored daily highs and lows, calculating the absolute difference from the current price. If a smaller difference is found, it updates the closest high or low and the smallest difference found so far. - Plotting: Finally, horizontal lines are drawn at the levels of the closest high and low prices using
drawhline.
This snippet is useful for visualizing important price levels that could influence future price movements.
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Nicolas
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I created ProRealCode because I believe in the power of shared knowledge. I spend my time coding new tools and helping members solve complex problems.
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