This code snippet demonstrates how to calculate the proximity of the current closing price to the 200-day Simple Moving Average (SMA200) in terms of percentage. This can be useful for identifying how close the price is to this moving average, which is often used to determine long-term market trends.

percent = 3
ratio = close/average[200]
percent = percent/100
test = ratio>=1-percent and ratio<=1+percent
screener[test](ratio)

Explanation of the Code:

• percent = 3: This line sets the proximity threshold to 3%. This means we are interested in cases where the price is within 3% of the SMA200.
• ratio = close/average[200]: Here, the code calculates the ratio of the current closing price (close) to the 200-day Simple Moving Average (average[200]). This ratio helps in comparing the current price directly to the SMA200.
• percent = percent/100: Converts the percentage from a whole number to a decimal for calculation purposes. For example, 3 becomes 0.03.
• test = ratio>=1-percent and ratio<=1+percent: This line creates a logical test to check if the ratio is within the specified percentage range (±3% in this case) around 1 (which represents exact equality with SMA200).
• screener[test](ratio): This function call uses the test condition to filter or screen data. If the condition is true, it outputs the ratio, indicating how close the price is to the SMA200 within the specified proximity.

This snippet is particularly useful for traders or analysts who want to monitor stocks or securities that are trading close to their 200-day moving average, a common indicator of long-term trends.