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Registered User
Joined: 1/7/2008
Posts: 4
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hi-
how do I find out the ATR of a stock?
i would like to get the average true range (ATR) for different stocks on a 9 day period and post it my charts.
thanks,
thoric
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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True Range is the largest of the High minus the Low, the High minus the previous Close or the previous Close minus the Low. A very useful way of calculating this value for the purpose of creating Personal Criteria Formulas is:
(H -L + ABS(H - C1) + ABS(C1 - L)) / 2
Average True Range is the Moving Average of this value. It could be calculated using a Simple Moving Average:
9-Period Simple Moving Average of True Range:
(AVGH9 - AVGL9) / 2 + (ABS(H - C1) + ABS(C1 - L) + ABS(H1 - C2) + ABS(C2 - L1) + ABS(H2 - C3) + ABS(C3 - L2) + ABS(H3 - C4) + ABS(C4 - L3) + ABS(H4 - C5) + ABS(C5 - L4) + ABS(H5 - C6) + ABS(C6 - L5) + ABS(H6 - C7) + ABS(C7 - L6) + ABS(H7 - C8) + ABS(C8 - L7) + ABS(H8 - C9) + ABS(C9 - L8)) / 18
This could be Plotted as a Custom Indicator as follows:
Select Chart Template | Add Indicator | Indicator.
- Visible: Checked
- Center Zero Line: Checked
- Plot using price scale: Unchecked
- Smoothing Average: 9
- Average Type: Simple
- Indicator Formula: (H - L + ABS(H - C1) + ABS(L - C1)) / 2
It is usually calculated using Wilder's Smoothing however. Wilder's Smoothing is a variation of an Exponential Moving Average. You can double the Wilder Period and subtract one to get the Exponential Moving Average Period:
9-Period Average True Range (Wilder's Smoothed):
XAVGH17 - XAVGL17 + .111217813840782 * ((H < C1) * (H - C1) + (C1 < L) * (C1 - L) + 8 / 9 * ((H1 < C2) * (H1 - C2) + (C2 < L1) * (C2 - L1) + 8 / 9 * ((H2 < C3) * (H2 - C3) + (C3 < L2) * (C3 - L2) + 8 / 9 * ((H3 < C4) * (H3 - C4) + (C4 < L3) * (C4 - L3) + 8 / 9 * ((H4 < C5) * (H4 - C5) + (C5 < L4) * (C5 - L4) + 8 / 9 * ((H5 < C6) * (H5 - C6) + (C6 < L5) * (C6 - L5) + 8 / 9 * ((H6 < C7) * (H6 - C7) + (C7 < L6) * (C7 - L6) + 8 / 9 * ((H7 < C8) * (H7 - C8) + (C8 < L7) * (C8 - L7) + 8 / 9 * ((H8 < C9) * (H8 - C9) + (C9 < L8) * (C9 - L8) + 8 / 9 * ((H9 < C10) * (H9 - C10) + (C10 < L9) * (C10 - L9) + 8 / 9 * ((H10 < C11) * (H10 - C11) + (C11 < L10) * (C11 - L10) + 8 / 9 * ((H11 < C12) * (H11 - C12) + (C12 < L11) * (C12 - L11) + 8 / 9 * ((H12 < C13) * (H12 - C13) + (C13 < L12) * (C13 - L12) + 8 / 9 * ((H13 < C14) * (H13 - C14) + (C14 < L13) * (C14 - L13) + 8 / 9 * ((H14 < C15) * (H14 - C15) + (C15 < L14) * (C15 - L14) + 8 / 9 * ((H15 < C16) * (H15 - C16) + (C16 < L15) * (C16 - L15) + 8 / 9 * ((H16 < C17) * (H16 - C17) + (C17 < L16) * (C17 - L16) + 8 / 9 * ((H17 < C18) * (H17 - C18) + (C18 < L17) * (C18 - L17) + 8 / 9 * ((H18 < C19) * (H18 - C19) + (C19 < L18) * (C19 - L18) + 8 / 9 * ((H19 < C20) * (H19 - C20) + (C20 < L19) * (C20 - L19) + 8 / 9 * ((H20 < C21) * (H20 - C21) + (C21 < L20) * (C21 - L20) + 8 / 9 * ((H21 < C22) * (H21 - C22) + (C22 < L21) * (C22 - L21) + 8 / 9 * ((H22 < C23) * (H22 - C23) + (C23 < L22) * (C23 - L22) + 8 / 9 * ((H23 < C24) * (H23 - C24) + (C24 < L23) * (C24 - L23) + 8 / 9 * ((H24 < C25) * (H24 - C25) + (C25 < L24) * (C25 - L24) + 8 / 9 * ((H25 < C26) * (H25 - C26) + (C26 < L25) * (C26 - L25) + 8 / 9 * ((H26 < C27) * (H26 - C27) + (C27 < L26) * (C27 - L26) + 8 / 9 * ((H27 < C28) * (H27 - C28) + (C28 < L27) * (C28 - L27) + 8 / 9 * ((H28 < C29) * (H28 - C29) + (C29 < L28) * (C29 - L28) + 8 / 9 * ((H29 < C30) * (H29 - C30) + (C30 < L29) * (C30 - L29) + 8 / 9 * ((H30 < C31) * (H30 - C31) + (C31 < L30) * (C31 - L30) + 8 / 9 * ((H31 < C32) * (H31 - C32) + (C32 < L31) * (C32 - L31) + 8 / 9 * ((H32 < C33) * (H32 - C33) + (C33 < L32) * (C33 - L32) + 8 / 9 * ((H33 < C34) * (H33 - C34) + (C34 < L33) * (C34 - L33) + 8 / 9 * ((H34 < C35) * (H34 - C35) + (C35 < L34) * (C35 - L34) + 8 / 9 * ((H35 < C36) * (H35 - C36) + (C36 < L35) * (C36 - L35) + 8 / 9 * ((H36 < C37) * (H36 - C37) + (C37 < L36) * (C37 - L36) + 8 / 9 * ((H37 < C38) * (H37 - C38) + (C38 < L37) * (C38 - L37) + 8 / 9 * ((H38 < C39) * (H38 - C39) + (C39 < L38) * (C39 - L38) + 8 / 9 * ((H39 < C40) * (H39 - C40) + (C40 < L39) * (C40 - L39) + 8 / 9 * ((H40 < C41) * (H40 - C41) + (C41 < L40) * (C41 - L40) + 8 / 9 * ((H41 < C42) * (H41 - C42) + (C42 < L41) * (C42 - L41) + 8 / 9 * ((H42 < C43) * (H42 - C43) + (C43 < L42) * (C43 - L42) + 8 / 9 * ((H43 < C44) * (H43 - C44) + (C44 < L43) * (C44 - L43) + 8 / 9 * ((H44 < C45) * (H44 - C45) + (C45 < L44) * (C45 - L44) + 8 / 9 * ((H45 < C46) * (H45 - C46) + (C46 < L45) * (C46 - L45) + 8 / 9 * ((H46 < C47) * (H46 - C47) + (C47 < L46) * (C47 - L46) + 8 / 9 * ((H47 < C48) * (H47 - C48) + (C48 < L47) * (C48 - L47) + 8 / 9 * ((H48 < C49) * (H48 - C49) + (C49 < L48) * (C49 - L48) + 8 / 9 * ((H49 < C50) * (H49 - C50) + (C50 < L49) * (C50 - L49) + 8 / 9 * ((H50 < C51) * (H50 - C51) + (C51 < L50) * (C51 - L50) + 8 / 9 * ((H51 < C52) * (H51 - C52) + (C52 < L51) * (C52 - L51) + 8 / 9 * ((H52 < C53) * (H52 - C53) + (C53 < L52) * (C53 - L52) + 8 / 9 * ((H53 < C54) * (H53 - C54) + (C54 < L53) * (C54 - L53) + 8 / 9 * ((H54 < C55) * (H54 - C55) + (C55 < L54) * (C55 - L54) + 8 / 9 * ((H55 < C56) * (H55 - C56) + (C56 < L55) * (C56 - L55) + 8 / 9 * ((H56 < C57) * (H56 - C57) + (C57 < L56) * (C57 - L56) + 8 / 9 * ((H57 < C58) * (H57 - C58) + (C58 < L57) * (C58 - L57) + 8 / 9 * ((H58 < C59) * (H58 - C59) + (C59 < L58) * (C59 - L58))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
This could be Plotted as a Custom Indicator as follows:
Select Chart Template | Add Indicator | Indicator.
- Visible: Checked
- Center Zero Line: Checked
- Plot using price scale: Unchecked
- Smoothing Average: 17
- Average Type: Exponential
- Indicator Formula: (H - L + ABS(H - C1) + ABS(L - C1)) / 2
Here's an Exponential version to round things out:
9-Period Exponential Moving Average of True Range:
XAVGH9 - XAVGL9 + .200198266760174 * ((H < C1) * (H - C1) + (C1 < L) * (C1 - L) + .8 * ((H1 < C2) * (H1 - C2) + (C2 < L1) * (C2 - L1) + .8 * ((H2 < C3) * (H2 - C3) + (C3 < L2) * (C3 - L2) + .8 * ((H3 < C4) * (H3 - C4) + (C4 < L3) * (C4 - L3) + .8 * ((H4 < C5) * (H4 - C5) + (C5 < L4) * (C5 - L4) + .8 * ((H5 < C6) * (H5 - C6) + (C6 < L5) * (C6 - L5) + .8 * ((H6 < C7) * (H6 - C7) + (C7 < L6) * (C7 - L6) + .8 * ((H7 < C8) * (H7 - C8) + (C8 < L7) * (C8 - L7) + .8 * ((H8 < C9) * (H8 - C9) + (C9 < L8) * (C9 - L8) + .8 * ((H9 < C10) * (H9 - C10) + (C10 < L9) * (C10 - L9) + .8 * ((H10 < C11) * (H10 - C11) + (C11 < L10) * (C11 - L10) + .8 * ((H11 < C12) * (H11 - C12) + (C12 < L11) * (C12 - L11) + .8 * ((H12 < C13) * (H12 - C13) + (C13 < L12) * (C13 - L12) + .8 * ((H13 < C14) * (H13 - C14) + (C14 < L13) * (C14 - L13) + .8 * ((H14 < C15) * (H14 - C15) + (C15 < L14) * (C15 - L14) + .8 * ((H15 < C16) * (H15 - C16) + (C16 < L15) * (C16 - L15) + .8 * ((H16 < C17) * (H16 - C17) + (C17 < L16) * (C17 - L16) + .8 * ((H17 < C18) * (H17 - C18) + (C18 < L17) * (C18 - L17) + .8 * ((H18 < C19) * (H18 - C19) + (C19 < L18) * (C19 - L18) + .8 * ((H19 < C20) * (H19 - C20) + (C20 < L19) * (C20 - L19) + .8 * ((H20 < C21) * (H20 - C21) + (C21 < L20) * (C21 - L20) + .8 * ((H21 < C22) * (H21 - C22) + (C22 < L21) * (C22 - L21) + .8 * ((H22 < C23) * (H22 - C23) + (C23 < L22) * (C23 - L22) + .8 * ((H23 < C24) * (H23 - C24) + (C24 < L23) * (C24 - L23) + .8 * ((H24 < C25) * (H24 - C25) + (C25 < L24) * (C25 - L24) + .8 * ((H25 < C26) * (H25 - C26) + (C26 < L25) * (C26 - L25) + .8 * ((H26 < C27) * (H26 - C27) + (C27 < L26) * (C27 - L26) + .8 * ((H27 < C28) * (H27 - C28) + (C28 < L27) * (C28 - L27) + .8 * ((H28 < C29) * (H28 - C29) + (C29 < L28) * (C29 - L28) + .8 * ((H29 < C30) * (H29 - C30) + (C30 < L29) * (C30 - L29) + .8 * ((H30 < C31) * (H30 - C31) + (C31 < L30) * (C31 - L30))))))))))))))))))))))))))))))))
This could be Plotted as a Custom Indicator as follows:
Select Chart Template | Add Indicator | Indicator.
- Visible: Checked
- Center Zero Line: Checked
- Plot using price scale: Unchecked
- Smoothing Average: 9
- Average Type: Exponential
- Indicator Formula: (H - L + ABS(H - C1) + ABS(L - C1)) / 2
You may wish to review the following:
Plotting Custom Indicators with Examples
How to create a Personal Criteria Forumula (PCF)
PCF Formula Descriptions
Cascades of Moving Averages
Handy PCF example formulas to help you learn the syntax of PCFs!
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 9/9/2008
Posts: 10
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Bruce if I wanted to make a scan of stocks to make sure that theyre trading in at least a 1 to 2 point range based off of the last 9 days, would I use the code you have written for the ATR mov avg...or the longer code below?
Thanks,
Josh
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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hawesdj,
If you want to calculate an Average True Range using just 10-Days of data (you need the Close of the 10th day back for the calculations), you would use the 9-Period Simple Moving Average of True Range. For example:
9-Period Simple Moving Average of True Range at least $1:
(AVGH9 - AVGL9) / 2 + (ABS(H - C1) + ABS(C1 - L) + ABS(H1 - C2) + ABS(C2 - L1) + ABS(H2 - C3) + ABS(C3 - L2) + ABS(H3 - C4) + ABS(C4 - L3) + ABS(H4 - C5) + ABS(C5 - L4) + ABS(H5 - C6) + ABS(C6 - L5) + ABS(H6 - C7) + ABS(C7 - L6) + ABS(H7 - C8) + ABS(C8 - L7) + ABS(H8 - C9) + ABS(C9 - L8)) / 18 >= 1
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 9/9/2008
Posts: 10
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Random question...when I bring up the data of a day on the chart...how do I display the %k number, it seems the stochastic calculation is the %D
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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hawesdj,
Yes, it reports the SD. Create the Stochastic with either the SK or SD Period set to 1 and then create the SD by adding a Moving Average Child Indicator to the Stochastic. This will give you both the SK (from the Stochastic) and the SD (from the Moving Average).
Understanding Stochastics
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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