Hello.
The built-in ATR is in dollars, correct? Is there an absolute-value ATR (in percent)? If not, could you please help me with building one? Thank you.

ATR is going to be in US dollars for stocks traded on US exchanges.

If you are going to return ATR as a percentage, you need to determine the basis to use for the calculations. If you want to use the previous close.

100 * ATR / C1

If you want to use the current price.

100 * ATR / C

If you want to use something else, just replace the C1 or C in the formula.

Bruce, thank you. This makes sense. 

To follow up on this, what is the period being averaged for the ATR in th example calcuation? I assume it's one period base on the information in the data window when hovering over the plot and since there's no parameter for the period. I'm looking at WBMD, with a calcuation of .03 percent. 

Can the period be used in the same calcuations, like:

100 * ATR(14) /C

To add to the above, when I use:

TrueInRow(100 * ATR(14) / C, 5) < .50

as a column condition, I'm not seeing the true condition appear where I expect it to. For example, SPLS has been under .50 for at least 5 days in a row, but it doesn't validate as such using the above....

ATR defaults to a period of 1 (which is essentially true range and not average true range). So if you want to use a 14 period average true range, then it can be written exactly as you have already done.

Ah, ok. Yes, I knew that it was the true range, also, but didn't want to assume and thought something else might be happening.

Is this it?

100 * ((AVGH14 - AVGL14) / 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) + ABS(H9 - C10) + ABS(C10 - L9) + ABS(H10 - C11) + ABS(C11 - L10) + ABS(H11 - C12) + ABS(C12 - L11) + ABS(H12 - C13) + ABS(C13 - L12) + ABS(H13 - C14) + ABS(C14 - L13)) / 28) / C

100 * ATR(14) / C

Is the same as the longer formula (at least if you are using TC2000 v17).

100 * ((AVGH14 - AVGL14) / 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) + ABS(H9 - C10) + ABS(C10 - L9) + ABS(H10 - C11) + ABS(C11 - L10) + ABS(H11 - C12) + ABS(C12 - L11) + ABS(H12 - C13) + ABS(C13 - L12) + ABS(H13 - C14) + ABS(C14 - L13)) / 28) / C

Thank you very much. This helps a ton. Thanks again.

You're welcome.