This code snippet appears to be part of a larger program, likely related to data visualization or analysis, possibly involving a bar chart or similar graphical representation. Let's break down each function and its purpose.
1. GetNextLowTD(int P)
- Purpose: This function finds the index of the next "low" turning point (TD) in a data buffer (
Buf2
). A "low" turning point likely refers to a local minimum in the data. - Parameters:
P
: The starting index to search from. This is likely the index of the previous turning point.
- Logic:
- It initializes
i
toP + 1
. - It enters a
while
loop that continues as long asBuf2[i]
is equal to 0. This suggests that a value of 0 inBuf2
signifies a "low" point. - Inside the loop,
i
is incremented. - A check
if (i > showBars - 2)
prevents the search from going out of bounds. Ifi
exceedsshowBars - 2
, it means no more low turning points were found within the visible range, and the function returns -1.
- It initializes
- Return Value: The index
i
of the next low turning point. If no low turning point is found within the bounds, it returns -1.
2. GetNextTD(int P)
- Purpose: This function finds the index of the next "turning point" (TD) in a data buffer (
Buf2
). A "turning point" likely refers to a local minimum or maximum in the data. - Parameters:
P
: The starting index to search from. This is likely the index of the previous turning point.
- Logic:
- It initializes
i
toP + 1
. - It enters a
while
loop that continues as long asBuf2[i]
is equal to 0. This suggests that a value of 0 inBuf2
signifies a "turning point". - Inside the loop,
i
is incremented. - A check
if (i > showBars - 2)
prevents the search from going out of bounds. Ifi
exceedsshowBars - 2
, it means no more turning points were found within the visible range, and the function returns -1.
- It initializes
- Return Value: The index
i
of the next turning point. If no turning point is found within the bounds, it returns -1.
3. GetNextLowTD(int P)
- Purpose: This function finds the index of the next "low" turning point (TD) in a data buffer (
Buf2
). A "low" turning point likely refers to a local minimum in the data. - Parameters:
P
: The starting index to search from. This is likely the index of the previous turning point.
- Logic:
- It initializes
i
toP + 1
. - It enters a
while
loop that continues as long asBuf2[i]
is equal to 0. This suggests that a value of 0 inBuf2
signifies a "low" point. - Inside the loop,
i
is incremented. - A check
if (i > showBars - 2)
prevents the search from going out of bounds. Ifi
exceedsshowBars - 2
, it means no more low turning points were found within the visible range, and the function returns -1.
- It initializes
- Return Value: The index
i
of the next low turning point. If no low turning point is found within the bounds, it returns -1.
Key Observations and Assumptions:
Buf2
: This is a global or accessible data buffer. It seems to contain numerical data, and a value of 0 likely indicates a significant point (either a low or a turning point).showBars
: This is a global variable that defines the number of bars or data points being displayed. The- 2
in the bounds check suggests that the first and last bars are excluded from the search.- Turning Points vs. Low Turning Points: The distinction between "turning points" and "low turning points" is important. It suggests that the program is interested in identifying both general turning points and specifically the local minima.
- Purpose: The functions are likely used to automatically identify and track significant features in a dataset, which could be used for analysis, filtering, or highlighting.
Possible Use Case:
Imagine a program that displays a bar chart of stock prices. These functions could be used to automatically identify and highlight the lowest points (local minima) in the price data, helping users quickly spot potential buying opportunities.
To fully understand the code, you would need:
- The definitions of
Buf2
,showBars
, and the context in which these functions are called. - The purpose of the program as a whole.
- The meaning of the data stored in
Buf2
.
Indicators Used
Miscellaneous
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Divergence_v6
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