StyleLibraryLibrary "StyleLibrary"
A small library of Pine Script functions that return built-in style variables.
method sizeStyle(size)
Takes a `string` that returns the corresponding built-in size style variable.
Namespace types: series string, simple string, input string, const string
Parameters:
size (string) : A `string` representing a built-in size style: `"Tiny"`, `"Small"`, `"Normal"`, `"Large"`,
`"Huge"`, `"Auto"`.
Returns: The respective built-in size style variable.
method sizeStyle(size)
Takes a `sizeStyle` that returns the corresponding built-in size style variable.
Namespace types: series sizeStyle
Parameters:
size (series sizeStyle) : A `sizeStyle` representing a built-in size style variable.
Returns: The respective built-in size style variable.
method lineStyle(style)
Takes a `string` that returns the corresponding built-in line style variable.
Namespace types: series string, simple string, input string, const string
Parameters:
style (string) : A `string` representing a built-in line style: `"Dashed"`, `"Dotted"`, `"Solid"`.
Returns: The respective built-in line style variable.
method lineStyle(style)
Takes a `lineStyle` that returns the corresponding built-in line style variable.
Namespace types: series lineStyle
Parameters:
style (series lineStyle) : A `lineStyle` representing a built-in line style variable.
Returns: The respective built-in line style variable.
method labelStyle(style)
Takes a `string` that returns the corresponding built-in label style variable.
Namespace types: series string, simple string, input string, const string
Parameters:
style (string) : A `string` representing a built-in label style:
`"Arrow Down"`, `"Arrow Up"`, `"Circle"`, `"Cross"`, `"Diamond"`, `"Flag"`,
`"Label Center"`, `"Label Down"`, `"Label Left"`, `"Label Lower Left"`,
`"Label Lower Right"`, `"Label Right"`, `"Label Up"`, `"Label Upper Left"`,
`"Label Upper Right"`, `"None"`, `"Square"`, `"Text Outline"`, `"Triangle Down"`,
`"Triangle Up"`, `"XCross"`.
Returns: The respective built-in label style variable.
method labelStyle(style)
Takes a `labelStyle` that returns the corresponding built-in label style variable.
Namespace types: series labelStyle
Parameters:
style (series labelStyle) : A `labelStyle` representing a built-in label style variable.
Returns: The respective built-in label style variable.
method fontStyle(font)
Takes a `string` that returns the corresponding built-in font style variable.
Namespace types: series string, simple string, input string, const string
Parameters:
font (string) : A `string` representing a built-in font style: `"Default"`, `"Monospace"`.
Returns: The respective built-in font style variable.
method positionStyle(position)
Takes a `string` that returns the corresponding built-in position style variable.
Namespace types: series string, simple string, input string, const string
Parameters:
position (string) : A `string` representing a built-in position style:
`"Bottom Center", `"Bottom Left", `"Bottom Right", `"Middle Center", `"Middle Left",
`"Middle Right", `"Top Center", `"Top Left", `"Top Right".
Returns: The respective built-in position style variable.
method displayStyle(display)
Takes a `simple string` that returns the corresponding built-in display style variable.
Namespace types: simple string, input string, const string
Parameters:
display (simple string) : A `simple string` representing a built-in display style: `"All"`, `"Data Window"`,
`"None"`, `"Pane"`, `"Price Scale"`, `"Status Line"`.
Returns: The respective built-in display style variable.
LINE
DeleteArrayType█ OVERVIEW
Here are common functions usually delete drawing once array of drawing is recall.
Method is used as in pine script version 5 instead of custom function.
It is an upgrade from DeleteArrayObject , which may not support overload parameter in future.
Library "DeleteArrayType"
TODO: Delete array type especially for drawings
method deleteLabel(id)
TODO: Delete array
Namespace types: array
Parameters:
id (array)
Returns: TODO: label.delete()
method deleteLine(id)
TODO: Delete array
Namespace types: array
Parameters:
id (array)
Returns: TODO: line.delete()
method deleteLineFill(id)
TODO: Delete array
Namespace types: array
Parameters:
id (array)
Returns: TODO: linefill.delete()
method deletePolyLine(id)
TODO: Delete array
Namespace types: array
Parameters:
id (array)
Returns: TODO: polyline.delete()
method deleteBox(id)
TODO: Delete array
Namespace types: array
Parameters:
id (array)
Returns: TODO: box.delete()
method deleteTable(id)
TODO: Delete array
Namespace types: array
Parameters:
id (array)
Returns: TODO: table.delete()
Polyline PlusThis library introduces the `PolylinePlus` type, which is an enhanced version of the built-in PineScript `polyline`. It enables two features that are absent from the built-in type:
1. Developers can now efficiently add or remove points from the polyline. In contrast, the built-in `polyline` type is immutable, requiring developers to create a new instance of the polyline to make changes, which is cumbersome and incurs a significant performance penalty.
2. Each `PolylinePlus` instance can theoretically hold up to ~1M points, surpassing the built-in `polyline` type's limit of 10K points, as long as it does not exceed the memory limit of the PineScript runtime.
Internally, each `PolylinePlus` instance utilizes an array of `line`s and an array of `polyline`s. The `line`s array serves as a buffer to store lines formed by recently added points. When the buffer reaches its capacity, it flushes the contents and converts the lines into polylines. These polylines are expected to undergo fewer updates. This approach is similiar to the concept of "Buffered I/O" in file and network systems. By connecting the underlying lines and polylines, this library achieves an enhanced polyline that is dynamic, efficient, and capable of surpassing the maximum number of points imposed by the built-in polyline.
🔵 API
Step 1: Import this library
import algotraderdev/polylineplus/1 as pp
// remember to check the latest version of this library and replace the 1 above.
Step 2: Initialize the `PolylinePlus` type.
var p = pp.PolylinePlus.new()
There are a few optional params that developers can specify in the constructor to modify the behavior and appearance of the polyline instance.
var p = pp.PolylinePlus.new(
// If true, the drawing will also connect the first point to the last point, resulting in a closed polyline.
closed = false,
// Determines the field of the chart.point objects that the polyline will use for its x coordinates. Either xloc.bar_index (default), or xloc.bar_time.
xloc = xloc.bar_index,
// Color of the polyline. Default is blue.
line_color = color.blue,
// Style of the polyline. Default is line.style_solid.
line_style = line.style_solid,
// Width of the polyline. Default is 1.
line_width = 1,
// The maximum number of points that each built-in `polyline` instance can contain.
// NOTE: this is not to be confused with the maximum of points that each `PolylinePlus` instance can contain.
max_points_per_builtin_polyline = 10000,
// The number of lines to keep in the buffer. If more points are to be added while the buffer is full, then all the lines in the buffer will be flushed into the poylines.
// The higher the number, the less frequent we'll need to // flush the buffer, and thus lead to better performance.
// NOTE: the maximum total number of lines per chart allowed by PineScript is 500. But given there might be other places where the indicator or strategy are drawing lines outside this polyline context, the default value is 50 to be safe.
lines_bffer_size = 50)
Step 3: Push / Pop Points
// Push a single point
p.push_point(chart.point.now())
// Push multiple points
chart.point points = array.from(p1, p2, p3) // Where p1, p2, p3 are all chart.point type.
p.push_points(points)
// Pop point
p.pop_point()
// Resets all the points in the polyline.
p.set_points(points)
// Deletes the polyline.
p.delete()
🔵 Benchmark
Below is a simple benchmark comparing the performance between `PolylinePlus` and the native `polyline` type for incrementally adding 10K points to a polyline.
import algotraderdev/polylineplus/2 as pp
var t1 = 0
var t2 = 0
if bar_index < 10000
int start = timenow
var p = pp.PolylinePlus.new(xloc = xloc.bar_time, closed = true)
p.push_point(chart.point.now())
t1 += timenow - start
start := timenow
var polyline pl = na
var points = array.new()
points.push(chart.point.now())
if not na(pl)
pl.delete()
pl := polyline.new(points)
t2 += timenow - start
if barstate.islast
log.info('{0} {1}', t1, t2)
For this benchmark, `PolylinePlus` took ~300ms, whereas the native `polyline` type took ~6000ms.
We can also fine-tune the parameters for `PolylinePlus` to have a larger buffer size for `line`s and a smaller buffer for `polyline`s.
var p = pp.PolylinePlus.new(xloc = xloc.bar_time, closed = true, lines_buffer_size = 500, max_points_per_builtin_polyline = 1000)
With the above optimization, it only took `PolylinePlus` ~80ms to process the same 10K points, which is ~75x the performance compared to the native `polyline`.
ObjectHelpersLibrary "ObjectHelpers"
Line | Box | Label | Linefill -- Maker, Setter, Getter Library
TODO: add table functionality
set(object)
set all params for `line`, `box`, `label`, `linefill` objects with 1 function
***
## Overloaded
***
```
method set(line Line, int x1=na, float y1=na, int x2=na, float y2=na,string xloc=na,string extend=na,color color=na,string style=na,int width=na,bool update=na) => line
```
### Params
- **Line** `line` - line object | `required`
- **x1** `int` - value to set x1
- **y1** `float` - value to set y1
- **x2** `int` - value to set x2
- **y2** `float` - value to set y2
- **xloc** `int` - value to set xloc
- **yloc** `int` - value to set yloc
- **extend** `string` - value to set extend
- **color** `color` - value to set color
- **style** `string` - value to set style
- **width** `int` - value to set width
- **update** `bool` - value to set update
***
```
method set(box Box,int left=na,float top=na,int right=na, float bottom=na,color bgcolor=na,color border_color=na,string border_style=na,int border_width=na,string extend=na,string txt=na,color text_color=na,string text_font_family=na,string text_halign=na,string text_valign=na,string text_wrap=na,bool update=false) => box
```
### Params
- **Box** `box` - box object
- **left** `int` - value to set left
- **top** `float` - value to set top
- **right** `int` - value to set right
- **bottom** `float` - value to set bottom
- **bgcolor** `color` - value to set bgcolor
- **border_color** `color` - value to set border_color
- **border_style** `string` - value to set border_style
- **border_width** `int` - value to set border_width
- **extend** `string` - value to set extend
- **txt** `string` - value to set _text
- **text_color** `color` - value to set text_color
- **text_font_family** `string` - value to set text_font_family
- **text_halign** `string` - value to set text_halign
- **text_valign** `string` - value to set text_valign
- **text_wrap** `string` - value to set text_wrap
- **update** `bool` - value to set update
***
```
method set(label Label,int x=na,float y=na, string txt=na,string xloc=na,color color=na,color textcolor=na,string size=na,string style=na,string textalign=na,string tooltip=na,string text_font_family=na,bool update=false) => label
```
### Paramas
- **Label** `label` - label object
- **x** `int` - value to set x
- **y** `float` - value to set y
- **txt** `string` - value to set text add`"+++"` to the _text striing to have the current label text concatenated to the location of the "+++")
- **textcolor** `color` - value to set textcolor
- **size** `string` - value to set size
- **style** `string` - value to set style (use "flip" ,as the style to have label flip to top or bottom of bar depending on if open > close and vice versa)
- **text_font_family** `string` - value to set text_font_family
- **textalign** `string` - value to set textalign
- **tooltip** `string` - value to set tooltip
- **update** `bool` - update label to next bar
***
```
method set(linefill Linefill=na,line line1=na,line line2=na,color color=na) => linefill
```
### Params
- **linefill** `linefill` - linefill object
- **line1** `line` - line object
- **line2** `line` - line object
- **color** `color` - color
Parameters:
object (obj)
Returns: `line`, `box`, `label`, `linefill`
method set(Line, x1, y1, x2, y2, xloc, extend, color, style, width, update)
set the location params of a line with 1 function auto detects time or bar_index for xloc param
Namespace types: series line
Parameters:
Line (line) : `line` - line object | `required`
x1 (int) : `int` - value to set x1
y1 (float) : `float` - value to set y1
x2 (int) : `int` - value to set x2
y2 (float) : `float` - value to set y2
xloc (string) : `int` - value to set xloc
extend (string) : `string` - value to set extend
color (color) : `color` - value to set color
style (string) : `string` - value to set style
width (int) : `int` - value to set width
update (bool) : `bool` - value to set update
Returns: `line`
method set(Box, left, top, right, bottom, bgcolor, border_color, border_style, border_width, extend, txt, text_color, text_font_family, text_halign, text_valign, text_wrap, update)
set the location params of a box with 1 function
Namespace types: series box
Parameters:
Box (box) : `box` - box object | `required`
left (int) : `int` - value to set left
top (float) : `float` - value to set top
right (int) : `int` - value to set right
bottom (float) : `float` - value to set bottom
bgcolor (color) : `color` - value to set bgcolor
border_color (color) : `color` - value to set border_color
border_style (string) : `string` - value to set border_style
border_width (int) : `int` - value to set border_width
extend (string) : `string` - value to set extend
txt (string) : `string` - value to set _text
text_color (color) : `color` - value to set text_color
text_font_family (string) : `string` - value to set text_font_family
text_halign (string) : `string` - value to set text_halign
text_valign (string) : `string` - value to set text_valign
text_wrap (string) : `string` - value to set text_wrap
update (bool) : `bool` - value to set update
Returns: `box`
method set(Label, x, y, txt, xloc, color, textcolor, size, style, textalign, tooltip, text_font_family, update)
set the location params of a label with 1 function auto detects time or bar_index for xloc param
Namespace types: series label
Parameters:
Label (label) : `label` | `required`
x (int) : `int` - value to set x
y (float) : `float` - value to set y
txt (string) : `string` - value to set text add`"+++"` to the _text striing to have the current label text concatenated to the location of the "+++")
xloc (string)
color (color)
textcolor (color) : `color` - value to set textcolor
size (string) : `string` - value to set size
style (string) : `string` - value to set style (use "flip" ,as the style to have label flip to top or bottom of bar depending on if open > close and vice versa)
textalign (string) : `string` - value to set textalign
tooltip (string) : `string` - value to set tooltip
text_font_family (string) : `string` - value to set text_font_family
update (bool) : `bool` - update label to next bar
Returns: `label`
method set(Linefill, line1, line2, color)
change the 1 or 2 of the lines in a linefill object
Namespace types: series linefill
Parameters:
Linefill (linefill)
line1 (line) : `line` - line object
line2 (line) : `line` - line object
color (color) : `color` - color
Returns: `linefill`
get(object)
get all of the location variables for `line`, `box`, `label` objects or the line objects from a `linefill`
***
## Overloaded
***
```
method get(line Line) =>
```
### Params
- **Line** `line` - line object | `required`
***
```
method get(box Box) =>
```
### Params
- **Box** `box` - box object | `required`
***
```
method get(label Label) =>
```
### Paramas
- **Label** `label` - label object | `required`
***
```
method get(linefill Linefill) =>
```
### Params
- **Linefill** `linefill` - linefill object | `required`
Parameters:
object (obj)
Returns: ` `
method get(Line)
Gets the location paramaters of a Line
Namespace types: series line
Parameters:
Line (line) : `line` - line object
Returns:
method get(Box)
Gets the location paramaters of a Box
Namespace types: series box
Parameters:
Box (box) : `box` - box object
Returns:
method get(Label)
Gets the `x`, `y`, `text` of a Label
Namespace types: series label
Parameters:
Label (label) : `label` - label object
Returns:
method get(Linefill)
Gets `line 1`, `line 2` from a Linefill
Namespace types: series linefill
Parameters:
Linefill (linefill) : `linefill` - linefill object
Returns:
method set_x(Line, x1, x2)
set the `x1`, `x2` of a line
***
### Params
- **Line** `line` - line object | `required`
- **x1** `int` - value to set x1 | `required`
- **x2** `int` - value to set x2 | `required`
Namespace types: series line
Parameters:
Line (line) : `line` - line object
x1 (int) : `int` - value to set x1
x2 (int) : `int` - value to set x2
Returns: `line`
method set_y(Line, y1, y2)
set `y1`, `y2` of a line
***
### Params
- **Line** `line` - line object | `required`
- **y1** `float` - value to set y1 | `required`
- **y2** `float` - value to set y2 | `required`
Namespace types: series line
Parameters:
Line (line) : `line` - line object
y1 (float) : `float` - value to set y1
y2 (float) : `float` - value to set y2
Returns: `line`
method Line(x1, y1, x2, y2, extend, color, style, width)
Similar to `line.new()` but can detect time or bar_index for xloc param and has defaults for all params but `x1`, `y1`, `x2`, `y2`
***
### Params
- **x1** `int` - value to set
- **y1** `float` - value to set
- **x2** `int` - value to set
- **y2** `float` - value to set
- **extend** `string` - extend value to set line
- **color** `color` - color to set line
- **style** `string` - style to set line
- **width** `int` - width to set line
Namespace types: series int, simple int, input int, const int
Parameters:
x1 (int) : `int` - value to set
y1 (float) : `float` - value to set
x2 (int) : `int` - value to set
y2 (float) : `float` - value to set
extend (string) : `string` - extend value to set line
color (color) : `color` - color to set line
style (string) : `string` - style to set line
width (int) : `int` - width to set line
Returns: `line`
method Box(left, top, right, bottom, extend, border_color, bgcolor, text_color, border_width, border_style, txt, text_halign, text_valign, text_size, text_wrap)
similar to box.new() with the but can detect xloc param and has defaults for everything but location params
***
### Params
- **left** `int` - value to set
- **top** `float` - value to set
- **right** `int` - value to set
- **bottom** `float` - value to set
- **extend** `string` - extend value to set box
- **border_color** `color` - color to set border
- **bgcolor** `color` - color to set background
- **text_color** `color` - color to set text
- **border_width** `int` - width to set border
- **border_style** `string` - style to set border
- **txt** `string` - text to set
- **text_halign** `string` - horizontal alignment to set text
- **text_valign** `string` - vertical alignment to set text
- **text_size** `string` - size to set text
- **text_wrap** `string` - wrap to set text
Namespace types: series int, simple int, input int, const int
Parameters:
left (int) : `int` - value to set
top (float) : `float` - value to set
right (int) : `int` - value to set
bottom (float) : `float` - value to set
extend (string) : `string` - extend value to set box
border_color (color) : `color` - color to set border
bgcolor (color) : `color` - color to set background
text_color (color) : `color` - color to set text
border_width (int) : `int` - width to set border
border_style (string) : `string` - style to set border
txt (string) : `string` - text to set
text_halign (string) : `string` - horizontal alignment to set text
text_valign (string) : `string` - vertical alignment to set text
text_size (string) : `string` - size to set text
text_wrap (string) : `string` - wrap to set text
Returns: `box`
method Label(txt, x, y, yloc, color, textcolor, style, size, textalign, text_font_family, tooltip)
Similar to label.new() but can detect time or bar_index for xloc param and has defaults for all params but x, y, txt, tooltip
***
### Params
- **txt** `string` - string to set
- **x** `int` - value to set
- **y** `float` - value to set
- **yloc** `string` - y location to set
- **color** `color` - label color to set
- **textcolor** `color` - text color to set
- **style** `string` - style to set
- **size** `string` - size to set
- **textalign** `string` - text alignment to set
- **text_font_family** `string` - font family to set
- **tooltip** `string` - tooltip to set
Namespace types: series string, simple string, input string, const string
Parameters:
txt (string) : `string` - string to set
x (int) : `int` - value to set
y (float) : `float` - value to set
yloc (string) : `string` - y location to set
color (color) : `color` - label color to set
textcolor (color) : `color` - text color to set
style (string) : `string` - style to set
size (string) : `string` - size to set
textalign (string) : `string` - text alignment to set
text_font_family (string) : `string` - font family to set
tooltip (string) : `string` - tooltip to set
Returns: `label`
obj
Fields:
obj (series__string)
Vector2DrawLineLibrary "Vector2DrawLine"
Extends line type with methods for Vector2 and Segment2.
new(origin, target, xloc, extend, color, style, width)
Draws a line using Segment type to hold its coordinate properties..
Parameters:
origin : Vector2 . Origin vector of the line.
target : Vector2 . Target vector of the line.
xloc : string
extend : string
color : color
style : string
width : int
Returns: line object
new(segment, xloc, extend, color, style, width)
Draws a line using Segment type to hold its coordinate properties..
Parameters:
segment : Segment2 . Segment with positional coordinates.
xloc : string
extend : string
color : color
style : string
width : int
Returns: line object
rotate_around(this, center, angle)
Instance method to rotate line around center vector (modifies input line).
Parameters:
this : line . Line object.
center : Vector2 . Center of rotation.
angle : float . Rotation angle in degrees.
Returns: line. Rotated line object.
intersectLibrary "intersect"
Find Line Intersection X/Y coordinates.
Simple to use, will find intersection if it exists on the segments
if the line segments do not cross on segment, an 'na' value will be returned
if you plot new items with the output coords, they still plot.
avoid this by setting a na(x) condition before plotting new items
get(l1, l2, ( optional _round) )
line intersection coordinates
Parameters:
l1 : (line) first line
l2 : (line) second line
_round : True to make an INT for plotting
if not used, will not round ( overload loophole)
Returns: with x as int if bool is used
AlgebraLibrary "Algebra"
Algebra functions.
line_fromXy(x1, y1, x2, y2)
Get line slope and y-intercept from coordinates
Parameters:
x1 : x coordinate 1 (int - bar index)
y1 : y coordinate 1 (float - price/value)
x2 : x coordinate 2 (int - bar index)
y2 : y coordinate 2 (float - price/value)
Returns: of line
line_getPrice(x, slope, yInt)
Get line slope and y-intercept from coordinates
Parameters:
x : x coordinate to solve for y (int - bar index)
slope : slope of line (float)
yInt : y-intercept of line (float)
Returns: y (price/value)
BoxLine_LibLibrary "BoxLine_Lib"
personal Library for line and box built in functions
lineXY(x)
get x1,y1,x2,y2 in a tuple
Parameters:
x : TODO: line
Returns: tuple of x1,y1,x2,y2
line(x)
Create line with only the y1 value(when line == na) or all
when line != na set x1,y1,x2,y2 individually just 1 or all
- use just the line value to set the x2 to current bar or time will set to time
- will auto pick xloc.bar_index or xloc.bar_time if not used
Parameters:
x : (line line,int x1,float y1,int x2,float y2,
string xloc,string extend,color color,string style,int width)
Returns: Line
boxXY(x)
get left,top,right,bottom in a tuple
Parameters:
x : box
Returns: tuple of left,top,right,bottom
box(x)
Create line with only the top,bottom value(when line == na) or all
when box != na set left,top,right,bottom individually just 1 or all
- use just the box value to set the right to current bar or time will set to time
- if right is above a number that a bar_index wouldnt be
Parameters:
x : box box,int left,float top,int right,
float bottom,color border_color, int border_width,
string border_style,string extend,string xloc,
color bgcolor,string text,string text_size, color text_color,
string text_halign,string text_valign,string text_wrap)
Returns: TODO: Box
DeleteArrayObject█ OVERVIEW
Delete array object according to array size such as label, line, linefill, box and table.
█ CREDITS
HeWhoMustNotBeNamed
[e2] Drawing Library :: Horizontal Ray█ OVERVIEW
Library "e2hray"
A drawing library that contains the hray() function, which draws a horizontal ray/s with an initial point determined by a specified condition. It plots a ray until it reached the price. The function let you control the visibility of historical levels and setup the alerts.
█ HORIZONTAL RAY FUNCTION
hray(condition, level, color, extend, hist_lines, alert_message, alert_delay, style, hist_style, width, hist_width)
Parameters:
condition : Boolean condition that defines the initial point of a ray
level : Ray price level.
color : Ray color.
extend : (optional) Default value true, current ray levels extend to the right, if false - up to the current bar.
hist_lines : (optional) Default value true, shows historical ray levels that were revisited, default is dashed lines. To avoid alert problems set to 'false' before creating alerts.
alert_message : (optional) Default value string(na), if declared, enables alerts that fire when price revisits a line, using the text specified
alert_delay : (optional) Default value int(0), number of bars to validate the level. Alerts won't trigger if the ray is broken during the 'delay'.
style : (optional) Default value 'line.style_solid'. Ray line style.
hist_style : (optional) Default value 'line.style_dashed'. Historical ray line style.
width : (optional) Default value int(1), ray width in pixels.
hist_width : (optional) Default value int(1), historical ray width in pixels.
Returns: void
█ EXAMPLES
• Example 1. Single horizontal ray from the dynamic input.
//@version=5
indicator("hray() example :: Dynamic input ray", overlay = true)
import e2e4mfck/e2hray/1 as e2draw
inputTime = input.time(timestamp("20 Jul 2021 00:00 +0300"), "Date", confirm = true)
inputPrice = input.price(54, 'Price Level', confirm = true)
e2draw.hray(time == inputTime, inputPrice, color.blue, alert_message = 'Ray level re-test!')
var label mark = label.new(inputTime, inputPrice, 'Selected point to start the ray', xloc.bar_time)
• Example 2. Multiple horizontal rays on the moving averages cross.
//@version=5
indicator("hray() example :: MA Cross", overlay = true)
import e2e4mfck/e2hray/1 as e2draw
float sma1 = ta.sma(close, 20)
float sma2 = ta.sma(close, 50)
bullishCross = ta.crossover( sma1, sma2)
bearishCross = ta.crossunder(sma1, sma2)
plot(sma1, 'sma1', color.purple)
plot(sma2, 'sma2', color.blue)
// 1a. We can use 2 function calls to distinguish long and short sides.
e2draw.hray(bullishCross, sma1, color.green, alert_message = 'Bullish Cross Level Broken!', alert_delay = 10)
e2draw.hray(bearishCross, sma2, color.red, alert_message = 'Bearish Cross Level Broken!', alert_delay = 10)
// 1b. Or a single call for both.
// e2draw.hray(bullishCross or bearishCross, sma1, bullishCross ? color.green : color.red)
• Example 3. Horizontal ray at the all time highs with an alert.
//@version=5
indicator("hray() example :: ATH", overlay = true)
import e2e4mfck/e2hray/1 as e2draw
var float ath = 0, ath := math.max(high, ath)
bool newAth = ta.change(ath)
e2draw.hray(nz(newAth ), high , color.orange, alert_message = 'All Time Highs Tested!', alert_delay = 10)
regressLibrary "regress"
produces the slope (beta), y-intercept (alpha) and coefficient of determination for a linear regression
regress(x, y, len) regress: computes alpha, beta, and r^2 for a linear regression of y on x
Parameters:
x : the explaining (independent) variable
y : the dependent variable
len : use the most recent "len" values of x and y
Returns: : alpha is the x-intercept, beta is the slope, an r2 is the coefficient of determination
Note: the chart does not show anything, use the return values to compute model values in your own application, if you wish.
