EMA SMA angle indicator | Forex Factory

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EMA SMA angle indicator

  • #1
  • First Post: Apr 12, 2010 5:35am Apr 12, 2010 5:35am
Hi all,
I was wondering if there is an available indicator to show the actual degrees of a chosen EMA and SMA on the chart. I have seen the angle indicators that appear at the bottom of the chart but they don't show the actual degrees. Is there something to indicate the degrees on the main chart?

Regards
Kostas
  • #2
  • Apr 12, 2010 7:03am Apr 12, 2010 7:03am
hey kostas..... let me post this before the dust and rocks start flyin............ you probably don't know but a few weeks ago there was quite a heated diss-cuss-ion about degrees on charts...... not wanting another blackeye, i kept my mouth shut......

can't recall ever seeing what your huntin, if someone does not post it , we should be able to code it easy enough......h
to trade and code, keep both simple... no call to impress....h
  • #3
  • Apr 12, 2010 7:21am Apr 12, 2010 7:21am
Quoting hayseed
hey kostas..... let me post this before the dust and rocks start flyin............ you probably don't know but a few weeks ago there was quite a heated diss-cuss-ion about degrees on charts...... not wanting another blackeye, i kept my mouth shut......

can't recall ever seeing what your huntin, if someone does not post it , we should be able to code it easy enough......h

Hey dude,
Hayseed, nice hearing from you again. Have no idea what you are talking about (it seems I missed an episode). The last month I am employing the Dance method and had good success so far. One filter in this method is using the angle of the EMA,SMA for which you can use the MT4 tool manually. I have found the attached indicator but this goes on the bottom of the chart as a bar-chart and doesn't show actual degrees (although it's probably doing it in its code). What I needed was to have actual degrees on my chart (at one corner of the price chart). So if you got a spare moment and could actually modify it I would greatly appreciate it .

Regards,
Kostas
Attached File(s)
File Type: mq4 MA_Angle_v4.mq4   8 KB | 11,064 downloads
  • #4
  • Apr 12, 2010 9:42am Apr 12, 2010 9:42am
Quoting kostas1
What I needed was to have actual degrees on my chart (at one corner of the price chart).
There are no angles in the chart, there are no degrees, therefore it is impossible to write an indicator for it.


The Thread mentioned by hayseed started in this forum here (use the search function) and then continued over at mql4.com where all misunderstandings were finally solved: http://forum.mql4.com/31021
  • #5
  • Edited 5:46pm Apr 12, 2010 5:35pm | Edited 5:46pm
I have written and examined several of these indicators and never used the "angle". I always thought that the relation between successive bars was more important than the absolute value. I mean does it really matter if the angle is 59 or 61. The eye can filter out the meaningful from the noise. Its just a matter of becoming familar with the indicator and what is happening on the chart. If need be, a threshold line can be drawn to assist the eye.
  • #6
  • Apr 12, 2010 7:06pm Apr 12, 2010 7:06pm
hey kostas..... when writing a indicator that shows the angle, you must first decide, "angle from what"....

if you think of the numbers on a clock, 3 is often said to be 0 degrees..... 12 is 90 degrees, 9 is 180 and 6 is 270.....

that is how metatrader assigns angles....


so if the ma is rising it's ma might be rising at 45 degrees..... with a rising ma there is no confusion.....

but.... what if the ma is falling.... we might think of it as falling -45.... however, metatrader assigns that same angle something like 315.....

so my point is, how do you want the angle of a falling ma to be veiwed, the way metatrader assigns it, 315 or -45....


so give it some thought....... 315 or -45 ......h
to trade and code, keep both simple... no call to impress....h
  • #7
  • Apr 12, 2010 11:52pm Apr 12, 2010 11:52pm
Quoting hayseed
hey kostas..... when writing a indicator that shows the angle, you must first decide, "angle from what"....

if you think of the numbers on a clock, 3 is often said to be...
G'day Kostas and Hayseed
Not very helpful on how its done but this is the one I've seen
Attached Image (click to enlarge)
Click to Enlarge Name: angle indy.png Size: 175 KB
We are all One. Be present. Be the Observer
  • #8
  • Apr 13, 2010 12:24am Apr 13, 2010 12:24am
Quoting CodeMeister
I have written and examined several of these indicators and never used the "angle". I always thought that the relation between successive bars was more important than the absolute value. I mean does it really matter if the angle is 59 or 61. The eye can filter out the meaningful from the noise. Its just a matter of becoming familar with the indicator and what is happening on the chart. If need be, a threshold line can be drawn to assist the eye.
CodeMeister,

I agree but when you are involved with a scalping technique it would help to get an instant read of a value.
  • #9
  • Apr 13, 2010 12:33am Apr 13, 2010 12:33am
Quoting 7bit
There are no angles in the chart, there are no degrees, therefore it is impossible to write an indicator for it.


The Thread mentioned by hayseed started in this forum here (use the search function) and then continued over at mql4.com where all misunderstandings were finally solved: http://forum.mql4.com/31021
7bit,
I am not sure why not. If the issue has to do with the scale of the chart then what I do is always keep the same fixed scale on my charts. So for example my M15 is always 150 pips in y-sale and about 1.5 days in x-scale. What I found is when I try to look for an SMA, EMA angle they always measure the same (using the MT4 Trendline-by-Angle tool).
Now if there is another way to get the slope reading I don't have your coding experience and I would not be able to offer an opinion. What I need is a quick reading of 3-4 SMAs on my fixed-scaled chart.

Thanks,
Kostas
  • #10
  • Edited 12:49am Apr 13, 2010 12:38am | Edited 12:49am
Quoting hayseed
hey kostas..... when writing a indicator that shows the angle, you must first decide, "angle from what"....

if you think of the numbers on a clock, 3 is often said to be...

Hayseed,
I would think that the way MT4 assigns it is just fine, since hopefully I can judge by eye is the MA is rising or falling.
Actually something like what Iamfx has shown in a previous post with readings for 3 MAs would be just fine.
I am not sure if this matters in coding, but I always keep my charts at fixed scales to have a consistent angle reading. If you can come up with another way to indicate how steep the MAs are then please go ahead.
Thanks again for your time,
Kostas.
  • #11
  • Apr 13, 2010 12:44am Apr 13, 2010 12:44am
Quoting Iamfx
G'day Kostas and Hayseed
Not very helpful on how its done but this is the one I've seen
Thanks Iamfx. It's on the master's :nerd:hands now and believe me he does miracles....
  • #12
  • Apr 13, 2010 3:12am Apr 13, 2010 3:12am
Quoting hayseed
hey kostas..... let me post this before the dust and rocks start flyin............ you probably don't know but a few weeks ago there was quite a heated diss-cuss-ion about degrees on charts...... not wanting another blackeye, i kept my mouth shut......

can't recall ever seeing what your huntin, if someone does not post it , we should be able to code it easy enough......h
hi hayseed, do you mean this one? http://www.forexfactory.com/showthread.php?t=226519?
  • #13
  • Edited 6:03am Apr 13, 2010 5:37am | Edited 6:03am
You want a value that can be displayed, a value that is positive or negative when rising or falling, a value that can be compared (bigger or smaller) with other values and a value that is completely independent from scaling, even from the timeframe itself.

Here is a practical example: (all it does is calculate the slope of the hypotenuse and leave out the step with transforming into pixel (or whatever fixed) coordinates and doing the trigonometry for finding an angle. It simply calculates the slope, which is all you need.)

Inserted Code
[color=SeaGreen]// this will use the 3 last bars of an SMA14[/color]

int bars_back = 3;
int ma_period = 14;
 
double price0 = iMA(NULL, 0, ma_period, 0, MODE_SMA, PRICE_CLOSE, 0);
double price1 = iMA(NULL, 0, ma_period, 0, MODE_SMA, PRICE_CLOSE, bars_back);

[color=SeaGreen]// the price difference is the first thing wee need, it is negative or positive
// and proportional to the growth rate, the slope. It is the first one of 
// the two catheti that wee need for our calculation. We calculate it in 
// points for easier usage later:[/color]
double priceDiff = (price0 - price1) / Point;

[color=SeaGreen]// the other cathetus of our triangle is the time between the two
// measurements. We simply multiply bars_back with the Period()
// to always have this time in minutes, no matter what timeframe
// we use.[/color]
int timeDiff = bars_back * Period();

[color=SeaGreen]// now we calculate the slope of the hypotenuse.[/color]
double slope = priceDiff / timeDiff;

[color=SeaGreen]// now we already have all we need. We do NOT use arccos
// or arcsin now, since the two catheti are not of the same
// dimension, so an angle is not defined mathematically. Instead
// we simply use this slope value as it is already all that we need:
// * it is positive or negative depending on whether it is rising or falling
// * it is completely independent of chart scale or timeframe
// * it has a descriptive meaning already, namely the growth rate (in points per minute)[/color]
If we wanted to calculate an angle in degrees of this line on the screen we would then first have to find the pixel scales for time and price to transform our slope of price per time into something like yPixel per xPixel (for this specific scale and zoom-factor only) and then use arcsin to get an angle in degrees.

But we would not gain anything from this last step, we would only introduce an arbitrary factor that is highly dependent on the user's display or chart settings, window-size, etc., destroy the mathematical simplicity and would not give us any additional information.
  • #14
  • Apr 14, 2010 6:03pm Apr 14, 2010 6:03pm
Quoting kostas1
Thanks Iamfx. It's on the master's :nerd:hands now and believe me he does miracles....
hey kostas..... no master, just a hayseed here..... nothing more..... i can assure you.....

someone that prefers not to think and speak in terms of absolutes
but prefers to speak and think in terms of possibilties......


sorry for the delay, i've been tied up huntin beavers.......

will post something tonite and send you a link to the indicator....... then there will 2 people in the world that knows,

there are angles in the chart, there are degrees, therefore it is possible to write an indicator for it.


.....h
to trade and code, keep both simple... no call to impress....h
  • #15
  • Apr 14, 2010 6:14pm Apr 14, 2010 6:14pm
Quoting sangmane
hi hayseed, do you mean this one? http://www.forexfactory.com/showthread.php?t=226519?

hey sangmane.... sorry for the delay in reply, been tied up...... yep's that the one....

several times i wanted to mention a few things there but decided to keep my mouth shut.....

//-----
some of my best friends are true geniuses , so this comes from experience...... it's odd how sometimes, not always, the most intelligent people can be so closed minded..... makes me wonder how they ever got so smart........ almost inversely proportional if you know what i mean......h
to trade and code, keep both simple... no call to impress....h
  • #16
  • Apr 14, 2010 10:32pm Apr 14, 2010 10:32pm
hey kostas..... ok, here we go.....

when measuring angles of ma's we need the ability to specify 2 points in time.... to best visualize what's being done i've written it to create 2 triangles...... red for a downtrend and blue for uptrend....

the first picture shows the 2 triangles with bold magenta lines on the hypotenuse.... let's just use the blue one..... you'll notice the blue 56.92 to the right of the blue triangle...... that is the angle in degrees of the ma at the blue triangle.....

//----
now let's prove it using metatraders own built it in "trend by angle" tool..... if we place the trend angle tool on the magenta line and run it out
past the triangle we can see in the picture metatrader shows the angle as 57.9 degrees.... look at the gray box at the triangles edge..... the slight difference might be due to my less than precision rounding but more likely due to the fact ross and stringo are no doubt far better at math than me.....

//----

the third picture better shows metatraders 'trend by angle' properties box..... where you can better see the 57.9 degrees....


//----

the fourth picture shows switching timeframes from 4hour to hour..... of course now the ma values are different so everything is rerdrawn and recalculated..... correctly.....

//-----

switching back to the 4hour chart, everything is again redrawn.... zooming in or out is no problem...... if we temporarily zoom our calculated values do not change, as seen in picture 5..... the triangles themselves must of course change..... if for some reason you might prefer to leave the chart as is and recalculate the values , that is 1 simple click......

and fwiw, it's also possible to calculate and veiw the ma's angle value in advance on all possible zoom settings of all possible timeframes from a single chart..... a simple step further would allow you to see the ma's angle of all pairs, all timeframes at all possible zoom settings on a single chart.....

there might be something i left out but you should get the idea..... the triangles were just used as reference, we can code it to only show the values as in iamfx's chart......

i'll wrap up the code as soon as possible and send you a link.......h
Attached Image(s) (click to enlarge)
Click to Enlarge Name: k1.gif Size: 42 KB
Click to Enlarge Name: k2.jpg Size: 143 KB
Click to Enlarge Name: k3.jpg Size: 152 KB
Click to Enlarge Name: k4.jpg Size: 142 KB
Click to Enlarge Name: k6.jpg Size: 141 KB
to trade and code, keep both simple... no call to impress....h
  • #17
  • Apr 15, 2010 12:50am Apr 15, 2010 12:50am
Quoting hayseed
hey kostas..... ok, here we go.....

i'll wrap up the code as soon as possible and send you a link.......h

Hayseed,
You've done it again!
It looks nice and I would remove the reference triangles as you suggested. I will comment more when I play with it.

Regards,
Kostas.

P.S. If this works out do I have your permission to post it for the rest of the community?
  • #18
  • Apr 16, 2010 2:22am Apr 16, 2010 2:22am
My version
Attached Image (click to enlarge)
Click to Enlarge Name: ma_angle.gif Size: 16 KB
Attached File(s)
File Type: mq4 ma_angle.mq4   4 KB | 6,806 downloads
  • #19
  • Apr 17, 2010 3:49am Apr 17, 2010 3:49am
Quoting Dm_35
My version
DM,

Thanks, I will test later in the weekend

Kostas
  • #20
  • Apr 27, 2010 9:05pm Apr 27, 2010 9:05pm
Hi,
Can i have that indicator?
I do believe in the angles in charts not like 7bit.

Thank you.















Quoting kostas1
Hayseed,
You've done it again!
It looks nice and I would remove the reference triangles as you suggested. I will comment more when I play with it.

Regards,
Kostas.

P.S. If this works out do I have your permission to post it for the rest of the community?
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