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draw circle?

  • #1
  • First Post: May 5, 2010 10:24pm May 5, 2010 10:24pm
in mql4, elipse only takes 2 coordinates, and the edit screen of the eclipse shows two coordinate and a scale. i don't know how to which figure can make a perfect circle and that parameter doesn't seem to be able to be changed using metaeditor.
While in mql5, eclipse takes 3 coordinates, however it still lacks an official description of the function of how to actually draw one and how to use it. Does anyone know?
  • #2
  • May 6, 2010 7:27am May 6, 2010 7:27am
Quoting lmyyyks
in mql4, elipse only takes 2 coordinates, and the edit screen of the eclipse shows two coordinate and a scale. i don't know how to which figure can make a perfect circle and that parameter doesn't seem to be able to be changed using metaeditor.
While in mql5, eclipse takes 3 coordinates, however it still lacks an official description of the function of how to actually draw one and how to use it. Does anyone know?
In MT4, an ellipse can be created thus:

ObjectCreate(objname,OBJ_ELLIPSE,window,time1,price1,time2,price2);
ObjectSet(objname,OBJPROP_SCALE,scale);

where:
time1, price1 = the top left coordinate on the chart
time2, price2 = the bottom right coordinate on the chart
scale = the 'width' of the ellipse (i.e. top right to bottom left). A value of 1.618 appears to draw a line (width=0), while using a smaller scale value makes the ellipse 'fatter' (greater width).

Even if you succeed in setting the scale value to plot what appears to be a perfect circle, the plot shape changes as you zoom in/out, either horizontally or vertically.

I haven't even begun to look at MT5 yet.
  • #3
  • May 6, 2010 7:37am May 6, 2010 7:37am
Thanks for your reply, hanover,

but i think what i want to do cannot be done by mt4 because the way they set-up the function seems impossible to draw the eclipses i want.

MQL5 is far more difficult than MQL4, too many new functions and syntax, I have to re-start from half-scratch
  • #4
  • Jan 31, 2016 4:07pm Jan 31, 2016 4:07pm
Quoting hanover
{quote} In MT4, an ellipse can be created thus: ObjectCreate(objname,OBJ_ELLIPSE,window,time1,price1,time2,price2); ObjectSet(objname,OBJPROP_SCALE,scale); where: time1, price1 = the top left coordinate on the chart time2, price2 = the bottom right coordinate on the chart scale = the 'width' of the ellipse (i.e. top right to bottom left). A value of 1.618 appears to draw a line (width=0), while using a smaller scale value makes the ellipse 'fatter' (greater width). Even if you succeed in setting the scale value to plot what appears to be a perfect...

hi hanover...
just wanted to know if this can be done on an indicator wherein a small eclipse with two anglular lines inside (e.g. TDI angles)
Since Frank Sinatra sings in his own way, my chart sing... I did it, my way
  • #5
  • Edited Feb 1, 2016 1:21am Jan 31, 2016 6:49pm | Edited Feb 1, 2016 1:21am
Quoting v2vboni
just wanted to know if this can be done on an indicator wherein a small eclipse with two anglular lines inside (e.g. TDI angles)
Anything that can be plotted manually can also be plotted automatically, using the same co-ordinates, by an EA/indicator/script. To discover what the co-ordinates are, right click on one of the object's handles, click Properties, and then go to the Parameters tab.

 An ellipse requires two time ordinates and two price ordinates that define one 'axis' of the ellipse, and a scale value which defines the width of the perpendicular axis.

 A trendline requires two time ordinates and two price ordinates that define the beginning and end of the trendline.

To plot two angular lines inside an ellipse would require the plotting of two trendlines.

If you want an indicator coded, you would need to provide the programmer with the necessary calculations for each object (ellipse plus two trendlines). I am no longer writing custom indicators for people, but perhaps if you post your request in one of the "I code your indicators for free" threads, another programmer will help you.
  • #6
  • Jan 31, 2016 11:36pm Jan 31, 2016 11:36pm
[quote=hanover;8723309]{quote} Anything that can be plotted manually can also be plotted automatically, using the same co-ordinates, by an EA/indicator/script. To discover what the co-ordinates are, right click on one of the object's handles, click Properties, and then go to the Parameters tab.  An ellipse requires two time ordinates and two price ordinates that define one 'axis' of the ellipse, and a scale value which defines the width of the perpendicular axis.  A trendline requires two time ordinates and two price ordinates that define the beginning and end of the trendline. To plot two angular lines inside an ellipse would require the plotting of two trendlines. If you want an indicator coded, you would need to provide the programmer with the necessary calculations for each object (ellipse plus two trendlines). I am no longer writing custom indicators for people, but perhaps if you post your request in one of the "I code your indicators for free" threads, another programmer will help you.[/quote

Thank you for your prompt response and valuable input. I am actually trying to code and learning by example. Like opening someone else work and working on it to put some other options or functionalities. the latest one I modified was the TMS Angeleator that I shared recently.

Again thank you for explaining this one for me. I'm reading a lot lately and testing my code with regards to eclipse.
Since Frank Sinatra sings in his own way, my chart sing... I did it, my way
  • #7
  • Feb 1, 2016 2:07am Feb 1, 2016 2:07am
Quoting v2vboni
Quoting hanover
{quote}
Thank you for your prompt response and valuable input. I am actually trying to code and learning by example. Like opening someone else work and working on it to put some other options or functionalities. the latest one I modified was the TMS Angeleator that I shared recently. Again thank you for explaining this one for me. I'm reading a lot lately and testing my code with regards to eclipse.
I knew a bit of coding from college when I started programming for MT4. When I got back into coding after a 4 year hiatus, I tried doing what I highlighted in your post and let me tell you, this was the worst thing I could do. Best thing, IMO (your results may vary), start off by writing simple indicators or expert advisers and consult the Help manual. F1 key is your friend. If you have any questions and are willing to prove that you're not asking others to do the work for you, the MQL4 forums are a great resource. If Googling "<search term> mql4" doesn't reveal an answer, try posting there and someone will help you out.

Once you know what you're doing, THEN looking at other people's codes will make a lot more sense and will help you out as a coder.

Maybe you're far more advance than I gather from your post, so I apologize if this sounds a bit condescending as that is not my intent. If you know this stuff already, hopefully it will help out others who don't know much about coding and want to get into MQL4. Cheers.
  • #8
  • Feb 2, 2016 12:47am Feb 2, 2016 12:47am
Quoting Amart83
{quote}{quote}I knew a bit of coding from college when I started programming for MT4. When I got back into coding after a 4 year hiatus, I tried doing what I highlighted in your post and let me tell you, this was the worst thing I could do. Best thing, IMO (your results may vary), start off by writing simple indicators or expert advisers and consult the Help manual. F1 key is your friend. If you have any questions and are willing to prove that you're not asking others to do the work for you, the MQL4 forums are a great resource. If Googling "<search...
No harm done...

I have a background in programming but not too deep as you were maybe when you started. There is a thread here at FF "I will code your indicator for free..." is a good resource for me. Plus the best one are the Masters here at FF wherein they shared their indicators and trading strategy for Free. Those Masters are really kind at heart to help others. They would spend time coding not just for themselves but for others. You can give back the favor by sharing your ideas or trading strategy here or by testing their indicators/EAs.

For those who wants to learn... of course they need to have a basic programming at least. Again, I'm still new here
Since Frank Sinatra sings in his own way, my chart sing... I did it, my way
  • #9
  • Jun 2, 2019 5:27am Jun 2, 2019 5:27am
Quoting hanover
{quote} In MT4, an ellipse can be created thus: ObjectCreate(objname,OBJ_ELLIPSE,window,time1,price1,time2,price2); ObjectSet(objname,OBJPROP_SCALE,scale); where: time1, price1 = the top left coordinate on the chart time2, price2 = the bottom right coordinate on the chart scale = the 'width' of the ellipse (i.e. top right to bottom left). A value of 1.618 appears to draw a line (width=0), while using a smaller scale value makes the ellipse 'fatter' (greater width). Even if you succeed in setting the scale value to plot what appears to be a perfect...
Hanover, can a square be made in MT 4 on two or three points? If so could you make one? Respectfully Thank You
You NEVER will be the person you could be, without pressure & discipline
  • #10
  • Last Post: Jun 4, 2019 5:24am Jun 4, 2019 5:24am
in order to draw a circle you need convertion factor to convert number of pips in number of time/bars and viceversa.

https://www.forexfactory.com/showthr...72196&page=309
post number 6169
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