How do you calculate the height of a Dot/Diamond/Arrow to put text under it?

[DaFish]

Hi. I am drawing a Dot, Diamond or Arrow on the chart. I want it some space below the low, then I want to put some text below that. How do I figure out how large a dot, diamond and arrow is, so I can put the text under it and not overlap it or have too much space?

Here is the code I have written to date, it just doesn't work when I go to a different chart - I am using TickSize as the factor to space it out... bad idea.

Please help.

public static void MFDrawItem (this NinjaScript ns, NinjaScriptBase nsb, ref int dcounter, int drawtype, int panel, bool direction, string IDPrefix, int currbar, int barsback, double drawony, double drawoffset, Brush brush, string txtstrval1, string txtstrval2)
{
double lbloffset = 0;
// double defaultoffset; // ticks below the Y value to draw the arrow
// double drawTicksOffset;
double prevarrowoffset;
double ts;
// bool nextarrow = false; // used to increment the arrow if we get 2 in 1 bar in same direction

ts = (double) Instrument.Instruments[0].MasterInstrument.TickSize;

// drawTicksOffset = drawoffset * ts; // ticks below the Y value to draw the arrow
// defaultoffset = 40.0 * ts;
// lbloffset = defaultoffset;

if (direction) // long direction
{
if (LastUpArrowBar == currbar)
{
ns.Print ("another up arrow on bar <" + currbar + ">");
prevarrowoffset = LastUpArrowOffset;
} else {
prevarrowoffset = 0.0;
}
switch(drawtype)
{
case 0: // draw a dot
lbloffset = drawony - ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;
DrawingTools.Draw.Dot (nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset -= (ts * .07);
dcounter++;
break;
case 1: // draw an diamond
lbloffset = drawony - ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;
DrawingTools.Draw.Diamond(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset -= (ts * .1);
dcounter++;
break;
case 2: // draw an arrow
lbloffset = drawony - ((drawoffset * ts) - (ts * .07)) + prevarrowoffset;
DrawingTools.Draw.ArrowUp(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset -= (ts * .23);
dcounter++;
break;
}
if (txtstrval1 != "")
{
DrawingTools.Draw.Text(nsb, "Txt1"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval1, barsback, lbloffset, brush);
lbloffset -= (ts * .13);
dcounter++;
}
if (txtstrval2 != "")
{
DrawingTools.Draw.Text(nsb, "Txt2"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval2, barsback, lbloffset, brush);
lbloffset -= (ts * .13);
dcounter++;
}
lbloffset -= (ts * .08); // spacer for the next one
LastUpArrowOffset = lbloffset - drawony; // save this we may need to print another arrow below it
LastUpArrowBar = currbar;
}
else
{
if (LastDownArrowBar == currbar)
{
ns.Print ("another down arrow on bar <" + currbar + ">");
prevarrowoffset = LastDownArrowOffset;
} else {
prevarrowoffset = 0.0;
}
switch(drawtype)
{
case 0: // draw a dot
lbloffset = drawony + ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;;
DrawingTools.Draw.Dot(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset += (ts * .31);
dcounter++;
break;
case 1: // draw an diamond
lbloffset = drawony + ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;;
DrawingTools.Draw.Diamond(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset += (ts * .32);
dcounter++;
break;
case 2: // draw an arrow
lbloffset = drawony + ((drawoffset * ts) + (ts * .00)) + prevarrowoffset;
DrawingTools.Draw.ArrowDown(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset += (ts * .45);
dcounter++;
break;
}
if (txtstrval2 != "")
{
DrawingTools.Draw.Text(nsb, "Txt2"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval2, barsback, lbloffset, brush);
lbloffset += (ts * .13);
dcounter++;
}
if (txtstrval1 != "")
{
DrawingTools.Draw.Text(nsb, "Txt1"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval1, barsback, lbloffset, brush);
lbloffset += (ts * .13);
dcounter++;
}
lbloffset += (ts * .07); // spacer for the next one
LastDownArrowOffset = lbloffset - drawony; // save this we may need to print another arrow above it
LastDownArrowBar = currbar;
}
}
}

[koganam]

Hi. I am drawing a Dot, Diamond or Arrow on the chart. I want it some space below the low, then I want to put some text below that. How do I figure out how large a dot, diamond and arrow is, so I can put the text under it and not overlap it or have too much space?

Here is the code I have written to date, it just doesn't work when I go to a different chart - I am using TickSize as the factor to space it out... bad idea.

Please help.

public static void MFDrawItem (this NinjaScript ns, NinjaScriptBase nsb, ref int dcounter, int drawtype, int panel, bool direction, string IDPrefix, int currbar, int barsback, double drawony, double drawoffset, Brush brush, string txtstrval1, string txtstrval2)
{
double lbloffset = 0;
// double defaultoffset; // ticks below the Y value to draw the arrow
// double drawTicksOffset;
double prevarrowoffset;
double ts;
// bool nextarrow = false; // used to increment the arrow if we get 2 in 1 bar in same direction

ts = (double) Instrument.Instruments[0].MasterInstrument.TickSize;

// drawTicksOffset = drawoffset * ts; // ticks below the Y value to draw the arrow
// defaultoffset = 40.0 * ts;
// lbloffset = defaultoffset;

if (direction) // long direction
{
if (LastUpArrowBar == currbar)
{
ns.Print ("another up arrow on bar <" + currbar + ">");
prevarrowoffset = LastUpArrowOffset;
} else {
prevarrowoffset = 0.0;
}
switch(drawtype)
{
case 0: // draw a dot
lbloffset = drawony - ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;
DrawingTools.Draw.Dot (nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset -= (ts * .07);
dcounter++;
break;
case 1: // draw an diamond
lbloffset = drawony - ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;
DrawingTools.Draw.Diamond(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset -= (ts * .1);
dcounter++;
break;
case 2: // draw an arrow
lbloffset = drawony - ((drawoffset * ts) - (ts * .07)) + prevarrowoffset;
DrawingTools.Draw.ArrowUp(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset -= (ts * .23);
dcounter++;
break;
}
if (txtstrval1 != "")
{
DrawingTools.Draw.Text(nsb, "Txt1"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval1, barsback, lbloffset, brush);
lbloffset -= (ts * .13);
dcounter++;
}
if (txtstrval2 != "")
{
DrawingTools.Draw.Text(nsb, "Txt2"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval2, barsback, lbloffset, brush);
lbloffset -= (ts * .13);
dcounter++;
}
lbloffset -= (ts * .08); // spacer for the next one
LastUpArrowOffset = lbloffset - drawony; // save this we may need to print another arrow below it
LastUpArrowBar = currbar;
}
else
{
if (LastDownArrowBar == currbar)
{
ns.Print ("another down arrow on bar <" + currbar + ">");
prevarrowoffset = LastDownArrowOffset;
} else {
prevarrowoffset = 0.0;
}
switch(drawtype)
{
case 0: // draw a dot
lbloffset = drawony + ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;;
DrawingTools.Draw.Dot(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset += (ts * .31);
dcounter++;
break;
case 1: // draw an diamond
lbloffset = drawony + ((drawoffset * ts) + (ts * .03)) + prevarrowoffset;;
DrawingTools.Draw.Diamond(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset += (ts * .32);
dcounter++;
break;
case 2: // draw an arrow
lbloffset = drawony + ((drawoffset * ts) + (ts * .00)) + prevarrowoffset;
DrawingTools.Draw.ArrowDown(nsb, (IDPrefix+currbar.ToString()+dcounter.ToString()), true, barsback, lbloffset, brush);
if (txtstrval1 != "" || txtstrval2 != "")
lbloffset += (ts * .45);
dcounter++;
break;
}
if (txtstrval2 != "")
{
DrawingTools.Draw.Text(nsb, "Txt2"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval2, barsback, lbloffset, brush);
lbloffset += (ts * .13);
dcounter++;
}
if (txtstrval1 != "")
{
DrawingTools.Draw.Text(nsb, "Txt1"+(IDPrefix+currbar.ToString()+dcounter.ToStr ing()), txtstrval1, barsback, lbloffset, brush);
lbloffset += (ts * .13);
dcounter++;
}
lbloffset += (ts * .07); // spacer for the next one
LastDownArrowOffset = lbloffset - drawony; // save this we may need to print another arrow above it
LastDownArrowBar = currbar;
}
}
}

Use Draw.Text() and draw text arrows, dots, etc. There is at least one overload of Draw.Text() that allows precise placement of the object by definite offset.

[DaFish]

Use Draw.Text() and draw text arrows, dots, etc. There is at least one overload of Draw.Text() allows precise placement of the object by definite offset.

Hi koganam. I am using Draw.Text.

That is the problem though, I don't have the exact sizing, and I don't know how to get the exact location.

I want to do the following (think of this as a bar). Under the bar I want:

Low of bar
space (few pixels)
DOT/Diamond/Arrow
space (few pixels)
Text 1 (IE: CCI)
Text 2 (IE: DN)

What I don't know:
1) The location of the low
2) how to specify a few pixels (I was using TickSize times a fudge factor)
3) how big the dot/diamond/arrow is to put the text below it
4) how bit the text is to put the next text line below it....

[koganam]

Hi koganam. I am using Draw.Text.

That is the problem though, I don't have the exact sizing, and I don't know how to get the exact location.

I want to do the following (think of this as a bar). Under the bar I want:

Low of bar
space (few pixels)
DOT/Diamond/Arrow
space (few pixels)
Text 1 (IE: CCI)
Text 2 (IE: DN)

What I don't know:
1) The location of the low
2) how to specify a few pixels (I was using TickSize times a fudge factor)
3) how big the dot/diamond/arrow is to put the text below it
4) how bit the text is to put the next text line below it....

No you are not. You are using Draw.Dot(), Draw.Diamond etc. Look up the overloads for Draw.Text(): there is at least one overload that has all the information that you are asking for. Then use Draw.Text() to draw text dots etc. You may have to bring up the Character Map in Windows (or another tool) to see what text character glyphs you need.

[NinjaTrader_Matthew]

I think koganam has the right idea here, it would be a lot of work to dynamically calculate the radius of the chart marker natively from an indicator and position it on the chart as the scales updates. On the other hand, you could theoretically create your own custom Drawing Tool by referencing the logic in DrawingTools\@ChartMarkers and adding text to what is rendered, however those objects likely have some concepts that are new to you at this point, perhaps something to tackle later down the road...

But the easy way out is just use a unicode chracter in the text argument for Draw.Text():

http://www.fileformat.info/info/unicode/char/25CF/index.htm

// u25CF draws black dot + \n creates a new line + yourText
Draw.Text(this, "text", "\u25CF" + "\n" + "Hi", 0, Low[0]);