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Hello,
Below is a positioning sample code. Note that if scale changes (pxheight changes) due to new data,
it needs additional refresh to read new scale and adjust positions properly
Plot(C, "Price", colorBlack, styleLine );
GfxSetOverlayMode(0);
Miny = Status("axisminy");
Maxy = Status("axismaxy");
lvb = Status("lastvisiblebar");
fvb = Status("firstvisiblebar");
pxwidth = Status("pxwidth");
pxheight = Status("pxheight");
TotalBars = Lvb - fvb;
axisarea = 56; // may need adjustment if you are using non-default font for axis
GfxSelectSolidBrush( colorRed );
GfxSelectPen( colorRed );
for( i = 0; i < TotalBars AND i < ( BarCount - fvb ); i++ )
{
x = 5 + i * (pxwidth - axisarea - 10) / ( TotalBars + 1 );
y = 5 + ( C[ i + fvb ] - Miny ) * ( pxheight - 10 )/ ( Maxy - Miny );
GfxRectangle( x - 1, pxheight - y - 1, x + 2, pxheight - y + 2);
}
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "J. Biran" <jbiran@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, August 07, 2007 3:01 AM
Subject: RE: [amibroker] Re: How to you use the low-level graphics to plot text?
>
> That's good information!
>
> What about the x axis positioning?
>
>
> Joseph Biran
> ____________________________________________
>
> -----Original Message-----
> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
> Of Tomasz Janeczko
> Sent: Monday, August 06, 2007 4:14 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] Re: How to you use the low-level graphics to plot
> text?
>
> WHAT?????????????????????????
> I did NOT say that !!!
>
> What I did say was that PlotText is SIMPLER.
>
> It does not mean that you can use Gfx functions. And I actually described
> what you should do !
>
> === COPY OF MY SUPPORT RESPONSE BELOW ===
>
>
> Using low-level graphics you need to:
>
> 1. get the "height" of the pane - Status("pxheight")
>
> 2. get the "miny" and "maxy" Status("axisminy"), Status("axismaxy")
>
> 3. calculate value->pixel position and then plot at specified X/Y
>
> BUT..... to plot text on CHART at specified PRICE point, you should
> really use much simpler PlotText() function that uses PRICE and DATE
> as coordintes so you don't need to calculate yourself:
>
> http://www.amibroker.com/f?plottext
>
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Jerry Gress" <pleasenospamplease@xxxxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Tuesday, August 07, 2007 12:42 AM
> Subject: RE: [amibroker] Re: How to you use the low-level graphics to plot
> text?
>
>
>> Thanks Graham,
>>
>> Hope your doing well, yeah received e-mail from support and it Looks like
> we
>> can't use the great graphics for simple plottext. Too bad!!!!!!
>>
>> Jerry Gress
>> Stockton, Ca.
>>
>>
>> -----Original Message-----
>> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On
> Behalf
>> Of Graham
>> Sent: Monday, August 06, 2007 2:59 PM
>> To: amibroker@xxxxxxxxxxxxxxx
>> Subject: Re: [amibroker] Re: How to you use the low-level graphics to plot
>> text?
>>
>> to write text at bars use plottext function, to plot shapes at bars
>> use plotshapes function
>>
>> --
>> Cheers
>> Graham Kav
>> AFL Writing Service
>> http://www.aflwriting.com
>>
>>
>>
>> On 06/08/07, kar_avi <kar_avi@xxxxxxxxx> wrote:
>>> --- In amibroker@xxxxxxxxxxxxxxx, "Jerry Gress"
>>> <pleasenospamplease@xxx> wrote:
>>> >
>>>
>>> > So the question is how do I put some fancy text on a 2 minute chart at
>>> > specified price points? The best this lowly programmer can tell all
> this
>>> > graphic stuff is to the pixel not price. Example:
>>> >
>>> >
>>> > SYNTAX GfxTextOut( "text", x, y )
>>> > RETURNS NOTHING
>>> > FUNCTION Writes a character string at the specified location using the
>>> > currently selected font.
>>> >
>>> > Parameters:
>>> >
>>> > "text" - Specifies the character string to be drawn
>>> > x - Specifies the x-coordinate of the starting point of the text
>>> > y - Specifies the y-coordinate of the starting point of the text
>>> >
>>> >
>>> > Any help will be greatly appreciated.
>>> >
>>> > Jerry Gress
>>> > Stockton, Ca.
>>> >
>>>
>>> exactly my problem also. I want to plot lot of texts, arrows, shapes
>>> etc near range bar breakouts. but the coordinates are in pixels, and I
>>> do not know any way to get the pixels of the High of a bar identified,
>>> unless its built from scratch as the code posted here previously. so
>>> the low level functions may not be useful to traders who write their
>>> own systems with some amount of coding, but more to developers who can
>>> enhance features for Amibroker.
>>>
>>
>>
>> Please note that this group is for discussion between users only.
>>
>> To get support from AmiBroker please send an e-mail directly to
>> SUPPORT {at} amibroker.com
>>
>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> http://www.amibroker.com/devlog/
>>
>> For other support material please check also:
>> http://www.amibroker.com/support.html
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>>
>> Please note that this group is for discussion between users only.
>>
>> To get support from AmiBroker please send an e-mail directly to
>> SUPPORT {at} amibroker.com
>>
>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> http://www.amibroker.com/devlog/
>>
>> For other support material please check also:
>> http://www.amibroker.com/support.html
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
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