How to fill or erase a single pixel?

What tool or tools do I have to use to erase or fill a single pixel at a time?
Sincere thanks in advance for yourhelp.
Al

So many ways; you can use one or a combination of:
Brush Tool set to 1 pixel and a color that matches the area
Spot Healing Brush Tool set to around 3 or 4 pixels
Clone Stamp Tool set to a reasonable size based upon area and a soft edge (a graphics tablet like those from Wacom is a big help here due to being able to set size and opacity; pen pressure determines size and/or opacity as you paint)

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How to copy and paste a single pixel

How to copy and paste a single pixel
I want to copy a single pixel and then paste it in the
position of
another pixel in the same image.
(This is in effect changing the colour of the target pixel,
isn't it.
But in my case copying an existing pixel seems simpler than
selecting a
colour from the swatch or using the colour picker.)
What is the most efficient way of doing this?
I tried to select one pixel with the marquee tool. Then
copied it with
control-C, but then how do I select the target pixel and
paste with
control-V?
Thanks for your help.
Adrian

Use the Pencil Tool
alex
adrian stock wrote:
> How to copy and paste a single pixel
>
> I want to copy a single pixel and then paste it in the
position of
> another pixel in the same image.
>
> (This is in effect changing the colour of the target
pixel, isn't it.
> But in my case copying an existing pixel seems simpler
than selecting a
> colour from the swatch or using the colour picker.)
>
> What is the most efficient way of doing this?
>
> I tried to select one pixel with the marquee tool. Then
copied it with
> control-C, but then how do I select the target pixel and
paste with
> control-V?
>
> Thanks for your help.
>
> Adrian
>

How to add Event to every single pixel with BitmapData?

What I want to accomplish: when I drag the cursor over a sprite I want the sprite to break down and every single pixel moves through the screen at random x and y axis.
To make it simple the draw this is what I want but with much more fragments(pixels) around, thousands of them. How come could I approach this?
Thanks in advance.

if mc is the object whose pixels you want to randomize and display in a bitmap:
var bmpd:BitmapData = new BitmapData(mc.width,mc.height);
bmpd.draw(mc);
var bmp:Bitmap = new Bitmap(bmpd);
addChild(bmp);
mc.visible=false;
mc.addEventListener(MouseEvent.MOUSE_OVER,randomizeF);
function randomizeF():void{
    var a:Array = [];
    for(var x:int=1;x<=bmpd.width;x++){
        for(var y:int=1;y<=bmpd.height;y++){
            a.push(bmpd.getPixel32(x,y));
    shuffle(a);
    var i:int=0;
    for(x=1;x<=bmpd.width;x++){
        for(y=1;y<=bmpd.height;y++){
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            i++;
function shuffle(a:Array) {
    var p:int;
    var t:*;
    var ivar:int;
    for (ivar = a.length-1; ivar>=0; ivar--) {
        p=Math.floor((ivar+1)*Math.random());
        t = a[ivar];
        a[ivar] = a[p];
        a[p] = t;

Just a single pixel.

I can't find a method in graphics or ghraphics2d that will allow me to change a single pixel in the paintComponent method. the best I can do is a very short line (g.drawLine(x, y, x, y)). surely a method like this would call a method that draws a dot, but I can't find it. a little help please.

This is just my 2 cents.
somebody must know more about the 'graphics' class,
and how the drawLine method is programmed - it must,
itself, draw one pixel at a time.Well, maybe not. A Java implementation does not talk to the hardware. It will generally have to call some native method that calls a 3rd party graphics implementation (X, WinG, Direct Draw, etc. ), which in turn could call another level of abstraction... including the driver and eventually hardware. There's no guarantee that a 3rd pary API or interface will have a "drawPoint(x,y)" method on ever conceivable OS and graphics configuration. Furthermore it might be the case that a particular optimization occurs in the hardware level. Maybe some graphics hardware is only capable of drawing "lines" even if they are only 1 pixel long. Certainly hardware accellerated 2d and 3d graphics aren't drawn 1 pixel at a time at the software level. It makes sense that a filled rectangle should be done at hardware level, probably evel lines.
Probably the most overhead here is putting 2 extra values on the call stack.
Anyway, I think the old saying about premature optimization is as true here as it is otherwise. If you can actually show with the use of a profiler that an application's bottleneck is the Graphics.drawLine method, and that there's no more efficient way to write the app, THEN we have a problem.
Or satisfy your curiosity:
public static void main(String[] args)
        int trials = 30;
        int loops = 20000000;
        long cummulative_2parms = 0;
        long cummulative_4parms = 0;
        for (int i=0; i<trials; i++)
            long t;
            //2 parms
            t = -System.currentTimeMillis();
            for (int j=0; j<loops; j++)
                two_parms(j, j);
            t+= System.currentTimeMillis();
            cummulative_2parms +=t;
            System.out.println(
                    "2 parm ms: " + t + "\n" +
                    "cummulative " + cummulative_2parms + "\n");
            //4 parms
            t = -System.currentTimeMillis();
            for (int j=0; j<loops; j++)
                four_parms(j, j, j, j);
            t+= System.currentTimeMillis();
            cummulative_4parms +=t;
            System.out.println(
                    "4 parm ms: " + t + "\n" +
                    "cummulative " + cummulative_4parms + "\n");
    static void two_parms(int x, int y)
    static void four_parms(int i01, int i02, int i03, int i04)
    }

How to fill empty parameter (selection-option)

Hi!
On selection screen I have two parameters (s_egrid and s_empid). If user enter something in first (but not in second) one, second one should be filled from database.
The problem is that I don't know how to fill the empty parameter.
Let's say that i have an internal table i_zemployee with list of all necessary employee Id's (stored in field empid)
if I Ioop like this
loop at i_zemployee into wa_zemployee.
    insert wa_zemployee-empid into s_empid.
endloop.
... I did something stupid but i hope that you understand what i need:
s_emipd[1] = 'u1'.
s_emipd[2] = 'u7'.
s_emipd[3] = 'u9'.
... like array of user id's.
and this s_empid I need in my next SELECT statement like
SELECT * FROM ...
    WHERE empid in s_empid.
if someone knows the solution thanks in advance!
T.

HI try something like this...
tables: mara, makt.
data: begin of itab occurs 0,
matnr like mara-matnr,
end of itab.
data : begin of btab occurs 0,
maktx like makt-maktx,
end of btab.
ata mak like makt-maktx.
DATA : return like ddshretval occurs 0 with header line.
data: begin of dynpfields occurs 3.
          include structure dynpread.
data: end of dynpfields.
select-options: p_matnr for mara-matnr.
select matnr from mara into table itab where matnr IN p_matnr.
loop at itab.
write: / itab-matnr.
endloop.
Initialization.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_matnr.
REFRESH ITAB.
SELECT matnr FROM mara INTO TABLE ITAB.
call function 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'MATNR '
dynprofield = 'P_MATNR '
dynpprog = sy-REPID
dynpnr = sy-dynnr
value_org = 'S'
TABLES
value_tab = ITAB
return_tab = return.
select single maktx from makt into mak where matnr = return-fieldval.
p_matnr = return-fieldval.
refresh return.
clear return.
move 'P_MAKTX' to dynpfields-fieldname.
move mak to dynpfields-fieldvalue.
append dynpfields.
CALL FUNCTION 'DYNP_VALUES_UPDATE'
EXPORTING
    dyname                     = 'SY-REPID'
    dynumb                     = '1000'
tables
    dynpfields                 = dynpfields
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
refresh return.
clear return.
validate according to ur requirement.
Regards
Syed A

How to fill canvas with lines

<mx:Canvas id="b1" x="10" y="10" height="40" width="300" borderStyle="solid" borderColor="black"/>
when i want to draw lines with 15 pixels gap to fill the entire canvas i wrote as follows
               for(var i:int=b1.x+15;i<b1.x+b1.width;i=i+15)
                    var line1:UIComponent = new UIComponent();
                    var lineThickness1:Number = 1;
                    var lineColor1:Number = 0x000000;
                    var lineAlpha1:Number = 1;
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                    this.addChild(line1);
it's working fine
lly,
<mx:Canvas id="b4" x="600" y="200" height="60" width="300" borderStyle="solid" borderColor="black" rotation="40"/>
I have the above canvas with id 'b4' only difference is that this canvas has the rotation
how to fill this canvas with lines just i did above?

Hope this code will help you,
for(var i: int = 15; i < b4.width; i = i + 15) {
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     var lineThickness1: Number = 1;
     var lineColor1: Number = 0x000000;
     var lineAlpha1: Number = 1;
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     b4.addChild(line1);
<mx:Canvas id="b4" x="600" y="200" height="60" width="300" borderStyle="solid" borderColor="black" rotation="40"/>

Single pixel vertical line

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Any suggestions?
Take it in for repair.

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How do you delete [empty] a single file or folder from "Trash"?

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How to fill internal table with no data in debugging mode

Hi all,
I modified one existing program.Now I want to test it.I am not given test data.So in the middle of my debugging, I found that one internal table with no data.My problem is how to fill that internal table with few records in that debugging mode just as we change contents in debugging mode.If I want to proceed further means that internal table must have some records.
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Hi,
In the debugging do the following..
Click the Table button..
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Sorry, but you can't permanently delete an app. You can hide them:
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I have several web/ejb applications. These applications use some common libraries and should share instances of classes from those libraries.
But applications are being deployed independently thus packaging all them to EAR is not acceptable.
I suppose the problem is that each application uses separate class loader.
How can I make AS use single class loader for a set of applications?
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When I placed common jar to *%domain%/lib* - all works. But that jar is shared between all applications on the domain.
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How do i properly erase an iphoto folder?

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Sorry to be so confusing...
Hope I've been helpfull.
Kisses from Portugal
CV

How to fill the values in List Box?

Hi Experts,
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Thanks in Advance,
Regards,
Raghu

hi,
and u doing it through report means from se38 than here is code...
DATA : BEGIN OF itab OCCURS 0,
        matnr LIKE mara-matnr,
       END OF itab.
DATA : ok_code LIKE sy-ucomm.
CALL SCREEN 0200.
*&      Module STATUS_0200 OUTPUT
      text
MODULE status_0200 OUTPUT.
SET PF-STATUS 'Z200'.
ENDMODULE.                 " STATUS_0200 OUTPUT
*&      Module USER_COMMAND_0200 INPUT
      text
MODULE user_command_0200 INPUT.
CASE ok_code.
    WHEN 'BACK' OR 'UP' OR 'CANC'.
      LEAVE PROGRAM.
ENDCASE.
ENDMODULE.                 " USER_COMMAND_0200 INPUT
*&      Module mat_val INPUT
      text
MODULE mat_val INPUT.
SELECT matnr FROM mara INTO CORRESPONDING FIELDS OF TABLE itab
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      EXPORTING
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       VALUE_ORG              = 'S'
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        value_tab              = itab
    IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
ENDMODULE.                 " mat_val INPUT
<b>And this is flow logic..</b>
PROCESS BEFORE OUTPUT.
MODULE status_0200.
PROCESS AFTER INPUT.
MODULE user_command_0200.
PROCESS ON VALUE-REQUEST.
FIELD itab-matnr MODULE mat_val.

How to fill dropdown list in Adobe form

Hi Experts,
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Thanks,
Hans

Hello Arafat,
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I have included the following code in WDDOINIT method of the view:
data: handle1 type ref to if_wd_context_node,
begin of zstruct,
zktokd type kna1-ktokd,
end of zstruct,
zitab type table of zsttxecr.
handle1 = wd_context->get_child_node( name = 'DATA.NODE1' ).
select ktokd from kna1 into corresponding fields of zstruct.
append zstruct to zitab.
endselect.
handle1->bind_table( new_items = zitab ).
In the Adobe Form Designer, i have binded the node NODE1 to the enumerated drop down list from native web dynpro library. Still the drop down box is not getting populated.
Please let me know what is missing.
Thanks and Regards.

How to fill or erase a single pixel?

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