NULL value in GeoRaster cells?

Hi all,
How to store a NULL value in GeoRaster cells ? For example i need to store raster data of NOAA image of continent of Australia, with null value for cells in the surrounding ocean.
Given the cell depth is 8 BIT U, then the range will be 0 to 255. But i need to assign NULL instead of any value within the range, to ocean cells.
I think the .setBlankCellValue does not help for this.
I do not think Oracle GeoRaster does not recognize Null cell value. But i don't know how.
The geoRaster documentation explain about SDO_GEOR.getNODATA, but how to set it ?
Or do i have to make some kind of alpha layer for this purpose ?
Please advise
Thank you for reading and commenting,
=Damon

Jeffrey,
>
1. setup NODATA value(s) or NODATA value
ranges. for this you can call:
sdo_geor.addNODATA
sdo_geor.getNODATA
sdo_geor.deleteNODATA.
this case, the NODATA value(s) must be in the range
of the cellDepth. in your case with 8bit unsigned, it
must be an non-negative integer in [0,255].
your are talking about NOAA image, I would suggest
you use 0 (zero) as NODATA for the ocean area. In
general, the good image pixels would not be zero.The thing is i need to preserve the whole range of possible value of the cell depth meaningful. Probably best example as oppose to NOAA images, is image derived from raster algebra (eg. substraction).
So i was considering the rest of your suggestion. Bitmap mask or alpha channel might help, BUT
among
sdo_geor.addNODATA
sdo_geor.getNODATA
sdo_geor.deleteNODATA
sdo_geor.setBitmapMask
sdo_geor.getBitmapMask
sdo_geor.mergeLayers
ALL are available in 11gR1 while only the sdo_geor.getNODATA that is available in 10gR2 (the one am using); correct me please. (this is based documents of both versions)
Are you saying that 10gR2 is too obsolete for these, and that i shud upgrade to 11gR1 ?
Please advise.
==================
Other than general requirement for raster in geospatial, that raster should provide NODATA or null value; my specific aim is for (again) focal operation of geoRaster. For example :
- an image of 512 rows x 1024 columns x 1 layer as input
- processed by focal operation (or filtered) by 3 x 3 filter, result is the same size but cells in the row 0, row 511, column 0, and column 1023 ALL have NODATA value
- similarly by 5x5 filter, row[0,1,510,511] and column[0,1,1022,1023] ALL have NODATA value
hope this helps,
JeffreyMany thanks and cheers
=Damon

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Hello;
I am having a problem with my insert query. My form, is passing the year (2010 and up) as a null value. I am using access (ugg) and I can't get it to accept this null value. I have tried setting required to no, and allow zero lenght, even deleted the table and remade it.. STILL I get this error:
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SQL
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VENDORERRORCODE
3
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<cfqueryparam value="#FORM.ExpirationYear#" cfsqltype="CF_SQL_VARCHAR">
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Hi
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"http://www.adobe.com/livedocs/coldfusion/6.1/htmldocs/tags-b20.htm" (have a look ).
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From your post I see you are using a 3rd party package to access the Excel SpreadSheets, you will have to look in your API for you 3rd party package and see if there is a method that will identify a blank row, if there is and it does not work, then you have to take that problem up with them. I know this is a pain, but it is the price we pay for 3rd party object use.
In the mean time, you can make a workaround by checking every column in your row and seeing if it is null, or perhaps even better: check and see if the trimmed value of each cell has a lenth of 0.

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Here you can find solution for this issue and its works for me......
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Greetings,
I'm using Business Object webi XiR3
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thanks.
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Best Regards,
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Hi Amith,
I have update your suggested one,but it's working few of the rows only..remainings rows some of cells still NULL only
Measure colmns is : Nom_SGD
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Movment : dynamic date calc by using $2-$1 oracle formula's
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I would prefer that the line connect the two adjacent values - 7/14 and 7/16.
Thanks!
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ELSIF GET_ITEM_PROPERTY(:system.cursor_item,DATATYPE) = 'DATE' THEN
IF GET_ITEM_PROPERTY(:system.cursor_item,COLUMN_NAME) = 'TS_TRANS_DATE' THEN
CLIENT_OLE2.SET_PROPERTY(cell, 'Value', TO_CHAR(TO_DATE(NAME_IN(:system.cursor_item)),'DD-MM-RRRR HH24:MI:SS'));
ELSE
     CLIENT_OLE2.SET_PROPERTY(cell, 'Value', TO_CHAR(TO_DATE(NAME_IN(:system.cursor_item)),'DD-MM-RRRR'));
END IF;
ELSE
CLIENT_OLE2.SET_PROPERTY(cell, 'Value', name_in(:system.cursor_item));
END IF ;
CLIENT_OLE2.SET_PROPERTY(cell, 'ColumnWidth', '20');
CLIENT_OLE2.SET_PROPERTY (font, 'Name', 'Times New Roman');
CLIENT_OLE2.SET_PROPERTY (font, 'Size', '14');
CLIENT_OLE2.RELEASE_OBJ(font);
CLIENT_OLE2.RELEASE_OBJ(cell);
next_item;
END IF;
END LOOP;
best regards
boris

Hi Gerd,
tks for yr remind.
i have another one question. can u help me ?
my trigger is use for export data to excel from data block. i feel it process slow too. because it is a one by one column/row insert.
how to enchance the performance from coding ?
i know that use table type in trigger for store a heap of data then insert to excel once. but i don't know how to implement. can u tell me how to do that .
tks a lot.
pls see below trigger is one by one insert.
PROCEDURE EXPORT_EXCEL IS
app CLIENT_OLE2.OBJ_TYPE;
workbooks CLIENT_OLE2.OBJ_TYPE;
workbook CLIENT_OLE2.OBJ_TYPE;
worksheets CLIENT_OLE2.OBJ_TYPE;
worksheet CLIENT_OLE2.OBJ_TYPE;
args CLIENT_OLE2.LIST_TYPE;
cell CLIENT_OLE2.OBJ_TYPE;
font CLIENT_OLE2.OBJ_TYPE;
patterns CLIENT_OLE2.OBJ_TYPE;
j INTEGER;
k INTEGER;
file_name_cl VARCHAR2(32767);
item_prompt VARCHAR2(32767);
fir_item VARCHAR2(80);
cur_item VARCHAR2(80);
list_index NUMBER (1);
user_cancel EXCEPTION;
BEGIN
-- create a new document
app := CLIENT_OLE2.CREATE_OBJ('Excel.Application');
CLIENT_OLE2.SET_PROPERTY(app,'Visible',1);
workbooks := CLIENT_OLE2.GET_OBJ_PROPERTY(app, 'Workbooks');
workbook := CLIENT_OLE2.INVOKE_OBJ(workbooks, 'add');
worksheets := CLIENT_OLE2.GET_OBJ_PROPERTY(workbook, 'Worksheets');
worksheet := CLIENT_OLE2.Invoke_OBJ(worksheets, 'Add');
go_block('TSCNTRMOV_HB');
j:=2; /* Represents row number */
k:=1; /* Represemts column number */
args:=CLIENT_OLE2.CREATE_ARGLIST;
     CLIENT_OLE2.ADD_ARG(args, j);
     CLIENT_OLE2.ADD_ARG(args, k);
     cell:=CLIENT_OLE2.GET_OBJ_PROPERTY(worksheet, 'Cells', args);
     CLIENT_OLE2.DESTROY_ARGLIST(args);
     CLIENT_OLE2.SET_PROPERTY(cell, 'Value', 'Container Movement Report');
     font := CLIENT_OLE2.GET_OBJ_PROPERTY (cell, 'Font') ;
     CLIENT_OLE2.SET_PROPERTY (font, 'Name', 'Times New Roman');
     CLIENT_OLE2.SET_PROPERTY (font, 'Size', '18');
     CLIENT_OLE2.SET_PROPERTY (font, 'Bold', True);
     CLIENT_OLE2.RELEASE_OBJ(font);
     CLIENT_OLE2.RELEASE_OBJ(cell);
     /* Add the column headings using item prompts */
     j:=4 ;
     fir_item := Get_Block_Property ( :SYSTEM.CURRENT_BLOCK, FIRST_ITEM );
     WHILE ( fir_item IS NOT NULL ) LOOP
          cur_item := :SYSTEM.CURRENT_BLOCK || '.' || fir_item ;
          item_prompt := GET_ITEM_PROPERTY(cur_item, label);
     args:=CLIENT_OLE2.CREATE_ARGLIST;
     CLIENT_OLE2.ADD_ARG(args, j);
     CLIENT_OLE2.ADD_ARG(args, k);
     cell := CLIENT_OLE2.GET_OBJ_PROPERTY (worksheet, 'Cells', args);
     font := CLIENT_OLE2.GET_OBJ_PROPERTY (cell, 'Font') ;
     patterns := CLIENT_OLE2.GET_OBJ_PROPERTY (cell, 'INTERIOR') ;
CLIENT_OLE2.DESTROY_ARGLIST(args);
     CLIENT_OLE2.SET_PROPERTY(cell, 'Value', item_prompt);
     CLIENT_OLE2.SET_PROPERTY(cell, 'ColumnWidth', '20');
     CLIENT_OLE2.SET_PROPERTY(patterns, 'ColorIndex', '6');
CLIENT_OLE2.SET_PROPERTY (font, 'Name', 'Times New Roman');
     CLIENT_OLE2.SET_PROPERTY (font, 'Size', '14');
     CLIENT_OLE2.SET_PROPERTY (font, 'Bold', True);
     CLIENT_OLE2.RELEASE_OBJ(font);
     CLIENT_OLE2.RELEASE_OBJ(cell);
     fir_item := GET_ITEM_PROPERTY( cur_item, NEXTITEM ) ;
     k := k + 1 ;
     END LOOP;
     go_block('TSCNTRMOV');
first_record ;
j:=5; /* Represents row number */
k:=1; /* Represemts column number */
     LOOP
          --FOR k IN 1..38
          --LOOP
          WHILE (GET_ITEM_PROPERTY(:system.cursor_item,VISIBLE) <> 'TRUE') LOOP
               IF NAME_IN(:system.cursor_item) IS NOT NULL THEN
--     WHILE (NAME_IN(:system.cursor_item) IS NOT NULL) LOOP
          args:=CLIENT_OLE2.CREATE_ARGLIST;
          CLIENT_OLE2.ADD_ARG(args, j);
          CLIENT_OLE2.ADD_ARG(args, k);
          cell := CLIENT_OLE2.GET_OBJ_PROPERTY (worksheet, 'Cells', args);
          font := CLIENT_OLE2.GET_OBJ_PROPERTY (cell, 'Font') ;
     CLIENT_OLE2.DESTROY_ARGLIST(args);
IF GET_ITEM_PROPERTY(:system.cursor_item,COLUMN_NAME) = 'TS_IMP_TYPE' THEN
               IF NAME_IN(:system.cursor_item) = 'EI' THEN
                    list_index := 1;
               ELSIF NAME_IN(:system.cursor_item) = 'LI' THEN
                    list_index := 2;
               ELSE
                         list_index := 3;
                    END IF;
                    CLIENT_OLE2.SET_PROPERTY(cell, 'Value', GET_LIST_ELEMENT_LABEL('TSCNTRMOV.TS_IMP_TYPE',list_index));
               ELSIF GET_ITEM_PROPERTY(:system.cursor_item,DATATYPE) = 'DATE' THEN
          IF GET_ITEM_PROPERTY(:system.cursor_item,COLUMN_NAME) = 'TS_TRANS_DATE' THEN
               CLIENT_OLE2.SET_PROPERTY(cell, 'Value', TO_CHAR(TO_DATE(NAME_IN(:system.cursor_item)),'DD-MM-RRRR HH24:MI:SS'));
          ELSE
               CLIENT_OLE2.SET_PROPERTY(cell, 'Value', TO_CHAR(TO_DATE(NAME_IN(:system.cursor_item)),'DD-MM-RRRR'));
               END IF;
ELSE
               CLIENT_OLE2.SET_PROPERTY(cell, 'Value', name_in(:system.cursor_item));
               END IF ;
     CLIENT_OLE2.SET_PROPERTY(cell, 'ColumnWidth', '20');
     CLIENT_OLE2.SET_PROPERTY (font, 'Name', 'Times New Roman');
          CLIENT_OLE2.SET_PROPERTY (font, 'Size', '14');
          CLIENT_OLE2.RELEASE_OBJ(font);
          CLIENT_OLE2.RELEASE_OBJ(cell);
END IF;
NEXT_ITEM;
k := k + 1 ;
     END LOOP;
     j:=j+1;
     k:=1;
     IF :system.last_record = 'TRUE' THEN
     exit;
     ELSE
     next_record;
     END IF;
     END LOOP;
--CLIENT_OLE2.SET_PROPERTY(app,'Visible',1);
CLIENT_OLE2.RELEASE_OBJ(worksheet);
CLIENT_OLE2.RELEASE_OBJ(worksheets);
     /* release workbook */
     CLIENT_OLE2.RELEASE_OBJ(workbook);
     CLIENT_OLE2.RELEASE_OBJ(workbooks);
     /* Release application */
     CLIENT_OLE2.RELEASE_OBJ(app);
     EXCEPTION
     WHEN user_cancel THEN
     RAISE;
END;

Geting null values from request

hi!
i m producing this code through out.println() method in my page and then using java script
i am submiting this page to another page
<td width="56%"><textarea name="question_no_1"></textarea></td>
<input name="question_no_1_radio1" type="radio" value="radio"></td>
<td width="59%"> <textarea name="question_no_1_ans1"></textarea></td>
<input type="radio" name="question_no_1_radio2" value="radio"></td>
<td><textarea name="question_no_1_ans2"></textarea></td>
<input type="radio" name="question_no_1_radio3" value="radio"></td>
<td><textarea name="question_no_1_ans3"></textarea></td>
<input name="question_no_1_radio4" type="radio" value="radio"></td>
<td><textarea name="question_no_1_ans4"></textarea></td>
but when i submit it to the other page and try to retrieve value of parameter "question_no_1"
through the bellow statement it shows a null value but i have given a value previously by
typing a question in it
System.out.println("the Body Of The First Question Is "+request.getParameter("question_no_1"));
can anybody help me what is going on here.
also if i try to normaly submit first page (ie <form="form1" method="post" action="other_jsp_page.jsp"> ) then the statement in the next page gives me the correct value but
i have to submit the first paper through java script.
if u want to see full detail of my code then go to the following link
http://forum.java.sun.com/thread.jsp?thread=309254&forum=45&message=1237097
thanx in advance

OK, your problem is that you are not submmiting the values to the other page. When you do the
--> document.forms[0].submit();
in JavaScript, the form has to action defined
--> <form name="form1" method="" action="">
So, the page does nothing. The line following the submit just changes the location of the page, IT DOES NOT POST the values.
One solutions is the following:
1.- define an action for your form:
<form name="form1" method="POST" action="'save_paper.jsp">
2.- Then create a JavaScript function that validates the fields and simply return "true" if the form is correct, and false if there is a problem (just a little modification of the one you have).
3.- Then modify your submit button:
Instead of:
<input type="button" name="Save" value="Save" onClick="validateField()">
Try:
<input type="SUBMIT" value="Save" onclick="validateField();">

Is it possible to easily view the actual (not displayed) value of a cell?

Is it possible to easily view the actual value of a cell calculated by a formula, not the displayed value after it has been rounded off?
For instance, if you enter the number 1.23456789 and display it rounded to 3 decimal places, you can still see the full, actual value in the formula bar:
The problem arises when you reference that number in a formula: you can't see the underlying value (even though it's obviously known to Numbers):
Is there a way to get the formula bar (or a tooltip) to show the full, unrounded value? Changing the display to more decimal places is not very convenient, especially on big spreadsheets. Maybe it could be done via AppleScript?
A related issue arises when you try to look at the sum or average of a number: if the numbers being summed have the same number of rounded decimals, the sum displayed is rounded too. I find this very annoying: I want to see the actual value, not how my spreadsheet may be displaying it in that cell.
Although, curiously, rounding to any number of decimals as long as they are not all the same displays the full, correct underlying values:
Has anyone come up with workarounds for these issues?

I did it with an AppleScript.
Now any time I have a cell or cell range selected, I do one click (AppleScript menu > Display Value at Full Precision), and it shows me a popup alert that simply reads:
     rowname : columnname
     value
Here's the script:
tell application "Numbers"
          try
                    set selectedTables to (tables of sheets of front document whose selection range is not missing value)
                    repeat with selectedTable in selectedTables -- tables of each sheet
                              if contents of selectedTable is not {} then -- the list is not empty, it's the selected sheet
                                        set selectedCells to cells of selection range of (get item 1 of selectedTable)
                                        repeat with i in selectedCells -- each selected cell
                                                  set {selectedRow, selectedColumn, selectedVal} to {row, column, value} of i
--                                                  display alert "value of " & name of selectedRow & " : " & name of selectedColumn & " (" & address of selectedRow & ":" & address of selectedColumn & ")" message selectedVal
display alert name of selectedRow & " : " & name of selectedColumn message selectedVal
                                        end repeat
                                        return
                              end if
                    end repeat
          on error eMsg number eNum
display alert eMsg
          end try
end tell
( Props to Jacques Rioux who posted code to get me started at https://discussions.apple.com/thread/3964938 )

Not to display the null values from data base

Hiiii.
In a jsp file i have ten check boxes.The jsp file is mapped to a servlet file for parameter requesting and to
store it in DB.
The unchecked box values has null values.All the values are store in a Mysql DB table.
Again i have to display it in a jsp page from table.
The problem am facing was,how can i display only the values in a row.it must not display the null values and the crresponding column name.
Or any other way is their like below
How i can retrieve only the selected check boxes from tht jsp file.and store in backend.
Thanks in Advance
regards,
satheesh kannan

Here is a rough example that may give you some ideas:
On the JSP page:
<%if(myData.getFirstName()!=null){%>
Your First Name'
<input type="text" name="firstName" value="<%=myData.getFirstName()%>">
<%}%>
In the servlet:
String firstName= request.getParameter("firstName");
if(firstName!=null){
//write it to the database
}

NULL value in GeoRaster cells?

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