How to compute the ColorMatrix?

What's the preferred way to compute the ColorMatrix of a new camera?
Is it possible to compute the ColorMatrix from the ForwardMatrix?
It seems that the ColorMatrix can be computed from the ForwardMatrix using the following formula:
CM = WB * FM^{-1} * MW^{-1}
where:
- WB is the camera neutral values as a diagonal matrix
- FM is the forward matrix
- MW is the chromatic adaptation matrix
I tried this formula on some color profiles made by Adobe and compared with the existing ColorMatrix.
However, this formula yields a different result than the one existing in the profiles.
What am I doing wrong?

In fact the formula would be
=A/B-100%
or
=B/A-100%
given which percentage you which to know
I often use a differerent one:
=(B-A)/A ans of course I apply the percent format to the resulting cell.
I don't know whih is the more efficient.
Yvan KOENIG (VALLAURIS, France) dimanche 18 octobre 2009 12:58:27

Similar Messages

How to compute the sum of words(or bytes) in tables?

Sir
Now there are several million records in a database, I want compute the sum of words(or bytes) in the tables by query condition. I have used ADO to access database, and use this SQL sentence-- 'select length(clo1)+length(col2)+..+length(coln) from tablename where ..' --to get resultset, and then sum the result, the speed is slowly. How can i do it in great efficiency?
thanks

Increasing efficiency?
You revisit the requirement. Determine exactly what is needed and whether adding LENGHTs of columns provides a correct, never mind accurate, answer.
Oracle space utilisation, physical row size and so on, are vastly more complex than a simply adding lengths of columns together.

How to computer the row size of a table

Hi
How can i compute the row size of a table. My general Idea is
create table emp(
empno number(4),
ename varchar2(10),
hire_date date,
update_yn timestamp);
the character set is UFT8
how can i compute the size of this table
thanks

Hi,
for Avg. row length see this
SQL> desc dba_tables
Name                                      Null?    Type
OWNER                                     NOT NULL VARCHAR2(30)
TABLE_NAME                                NOT NULL VARCHAR2(30)
TABLESPACE_NAME                                    VARCHAR2(30)
CLUSTER_NAME                                       VARCHAR2(30)
IOT_NAME                                           VARCHAR2(30)
PCT_FREE                                           NUMBER
PCT_USED                                           NUMBER
INI_TRANS                                          NUMBER
MAX_TRANS                                          NUMBER
INITIAL_EXTENT                                     NUMBER
NEXT_EXTENT                                        NUMBER
MIN_EXTENTS                                        NUMBER
MAX_EXTENTS                                        NUMBER
PCT_INCREASE                                       NUMBER
FREELISTS                                          NUMBER
FREELIST_GROUPS                                    NUMBER
LOGGING                                            VARCHAR2(3)
BACKED_UP                                          VARCHAR2(1)
NUM_ROWS                                           NUMBER
BLOCKS                                             NUMBER
EMPTY_BLOCKS                                       NUMBER
AVG_SPACE                                          NUMBER
CHAIN_CNT                                          NUMBER
AVG_ROW_LEN NUMBER
AVG_SPACE_FREELIST_BLOCKS                          NUMBER
NUM_FREELIST_BLOCKS                                NUMBER
DEGREE                                             VARCHAR2(10)
INSTANCES                                          VARCHAR2(10)
CACHE                                              VARCHAR2(5)
TABLE_LOCK                                         VARCHAR2(8)
SAMPLE_SIZE                                        NUMBER
LAST_ANALYZED                                      DATE
PARTITIONED                                        VARCHAR2(3)
IOT_TYPE                                           VARCHAR2(12)
TEMPORARY                                          VARCHAR2(1)
SECONDARY                                          VARCHAR2(1)
NESTED                                             VARCHAR2(3)
BUFFER_POOL                                        VARCHAR2(7)
ROW_MOVEMENT                                       VARCHAR2(8)
GLOBAL_STATS                                       VARCHAR2(3)
USER_STATS                                         VARCHAR2(3)
DURATION                                           VARCHAR2(15)
SKIP_CORRUPT                                       VARCHAR2(8)
MONITORING                                         VARCHAR2(3)
CLUSTER_OWNER                                      VARCHAR2(30)
DEPENDENCIES                                       VARCHAR2(8)
SQL> Regards!

How to compute the italian codice fiscale

Is there anyone who can give me a PL/SQL or a package computing the italian codice fiscale getting in input Name, Sirname, birthdate, ...?
I suppose it exists and I don't want to reinvent the wheel.
My oracle version is 8.1.7 i
Thanks in advance!

Maybe
using http://www.paginainizio.com/service/strutturacodicefiscale.htm but NOT TESTED (just something to play with)
declare
/* input data */
nome    varchar2(50) := 'SUONOME';                       /* first name */
cognome varchar2(50) := 'COGNOME';                       /* last name */
nascita date         := to_date('19331122','yyyymmdd'); /* date of birth */
sesso   varchar2(1) := 'M';                             /* gender */
comune varchar2(4) := 'A123';                          /* birthplace code */
/* obtaining first/last name vowels and consonants */
nome_c varchar2(50) := translate(upper(nome),'~AEIOU','~');          /* first name consonants - vowels deleted */
nome_v varchar2(50) := translate(upper(nome),'~'||nome_c,'~');       /* first name vowels - consonants deleted */
cnome_c varchar2(50) := translate(upper(cognome),'~AEIOU','~');       /* last name consonants - vowels deleted */
cnome_v varchar2(50) := translate(upper(cognome),'~'||cnome_c,'~');   /* last name vowels - consonants deleted */
/* computing code components */
campo_1 varchar2(3) := substr(substr(nome_c,1,1)||substr(nome_c,3,1)||substr(nome_c,4,1)||nome_v,1,3);         /* 1st,3rd,4th first name consonant */
campo_2 varchar2(3) := substr(substr(cnome_c,1,1)||substr(cnome_c,2,1)||substr(cnome_c,3,1)||cnome_v,1,3);     /* 1st,2nd,3rd last name consonant */
/* vowels should be concatenated when there are not enough consonants -> how about DARIO FO ? DAI FO? */
campo_3 varchar2(2) := to_char(nascita,'YY');                                                                  /* last two digits of year of birth */
campo_4 varchar2(1) := substr('ABCDEHLMPRST',to_number(to_char(nascita,'MM')),1);                              /* month of birth converted */
campo_5 varchar2(2) := lpad(to_char(to_number(to_char(nascita,'DD')) + decode(sesso,'M',0,'F',40,100)),2,'0'); /* day of birth + 40 for women */
campo_6 varchar2(4) := comune;
/* concatenating code (without check character) */
codice varchar2(16) := campo_1 || campo_2 || campo_3 || campo_4 || campo_5 || campo_6;
/* conversion tables for check character computation */
caratt varchar2(36) := '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';                                      /* characters to be converted */
p_pari varchar2(72) := '000102030405060708090001020304050607080910111213141516171819202122232425'; /* corresponding conversion numbers for even positions */
p_disp varchar2(72) := '010005070913151719210100050709131517192102041820110306081214161022252423'; /* corresponding conversion numbers for odd positions */
/* auxiliary fields */
somma   pls_integer := 0;
posiz   pls_integer;
begin
for i in 1 .. 15
loop
    posiz := instr(caratt,substr(codice,i,1))); /* the position of the i-th code character in the conversion table */
    if mod(i,2) = 0 then
      somma := somma + to_number(substr(p_pari,2 * posiz - 1,2)); /* the corresponding number added to the sum for even code character positions */
    else
      somma := somma + to_number(substr(p_disp,2 * posiz - 1,2)); /* the corresponding number added to the sum for odd code character positions */
    end if;
end loop;
somma := mod(somma,26); /* the remainder of division */
codice := codice || substr(caratt,somma + 11,1); /* concatenating the check character */
dbms_output.put_line(codice);
end;Regards
Etbin
Edited by: Etbin on 24.12.2011 7:38
row changed to if mod(i,2) = 0 then

How to compute the percent change between 2 cells results

I'm trying to compute the percent of change (whether it be positive or negative) between the values in 2 cells, each of which is displaying the sum of a column of numbers entered manually.
I'm currently using the following formula, and it seems to be working, but I'd really like to know if I'm accomplishing the result using the "correct" method (i.e. the correct convention).
Any comments or corrections would be appreciated.
Current formula:
=Cell A/Cell B-100%
Is this the best method/formula?
Thanks in advance,
Ron Herrmann

In fact the formula would be
=A/B-100%
or
=B/A-100%
given which percentage you which to know
I often use a differerent one:
=(B-A)/A ans of course I apply the percent format to the resulting cell.
I don't know whih is the more efficient.
Yvan KOENIG (VALLAURIS, France) dimanche 18 octobre 2009 12:58:27

How to compute the equation-group?

I want to comupte one equation-group using labview.what can I do this?Provided that here are one
eqution-group,one equation is 6x-9y=29,the other is
-9x+14y=-43;how to solve this !thanks a lot!

I assume that you want to find an x and a y that solves the two equations.
You can solve one equation for y and then substitute what y equals into the second evuation to get a value for x. Then take the x value and sub into an original equation to find the y value.
If you are familiar with linear algebra, you can build an array of the coeficients then use Solve Linear Equations.vi . It is found in LabVIEW Full and Pro.

How to Compute the average six months of customer orders excluding the first orders

Hi all
I am writing some basic sql to generate some measures from a postgres database table that are going to be inserted into a SQL SErver table.
I have to two tasks where I am supposed to generate the average 6 months spend and average 1 year spend using the customer data but excluding the first time orders.
I have some sample data below:
CREATE TABLE orders
persistent_key_str character varying,
ord_id character varying(50),
ord_submitted_date date,
item_sku_id character varying(50),
item_extended_actual_price_amt numeric(18,2)
INSERT INTO orders VALUES ('01120736182','ORD6266073','2010-12-08','100856-01',39.90);
INSERT INTO orders VALUES('01120736182','ORD33997609','2011-11-23','100265-01',49.99);
INSERT INTO orders VALUES('01120736182','ORD33997609','2011-11-23','200020-01',29.99);
INSERT INTO orders VALUES('01120736182','ORD33997609','2011-11-23','100817-01',44.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','200251-01',79.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','200269-01',59.99);
INSERT INTO orders VALUES('01011679971','ORD89332495','2012-12-05','200102-01',169.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','100907-01',89.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','200840-01',129.99);
INSERT INTO orders VALUES('01120736182','ORD125155068','2013-07-27','201443-01',199.99);
INSERT INTO orders VALUES('01120736182','ORD167230815','2014-06-05','200141-01',59.99);
INSERT INTO orders VALUES('01011679971','ORD174927624','2014-08-16','201395-01',89.99);
INSERT into orders values('01000217334','ORD92524479','2012-12-20','200021-01',29.99);
INSERT into orders values('01000217334','ORD95698491','2013-01-08','200021-01',19.99);
INSERT into orders values('01000217334','ORD90683621','2012-12-12','200021-01',29.990);
INSERT into orders values('01000217334','ORD92524479','2012-12-20','200560-01',29.99);
INSERT into orders values('01000217334','ORD145035525','2013-12-09','200972-01',49.99);
INSERT into orders values('01000217334','ORD145035525','2013-12-09','100436-01',39.99);
INSERT into orders values('01000217334','ORD90683374','2012-12-12','200284-01',39.99);
INSERT into orders values('01000217334','ORD139437285','2013-11-07','201794-01',134.99);
INSERT into orders values('01000827006','W02238550001','2010-06-11','HL 101077',349.000);
INSERT into orders values('01000827006','W01738200001','2009-12-10','EL 100310 BLK',119.96);
INSERT into orders values('01000954259','P00444170001','2009-12-03','PC 100455 BRN',389.99);
INSERT into orders values('01002319116','W02242430001','2010-06-12','TR 100966',35.99);
INSERT into orders values('01002319116','W02242430002','2010-06-12','EL 100985',99.99);
INSERT into orders values('01002319116','P00532470001','2010-05-04','HO 100482',49.99);
Using the data, this is what I have done:
SELECT q.ord_year, avg( item_extended_actual_price_amt )
FROM (
SELECT EXTRACT(YEAR FROM ord_submitted_date) as ord_year, persistent_key_str,
min(ord_submitted_date) as first_order_date
FROM ORDERS
GROUP BY ord_year, persistent_key_str
) q
JOIN ORDERS o
ON q.persistent_key_str = o.persistent_key_str and
q.ord_year = EXTRACT (year from o.ord_submitted_date) and
o.ord_submitted_date > q.first_order_date AND o.ord_submitted_date < q.first_order_date + INTERVAL ' 6 months'
GROUP BY q.ord_year
ORDER BY q.ord_year
Can someone help me look into my query and see whether I am doing it the right way.
Thanks,
Ion

This more looks like a mysql code. Please try posting the question in mysql forums
http://forums.mysql.com/
This is one way of doing this in T-SQL
CREATE TABLE orders
persistent_key_str varchar(100),
ord_id varchar(50),
ord_submitted_date date,
item_sku_id varchar(50),
item_extended_actual_price_amt numeric(18,2)
INSERT INTO orders VALUES ('01120736182','ORD6266073','2010-12-08','100856-01',39.90);
INSERT INTO orders VALUES('01120736182','ORD33997609','2011-11-23','100265-01',49.99);
INSERT INTO orders VALUES('01120736182','ORD33997609','2011-11-23','200020-01',29.99);
INSERT INTO orders VALUES('01120736182','ORD33997609','2011-11-23','100817-01',44.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','200251-01',79.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','200269-01',59.99);
INSERT INTO orders VALUES('01011679971','ORD89332495','2012-12-05','200102-01',169.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','100907-01',89.99);
INSERT INTO orders VALUES('01120736182','ORD89267964','2012-12-05','200840-01',129.99);
INSERT INTO orders VALUES('01120736182','ORD125155068','2013-07-27','201443-01',199.99);
INSERT INTO orders VALUES('01120736182','ORD167230815','2014-06-05','200141-01',59.99);
INSERT INTO orders VALUES('01011679971','ORD174927624','2014-08-16','201395-01',89.99);
INSERT into orders values('01000217334','ORD92524479','2012-12-20','200021-01',29.99);
INSERT into orders values('01000217334','ORD95698491','2013-01-08','200021-01',19.99);
INSERT into orders values('01000217334','ORD90683621','2012-12-12','200021-01',29.990);
INSERT into orders values('01000217334','ORD92524479','2012-12-20','200560-01',29.99);
INSERT into orders values('01000217334','ORD145035525','2013-12-09','200972-01',49.99);
INSERT into orders values('01000217334','ORD145035525','2013-12-09','100436-01',39.99);
INSERT into orders values('01000217334','ORD90683374','2012-12-12','200284-01',39.99);
INSERT into orders values('01000217334','ORD139437285','2013-11-07','201794-01',134.99);
INSERT into orders values('01000827006','W02238550001','2010-06-11','HL 101077',349.000);
INSERT into orders values('01000827006','W01738200001','2009-12-10','EL 100310 BLK',119.96);
INSERT into orders values('01000954259','P00444170001','2009-12-03','PC 100455 BRN',389.99);
INSERT into orders values('01002319116','W02242430001','2010-06-12','TR 100966',35.99);
INSERT into orders values('01002319116','W02242430002','2010-06-12','EL 100985',99.99);
INSERT into orders values('01002319116','P00532470001','2010-05-04','HO 100482',49.99);
/*SELECT q.ord_year, avg( item_extended_actual_price_amt )
FROM (
SELECT EXTRACT(YEAR FROM ord_submitted_date) as ord_year, persistent_key_str,
min(ord_submitted_date) as first_order_date
FROM ORDERS
GROUP BY ord_year, persistent_key_str
) q
JOIN ORDERS o
ON q.persistent_key_str = o.persistent_key_str and
q.ord_year = EXTRACT (year from o.ord_submitted_date) and
o.ord_submitted_date > q.first_order_date AND o.ord_submitted_date < q.first_order_date + INTERVAL ' 6 months'
GROUP BY q.ord_year
ORDER BY q.ord_year
with cte as
(select *, row_number() OVER( partition by persistent_key_str order by ord_submitted_date) RN from orders )--where ord_submitted_date between dateadd(month,6,getdate()) and getdate())
SELECT year(cte.ord_submitted_date),avg(cte.item_extended_actual_price_amt) FROM cte
where rn<>1
group by year(cte.ord_submitted_date)
Satheesh
My Blog |
How to ask questions in technical forum

How Oracle compute the cardinality if no stats

Hi
9.2.0.6
very simple query
SELECT *
FROM TRFPRDTXT.F559215A
WHERE (QALOTN = :KEY1)
| Id | Operation | Name | Rows | Bytes | Cost |
| 0 | SELECT STATEMENT | | 2 | 392 | 2 |
| 1 | TABLE ACCESS BY INDEX ROWID| F559215A | 2 | 392 | 2 |
|* 2 | INDEX RANGE SCAN | F559215A_4 | 2 | | 1 |
Predicate Information (identified by operation id):
2 - access("F559215A"."QALOTN"=:Z)
optimizer_mode = choose
no stats on table/index
the question:
why cardinallity is 2 ?
Thanks for your help

There are two possibilities (as far as I know):
* dynamic sampling was introduced with 9.2, so the system could gather the statistics on the fly: http://blogs.oracle.com/optimizer/entry/dynamic_sampling_and_its_impact_on_the_optimizer
* if dynamic sampling is not active (I don't know the default in 9.2) then the cbo has to use some default values: http://download.oracle.com/docs/cd/B10500_01/server.920/a96533/stats.htm#25064
The index costing will follow the formula that Wolfgang Breitling first made public in 2002 (and which is discussed in detail in Jonathan Lewis' Cost Based Oracle, Chap. 4, S. 62 ff.):
cost = blevel + ceiling(leaf_blocks * effective index selectivity) + ceiling(clustering factor * effective table selectivity)Regards
Martin Preiss

RE: How to compute the balance stock

Hi,
user perform a consignment fill-up order a month ago.
When User perform a consignment pick-up with reference to the said consignment fill-up, the program is smart enough to detect the balance qty to be copy over to the pickup document.
My query is
Is there a FM that return the balance qty of that fill-up document?
This is unlike PO whereby you can get the balance stock in a single retreival from the PO history.
Thanks in advance

no reply

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hello all .. i have a big problem in my ipad version 5.1.1 that is when i connect the ipad with my computer the i tunes give me this message ( itunes couldnt connect to this ipad .an unknown error occurred (0xE8000012).) how i can solve this problem please
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Some of my songs are listed twice on my iPod itself. However, when I plug the iPod into my computer, the songs don't show up twice in iTunes when I click on device/music. How do I get rid of the duplicate songs on my iPod?

Some of my songs are listed twice on my iPod itself. However, when I plug the iPod into my computer, the songs don't show up twice in iTunes when I click on device/music. How do I get rid of the duplicate songs on my iPod?

that is odd! that should not be happening.
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The HP C4480 all in one series PRINTER that I got free with my i-Mac is printing TINY print despite that my computer is set at 13 font Helvetica. How to reset the printer to normal print?

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Is the Paper Size: set to US Letter and Scale: set to 100%
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How come whenever i plug my iPhone 5 into the computer the device will not show up on my itunes. This is the first time that i have done it since i updated to iOS7 and before i had no problem but now it just wont work.

How come whenever i plug my iPhone 5 into the computer the device will not show up on my itunes. This is the first time that i have done it since i updated to iOS7 and before i had no problem but now it just wont work.

Hi Celia51510,
Welcome to the Support Communities!
The article below may be able to help you with this issue.
Click on the link to see more details and screenshots.
I can't tell from your post if you are using a Windows or a Mac Computer.
Try deleting the iTunes application and redownloading the version you need below:
iTunes 11.1 Download for Mac
http://support.apple.com/kb/DL1614
iTunes 11.1 for Windows (64-bit)
http://support.apple.com/kb/DL1615
Cheers,
- Judy

How do I make my computer the primary for my iPhone 3G?

How do I make my computer the primary for my iPhone 3G? I am able to load music from my iTunes library but unable to delete music or create playlists on the phone from itunes. The computer I set the phone up with (primary) was destroyed.

There is no "main" or " primary" account.
Iphone, ipod touch, ipad will sycn with one and only one computer at a time. Syncing to another will indeed erase the current content from the device and replace with content from the new computer.
Copy everything from the old computer or your backup copy of the old computer, to the new one.

How to change the "home" computer for a iPod touch 3G (iOS 4.2.1) and an iPad 2(iOS5)? Music library has been already moved to iTunes on the new computer.

I have a iPod Touch (3rd gen) that has not upgraded it's OS beyond iOS4.2.1 even if I have tried connecting it into iTiunes I have a iPad2 which has been recently upgraded to iOS5 . Both were connected to a laptop computer that my husband will take with him when he moves to a different city. I will most probably buy a second laptop sometime, but meanwhile I want to tether my iPod touch and iPad 2 to my desktop PC for now. Before I took the plunge, I had a few questions which I am hoping this forum will help me answer
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on the touch I have very few apps and don't care about them. on the iPad I do have a couple of valuable apps that I want to hold on to- so have n't tinkered with it at all- what is the smoothest way for thsi transition? The iPad doesn't have any music on it at this time, but what to do if I want to transfer some?
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3. Why sin't my iTouch 3G upgrading- it's stuck on iOS4.2.1 but iTunes doesn't show any updates- even with chck updates button iTunes show that it is a current version.
thanks for reading through and any help that I can get to sort this mess out.

The recent release of iBooks 1.2.1 has corrected the problem of the missing Dutton edition of Winnie-the-Pooh. It may have been there with the previous install of iBooks but it would never display in the bookshelf. After updating iBooks to 1.2.1, the Dutton version (the one included with iBooks) suddenly appeared on the bookshelf. So it was a software glitch after all and not a fix Apple chose to document explicitly in the update.
Message was edited by: Rick Lang

How to compute the ColorMatrix?

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