by comparing the average centroid location to the location of the center of gravity measured

Similar Questions

• coordinates of the vertices of the center of gravity

  Hello!
  I have a polygon geometry
  and I would like to return only the coordinates X, Y of the summits of the centre of GRAVITY of the input geometry
  
  If I do this returns the geometry
  
  SELECT SDO_AGGR_CENTROID (SDOAGGRTYPE (GEOMETRY, 0.005)) OF LAND_AREA WHERE LAND_AREA.ID = 12725
  
  (SDO_GTYPE, SDO_SRID, SDO_POINT_TYPE (X, Y, Z), ANSDO_ELEM_INFO, SDO_ORDINATES)
  --------------------------------------------------------------------------------
  SDO_GEOMETRY (3001, SDO_POINT (579940,339, 4998349,92, 0), NULL, NULL, NULL)
  
  But if I do the query do not work
  
  SELECT t.X, t.Y
  Of
  LAND_AREA,
  TABLE (SDO_UTIL. GETVERTICES (SDO_AGGR_CENTROID (SDOAGGRTYPE (GEOMETRY, 0.005))) t
  WHERE
  LAND_AREA.ID = 12725;
  
  Can someone help me with this please.
  Thank you much in advance.

  This gives you what you want?

  SELECT
      CENTROID_VERTICES.X,
      CENTROID_VERTICES.Y
  FROM
      (
          SELECT
              SDO_AGGR_CENTROID(SDOAGGRTYPE(LAND_AREA.GEOMETRY, 0.005)) AS GEOMETRY
          FROM
              LAND_AREA
          WHERE
              LAND_AREA.ID = 12725
      ) CENTROID,
      TABLE(SDO_UTIL.GETVERTICES(CENTROID.GEOMETRY)) CENTROID_VERTICES
  

  I hope this helps.

• Why the centre of gravity is calculated incorrectly?

  I have an image which is an int16 signed with no hanging mask (outwardly hidden). The center of gravity IMAQ vi reports the KING Center instead of the answer for the center of gravity. Why would he do that?

  Steve_Block wrote:

  You have a perfect image. The calculation of the centre of gravity works perfectly with a simulated Gaussian beam. This is when a real picture of a camera is used to ensure that the centre of gravity is calculated incorrectly.

  Center of gravity is generally quite simple and straight forward - this should be independent of the content of the image.

  If you get the feeling that, in some cases it calculates correctly, then you can calculate it with pure primitive LabVIEW something like that:

  

  Compared to the IMAQ, it will be a bit slow, but you verify that centroid IMAQ calculated correctly or not for your images.

  Andrey.

• Is it possible to compare the contents of two folders

  Someone copied one of our folders with subfolders on the server from one place to the other. Now, some people use the old location and the new location. Is it possible to compare the two, to find the difference and merge them into a file without losing any information?

  There are third party tools that can automate a large part of it, but you still need to judge what part gets merged from which file.  One of those tools that I know is "Beyond Compare"

  Beyond Compare: <> http://www.scootersoftware.com/index.php >

  Not free, but in my humble OPINION is worth the price.

  HTH,

  JW

• How to compare the DOF of the OWNER. Table_name two DB in a single query?

  Hello community,

  I am trying to compare the DDL from a table that is located in two databases with the same name and the same pattern:

  select my_files.schema_name || '.' || my_files.table_name as table_name
       , case ( select dbms_lob.compare( dbms_metadata.get_ddl(one.object_type, one.object_name, one.owner)
                                       , dbms_metadata.get_ddl(two.object_type, two.object_name, two.owner)
                                       )
                  from all_objects  one
                     , all_objects@db_link  two
                 where one.object_type = 'TABLE'
                   and one.owner = my_files.schema_name
                   and one.object_name = my_files.table_name
                   and two.object_type = one.object_type
                   and two.owner = one.owner
                   and two.object_name = one.object_name
              )
           when 0 then 'Y'
           else 'N'
         end as ddl_equal_flag
    from my_files;
  

  When I run the query above in SQL Developer, I get results like:

  Table-name	DDL_EQUAL_FLAG
  MY_SCHEMA. TABLE_1	THERE
  MY_SCHEMA. TABLE_2	THERE
  MY_SCHEMA. TABLE_3	THERE
  etc.	etc.

  But I wonder if it really works... I suspect DBMS_METADATA. GET_DDL returns the DDL of the database where I am connected, regardless of the database link, I used. Is this correct?

  And if so, is there another approach that gives me the expected results?

  Your help is very appreciated!

  Best regards, Yvo

  I would not use DBMS_METADATA, but the DBA_TAB_COLUMNS query directly.

• Comparing the spfile and pfile

  Hi all

  11.2.0.3

  I want to compare my pfile_old generated a month ago and the spfile current, just to check if there have been changes.

  So, I converted my current spfile to pfile_new. To make the taskeasy...

  Then, I created an external table for this 2 files with the same name.

  create table pfile_old (text1 varchar2 (100))

  external organization (type oracle_loader default BDUMP directory

  access parameters (records delimited by newline)

  location ("pfile_old.txt"))

  reject the limit 1000;

  create table pfile_new (Text2 varchar2 (100))

  external organization (type oracle_loader default BDUMP directory

  access parameters (records delimited by newline)

  location ("pfile_new.txt"))

  reject the limit 1000;

  =================

  But when I compare the values, none are equal?

  Select text1 from pfile_old less select Text2 pfile_new;

  everything is selected in pfile_old.

  How can I fix this?

  Thank you

  zxy

  Have you looked at the actual data in both files to see what are the real differences?  It is impossible for us to guess what may be different between the files, because we have no idea how the original pfile has been created or maintained.  You have two files.  You know what lines you expect to be the same.  You know, or can know, what are the real differences.

  If, once you know why they are different and determine the algorithm you want to use for comparison, we would be happy to help you to implement this algorithm if you know enough PL/SQL to do.  But you'll have to do the legwork.

  Of course, discover that something has changed by looking at the spfile rather than through good change control process is rather crazy in and of itself.  In the past, you indicated that you are somehow responsible for a large system.  There is no universe in which it makes sense for a DBA of a real production system (not to mention one who claims to have sensitive data or to be 24 x 7) to be surprised by a change in initialization parameter.

  Justin

• problem comparing the 2 files reliable?

  Hi, I have to check two files if the contents of the two files are the same or not? The thing is the file is located on a server and when I download a second file I have to check if this file already exists on the server? If I have to download the second file on the server and check the contents of the two files there is a problem. the problem is if two files are identical, then download the second file is useless. so the approach I took was to compare the amounts of the two files but then sometimes the checksum is the same even when two content of the file is not the same so is possible to treat this situation with no probability of error.
  
  Published by: Denis on 11 March 2013 23:34

  >
  The only question is why it converts the hash in hexadecimal value? is it necessary?
  >
  Necessary? No - but the 'digest' method returns an array of bytes and outside Java which is not very useful.

          // get the hash value as byte array
          byte[] hash = algorithm.digest();
  

  The 'normal' use is to provide the digest as a hexadecimal string value. If you download files from the web, a lot of times they will provide a digest (MD5 or SHA1), you can use to check that the downloaded file was not damaged and that it is, in fact, the correct file. These sites provide the digest as a hexadecimal string value. That makes it easy to cut & paste in order to compare it with another value.

  In addition, copy the following code the 'calculateHashMessageDigest' method is declared to return a string

      public static String calculateHash(MessageDigest algorithm,
  

  With the digest as a hexadecimal string value makes it easier to manipulate.

• By comparing the differences files

  This question has been posted in response to the following article: http://help.Adobe.com/en_US/Dreamweaver/CS/using/WSc78c5058ca073340dcda9110b1f693f21-7edda .html

  I don't know about the use of FileMerge.app, but compare the file works with TextWrangler twdiff Mountain Lion.

  The location is HD:usr:local:bin:twdiff Macintosh.

  TextWrangler is a free text editor and the "little brother" of BBEdit. It can be obtained from http://www.barebones.com/products/TextWrangler/.

• By comparing the numbers on MAC worksheet cell text

  How to compare the content of text in a cell in a column with the text content of each cell in another column to check for duplication. After checking the first cell, I won't move to the next and repeat the operation for each cell in the first column, ultimately comparing each cell in the first column with each in the second

  A simple way to do this would be something like this:

  

  The formula for C2, filled to the bottom of the column, is:

  = IF (COUNTIF (A, B) ", TRUE," "")

  The formula in D2, filled to the bottom is:

  = IF (COUNTIF(B,A), TRUE,"" ")

  This requires that you compare the contents of a cell in column B with all the contents of each cell in A and vice versa.

  If you want to see if the contents of a cell in column B is contained within the contents of the cells, etc., then a more complicated approach would be necessary.

  SG

• What formula would I use to add all the other ranks in my spreadsheet. I want to compare the fees and expenses of 2015 since they are incurred for 2016

  On the same worksheet, I want a spreadsheet to compare spending 2015 totals by month in several categories to 2016 expenses when they occur. What is the best way to implement this worksheet? It is essentially a budget, but wants to see how the category spending increase or decrease all the months for 2016.

  Thanks for any help.

  Hi Bruddah,

  I would like to start by rearranging your table so that the amounts from here to 2015 and 2016 switch not in the column, as implied in your question.

  Vocabulary of the numbers:

  worksheet not sentence numbers

  Worksheet: A spreadsheet. Usually abbreviated to 'Document '.

  Leaf: a blank canvas on which are placed the tables and other objects. A Document has at least one and maybe more than one.

  Table: an object consisting of one or more cells, arranged in rows and columns.

  Take a look at the personal Budget template (file > new form model...), specifically the summary in the table of categories.

  It uses the formula: = SUMIF (Transactions::Category, A2, Amount)

  Since you want to compare the volumes in several CATEGORIES at the specific two-year MONTH, you will need SUMIFS, using three test values, pairs of condition.

  Syntax: = SUMIFS (sum of the values,test values,condition,test values,condition,test values,condition)

  I would like to know if it is enough information. If this isn't the case, I'll be later in the day to enter more specific details. In the meantime, a screenshot of your table and the lines of (at least) your transactions table header would be probably useful.

  Kind regards

  Barry

• How to compare the 2 versions of the same document in Pages?

  How to compare the 2 versions of the same document on Pages?

  There is no OS X Visual tool which can open two Pages document and show the differences between them - other than the human eye.

  What information are you interested in identify as different between the two documents? What specific version of Pages?

• In comparing the two last samples read in

  Hey guys,.

  before the start of my program to test a sample, to check whether its current temperature stable

  So, I read the information of my sample temperature very low frequency (once every 5 seconds) and basically I want to compare the last two samples I have read, and if they are the same allow the next part of the program to start.

  I thought that this could involve using the Labview collector function, but I can't see how I would implement it.

  Any help is very appreciated,

  Sam.

  use a registry node or shift of feedback.

  Write the value to the entry of feedback node and compare to the output

• Compare the voltage

  Hello.

  I created a VI in order to compare the measure. I start with a simple button.

  I want to replace the button with a myDAQ data. But read the data on sent myDAQ of data streams, and I need only one value? How to extract a value from the stream?

  Pascal

  Hi Pascal, see the attached VI (old version, but should open).

  Place your daq assistant as shown and see the results.

  Hope this is what you are looking for.

  Best regards, W

  P.S. I could not resist to show an alternative to the structure of your business

• How do you compare the data collected continuously?

  So, I'm stuck on the basic architecture, therefore, hoping that you can push took me.

  What I have is a VI that measures the tensions permanently, then, I have a flow of power from DAQ hardware data points.  What I WANT is to act on the data points of tension, only, which are larger than the previous points.  For example, I want to act on the first data point, since it will be the most important, since there is nothing to compare to, then I want to compare the points of data subsequent to the first, until there is a greater than the first data point.  Then, I want to compare tensions the NEW value more and so on, etc. and act only on the NEW larger value.

  Consider this list of data points and corresponding outcomes:

  2 LAW

  4 LAW

  3. DO NOTHING

  3. DO NOTHING

  4-DO NOTHING

  5 LAW

  4-DO NOTHING

  5-DO NOTHING

  4-DO NOTHING

  3. DO NOTHING

  6 LAW

  I've been watch combinations of them for WHILE loops and shift registers and the tables, but the table would get so huge so fast and the MIN/MAX value of the TABLE palette function would get pretty slow and I don't need to evaluate all previous data.  I just need to be able to identify the highest value and then compare it to the following values until there is a NEW larger value.  It's a bit like how the warriors would fight several opponents until they lost and then, there's a new champion, and all subsequent warriors are compared to the new champion and so on and so forth.

  You have any suggestions on how to achieve this?  I'm puzzled.

  Thank you

  Dave

  Yes, either case will work, I put it in the structure case just to show that you need to put in there if you want to use.

• Compare the table and out of the common elements

  Hello

  Can you help me to compare the two tables in the attached file in VI and out the elements common to the two tables?

  Thank you

  hiNi

  There is no wire table through the False State in the structure of your business.  Use the default value if unwired is selected for this tunnel. the default value for this tunnel is an array of empty strings.  Run the wire straight through, and Bob's your father's brother.