determine a decimal in a set of data without looking at data

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  Hi all

  I write specific sets of data in table in a binary file, by adding each time so the file grows a set of data for each write operation.  I use the set file position function to make sure that I'm at the end of the file each time.

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• XY graph, initialize multiple groups of data and update a single set of data

  Hello

  I have developed a VI to control the coordinates XY of a platform using two engines. A version a little kwicks xy plotter.

  The detail that I could use help in is the following:

  1. I have 469 (or 400 ~ ish, there are two modes) of the discrete points to be initialized/connected to a XY graph such that a cursor on the XY graph can break discrete points. It's well done.

  2. I have to keep track of the current position of XY. It's also well done

  3. I have to keep track of the former x - y positions, where I was able to extract the data correctly. This is done by a switch.

  4. almost all VI has an a giant loop, although sequenced by 0 of the past a structure of case to another until you reach the final "global dummy.

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  At this point, my engines are terribly slowly, and I'll try to find a way to make them run faster. I am sure that the bottleneck is actually treatment for my data XY graph.

  My XY graph manages 3 sets of data,

  a. 469 discrete points (table 2 x 469) or 400 ~ ish discrete points (2 x 400 ~ table)

  position current c. (x, y)

  d. "rescued/captured" (2xincreasing up to table 469) positions

  everything has, b, c are inside the while loop. A switch determines the 'a' is used.

  the berries are grouped and then sent in the graph xy inside the while loop. I need the graph to be interactive to the cursor and data.

  Now, is that I wish to run things.

  1. selection from either a or b is responsible to the xy chart (by a switch).

  2 c is updated constantly.

  3 d is updated whenever the data was captured (by a switch).

  Basically, I need a and or b to run only ONCE at initialization of the (and when I decide to swtich from one to the other) and remains constant. In the same way D updates only when a switch has been pressed.

  I failed to find resources too tracing data to the xygraph, and drawing a live data on top selectively.

  I have attached an outdated version of my front as reference. I would like suggestions. Thank you in advance.

  -JLS

  
  

• Determine the decimal when precision is not defined in the structure of the table

  Hi all
  
  I'm trying to quickly determine the decimal precision of data in more than one column of the table. Fields can simply be defined as 'Number', but always decimal of the House. I don't mean to round to a certain place of the decimal, but rather to determine the maximum number of decimal places contained in the data of a particular field.
  
  I wonder if anyone of you know a trick to achieve?
  
  Thanks for the tips!

  andy_schnelle wrote:
  Hi all

  I'm trying to quickly determine the decimal precision of data in more than one column of the table. Fields can simply be defined as 'Number', but always decimal of the House. I don't mean to round to a certain place of the decimal, but rather to determine the maximum number of decimal places contained in the data of a particular field.

  I wonder if anyone of you know a trick to achieve?

  Thanks for the tips!

  Just a guess

  LENGTH(NUMBER - TRUNC(NUMBER)) - 1
  

  Something like that?

  with zz as(
  select 1.111 x from dual union all
  select 1.1 x from dual union all
  select 1.1111 x from dual union all
  select 1.01 x from dual union all
  select 1 x from dual
  )
  select
  MAX(LENGTH(x - TRUNC(x)) - 1)
  from zz;
  
  Output -- "4"
  

  Published by: Vanessa B on February 13, 2013 02:13

• Find the median of a set of data

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  3.00 - 3.99	41	45
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