StockFetcher Forums · Announcements · Many More Math Functions!<< 1 2 >>Post Follow-up
stockfetcher
963 posts
msg #45281
6/26/2006 1:59:50 PM

Below are new mathematical functions available for your filters:

  • round(indicator,decimal offset): Round to nearest value based on the decimal offset. By default, round() will round to the nearest integer. For example:

    Fetcher[show stocks where close is above 5.00 and add column round(close)]



    A negative, integer-based offset will shift the rounding to the "right" of the decimal point. For example, to round based on tenths you would enter a -1:

    Fetcher[show stocks where close is above 5.00 and add column round(close,-1)]



    A positive, integer-based offset will shift the rounding to the "left" of the decimal point. For example:

    Fetcher[show stocks where close is above 5.00 and add column round(close,1)]



  • ceil(indicator): Round up to the nearest integer.

    Fetcher[show stocks where close is above 5.00 and add column ceil(close)]



  • floor(indicator): Round down to the nearest integer.

    Fetcher[show stocks where close is above 5.00 and add column floor(close)]



  • mod(indicator,modulus): Return the remainder using the supplied modulus.

    Fetcher[show stocks where close is above 5.00 and add column mod(close,10)]



  • pow(indicator,power): Return the value of the indicator to the specified power.

    Fetcher[show stocks where close is above 5.00 and add column pow(RSI(14),1.5)]



  • exp(indicator): Return the value of e raised to the specified power.
  • exp10(indicator): Return the value of 10 raised to the specified power.
  • sin(indicator): Compute the sine of the specified value.
  • asin(indicator): Compute the arc sine of the specified value.
  • cos(indicator): Compute the cosine of the specified value.
  • acos(indicator): Compute the arc cosine of the specified value.
  • tan(indicator): Compute the tangent of the specified value.
  • atan(indicator): Compute the arc tangent of the specified value.

    For more math functions click here

    As always, let us know if you have any questions or would like to see any measures not listed above!

    Thank you,

    StockFetcher.com Support






  • nikoschopen
    2,824 posts
    msg #45288
    Ignore nikoschopen
    6/26/2006 3:31:00 PM

    Stockfetcher,

    You seemed to have left us with only one option when rounding, namely to round the result to only its nearest "whole" number. Yet the possiblity of rounding to a certain number of decimal places or "to the next higher number" cannot be ruled out. For example, I prefer to see the value of $26.67 rounded to $26.70 instead of $27.


    tomb
    267 posts
    msg #45290
    Ignore tomb
    6/26/2006 3:38:35 PM

    Hi,

    If non-integer based rounding is required, we recommend using something similar to:

    Fetcher[set{pricernd, round(close multiplied by 10) / 10}
    close is above 5.00
    and add column pricernd
    ]



    Tom
    StockFetcher.com Support



    nikoschopen
    2,824 posts
    msg #45291
    Ignore nikoschopen
    6/26/2006 3:45:22 PM

    Well, duh! Another display of my inexcusable ignorance... LOL


    nikoschopen
    2,824 posts
    msg #45292
    Ignore nikoschopen
    6/26/2006 4:07:02 PM

    Tomb,

    On a similar note, would it not be better to implement a user-defined parameter to designate the decimal places to be used? For instance, the following round function will return a decimal string rounded to the hundredths:

    round(close,2)




    tomb
    267 posts
    msg #45293
    Ignore tomb
    6/26/2006 4:18:02 PM

    Hi,

    We are looking into making that change.

    On a related note, we are currently looking into a bug with some invalid results from the round function. We'll post an update when this has been resolved.

    Thank you!

    Tom
    StockFetcher.com Support



    tomb
    267 posts
    msg #45297
    Ignore tomb
    6/26/2006 7:37:56 PM

    Hi,

    Please note the change to the usage of "round" in the first message of this thread.

    Thank you again, and please let us know if you run into any issues or have any questions.

    Tom
    StockFetcher.com Support



    nikoschopen
    2,824 posts
    msg #45327
    Ignore nikoschopen
    6/27/2006 3:00:39 PM

    Tomb,

    Has the bug been removed? There are times when I get erroneous values or no calculation at all. It's only after continually refreshing the screen the correct numbers make their belated appearance.


    tomb
    267 posts
    msg #45328
    Ignore tomb
    6/27/2006 3:21:02 PM

    Is there a particular example above that is producing problems, or do all of the examples show an error? Any additional information would definitely help.

    Tom
    StockFetcher.com Support



    nikoschopen
    2,824 posts
    msg #45329
    Ignore nikoschopen
    6/27/2006 4:14:30 PM

    Tomb,

    At this time, only the default value of 0 seems to work without a glitch. If I were to change the offset value to any other number, the result remains the same as the close. Hence it's my belief that the error isn't isolated to one set of "example". I have made screenies of round() using two different offset values (1 and -1) in the hope of making myself more clear.

    http://img128.imagevenue.com/img.php?loc=loc85&image=24477_round.jpg

    http://img101.imagevenue.com/img.php?loc=loc86&image=24484_round2.jpg


    StockFetcher Forums · Announcements · Many More Math Functions!<< 1 2 >>Post Follow-up

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