Sign in to follow this  
Followers 0
Vision

Search in a Array

7 posts in this topic

Hello,

is is possible to search in a array for a specific number ?

for exsample:

the array has 50 values from 11.5 - 2.0

and i want to find the number of array whats 6.0 or the nearest value in range of 6.0

so if there are only arrays with 5.8 and 6.1 he should pick 6.1 as value?

hope u understand my problem^^

Share this post


Link to post
Share on other sites



Vision,

This should give you the idea:

#include <Array.au3>

; Create array with random values from 0 to 10
Global $aArray[10]
For $i = 0 To 9
    $aArray[$i] = Random(0, 100, 1) / 10
Next

$iTgtValue = 6   ; Value to match
$nTgtDelta = 100 ; How close we have got to this value
$iTgtIndex = -1  ; Which index is closest to the value

For $i = 0 To 9
    ; How close is this element?
    $nDelta = Abs($iTgtValue - $aArray[$i])
    ; If it is the closest
    If $nDelta < $nTgtDelta Then
        ; Reset the results
        $iTgtIndex = $i
        $nTgtDelta = $nDelta
    EndIf
Next

; Display the result
_ArrayDisplay($aArray, "Nearest: " & $iTgtIndex)

Please ask if you have any questions. :unsure:

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

Share this post


Link to post
Share on other sites

Hi Vision,

for an exact search you can use _ArraySearch()

If you want a "similar" or "nearest hit" search, you need to write your own function.

:unsure:


Regards,Hannes[spoiler]If you can't convince them, confuse them![/spoiler]

Share this post


Link to post
Share on other sites

Beware of instability inherent to computations done in floating-point representations.

Then decide by yourself which one of 5.5 or 6.5 the function should select when supplied the value 6.0


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

Share this post


Link to post
Share on other sites

Vision,

This should give you the idea:

#include <Array.au3>

; Create array with random values from 0 to 10
Global $aArray[10]
For $i = 0 To 9
    $aArray[$i] = Random(0, 100, 1) / 10
Next

$iTgtValue = 6   ; Value to match
$nTgtDelta = 100 ; How close we have got to this value
$iTgtIndex = -1  ; Which index is closest to the value

For $i = 0 To 9
    ; How close is this element?
    $nDelta = Abs($iTgtValue - $aArray[$i])
    ; If it is the closest
    If $nDelta < $nTgtDelta Then
        ; Reset the results
        $iTgtIndex = $i
        $nTgtDelta = $nDelta
    EndIf
Next

; Display the result
_ArrayDisplay($aArray, "Nearest: " & $iTgtIndex)

Please ask if you have any questions. :unsure:

M23

thanks much ! works prfect :>

one additional question: is that possible to say that he cant select a value below the "6" just the neartest above 6 ?

Share this post


Link to post
Share on other sites

Vision,

is that possible to say that he cant select a value below the "6" just the neartest above 6 ?

Just adjust the comparision logic a bit: :>

For $i = 0 To 9
    ; Is element greater than or equal to the target value?
    If $aArray[$i] >= $iTgtValue Then
        ; So how close is this element?
        $nDelta = $aArray[$i] - $iTgtValue
        ; If it is the closest yet
        If $nDelta < $nTgtDelta Then
            ; Reset the results
            $iTgtIndex = $i
            $nTgtDelta = $nDelta
        EndIf
    EndIf
Next

And note what jchd said about floating point computations - you might not get the value you imagine if there are a couple of very close possibilities. ;)

All clear? :unsure:

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

Share this post


Link to post
Share on other sites

thank you.

everything clear.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0