Working with 2-Dim dynamic Arrays

[hawkair]

Hello

I have a dynamic array of Points (x,y,Color,OtherInfo...)

I want to replace the values of one point which is represented by an array, with other values in one sweep (if possible).

I do it like this:

Global $Pt = [[1075, 417, 15395562, "Idle0", 1, ""],[1115, 417, 15395562, "Idle1", 1, ""],[1155, 417, 15395562, "Idle2", 1, ""]]
    Local $tmp = [1040,427,15856113, "Idle0", 1, ""]
    _ArrayAssign($Pt, 0, $tmp)
;~  _ArrayAssign($Pt, 0, StringSplit('1040,427,15856113, "Idle0", 1, ""', ",", 2))
Exit    MsgBox(262144, "Array",_MyArrayToString($Pt, 0, 6))


Func _MyArrayToString(byref $aArray1, $Elt, $NumElts)
    Local $i, $s = ""
    For $i = 0 To $NumElts - 1
        $s &= $aArray1[$Elt][$i] & ","
    Next
    Return $s
EndFunc

Func _ArrayAssign(byref $aArray1, $Elt, $aArray2)
    Local $i
    For $i = 0 To UBound($aArray2) - 1
        $aArray1[$Elt][$i] = $aArray2[$i]
    Next
EndFunc

(OK, no error checking...)

Is there a faster way to do this? (ie sth like $Pt[0] = [1040,427,15856113, "Idle0", 1, ""])

Also how do I write _MyArrayToString if $NumElts is unknown? That is if I dont know the number of elements.

[Dan_555]

 

currently you are changing only the 1st element of the  array in the _ArrayAssign function. (because the $elt is always 0)

p.s. you should use easily distinguishable numbers during the test phase.

Use _ArrayDisplay to see the content of the array, like this:

#include <Array.au3>

Global $Pt = [[1075, 417, 15395562, "Idle0", 1, ""],[1115, 417, 15395562, "Idle1", 1, ""],[1155, 417, 15395562, "Idle2", 1, ""]]
    Local $tmp = [1,2,13, "mood0", 2, ""]
_ArrayDisplay($pt)
    _ArrayAssign($Pt, 0, $tmp)
;~  _ArrayAssign($Pt, 0, StringSplit('1040,427,15856113, "Idle0", 1, ""', ",", 2))

_ArrayDisplay($pt)

 MsgBox(262144, "Array",_MyArrayToString($Pt))


Func _MyArrayToString(byref $aArray1)
    Local $i, $j, $s = ""
    $elt=UBound($aArray1,1)
    $NumElts=UBound($aArray1,2)

    For $i = 0 To $Elt- 1
        for $j = 0 to $NumElts-1
            $s &= $aArray1[$i][$j] & ","
        Next
    Next
    Return $s
EndFunc

Func _ArrayAssign(byref $aArray1, $Elt, $aArray2)
    Local $i
    For $i = 0 To UBound($aArray2) - 1
        $aArray1[$Elt][$i] = $aArray2[$i]
    Next
EndFunc

 

Quote

Also how do I write _MyArrayToString if $NumElts is unknown? That is if I dont know the number of elements.

 

You have to do it somewhat like this:

Func _MyArrayToString(byref $aArray1)
    Local $i, $j, $s = ""
    $elt=UBound($aArray1,1)
    $NumElts=UBound($aArray1,2)

    For $i = 0 To $Elt- 1
        for $j = 0 to $NumElts-1
            $s &= $aArray1[$i][$j] & ","
        Next
    Next
    Return $s
EndFunc

Autoit  already has some built in functions to deal with the arrays, like:

 

_ArrayFromString()
_ArrayToString()
_ArrayConcatenate()

and others, maybe you can use them instead of writing your own ?

Edited June 17, 2023 by Dan_555

[hawkair]

 

Dan_555

Thank you for your quick response.

I woud like to make some points:

4 hours ago, Dan_555 said:

currently you are changing only the 1st element of the  array in the _ArrayAssign function. (because the $elt is always 0)

Yes I do because I want to demonstrate what I want.

I know that to change the 3rd Point I should use this call

_ArrayAssign($Pt, 2, $tmp)

 

4 hours ago, Dan_555 said:

Use _ArrayDisplay

_ArrayDisplay displays the whole array. I actually was interested in displaying just a selected Point which If I undestand correctly represents a row in the array.

Lastly the use of Ubound could be what I needed.

What would happen if one or more points have different number elements?

for example if the 3rd Pt was

[1155, 417, 15395562, "Idle2", 1, "","ClickPt1"]

with 7 Elements.

I checked and Ubound($Pt,2) returns 7 - the maximum number so it would fail  if I wanted to work on Pt1 or $Pt2 which have 6 Elements

I am sorry that I was not clear in describing what I want.

 

So if its clearer, lets Imagine we have a two dimensional array with rows and columns. The questions are:

1.Can I change a whole Row with a single command or does it have to be with a function like I am Using? Is there a shorter version of this function?

2.Can I display a whole Row with a single command or does it have to be with a function like I am Using? Is there a shorter version of this function?

3.If not all rows have the same number of columns (and Ubound(Array,2) does not work) how could I check the number of columns of my Row?

Is there something like: On error goto X, Array[r][c] = Val, and when c is out of bounds instead of the program crashing it transfers control to X?

 

(Edit: I was too quick to respond and then I took a closer look at _ArrayDisplay  and found that it can in fact help with number 2: ie
 

$p = 1
_ArrayDisplay($Pt, "",$p & ":" & $p) ;~ This displays the 2nd Point or Row

;~ and if I don't like the Output of _ArrayDisplay I can use

MsgBox (262144, "Point " & $p, _ArrayToString($Pt, ",", $p, $p)) ;~ This displays the 2nd Point or Row in a nicer way

(Edit no 2. After digging into _ArraytoString code and other Array functions to see how they tackled the problem of variable columns I came to the realization that the Whole array is reorganized to have the maximum number of columns that appear in any row. The Array functions view/display the missing/nondefined columns as Blank "")

However I think I still dont have answers to questions 1 and 3.

Edited June 17, 2023 by hawkair

[Dan_555]

Hi,

i do not know if it is possible to replace all the wanted items in one sweep, but what you could do is to delete one entry from an array and to insert a new one into it, something like:

#include <Array.au3>
Global $Pt = [[1075, 417, 15395562, "Idle0", 1, ""],[1115, 417, 15395562, "Idle1", 1, ""],[1155, 417, 15395562, "Idle2", 1, ""]]

_ArrayDisplay($pt)
_arrayDelete ($pt,1)
_arrayInsert($pt,1,'1040|427|15856113|Idle0|1|')
_ArrayDisplay($pt)

 

Edited June 17, 2023 by Dan_555

[jchd]

3 hours ago, hawkair said:

3.If not all rows have the same number of columns (and Ubound(Array,2) does not work) how could I check the number of columns of my Row?

By constructions, Array datatype are fixed-bounded from their declaration: only the number of rows can evolve by inserting/deleting rows. This implies that every row has the same number of columns.

In case that limitation can't fit your needs, you can switch to another data structure, for instance an array (or a Map) where one column (resp. the value) is itself a variable-size array.

[hawkair]

Thank you Dan_55

and jchd for the explanation.