loading an array

[kokopeli]

is it possible to load an unknown amount of elements into different arrays like this
r = 20
l = 72
For h = 1 To r
v = (r ^ 2 * r)_
- (r - h)
v = l * v
v = Format(v, "######.##")
Load one array with h & v here
load next array with h& v here

Print one array(h,v) here & vbTab & otherarray(h,v) here
Next h




End Sub

[funkyd77]

I'm not sure i understand fully what you want to do but here goes anyway:

Using dynamic arrays and the redim statement. Oh, i think only VB6 supports redim.




Dim FirstArray() As Single 'Or whatever
Dim SecondArray() As Single
Dim r As Integer
Dim l As Integer
Dim h As Integer
Dim v As Single
'then when you need to use the arrays:

r = 20
ReDim FirstArray(1 To 2, 1 To r)
ReDim SecondArray(1 To 2, 1 To r)
l = 72
For h = 1 To r
v = (r ^ 2 * r) _
- (r - h)
v = l * v
v = Format(v, "######.##")
FirstArray(1, h) = h
FirstArray(2, h) = v
SecondArray(1, h) = h
SecondArray(2, h) = v

'Print one; Array(h, v); here & vbTab & otherarray(h, v); here
MsgBox FirstArray(1, h) & FirstArray(2, h) & vbCrLf & SecondArray(1, h) & SecondArray(2, h)
Next h

[kokopeli]

r is the radius, so I want to print 1 thru 20, which is h, on left side of page,with results one tab to the right of that, then 21 thru 40,which is also h to the right side of the 1 - 20 with results, also with results one tab to the right.this wont show up right, but imagine 1 tab between the first two sets of numbers, then maybe a two or three tab space and then the next set ie. 21 thru 40

1 58473463 21 8878765
2 59678687 22 8956565
3 60765556 23 9065754
and so on. These are made up numbers just for examples.
what would I call this sort of prolem so I can look it up.

[funkyd77]

I would do it all in two loops, with one array. The bit i don't understand is that you have "for h = 1 to r" where r is 20, but then you talk about radii of 21 to 40. But forgetting that:

Dim ResultsArray() As Single 'Or whatever

Dim r As Integer
Dim l As Integer
Dim h As Integer
Dim v As Single
'then when you need to use the arrays:

r = 20
ReDim ResultsArray(1 To 2 * r)
l = 72
For h = 1 To 2 * r
v = (r ^ 2 * r) _
- (r - h)
v = l * v
v = Format(v, "######.##")
ResultsArray(h) = v

Next h

For h = 1 To r
MsgBox h & Chr(9) & ResultsArray(h) & _
Chr(9) & Chr(9) & Chr(9) & _
h + 20 & Chr(9) & ResultsArray(h + 20)
Next h


That would give you the display you are after.


Note, you don't have to use msgbox obviously, you could print it to a label, or textbox, or file. Whatever suits.

[kokopeli]

Thanks for the help. I messed with it a little bit, and it prints to the form just the way I wanted. I can't figure out how to get it into a textbox. paste it into a project and try it out. Number 40 results come up 0 though. Thanks again for the help. I am not so lost now.
Option Explicit
Private Sub Command1_Click()
Dim ResultsArray() As Single 'Or whatever

Dim r As Integer
Dim l As Integer
Dim h As Integer
Dim v As Single
'then when you need to use the arrays:

r = 20
ReDim ResultsArray(1 To 2 * r)
l = 72
For h = 1 To 2 * r - 1
v = (r ^ 2 * (ArcCos((r - h) / r))) _
- (r - h) * (Sqr(2 * (r * h) - h ^ 2))
v = l * v / 231
v = Format(v, "######.##")
ResultsArray(h) = v

Next h

For h = 1 To r
Print h & Chr(9) & ResultsArray(h) & _
Chr(9) & Chr(9) & Chr(9) & _
h + r & Chr(9) & ResultsArray(h + r)
Next h



End Sub

'Inverse Cosine
Function ArcCos(x As Double) As Double
ArcCos = Atn(-x / Sqr(-x * x + 1)) + 2 * Atn(1)
End Function

[funkyd77]

Just add a textbox to your form, it will be called text1 by default, as in this example. Make sure the "multiline" property is set to true and i would also set the "scrollbars" property to "2 - Vertical"

then:

Option Explicit
Private Sub Command1_Click()
Dim ResultsArray() As Single 'Or whatever

Dim r As Integer
Dim l As Integer
Dim h As Integer
Dim v As Single
Dim TempStr As String
'then when you need to use the arrays:

r = 20
ReDim ResultsArray(1 To 2 * r)
l = 72
For h = 1 To 2 * r - 1
v = (r ^ 2 * (ArcCos((r - h) / r))) _
- (r - h) * (Sqr(2 * (r * h) - h ^ 2))
v = l * v / 231
v = Format(v, "######.##")
ResultsArray(h) = v

Next h

TempStr = ""
For h = 1 To r

TempStr = TempStr & h & Chr(9) & ResultsArray(h) & _
Chr(9) & Chr(9) & Chr(9) & _
h + r & Chr(9) & ResultsArray(h + r) & vbCrLf
Next h

Text1.Text = TempStr


End Sub

'Inverse Cosine
Function ArcCos(x As Double) As Double
ArcCos = Atn(-x / Sqr(-x * x + 1)) + 2 * Atn(1)
End Function