Two dimensional array?

EdKirk

I would like to display on my monitor 5 rows of 7 numbers each.

Please see my desired example, but cannot load the 2-D array.

EdKirk·· edk@wi.rr.com

kerryw

I don't know that spin supports multidimensional arrays. I couldn't find any examples in the docs. You can easily mimic it though if spin doesn't:

long Number[noparse][[/noparse]5*7] 'create a single dimesional array that stores the equivalent of a two-dimensional array

Repeat Rows From 1 to 5
__Repeat Cols From 1 to 7 'I noticed in your code sample that you have 'Rows' in this line, not 'Cols'
____VideoDisplay.dec(Number[noparse][[/noparse](Rows*5)+Cols]) 'here is where we mimic the 2 dimensional array, basically doing what a compiler does in languages that support multidemsional arrays
____VideoDisplay.out(32)
.....

Hope this helps.

Kerry

Post Edited (kerryw) : 6/5/2006 4:01:48 AM GMT

EdKirk

Kerry,

Very clever! I will do a 'long' to store two 16-bit numbers.

Why not four 8-bit numbers? How do it know? Things usually fall down; how do it know? I will never understand gravity.

Ed Kirkham
edkirk edk@wi.rr.com


Kerry,

Never mind my stupid question.· I thot at first that you were splitting the 32-bit numbers in half; but no you just made the list longer instead.·

Since I do not need 32-bit resolution for my numbers I guess I could have used 'word' instead of 'long'.

Ed


Post Edited (EdKirk) : 6/5/2006 12:32:52 PM GMT

Beau Schwabe

EdKirk,


Not a stupid question, you could actually split the 32-bit numbers in half to store your numbers.... likewise for splitting it in 4ths. Sort of like BCD format.


Long NumberArray[noparse][[/noparse]10]


...could represent 20 16-bit numbers or 40 8-bit numbers, but since you can specify a descriptor of long, word, or byte, the conversion
is partially done for you.

In terms of occupying memory...
long NumberArray[noparse][[/noparse]10] = word NumberArray[noparse][[/noparse]20] = byte NumberArray[noparse][[/noparse]40]


The remainder of the conversion is to do what kerryw suggests. You could expand this further to a 3-dimentional array or whatever met your needs...

X = 5     'Rows
Y = 7     'Columns
Z = 3     'Depth

word Number[noparse][[/noparse]X*Y*Z]     '105


Repeat Zz From 0 to Z-1 
  Repeat Yy From 0 to Y-1
    Repeat Xx from 0 to X-1
      VideoDisplay.dec(Number[noparse][[/noparse] Zz*(X*Y) + Yy*X + Xx + 1 ] )
      VideoDisplay.out(32)

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Beau Schwabe

IC Layout Engineer
Parallax, Inc.

Post Edited (Beau Schwabe (Parallax)) : 6/5/2006 3:07:30 PM GMT