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2D Array to display characters

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# 1  
Old 02-27-2008
2D Array to display characters
Hi All,

I have a series of number which indicates the coordinates
where 0104 indicates X-coord = 01 and Y-coord = 04 and i want characters to form up in accordance to the coordinates given.
Can any expert give me an example of 2D array code using csh or awk or perl such that the code can display the characters below ?

EG:
Inputfile:
0101 A
0102 B
0103 C
0104 D
0201 E
0202 F
0203 G
0204 H
0301 I
0302 J
0303 K
0304 L

Code:
04  D   H   L 
03  C   G   K
02  B   F   J
01  A   E   I  
   01  02  03

Last edited by Raynon; 02-27-2008 at 07:26 AM..
# 2  
Old 02-27-2008
This way:
Code:
awk '{
X[$2]=substr($1,1,2)
Y[$2]=substr($1,3)
}
END {
for ( y in Y)
   for ( x in X )
      if ( x == y  )
        {
        dx=sprintf("%d",X[x])
        dy=sprintf("%d",Y[y])
        if ( dx >= max_x )
           max_x=dx
        if ( dy >= max_y )
           max_y=dy
        f[dx,dy]=x 
        }
for (i=max_y;i>=1;i--)
    {
    printf("%2d",i)
    for (j=1;j<=max_x;j++)
       printf(" %2s",f[j,i])
    printf("\n")
    }
printf("   ")
for (j=1;j<=max_x;j++)
   printf("%2d ",j)
print
} ' file
 4  D  H  L
 3  C  G  K
 2  B  F  J
 1  A  E  I
    1  2  3

# 3  
Old 02-27-2008
Hi Klashxx,

Your code is really cool. Thks , it works up till a 9x9 matrix.
However, I tried the code with x-coordinates 10 and above and it doesn't work. Can you help ?

EG:
Inputfile:
0101 A
0102 B
0103 C
0104 D
0201 E
0202 F
0203 G
0204 H
0301 I
0302 J
0303 K
0304 L
1001 M
1002 N
# 4  
Old 02-27-2008
Ok, it was a conversion problem, so:
Code:
> cat file
0101 A
0102 B
0103 C
0104 D
0201 E
0202 F
0203 G
0204 H
0301 I
0302 J
0303 K
0302 L
0903 U
1001 M
1002 N
1104 Ñ
1504 F
2005 N

Code:
>awk '{
X[$2]=substr($1,1,2)
Y[$2]=substr($1,3)
}
END {
for ( y in Y)
   for ( x in X )
      if ( x == y  )
        {
        dx=X[x]+0
        dy=Y[y]+0
        if ( dx >= max_x )
           max_x=dx
        if ( dy >= max_y )
           max_y=dy
        f[dx,dy]=x 
        }
for (i=max_y;i>=1;i--)
    {
    printf("%.2d",i)
    for (j=1;j<=max_x;j++)
       printf(" %2s",f[j,i])
    printf("\n")
    }
printf("   ")
for (j=1;j<=max_x;j++)
   printf("%.2d ",j)
print
} ' file
05                                                           N
04  D  H                          Ñ           F               
03  C  G  K                 U                                 
02  B     L                                                   
01  A  E  I                    M                              
   01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Bye
Last edited by Klashxx; 02-27-2008 at 10:25 AM.. Reason: bug solved
# 5  
Old 02-27-2008
Hi Klashxx,

Strange, i tried to use yr modified code but some strange characters appear at the end of output in blue. Can you give some advice on that

Code:
$ cat input1
0101 A
0102 B
0103 C
0104 D
0201 E
0202 F
0203 G
0204 H
0301 I
0302 J
0303 K
0302 L
0801 Z
0903 U
1001 M
1002 N

$ awk -f 2d_array input1
04  D  H
03  C  G  K                 U
02  B  F  L                    N
01  A  E  I              Z     M
   01 02 03 04 05 06 07 08 09 10 1002 N

# 6  
Old 02-27-2008
Hi , change last print for printf("\n")
# 7  
Old 02-27-2008
Hi Klashxx,

Thks a million!!!!. It works!!
Thats real cool!!.
But i am a beginner in awk, can you explain your code such that i can comprehend better. Especially the looping part, which seems confusing to me.
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