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perl hash sort

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# 1  
Old 01-05-2011
perl hash sort [ SOLVED ]
I have a hash as below

Code:
'C1' => { 'x' => 41.9 , 'y' => 5.79999999999995}
'c2 288' => { 'x' => 428.05 , 'y' => 5.79999999999995}
'turn' => { 'x' => 493.25 , 'y' => 209.85}
'0001' => { 'x' => 530.1 , 'y' => 195.7}
'000001' => { 'x' => 235.25 , 'y' => 728.15}
'XYZ' => { 'x' => 56.65 , 'y' => 716.7}
'AS' => { 'x' => 78.7 , 'y' => 716.7}
'HOUSE' => { 'x' => 56.65 , 'y' => 708.3}
'dsf' => { 'x' => 89.75 , 'y' => 708.3}
'YIPPE' => { 'x' => 106.3 , 'y' => 708.3}
'DAY' => { 'x' => 150.45 , 'y' => 708.3}
'12' => { 'x' => 56.65 , 'y' => 699.9}
'INGG' => { 'x' => 95.25 , 'y' => 699.9}
'CORNER' => { 'x' => 122.85 , 'y' => 699.9}
'Light 049319' => { 'x' => 56.65 , 'y' => 691.6}
'(023117)' => { 'x' => 164.8 , 'y' => 678.35}
'01201' => { 'x' => 57.5 , 'y' => 5.79999999999995}

I need it to sort with x first and then y ... and then print as per x and y values key .
Please suggest if it is possible to sort an hash twice as required and then print ?
Last edited by chakrapani; 01-05-2011 at 09:17 AM..
# 2  
Old 01-05-2011
Here is an article on sorting a hash of hashes
# 3  
Old 01-05-2011
Thanks @citaylor it will only sort with one value at a time. I want to sort my data with X first and then same data be sorted by Y.
# 4  
Old 01-05-2011
Code:
perl -e'
      
 %h = (  
    C1 => { x => 41.9 , y => 5.79999999999995},
    "c2 288" => { x => 428.05 , y => 5.79999999999995},
    turn => { x => 493.25 , y => 209.85},
    "0001" => { x => 530.1 , y => 195.7},
    "000001" => { x => 235.25 , y => 728.15},
    XYZ => { x => 56.65 , y => 716.7},
    AS => { x => 78.7 , y => 716.7},
    HOUSE => { x => 56.65 , y => 708.3},
    dsf => { x => 89.75 , y => 708.3},
    YIPPE => { x => 106.3 , y => 708.3},
    DAY => { x => 150.45 , y => 708.3},
    12 => { x => 56.65 , y => 699.9},
    INGG => { x => 95.25 , y => 699.9},
    CORNER => { x => 122.85 , y => 699.9},
    "Light 049319" => { x => 56.65 , y => 691.6},
    "(023117)" => { x => 164.8 , y => 678.35},
    "01201" => { x => 57.5 , y => 5.79999999999995},
    );
    
    print map {
        $h{$_}{x}, " ", $h{$_}{y}, $/    
        }
        sort {
            $h{$a}{x} <=> $h{$b}{x} ||
            $h{$a}{y} <=> $h{$b}{y}
                } keys %h;
    '

With your data it outputs:

Code:
41.9 5.79999999999995
56.65 691.6
56.65 699.9
56.65 708.3
56.65 716.7
57.5 5.79999999999995
78.7 716.7
89.75 708.3
95.25 699.9
106.3 708.3
122.85 699.9
150.45 708.3
164.8 678.35
235.25 728.15
428.05 5.79999999999995
493.25 209.85
530.1 195.7

Last edited by radoulov; 01-05-2011 at 09:16 AM.. Reason: Special key strings quoted.
# 5  
Old 01-05-2011
Wow that is good ... Thanks Smilie

Could you let me know how I could change it to print data (first part) not x and y value ...
# 6  
Old 01-05-2011
You mean the hash keys?

Code:
perl -le'
      
 %h = (  
    C1 => { x => 41.9 , y => 5.79999999999995},
    "c2 288" => { x => 428.05 , y => 5.79999999999995},
    turn => { x => 493.25 , y => 209.85},
    "0001" => { x => 530.1 , y => 195.7},
    "000001" => { x => 235.25 , y => 728.15},
    XYZ => { x => 56.65 , y => 716.7},
    AS => { x => 78.7 , y => 716.7},
    HOUSE => { x => 56.65 , y => 708.3},
    dsf => { x => 89.75 , y => 708.3},
    YIPPE => { x => 106.3 , y => 708.3},
    DAY => { x => 150.45 , y => 708.3},
    12 => { x => 56.65 , y => 699.9},
    INGG => { x => 95.25 , y => 699.9},
    CORNER => { x => 122.85 , y => 699.9},
    "Light 049319" => { x => 56.65 , y => 691.6},
    "(023117)" => { x => 164.8 , y => 678.35},
    "01201" => { x => 57.5 , y => 5.79999999999995},
    );
    
    print join $/,
        sort {
            $h{$a}{x} <=> $h{$b}{x} ||
            $h{$a}{y} <=> $h{$b}{y}
                } keys %h;
    '

Ouput:

Code:
C1
Light 049319
12
HOUSE
XYZ
01201
AS
dsf
INGG
YIPPE
CORNER
DAY
(023117)
000001
c2 288
turn
0001

# 7  
Old 01-05-2011
yes That it ... Thanks Smilie
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