I am trying to print a hash of hash to a table in a log file in ASCII format. I have a hash, where its values are again a hash and its value is a list:
irb(main):057:0> h = {
irb(main):058:1* 'mode1' => {
irb(main):059:2* 'name1' => [2, 4],
irb(main):060:2* 'name2' => [54, 65]
irb(main):061:2> },
irb(main):062:1* 'mode2' => {
irb(main):063:2* 'name4' => [3, 0],
irb(main):064:2* 'name3' => [2, 1]
irb(main):065:2> },
irb(main):066:1* 'mode3' => {
irb(main):067:2* 'xys' => [100, 28]
irb(main):068:2> }
irb(main):069:1> }
I want it to be printed as:
**************************************************************************************
| No | Mode Name | Sub Name | Value 1 | Value 2 |
**************************************************************************************
| 1 | mode1 | name1 | 2 | 4 |
| | | name2 | 54 | 65 |
--------------------------------------------------------------------------------------
| 2 | mode2 | name4 | 3 | 0 |
| | | name3 | 2 | 1 |
--------------------------------------------------------------------------------------
| 3 | mode3 | xys | 100 | 28 |
**************************************************************************************
Is there an easy way to achieve this?
I am trying out my own way using printf, but I am not able to figure out how to center-justify, using a hash.each block and I am stuck when the inner hash has multiple keys. I don't need to print first and second columns.
I am using ruby 1.8.6 (2009-08-04 patchlevel 383).
Based on "What is the “right” way to iterate through an array in Ruby?":
puts "*" * <number of asterisks>
puts "|\tNo\t|\tMode\t|..."
puts "*" * <number of asterisks>
number = 1
for mode in h.keys.sort
first = true
for subkey in mode.keys.sort
if first
puts "|\t#{number.inspect}\t|\t#{h[mode].inspect}\t|\t#{subkey.inspect}\t|..."
first = false
else
puts "|\t\t|\t\t|\t#{subkey.inspect}\t|..."
end
puts "-" * <number of dashes>
end
number += 1
end
Related
I need to draw a square grid of size n to the console. The grid uses - for horizontal cell boundaries, | for vertical cell boundaries, and + for corners of each cell.
As an example, a size 3 grid should look like the following:
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
I was thinking of using a double for loop with outer loop iterating through rows and inner loop iterating through cols. each iteration of inner loop would be processing an individual cell. drawing | characters doesn't seem to hard but I'm not sure how I'd go about printing the - chars above and below a cell.
You could use Integer#times and String#*:
def print_grid(n)
n.times { print "+-"*n, "+\n", "| "*n, "|\n" }
print "+-"*n, "+\n"
end
print_grid(3)
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
=> nil
Alternatively:
def print_grid(n)
puts n.times.map{ "+-"*n + "+\n" + "| "*n + "|\n" }.join + "+-"*n + "+\n"
end
For a width of 3, you have a separator-row like this:
+-+-+-+
This can be sees as either:
3 - connected by and surrounded by +
4 + connected by -
The latter is a bit easier to express in Ruby:
width = 3
Array.new(width + 1, '+').join('-')
#=> "+-+-+-+"
The same works for the cell-row:
Array.new(width + 1, '|').join(' ')
#=> "| | | |"
Vertically, you have 3 cell-rows connected by and surrounded by separator-rows. (that should ring a bell) Just like before, this can also be expressed as 4 separator-rows connected by cell-rows.
Let's store our separator-row and cell-row in variables: (we also have to append newlines)
width = 3
separator_row = Array.new(width + 1, '+').join('-') << "\n"
cell_row = Array.new(width + 1, '|').join(' ') << "\n"
And define the grid:
height = 3
grid = Array.new(height + 1, separator_row).join(cell_row)
#=> "+-+-+-+\n| | | |\n+-+-+-+\n| | | |\n+-+-+-+\n| | | |\n+-+-+-+\n"
put grid
Output:
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
Here are two ways to do that.
Determine each character depending on whether the row and column indices are even or odd
def grid(n)
sz = 2*n+1
Array.new(sz) do |i|
Array.new(sz) do |j|
if i.even?
j.even? ? '+' : '-'
else # i is odd
j.even? ? '|' : ' '
end
end.join
end
end
puts grid(3)
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
puts grid(4)
+-+-+-+-+
| | | | |
+-+-+-+-+
| | | | |
+-+-+-+-+
| | | | |
+-+-+-+-+
| | | | |
+-+-+-+-+
Use an enumerator
def pr_grid(n)
enum = [*['+','-']*n, "+", "\n", *['|',' ']*n, "|", "\n"].cycle
((2+2*n)*(1+2*n)).times { print enum.next }
end
pr_grid(3)
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
| | | |
+-+-+-+
pr_grid(4)
+-+-+-+-+
| | | | |
+-+-+-+-+
| | | | |
+-+-+-+-+
| | | | |
+-+-+-+-+
| | | | |
+-+-+-+-+
For n = 3 the steps are as follows.
a = [*['+','-']*n, "+", "\n", *['|',' ']*n, "|", "\n"]
#=> ["+", "-", "+", "-", "+", "-", "+", "\n",
# "|", " ", "|", " ", "|", " ", "|", "\n"]
enum = a.cycle
#=> #<Enumerator: ["+", "-", "+", "-", "+", "-", "+", "\n",
# "|", " ", "|", " ", "|", " ", "|", "\n"]:cycle
enum.next #=> "+"
enum.next #=> "-"
enum.next #=> "+"
enum.next #=> "-"
enum.next #=> "+"
enum.next #=> "-"
enum.next #=> "+"
enum.next #=> "\n"
enum.next #=> "|"
enum.next #=> " "
and so on.
Just for fun and just as an example, here is a list of methods (to be optimized and debugged and maybe used within a class) that you can use also for filling a table.
#cell = '|'
#line = '-'
#cross = '+'
def build_row(content)
(content.zip [#cell]* content.size).flatten.prepend(#cell).join
end
def separator_from_content(content)
content.map { |e| #line * e.size + #cross }.prepend(#cross).join
end
def adjust_content_in(lines)
width = lines.flatten.max_by(&:size).size
lines.map { |line| line.map { |e| e << ' ' * (width - e.size) } }
end
def build_table(lines)
lines = adjust_content_in(lines)
separator = separator_from_content(lines.first)
mapped = lines.map { |line| build_row(line) }.zip([separator] * (lines.size) )
return mapped.flatten.prepend(separator).join("\n")
end
def empty_squared_table(n)
lines = n.times.map { n.times.map { ' ' } }
build_table(lines)
end
So, if you want to draw an empty table, can call:
n = 3
puts empty_squared_table(n)
# +-+-+-+
# | | | |
# +-+-+-+
# | | | |
# +-+-+-+
# | | | |
# +-+-+-+
Or you can fill in some text (more lines inside a cell not supported):
lines = [['so', 'you can', 'fill'], ['a table', 'given the content', '']]
puts build_table(lines)
# +-----------------+-----------------+-----------------+
# |so |you can |fill |
# +-----------------+-----------------+-----------------+
# |a table |given the content| |
# +-----------------+-----------------+-----------------+
So I have a document that has two nested arrays i.e.
foo.bars[].baz[]
I am trying to figure out how I can use graphana to group by bars and give me a count of bar's for each bar. So it would look something like:
| bars.id| count|
| 1 | 10 |
| 2 | 15 |
| 3 | 20 |
What I have tried is the following:
Group by bars.id
Add a Sum metric for bars.baz.id
Override the script value to return 1
While this does give me the count of the bars, it does so for all bars in the document and not grouped by the bars.id i.e.
| bars.id| count|
| 1 | 45 |
| 2 | 45 |
| 3 | 45 |
Any help to achieve this would be very helpful.
Now if this can be done I have another more complex problem. I have another collection let's call it bobs that is a child of the root document. Now bobs isn't nested under the bars array but it has a bar.id field. I would also like to sum this based on that i.e.
{
bobs: [
{bar_id: 1},
{bar_id: 2},
],
bars: [
{id: 1, bazes: []},
{id: 2, bazes: []}
]
}
In this case I would also like in the table:
| bars.id| bobs.count|
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
Is this possible?
I have:
hash = {"1"=>["A", "B", "C", ... "Z"], "2"=>["B", "C"], "3"=>["A", "C"]
My goal is to use hash as a source for creating a CSV with columns whose names are a letter of the alphabet and with rows hash(key) = 1,2,3 etc.
I created an array of all hash.values.unshift("")values that serve as row 1 (columns labels).
desired output:
| A | B | C | ... | Z |
1| A | B | C | ... | Z |
2| | B | C | ....... |
3| A | | C | ....... |
Creating CSV:
CSV.open("groups.csv", 'w') do |csv|
csv << row1
hash.each do |v|
csv << v.flatten
end
end
This makes the CSV look almost what I want but There is no spacing to get columns to align.
Any advice on how to make a method for modifying my hash that compares my all [A-Z] against each subsequent hash key (rows) to insert empty strings to provide spacing?
Can Class CSV do it better?
Something like this?
require 'csv'
ALPHA = ('A'..'Z').to_a.freeze
hash={"1"=>ALPHA, "2"=>["B", "C"], "3"=>["A", "C"]}
csv = CSV.generate("", col_sep: "|") do |csv|
csv << [" "] + ALPHA # header
hash.each do |k, v|
alphabet = ALPHA.map { |el| [el, 0] }.to_h
v.each { |el| alphabet[el] += 1 }
csv << [k, *alphabet.map { |k, val| val == 1 ? k : " " }]
end
end
csv.split("\n").each { |row| puts row }
output:
|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z
1|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z
2| |B|C| | | | | | | | | | | | | | | | | | | | | | |
3|A| |C| | | | | | | | | | | | | | | | | | | | | | |
If your values are truly single characters and don't need the CSV escaping, then I recommend bypassing CSV altogether and building the string in plain Ruby.
Assuming you want to align your lines correctly regardless of the number of digits in the row number (e.g. 1, 10, and 100), you can use printf style formatting to guarantee horizontal aligment (assuming your row number width never exceeds the value of ROWNUM_WIDTH).
By the way, I changed the hash's keys to integers, hope that's ok.
#!/usr/bin/env ruby
FIELDS = ('A'..'Z').to_a
DATA = { 1 => FIELDS, 2 => %w(B C), 3 => %w(A C) }
ROWNUM_WIDTH = 3
output = ' ' * ROWNUM_WIDTH + " | #{FIELDS.join(' | ')} |\n"
DATA.each do |rownum, values|
line = "%*d | " % [ROWNUM_WIDTH, rownum]
FIELDS.each do |field|
char = values.include?(field) ? field : ' '
line << "#{char} | "
end
output << line << "\n"
end
puts output
=begin
Outputs:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
1 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
2 | | B | C | | | | | | | | | | | | | | | | | | | | | | | |
3 | A | | C | | | | | | | | | | | | | | | | | | | | | | | |
=end
all = [*?A..?Z]
hash = {"1"=>[*?A..?Z], "2"=>["B", "C"], "3"=>["A", "C"]}
hash.map do |k, v|
[k, *all.map { |k| v.include?(k) ? k : ' ' }]
end.unshift([' ', *all]).
map { |row| row.join('|') }
#⇒ [
# [0] " |A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z",
# [1] "1|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z",
# [2] "2| |B|C| | | | | | | | | | | | | | | | | | | | | | | ",
# [3] "3|A| |C| | | | | | | | | | | | | | | | | | | | | | | "
# ]
Here's what I'm trying to do. I'm iterating through an array of strings, each of which may contain [] multiple times. I want to use String#match as many times as necessary to process every occurrence. So I have an Array#each block, and nested within that is an infinite loop that should break only when I run out of matches for a given string.
def follow(c, dir)
case c
when "\\"
dir.rotate!
when "/"
dir.rotate!.map! {|x| -x}
end
return dir
end
def parse(ar)
ar.each_with_index { |s, i|
idx = 0
while true do
t = s.match(/\[[ ]*([a-zA-Z]+)[ ]*\]/) { |m|
idx = m.end 0
r = m[1]
s[m.begin(0)...idx] = " "*m[0].size
a = [i, idx]
dir = [0, 1]
c = ar[a[0]][a[1]]
while !c.nil? do
dir = follow c, dir
ar[a[0]][a[1]] = " "
a[0] += dir[0]; a[1] += dir[1]
c = ar[a[0]][a[1]]
if c == ">" then
ar[a[0]][a[1]+1] = r; c=nil
elsif c == "<" then
ar[a[0]][a[1]-r.size] = r; c=nil
end
end
ar[a[0]][a[1]] = " "
puts ar
}
if t == nil then break; end
end
}
parse File.new("test", "r").to_a
Contents of test:
+--------+----------+-------------+
| Colors | Foods | Countries |
+--------+----------+-------------+
| red | pizza | Switzerland |
/--> /----> | |
| |[kale]/ | hot dogs | Brazil |
| | <----------------------\ |
| | orange |[yellow]\ | [green]/ |
| +--------+--------|-+-------------+
\-------------------/
Goal:
+--------+----------+-------------+
| Colors | Foods | Countries |
+--------+----------+-------------+
| red | pizza | Switzerland |
yellow kale | |
| | hot dogs | Brazil |
| green |
| orange | | |
+--------+-------- -+-------------+
Actual output of program:
+--------+----------+-------------+
| Colors | Foods | Countries |
+--------+----------+-------------+
| red | pizza | Switzerland |
yellow kale | |
| | hot dogs | Brazil |
| <----------------------\ |
| orange | | [green]/ |
+--------+-------- -+-------------+
(Since the array is modified in place, I figure there is no need to update the match index.) The inner loop should run again for each pair of [] I find, but instead I only get one turn per array entry. (It seems that the t=match... bit isn't the problem, but I could be wrong.) How can I fix this?
The output of my Json file is hash. I'm iterating over each line and using the tp gem to format it. My question is how do I format the width so that all my data is displayed neatly in the terminal.
I assume that it isn't formatting neatly because of the array within the hash.
File.open("output.json", 'a+') do |file|
1 data = { time_format: time_format, purchase: #purchase, quantity: #quantity, retail_price: #retail_price, purchasing_price: #purchasing_price }
0 file.puts data.to_json
1 end
transaction = File.open('output.json', 'a+').each do |line|
#transaction = JSON.parse(line)
if #transaction["time_format"].include?(review_date)
end
end
tp report
TIME_FORMAT | PURCHASE | QUANTITY | RETAIL_PRICE | PURCHASING_PRICE
-----------------|----------|----------|--------------|-----------------
11/23/2013 08:07 | ["lig... | [1] | [5.0] | [3.0]
11/23/2013 08:08 | ["lig... | [1] | [5.0] | [3.0]
11/23/2013 08:08 | ["lig... | [1, 1... | [5.0, 7.5... | [3.0, 4.0, 5....
11/23/2013 08:12 | ["lig... | [1] | [5.0] | [3.0]
11/23/2013 08:13 | ["lig... | [1] | [5.0] | [3.0]
11/23/2013 08:18 | ["lig... | [1] | [5.0] | [3.0]
Edit: The gem is called Table Print
There are a couple ways you can change the column widths.
To change all columns at once:
tp.set :max_width, 60
To change an individual column, print as usual but give some column options:
tp report, :include => [:purchase => {:width => 60}]