[Work] Ruby, check directory folder existence

if File.exists? path_out
    puts path_out+" exists"
else
#    puts path_out+" doesn't exist"
    Dir.mkdir(path_out)
end

[work] Free System Utilities for Window

Redmond lab

Free System Utilities for Window

http://redmondlab.googlepages.com/home

[work] gnuplot

C:\gnuplot\bin\wgnuplot.exe plot_gather.pl

file: plot_gather.pl
==============

set output "stoke_C_gather7.png"
#set terminal postscript eps color 22
set terminal png size 1200, 900

set xlabel "Roughness"
set ylabel "C"
plot [][] \
'curve.txt' using 1:2 with lines title "Roughtness-C"

[Work] Ruby, organize text file

files=["stokesCR025.txt",\
       "stokesCR05.txt",\
       "stokesCR10.txt",\
       "stokesCR15.txt",\
       "stokesCR20.txt",\
       "stokesCR25.txt",\
       "stokesCR30.txt",\
       "stokesCR35.txt",\
       "stokesCR40.txt",\
       "stokesCR45.txt",\
       "stokesCR50.txt"]
rough=[0.025, 0.050, 0.100, 0.150, 0.200, 0.250, 0.300,0.350,0.400,0.450,0.500]

num=files.size

fout=File.new("curve.txt", "w")
for j in 0..num-1
    fname=files[j]
    puts "fname "+fname
    roughness=rough[j]
   
    file = File.new(fname, "r")
    i=0
    while i<2 do
        line = file.gets
        i=i+1
    end
    value1=line.match(/^[0-9]* /)
    puts value1.to_s
    value2=line.match(/ [-,.,0-9]*$/)
    puts value2.to_s
    file.close   
   
    fout.puts roughness.to_s+"  "+value2.to_s
end
fout.close

[Ruby] make thumbnails

require "FileUtils"
require "ftools"

filetype = ".jpg"
path_in = Dir.pwd

path_out=path_in+"/thumbnail"
if !FileTest::directory?(path_out)
    Dir::mkdir(path_out)
end

dir=Dir.open(path_in)
a=Array.new(dir.collect.length)
num=0
dir.each do |file|
    if(file.length>filetype.length)
        if (file[file.length-4..file.length]==filetype)
            a[num]=file
            num=num+1
        end
    end
end
puts num

for i in 0..num-1
    fold = path_in + "/" + a[i]
    fnew_ppm = path_out + "/" + a[i][0..a[i].length-5]+".ppm"
    fnew_jpg = path_out + "/" + a[i][0..a[i].length-5]+".jpg"

    cmdline="convert -resize 200x -quality 100 "+fold+" "+fnew_ppm
    puts cmdline
    system("#{cmdline}")
   
    cmdline="convert -quality 100 "+fnew_ppm+" "+fnew_jpg
    puts cmdline
    system("#{cmdline}")

    puts "---------------------"
    File.delete(fnew_ppm)
end

[Ruby] resize image (portrait or landscape)

require "FileUtils"
require "ftools"

filetype = ".jpg"
path_in = Dir.pwd

path_out=path_in+"/size2900"
if !FileTest::directory?(path_out)
    Dir::mkdir(path_out)
end

dir=Dir.open(path_in)
a=Array.new(dir.collect.length)
num=0
dir.each do |file|
    if(file.length>filetype.length)
        if (file[file.length-4..file.length]==filetype)
            a[num]=file
            num=num+1
        end
    end
end
puts num

for i in 0..num-1
    fold = path_in + "/" + a[i]
    fnew_ppm = path_out + "/" + a[i][0..a[i].length-5]+".ppm"
    fnew_jpg = path_out + "/" + a[i][0..a[i].length-5]+".jpg"

    #check the image size, portrait or landscape
    cmdline="identify "+fold+" >t.txt"
    system("#{cmdline}")
    file = File.new("t.txt", "r")
    line = file.gets
    m=line.match(/[0-9]*x[0-9]*/)
    width=m.to_s.match(/^[0-9]*/)
    height=m.to_s.match(/[0-9]*$/)
   
    #resize to ppm
    if(width.to_s.to_i>height.to_s.to_i)
        puts "landscape"
        cmdline="convert -resize 2900x -quality 100 "+fold+" "+fnew_ppm
        puts cmdline
        system("#{cmdline}")   
    else
        puts "portrait"
        cmdline="convert -resize x2900 -quality 100 "+fold+" "+fnew_ppm
        puts cmdline
        system("#{cmdline}")   
    end
    file.close

    #convert ppm to jpg
    cmdline="convert -quality 100 "+fnew_ppm+" "+fnew_jpg
    puts cmdline
    system("#{cmdline}")
   
    puts "---------------------"
    #delete ppm
    File.delete(fnew_ppm)
end 

File.delete("t.txt")

[Ruby] file rename

filetype = ".jpg"

path = "."
prefix="slide_"

dir=Dir.open(path)
a=Array.new(dir.collect.length)
num=0
dir.each do |file|
    if(file.length>filetype.length)
        if (file[file.length-4..file.length]==filetype)
            a[num]=file
            num=num+1
        end
    end
end
puts num

count=0
for i in 0..num-1
    fnew=prefix+"%05d"%count+a[i][a[i].length-4..a[i].length]
    count=count+1
    old_file = path + "/" + a[i]
    new_file = path + "/" + fnew
    puts "old   "+old_file
    puts "new   "+new_file
    puts "--------------"
    File.rename(old_file, new_file) 
end

[Ruby] is a number

def is_a_number(s)
  s.to_s.match(/\A[+-]?\d+?(\.\d+)?\Z/) == nil ? false : true
end