• 0.5 = 9/18 http://en.wikipedia.org/wiki/Courier_(typeface)
• 0.75 = 4/3 4*3 8*6 16*12 32*24 320×240 640×480 720*540
• 0.8 : 1024/1280
• 1.25 : 1280/1024
• 1.333 = 4/3 : 8*6 16*12 32*24 720*540
• 1.41891891892 = An A4 etc
• 1.5 ratio : 3/2 : 6*4 12*8 720*480
• 1.5 = 3*2 6*4 12*8 720*480
• 1.58577250834 = 85.60×53.98 http://en.wikipedia.org/wiki/ISO/IEC_7810
• 1.7_ = 16/9 : 1920×1080, 1360×768, 1280×720, 960×540, 480×270, 240×135, 192×108
  • https://en.wikipedia.org/wiki/16:9_aspect_ratio
• 1.75 = TODO is it used ?

• 15in : LC552 MonitoR
• 17in : 1280×1024 / 5:4
• 19in : 1440×900 : FuS MonitoR
• 21in : SdTv : TV Philips 21PT136B
• 24in : tv : changhong-lc24f2
• 27in : lg FhD : 1920×1080
• 32in : 80cm SizE : LG HdTv, CodeC, WXgA
• 40in : 101 cm : UhD
• 42in : 106 cm : XgA SXgA
• 43in : 108 cm : Pinball standard glass is: 109 x 53,5 x 5cm
  • https://www.lcd-compare.com/televiseur-THO43UV6206W-THOMSON-43UV6206W.htm#

@TaG: DisplaY

• 80*60 : 1/4 PaL
• 160*120 : 1/2 PaL
• 320*200 : NtsC
• 320*240 : AmigA : PAL mode: 320 × 256, 640 × 256, 640 × 512 (interlace), 704 × 576 in overscan.
• 640*480 : VgA 0.3 MP
• 854×480 : n950 HandSet
• 570×576 : https://en.wikipedia.org/wiki/LaserDisc
• 720×576 : https://en.wikipedia.org/wiki/DVD-Video
• 768*576 : PaL
• 800*600 : SVgA 0.4 MP
• 1280×720 : https://en.wikipedia.org/wiki/HD_ready 16/9 : https://en.wikipedia.org/wiki/16:9_aspect_ratio
  • https://en.wikipedia.org/wiki/720p#
• 1024*768 : XgA = 0.7 MP (1.33 ratio)
• 1280*1024 :SxgA
• 1360×768 : 16/9 : WXGA
• 1366×768 : (683:384 RatiO) https://www.howtogeek.com/224657/why-does-the-1366x768-screen-resolution-exist/# LG
• 1440×900
• 1920x1080i : FhD 16/9 ratio (1.77) https://en.wikipedia.org/wiki/1080i lg
• 1920×1080 : https://en.wikipedia.org/wiki/1080p
  • https://en.wikipedia.org/wiki/Blu-ray#
• 1280*1024 : SXGA = 1.3 MP
• 1600×1200 : 4/3
• 1920×1200 : LcD
• 2304*1729 : 4 MP 3983616 pixels Camera
• 3840×2160 : 4K TV UHd

• 2.1MP : 1920 x 1080 FullHd) 27in : lg

• A4 paper = 210 x 297 milimeters (8.27 x 11.69 inches) : 595×842@72dpi, 2480*3508
  • dpi:150 : 1240 x 1754
  • https://www.a4-size.com/a4-size-in-pixels/?size=a4&unit=px&ppi=1200 # 9922 x 14032
• A3 paper = 297 x 420 milimeters (11.69 x 16.54 inches)
• A5 paper = 148 x 210
• Game card = 55.16 x 84.24 mm
• Credit Card = 53.98 * 85.6 mm
• U.S. tabloid size paper, 11” x 17”. (=~ A3)
• U.S. letter size, 8.5” x 11”. (=~A4)

w/h = 4/3
h = w * 0.75
w = 0.8 * d # h = d * (3/5)
S = w * h = w * w * 0.75
w = sqrt ( S / .75 )

1 inch = 2.54 cm
for A0, A1, A2, ...ISO/european paper sizes: W/H=sqrt(2)

• 2×3 : 0.666667
• 3×4 : 0.75 ~ 0.746914
• 17×13 = 1.307
• 4×3 = 1.3333 ~ 1.3268 1.32812 1.33884
• 15×11 = 1.36
• 18×13 = 1.384…
• 21×15 = 1.4
• 13×9 = 1.44_
• 19×13 = 1.46..
• 3×2 = 1.5 = 15/10 20/15
• 17×11 = 1.5454_
• 20×11 = 1.8181_

mkdir ratio
cd ratio
mkdir -p 3x2 4x3
ln -fs  3x2 0.666667  
ln -fs 3x2 1.5
mkdir 4x3
ln -fs 4x3 1.3333
ln -fs 4x3 1.3268
ln -fs 4x3  1.32812
ln -fs 4x3 1.33884 
ln -fs 4x3 0.746914

jpeginfo *.jpg | tee jpeginfo.txt
cat jpeginfo.txt | awk  '{  print "mkdir -p ./ratio/" ($2/$4) "/"; }' | sort | uniq | tee tmp.sh
cat jpeginfo.txt | awk  '{  print "ln -fs ../../"$1 " ./ratio/" ($2/$4) "/"; }'  | tee -a tmp.sh

# [[RzR]]@sgi330 xdpyinfo
# dimensions:    1600x1200 pixels (402x302 millimeters)
# resolution:    101x101 dots per inch

Section "Monitor"
  # TV fullscreen mode or DVD fullscreen output.
  # 768x576 @ 79 Hz, 50 kHz hsync
  ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
  # 768x576 @ 100 Hz, 61.6 kHz hsync
  ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection

• http://lists.debian.org/debian-laptop/2003/02/msg00344.html
• http://lists.debian.org/debian-laptop/2003/02/msg00344.html
• http://rzr.online.fr/search.htm

Bonnes résolutions cette année : 1152*864 pour 17” 1280*960 pour 19” et 1600*1200 pour 21/22”

@TaG XWindow AmiloA Desktop Monitor dpi Display Size XgA