Graphic File Formats Demystified Which File Format to Choose?

Graphic File Formats Demystified Which file format to choose? INDD JPG EPS PSD TIF CAMERA RAW GIF AI PDF PNG Who cares? You should Ask Yourself What are you going to do with the file? Is your graphic raster? Is your graphic vector? What is the difference? Raster Graphics Created with pixels Resolution dependent Scaling compromises the resolution Scaling can compromise quality 100% Scaled 300% Vector Graphics Created with paths Points, lines, shapes Mathematic equations and geometry to create art Resolution independent Scalable without loss of quality Postage stamp to billboard and beyond 100% Scaled 600% Raster Vector FILE COMPRESSION LOSSLESS (lose less) This form of data compression is an algorithm that looks for redundancy in data. For instance, a blue sky may have several pixels that are the same color of blue. Rather than write each pixel it groups them together in a “run-length encoding” to say that there are 157 blue pixels. When expanded the data remembers what and where it was and no information is lost or changed. Examples: PNG, TIF, PDF LOSSY (lousy) This form of compression gathers data that is similar within a defined tolerance and rewrites that information as the same. Original data is discarded (lost). When expanded the new data is displayed. Example: JPG Raster File Formats JPG Joint Photographic Experts Group The most common file Does not retain layers or transparency Quality of the image decreases every time the file is saved Lossy compression Best For: web, raster Not For: print Original JPG JPG saved multiple times PNG Portable Network Graphics Supports transparency options Sharper image Lossless compression Best For: web, raster Not For: print (but can be) JPG PNG GIF Graphics Interchange Format Animated images Smaller file size Loads quickly for web Best For: web, raster Not For: print, vector TIF Tagged Image File Format Options for type of compression Larger file size Lossless compression Best For: print, raster Not For: web PSD Photoshop Document Files created in Adobe Photoshop Retains layers Lossless compression Best For: print, raster Not For: web JPG 881 KB PNG 5 MB PSD 17.4 MB TIF 52.2 MB RAW/DNG Digital Negative Unprocessed by the Camera Uncompressed data Edits are only filed in metadata Original data is preserved when camera raw images are adjusted RAW Captures more values, tones, shades, colors Editing in “Camera Raw” keeps the data intact Lossless compression Best For: print, raster Not For: web Vector File Formats EPS Encapsulated Postscript Originally an image needed to be an EPS to be place into a page layout program Postscript file with a preview An older file format Best For: print, vector, raster Not For: web AI Adobe Illustrator Document Creates vector files Scalable without loss of quality Best For: vector, print Not For: web, raster PDF Portable Document Format Invented by Adobe Most print work flows are PDFs Can contain links, buttons, form fields, audio, and video Best For: print, web, vector, raster Not For: making changes IDML Allows an InDesign document created in a newer version to be opened in an older version Can save an IDML file Can be included in your packaged ID folder APPLE’S NEW FILE FORMATS FOR IOS 11 HEIC pronounced heek Video HEIF pronounced heef Photo High Efficiency Image File Format Format for individual images and image sequences Developed by MPEG, the Moving Picture Experts Group WHAT CAN HAPPEN IF YOU’VE USED THE WRONG FILE FORMAT Rejected by a printer Incompatible with a computer Slower download times Complete disaster.

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Raster Images in R Graphics by Paul Murrell
48 CONTRIBUTED RESEARCH ARTICLES Raster Images in R Graphics by Paul Murrell Abstract The R graphics engine has new sup- 39837_s_at 1267_at 402_s_at 32562_at 37600_at 1007_s_at 36643_at 1039_s_at 40215_at 39781_at port for rendering raster images via the func- 266_s_at 307_at 38408_at 37539_at 1911_s_at 1463_at 2057_g_at 39556_at 41744_at 34789_at 34850_at rasterImage() grid.raster() 38631_at tions and . This 37280_at 36536_at 37006_at 41397_at 41346_at 40692_at 35714_at 1992_at 33244_at 40167_s_at 32872_at 34699_at 33440_at leads to better scaling of raster images, faster 36275_at 33809_at 40953_at 1308_g_at 1928_s_at 1307_at 40504_at 41742_s_at 41743_i_at 1674_at 40784_at 40785_g_at rendering to screen, and smaller graphics ﬁles. 37978_at 37099_at 1973_s_at 38413_at 2036_s_at 1126_s_at 31472_s_at 37184_at 35256_at 40493_at 41779_at 33412_at Several examples of possible applications of 37193_at 37479_at 39210_at 919_at 1140_at 41478_at 35831_at 176_at 37724_at 38385_at 41401_at 41071_at these new features are described. 39135_at 34961_at 37251_s_at 41470_at 1947_g_at 37810_at 36777_at 38004_at 177_at 36897_at 34106_at 31615_i_at 35665_at 33358_at 39315_at 41191_at 931_at 1914_at 36873_at 37809_at 39635_at 38223_at 33936_at 37558_at 41348_at 31605_at 205_g_at 32475_at 34247_at 36149_at 1500_at 34098_f_at 33528_at 35663_at 40393_at 33193_at 39716_at 33405_at 1929_at 36092_at 32215_i_at 41448_at 40763_at 873_at Prior to version 2.11.0, the core R graphics engine 37225_at 38056_at 37413_at 39424_at 32116_at 2039_s_at 40480_s_at 35816_at 1134_at
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