![]() ![]() PS - PostScript is a programming and page description language underlying EPS and PDF avoid it.EPS - Encapsulated PostScript the precursor to PDF, it's rarely called for today, unless PDF is giving you problems.PDF - Portable Document Format, the closest thing to an open, ubiquitous format stable and predictable.So when you publish or share your work it's often a good idea to export to either a high-res PNG, or a composite page description format: But vector files are subject to interpretation by different software, may be proprietary, and have complex features like guides and layers that you may not want to expose to someone else. They can therefore be used for very large displays like posters. Vector and raster graphics can be combined in all sorts of ways, and vector files can contain raster images. One of the most important properties of vector graphics is that you can rescale it without worrying about changing the resolution - as in the example (right). SHP - shapefiles are a (mostly) generic vector format for GIS.PPT - pictures in Microsoft PowerPoint are vector format.AI - a proprietary format used by Adobe Illustrator.SVG - Scalable Vector Graphics, an open format and web standard.Vector graphics do not contain descriptions of pixels, but instead they contain descriptions and positions of text, paths, and polygons. Such files usually contain vector graphics. What are vector graphics?Ĭlick to enlarge - see a simulation of the difference between vector and raster art.What I was not writing about was drawings and graphics combining text, lines, and images. That is, a discretized (pixel-based) grid of data. ![]() I realized I hadn't been very clear: when I say 'image', I really mean 'raster' or 'bitmap'. Some chat ensued in the comments and on Twitter about making drawings and figures and such. In yesterday's post, I looked at advantages and disadvantages of various image formats. ![]()
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