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Don't try to save disk space on the images server by giving up useful information. Keep the source: If the image was generated from data (e.g. a graph in Microsoft Excel), the data and file (e.g. spreadsheet) should be included so new data can be added to the graph, and/or the source of the data should be cited.
For example, the background colors of cells can be changed with cell parameters, making the table into a diagram, like meta:Template talk:Square 8x8 pentomino example. An "image" in the form of a table is much more convenient to edit than an uploaded image. If all the cells in a row are empty the cells still show up.
The caption may have incomplete link tags, especially unpaired [[s and ]]s that become interpreted as image syntax; The previous image may have incorrect image syntax, especially an incomplete ]] at the end; The capitalization in the wikicode must be followed; thus if an image file is Image:Photo of Wikipede.JPG, you will need to use the ...
(Most references to an image's "size" really mean its width.) Except with very good reason, a fixed width in pixels (e.g. 17px) should not be specified, because it ignores the user's base width setting. Thus upright=scaling factor is preferred when it is desired to present an image at other than the default width.
The resulting image is larger than the original, and preserves all the original detail, but has (possibly undesirable) jaggedness. The diagonal lines of the "W", for example, now show the "stairway" shape characteristic of nearest-neighbor interpolation. Other scaling methods below are better at preserving smooth contours in the image.
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This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Computer graphics images defined by points, lines and curves This article is about computer illustration. For other uses, see Vector graphics (disambiguation). Example showing comparison of vector graphics and raster graphics upon magnification Vector graphics are a form of computer ...
An image scaled with nearest-neighbor scaling (left) and 2×SaI scaling (right) In computer graphics and digital imaging, image scaling refers to the resizing of a digital image. In video technology, the magnification of digital material is known as upscaling or resolution enhancement.