Editing 184: Matrix Transform
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{{comic | {{comic | ||
| number = 184 | | number = 184 | ||
− | | date = | + | | date = |
− | | title = Matrix | + | | title = Matrix Transformation |
| image = matrix_transform.png | | image = matrix_transform.png | ||
− | | titletext = In fact, draw all your rotational matrices sideways. Your professors will love it! And then they'll go home and shrink. | + | | titletext = In fact, draw all your rotational matrices sideways. Your professors will love it! And then they'll go home and shrink. |
}} | }} | ||
==Explanation== | ==Explanation== | ||
− | A | + | A rotational matrix transformation (i.e. the big brackets with a few "cos" and "sin" in them) is used in computer graphics to rotate an image. The product of the transform matrix and the argument vector (a1, a2) is a rotated version of the argument vector. Here, the joke is that the author turned the image of the vector rather than writing the correct answer. |
− | + | Rotational matrix transformations are a special case of the general linear matrix transform, which can do other things to images, including shrinking them. However, turning the rotational matrix sideways does not make it a shrinking matrix. | |
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− | Rotational matrix transformations are a special case of the general linear matrix transform, which can do other things to images, including | ||
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==Transcript== | ==Transcript== | ||
− | + | <!-- The transcript can be found in a hidden <div> element on the xkcd comic's html source, with id "transcript". | |
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{{comic discussion}} | {{comic discussion}} | ||
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