Jmol/Quaternions
From Proteopedia
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==Preliminaries== | ==Preliminaries== | ||
| - | A quaternion is an mathematical object (like a matrix or a complex number) with four parameters x y z w. It is useful to express orientations and rotations, and to do calculations (combining, interpolating, dissecting) on them. Jmol shows structures (e.g. atom positions) on a display and allows the view to be rotated and individual atomic positions to be manipulated. | + | A quaternion is an mathematical object (like a matrix or a complex number) with four parameters x y z w. It is useful to express orientations and rotations, and to do calculations (combining, interpolating, dissecting) on them. |
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| + | Jmol shows structures (e.g. atom positions) on a display and allows the view to be rotated and individual atomic positions to be manipulated. The atoms have Cartesian coordinates x, y, z, and when you rotate the model, the coordinate system is rotated (same coordinates x, y, z, but axes of coordinate system point in different directions). | ||
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| + | <jmol><jmolButton><script>axes on</script> | ||
| + | <text>show axes</text></jmolButton></jmol> | ||
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==Combining two rotations== | ==Combining two rotations== | ||
Revision as of 19:11, 24 July 2019
Examples
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