definition
The point at the centre of any shape, sometimes called centre of area or centre of volume. For a triangle, the centroid is the point at which the medians intersect. The co-ordinates of the centroid are the average (arithmetic mean) of the co-ordinates of all the points of the shape. For a shape of uniform density, the centroid coincides with the centre of mass which is also the centre of gravity in a uniform gravitational field.
The theorems are of use, not only for finding the volumes or areas of solids or surfaces of revolution, but also, conversely, for finding centroids or centres of gravity.
The first is by the method of instantaneous centres, already exemplified in 63, and rolling centroids, developed by Reuleaux in connection with his method of analysis.
Again, imagin d fixed, then the instantaneous centre Obd of b with regard n d is found by producing the links c and a to intersect in Obd and the shapes of the centroids belonging respectively to thi links Ii and d can be found as before.
If input parameter centroid is set to ` yes ', then X and Y are centroids of photon distributions in the detect cell.
The residue option uses residue centroids calculated from the currently selected atoms for the calculation.
Thus the user can measure bond lengths, interatomic distances, angles between bonds and planes; create centroids and more.
A table is used to map context identifiers to cluster centroids, each of which is represented by a weight vector of terms.
Based on these centroids, the relationship between two different local spectra is characterized by an affine transformation.