HAND_DATA
Numerical Exercises Using the Shape of a Hand

HAND_DATA, MATLAB programs which carry out some numerical exercises based on data that came from tracing several points on a person's hand.

The original proposer of this exercise was Cleve Moler, in the textbook Numerical Computing with MATLAB.

Licensing:

The computer code and data files made available on this web page are distributed under the GNU LGPL license.

Languages:

HAND_DATA is available in a MATLAB version.

Related Data and Programs:

CONVEX_HULL, a MATLAB program which demonstrates the computation of the convex hull of a set of 2D points.

HAND_AREA, a MATLAB program which estimates the area of a curve which outlines a person's hand.

hand_data_test

MAPLE_AREA, a MATLAB library which takes the list of pixels that form the boundary of the image of a maple leaf within a picture, and uses grid, Monte Carlo, and Quasi Monte Carlo sampling to estimate the area of the leaf.

MAPLE_BOUNDARY, a MATLAB library which reads an image of a maple leaf and extracts the list of pixels that form the boundary.

MESH2D_HAND, a MATLAB program which reads in a set of 59 points which outline a human hand, and calls MESH2D, which is able to create a fine triangular mesh of the region outlined by the points.

POLYGON, a dataset directory which contains examples of polygons.

TRIANGULATE, a MATLAB program which triangulates a polygonal region.

Reference:

• Cleve Moler,
  Numerical Computing with MATLAB,
  SIAM, 2004,
  ISBN13: 978-0-898716-60-3,
  LC: QA297.M625.

Source Code:

• hand_acquire.m guides a user through the steps of recording hand data from the screen.
• hand_dilation.m dilates the hand data.
• hand_hull.m computes the convex hull of the hand data.
• hand_linear.m applies a linear transformation to the hand data.
• hand_negation.m negates the hand data.
• hand_plot.m plots the hand data.
• hand_reflection.m reflects the hand data.
• hand_rotation.m rotates the hand data.
• hand_spline.m interpolates the hand data with a cubic spline.
• hand_star.m shows that the hand data is "star shaped".
• hand_translation.m translates the hand data.
• timestamp.m prints the YMDHMS date as a timestamp.