OR-Library is a collection of test data sets for a variety of OR problems.
A full list of the test data sets available in OR-Library can be found here.
There are currently 6 data files.
These data files are the test problems used in: Packing unequal rectangles and squares in a fixed size circular container using formulation space search by C.O. Lopez and J.E. Beasley. Computers & Operations Research, vol.94, 2018, pp106-117 https://doi.org/10.1016/j.cor.2018.02.012
The test problems are the files: square1, square2, square3, rect1, rect2, rect3 The format of the square data files is: number of squares (n), 3 values for the container radius for square i (i=1,2,...,n) in turn: length of square side The format of the rect data files is: number of rectangles (n), 3 values for the container radius for rectangle i (i=1,2,...,n) in turn: rectangle length, rectangle width
Click here to access these files