# OR-Library

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.

## Packing unequal rectangles and squares

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