Example to write and read files with arrays from disk

The package can write arrays and designs to a custom file format. There is a text based format (specified by oapackage.ATEXT) and a binary format (specified by oapackage.ABINARY). See the online documentation for details on the file formats.

import oapackage
import tempfile

Create a list of two example arrays.

lst = [oapackage.exampleArray(32), oapackage.exampleArray(33)]
print(lst)

[array_link: 18, 4, array_link: 18, 4]

Write the two arrays to a file on disk.

filename = tempfile.mktemp(".oa")
_ = oapackage.writearrayfile(filename, lst, oapackage.ATEXT)

Display information about the file written.

oapackage.oainfo(filename)

file C:\Users\EENDEB~1\AppData\Local\Temp\tmpxc4dnsl6.oa: 18 rows, 4 columns, 2 arrays, mode text, nbits 0

The arrays can be read from disk again using the command readarrayfile.

lst2 = oapackage.readarrayfile(filename)
print(lst2)

(array_link: 18, 4, array_link: 18, 4)

The first array in the list that was read from disk is:

lst2[0].showarray()

array:
  0   0   0   0
  0   0   0   0
  1   1   1   1
  1   1   1   1
  1   1  -1  -1
  1   1  -1  -1
  1  -1   1  -1
  1  -1   1  -1
  1  -1  -1   1
  1  -1  -1   1
 -1   1   1  -1
 -1   1   1  -1
 -1   1  -1   1
 -1   1  -1   1
 -1  -1   1   1
 -1  -1   1   1
 -1  -1  -1  -1
 -1  -1  -1  -1