Memory mindful patch to PON generation

[jrafailov]

Description:

• Patch for memory ballooning during PON generation
• Original code had an inefficient and unnecessary matrix transposition that impeded generation of large PONs (n > 600)

Changes:

• Refactoring of ~10 lines of code

[codecov[bot]]

Codecov Report

Merging #24 (283952d) into master (ff1e15f) will decrease coverage by 0.12%. The diff coverage is 100.00%.

Additional details and impacted files

[](https://app.codecov.io/gh/mskilab-org/dryclean/pull/24?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org) ```diff @@ Coverage Diff @@ ## master #24 +/- ## ========================================== - Coverage 78.91% 78.80% -0.12% ========================================== Files 3 3 Lines 555 552 -3 ========================================== - Hits 438 435 -3 Misses 117 117 ``` | [Files](https://app.codecov.io/gh/mskilab-org/dryclean/pull/24?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org) | Coverage Δ | | |---|---|---| | [R/dryclean.R](https://app.codecov.io/gh/mskilab-org/dryclean/pull/24?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org#diff-Ui9kcnljbGVhbi5S) | `77.57% <100.00%> (-0.18%)` | :arrow_down: | ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/mskilab-org/dryclean/pull/24?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/mskilab-org/dryclean/pull/24?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org). Last update [ff1e15f...283952d](https://app.codecov.io/gh/mskilab-org/dryclean/pull/24?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mskilab-org).