Addressing issues in mega issue section: R basics continued - factors and data frames

[ytakemon]

Addresses issue #285

• Added text to explain what integers are and how they differ from numerics

Addresses issue #284

• Breaks down code into a step-wise process to help review indexing from the previous section.

Addresses issue #283

• Shows str(snps) is a character vector and that R does not intuitively know how to plot them and compares them to str(factor_snps).

[github-actions]

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The following changes were observed in the rendered markdown documents:

 03-basics-factors-dataframes.md                    | 172 +++++++++++++++++++--
 ...ataframes-rendered-unnamed-chunk-13-1.png (new) | Bin 0 -> 362 bytes
 ...tors-dataframes-rendered-unnamed-chunk-18-1.png | Bin 3688 -> 3685 bytes
 ...ataframes-rendered-unnamed-chunk-20-1.png (new) | Bin 0 -> 3688 bytes
 md5sum.txt                                         |   2 +-
 5 files changed, 156 insertions(+), 18 deletions(-)

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⏱️ Updated at 2024-10-02 16:38:56 +0000

[ytakemon]

Addresses issue #291

• added more explanation for how to subset a 2D data frame

Addresses issue #292

• making sure the text matches what the code is doing.

[ytakemon]

This should address the rest of the issues in this section. Ready to merge when you are @JasonJWilliamsNY and @naupaka !

[naupaka]

Nicely done @ytakemon -- LGTM