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@ -15,21 +15,29 @@ These things may feel weird at first, but, R's type system is one of the things |
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Did I mention that arrays start at 1? |
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Did I mention that arrays start at 1? |
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Technically, the thing which we refer to as an array in C or Java is really a vector in R. |
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Technically, the thing which we refer to as an array in Java are really vectors in R. |
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Arrays in R are data objects which can store data in more than two dimensions. |
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Arrays in R are data objects which can store data in more than two dimensions. |
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Since R tries to follow mathematical notation, indexing starts at 1 -- just like in linear algebra. |
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Since R tries to follow mathematical notation, indexing starts at 1 -- just like in linear algebra. |
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Using zero based indexing makes sense for languages like C because the index is used to get at a particular memory location from a pointer. |
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Using zero based indexing makes sense for languages like C because the index is used to get at a particular memory location from a pointer. |
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<youtube src="s3FozVfd7q4" /> |
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<youtube src="s3FozVfd7q4" /> |
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I don't have the time to go over the basic syntax of R in a single blog post, however, I feel that this youtube video does a pretty good job. |
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I don't have the time to go over the basic syntax of R in a single blog post; however, I feel that this youtube video does a pretty good job. |
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# R Markdown |
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# R Markdown |
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One of my favorite aspects of R is its markdown language called Rmd. |
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Rmd is essentially markdown which has can have embedded R scripts run in it. |
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The Rmd file is compiled down to a markdown file which is converted to either a PDF, HTML file, or a slide show using pandoc. |
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You can provide options for the pandoc render using a YAMAL header in the Rmd file. |
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This is an amazing tool for creating reports and writing research papers. |
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The documents which you create are reproducible since you can share the source code to it. |
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If the data which you are using changes, you simply have to recompile to document to get an updated view. |
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You no longer have to re-generate a dozen graphs and update figures and statistics across your document. |
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# Resources |
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# Resources |
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- [R for Data Science(Online Book)](https://r4ds.had.co.nz/) |
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- [R for Data Science (Online Book)](https://r4ds.had.co.nz/) |
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- [R Studio](https://www.rstudio.com/) |
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- [R Studio](https://www.rstudio.com/) |
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- [R Official Website](https://www.r-project.org/) |
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- [R Official Website](https://www.r-project.org/) |
jrtechs
5 years ago