https://www.rforecology.com/authors/selina-cheng/Selina ChengWowchemy (https://wowchemy.com)en-us© HabitU Lab, LLC and R for Ecology 2026Thu, 23 Mar 2023 08:45:39 +0000https://www.rforecology.com/media/logo_hu79e4c31f2037bf5f26b941f1d8a66338_12106_300x300_fit_lanczos_2.pnghttps://www.rforecology.com/authors/selina-cheng/https://www.rforecology.com/post/top-five-ish-sources-of-ecological-data/Thu, 23 Mar 2023 08:45:39 +0000https://www.rforecology.com/post/top-five-ish-sources-of-ecological-data/In this post, I show you how to navigate some common ecological data portals and discuss when you might want to use one or another for accessing data that you can use for practice or your next research project.https://www.rforecology.com/post/reshaping-data-in-r/Thu, 28 Apr 2022 09:30:50 -0400https://www.rforecology.com/post/reshaping-data-in-r/In this blog post, I show you how to reshape data (i.e. how to use pivot tables) so that the data are in the correct form for data analysis in R.https://www.rforecology.com/post/how-to-create-your-own-function-in-r/Thu, 21 Apr 2022 11:46:53 -0400https://www.rforecology.com/post/how-to-create-your-own-function-in-r/In this tutorial, I&rsquo;m going to explain how to create your own functions and provide a few examples.https://www.rforecology.com/post/how-to-use-grepl/Tue, 29 Mar 2022 09:09:55 -0400https://www.rforecology.com/post/how-to-use-grepl/Here I describe the functions called <code>grep()</code>, <code>grepl()</code>, and <code>sub()</code>, which allow you to find strings in your data that match particular patterns.https://www.rforecology.com/post/data-structures-in-r/Wed, 23 Mar 2022 09:09:55 -0400https://www.rforecology.com/post/data-structures-in-r/In this tutorial, we&rsquo;re introduce the structures that R provides to help you organize your data.https://www.rforecology.com/post/data-types-in-r/Wed, 16 Mar 2022 09:45:39 -0400https://www.rforecology.com/post/data-types-in-r/In this tutorial, I introduce you to several different types of data, explain how to use and manipulate each of them, and show you how to check what type of data you have.https://www.rforecology.com/post/how-to-use-apply-functions/Tue, 08 Mar 2022 09:45:39 -0500https://www.rforecology.com/post/how-to-use-apply-functions/Here I show you a useful family of functions that allows you to repetitively perform a specified function (e.g., sum, mean) across a vector, matrix, or data frame.https://www.rforecology.com/post/how-to-use-pipes/Wed, 02 Mar 2022 02:45:39 -0500https://www.rforecology.com/post/how-to-use-pipes/In this tutorial, I&rsquo;m going to give an explanation of what pipes are and when they can be used, and then I&rsquo;m going to demonstrate how useful they can be for writing neat and clear R code.https://www.rforecology.com/post/how-to-use-the-group-by-function/Wed, 23 Feb 2022 08:45:39 -0500https://www.rforecology.com/post/how-to-use-the-group-by-function/In this tutorial, I discuss how to use a handy function called group_by() for organizing and preparing your data for analysis and visualization.https://www.rforecology.com/post/introduction-to-missing-data-in-r/Tue, 01 Feb 2022 09:45:39 -0500https://www.rforecology.com/post/introduction-to-missing-data-in-r/In this tutorial, I&rsquo;m going to explain what exactly an NA value is, how you can find NAs in your data, and how to remove them.https://www.rforecology.com/post/how-to-join-tables-in-r/Wed, 26 Jan 2022 11:45:39 -0500https://www.rforecology.com/post/how-to-join-tables-in-r/In this tutorial, I show you how to combine tables (data frames) together using both base R and the <code>dplyr</code> package.https://www.rforecology.com/post/where-to-ask-for-help-when-coding-in-r/Fri, 03 Dec 2021 09:08:00 -0600https://www.rforecology.com/post/where-to-ask-for-help-when-coding-in-r/In this blog post, I&rsquo;m going to describe a few R forums that are particularly useful when you need specific help with your own project.