https://isangfeng.github.io/tags/r/Recent content in R on 桑峰Hugo -- gohugo.iozh-cn© 2026 桑峰Mon, 08 Apr 2024 00:00:00 +0000https://isangfeng.github.io/posts/2024/2024-04-08_trycatchinr/Mon, 08 Apr 2024 00:00:00 +0000https://isangfeng.github.io/posts/2024/2024-04-08_trycatchinr/TryCatch in Rhttps://isangfeng.github.io/posts/2023/09/20230920_weeklynotes/Wed, 20 Sep 2023 00:00:00 +0000https://isangfeng.github.io/posts/2023/09/20230920_weeklynotes/<h2 class="relative group">Add a new row into a empty tibble in R <div id="add-a-new-row-into-a-empty-tibble-in-r" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#add-a-new-row-into-a-empty-tibble-in-r" aria-label="锚点">#</a> </span> </h2> <p>There is a simple example below.</p>https://isangfeng.github.io/posts/2022/2022-09-09-installrpackageerror/Fri, 09 Sep 2022 00:00:00 +0000https://isangfeng.github.io/posts/2022/2022-09-09-installrpackageerror/<h2 class="relative group">Error: C++14 standard requested but CXX14 is not defined <div id="error-c14-standard-requested-but-cxx14-is-not-defined" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#error-c14-standard-requested-but-cxx14-is-not-defined" aria-label="锚点">#</a> </span> </h2> <p>参考：https://www.zxzyl.com/archives/1283/</p>https://isangfeng.github.io/posts/2021/2021-11-19-weeklysummary/Fri, 19 Nov 2021 00:00:00 +0000https://isangfeng.github.io/posts/2021/2021-11-19-weeklysummary/<h3 class="relative group">自定义Colormap <div id="自定义colormap" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e8%87%aa%e5%ae%9a%e4%b9%89colormap" aria-label="锚点">#</a> </span> </h3> <p>在一些场景下，我们需要自己构造数字与颜色的对应关系。比如，我们在探究每个ROI随龄变化的趋势时，我们需要将回归方程中年龄的系数展示在脑图上。朴素的想法是，我构造一个关于系数与颜色的映射关系，给定某一系数，就返回相应的颜色。实现方法如下：</p>https://isangfeng.github.io/posts/2021/2021-09-03-weeklysummary/Fri, 03 Sep 2021 00:00:00 +0000https://isangfeng.github.io/posts/2021/2021-09-03-weeklysummary/<h2 class="relative group">Python并行处理 <div id="python并行处理" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#python%e5%b9%b6%e8%a1%8c%e5%a4%84%e7%90%86" aria-label="锚点">#</a> </span> </h2> <p>Python 中的concurrent包提供了对于并行运行的接口，包括进程级并行和线程级并行。下面是一个例子。</p>https://isangfeng.github.io/posts/2021/2021-05-08-alluvialdiagram/Sat, 08 May 2021 00:00:00 +0000https://isangfeng.github.io/posts/2021/2021-05-08-alluvialdiagram/<p>冲击图可以非常直观地描述一组观测值的多个离散变量的情况。</p> <p>R语言中生成冲击图需要依赖包<strong>ggalluvial</strong>. 使用以下代码安装依赖包。</p>https://isangfeng.github.io/posts/2021/2021-05-04-r-basic-statistic/Tue, 04 May 2021 00:00:00 +0000https://isangfeng.github.io/posts/2021/2021-05-04-r-basic-statistic/<p>本文为笔者在学习b站up主@<a href="https://space.bilibili.com/43536169?spm_id_from=333.788.b_765f7570696e666f.1" target="_blank" rel="noreferrer">学术数据分析及可视化</a>相关视频的笔记。文中只是笔者个人的理解，描述也只是便于自己理解。在使用相关内容时，还需要进一步查看相关的手册或帮助文档。</p> <h2 class="relative group">相关 <div id="相关" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e7%9b%b8%e5%85%b3" aria-label="锚点">#</a> </span> </h2> <p>cor()用于计算两个向量的相关系数。ggm::pcor()用于计算偏相关系数。这两个函数只能计算相关系数。cor.test(), psych::cor.test和psych::pcor.test()分别计算相关系数和偏相关系数及其显著性检验的结果。</p>https://isangfeng.github.io/posts/2021/2021-04-19-barplot/Mon, 19 Apr 2021 00:00:00 +0000https://isangfeng.github.io/posts/2021/2021-04-19-barplot/<p>本文用于记录ggplot2作图相关的代码，会不定期更新。</p> <p>示例数据格式为</p>https://isangfeng.github.io/posts/2021/2021-04-04-blogdown/Sun, 04 Apr 2021 00:00:00 +0000https://isangfeng.github.io/posts/2021/2021-04-04-blogdown/<h2 class="relative group">准备工作 <div id="准备工作" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%87%86%e5%a4%87%e5%b7%a5%e4%bd%9c" aria-label="锚点">#</a> </span> </h2> <p>安装RStudio和R包blogdown。</p>