原文:Introduction todnorm,pnorm,qnorm, andrnormfor new biostatisticians Today I was in Dan’s office hours and someone asked, “what is the equivalent in R of the back of the stats textbook table of probabilities and their corresponding Z-scores?” (This …
Contents Overview and IntroductionHow Analytic Functions WorkThe SyntaxExamplesCalculate a running TotalTop-N Queries Example 1 Example 2Windows Range Windows Compute average salary for defined range Row Windows Accessing Rows Aroun…
R in Nutshell 前言 例子(nutshell包) 本书中的例子包括在nutshell的R包中,使用数据,需加载nutshell包 install.packages("nutshell") 第一部分:基础 第一章 批处理(Batch Mode) R provides a way to run a large set of commands in sequence and save the results to a file. 以batch mode运行R的一种方式是:使用系统…
Functionals “To become significantly more reliable, code must become more transparent. In particular, nested conditions and loops must be viewed with great suspicion. Complicated control flows confuse programmers. Messy code often hides bugs.” — Bjar…
https://github.com/stretchr/testify Testify - Thou Shalt Write Tests Go code (golang) set of packages that provide many tools for testifying that your code will behave as you intend. Features include: Easy assertions Mocking Testing suite interfac…
Control Structures Control structures in R allow you to control the flow of execution of the program, depending on runtime conditions. Common structures are: if, else: testing a condition for: execute a loop a fixed number of times while: execute a l…
As we demonstrated in “A gentle introduction to parallel computing in R” one of the great things about R is how easy it is to take advantage of parallel processing capabilities to speed up calculation. In this note we will show how to move from runni…
1.Always Use Comments in Scripts2.Make a Scripts exit When Fails Sometimes bash may continue to execute a script even when a certain command fails.thus affecting the rest of the script (may eventually result in logical errors).Use the Command belo…
Something’s Wrong! Indications that something’s not right message: A generic notification/diagnostic message produced by the message function;execution of the function continues warning: An indication that something is wrong but not necessarily fatal…
Writing SCSS @functions is similar to writing functions in other programming languages; they can accept arguments and have return statements. SCSS provides a ton of great features, but sometimes we need to roll our own function. We can do that too! T…
https://www.datamentor.io/r-programming/data-frame/ Check if a variable is a data frame or not We can check if a variable is a data frame or not using the class() function. > x SN Age Name 1 1 21 John 2 2 15 Dora > typeof(x) # data frame is a specia…
在Python调用R,最常见的方式是使用rpy2模块. 简介 模块 The package is made of several sub-packages or modules: rpy2.rinterface —— Low-level interface to R, when speed and flexibility matter most. Close to R’s C-level API. rpy2.robjects —— High-level interface, when ease-…
Machine and Deep Learning with Python Education Tutorials and courses Supervised learning superstitions cheat sheet Introduction to Deep Learning with Python How to implement a neural network How to build and run your first deep learning network Neur…
Kotlin Koans 心印 Introduction 1.Hello, world! Simple Functions Take a look at function syntax and make the function start return the string "OK". In the tasks the function TODO() is used that throws an exception. Your job during the koans will be…
##Linear Regression with One Variable Linear regression predicts a real-valued output based on an input value. We discuss the application of linear regression to housing price prediction, present the notion of a cost function, and introduce the gradi…
来源:这里 Bất Đẳng Thức Luôn Có Một Sức Cuốn Hút Kinh Khủng, Một Số tài Liệu và Sách Bổ ích Cho Việc Học Tập. 1. An Introduction to Inequalities [E. Beckenbach, R. Bellman] Book title: An Introduction to Inequalities.Authors: Edwin Beckenbach, Richard Be…
转载自:https://www.dataquest.io/blog/jupyter-notebook-tips-tricks-shortcuts/ Jupyter notebook, formerly known as the IPython notebook, is a flexible tool that helps you create readable analyses, as you can keep code, images, comments, formulae and plots…
Comparison of the different algorithms for Polygon Boolean operations. Michael Leonov 1998 http://www.angusj.com/delphi/clipper.php#screenshots http://www.complex-a5.ru/polyboolean/comp.html http://www.angusj.com/delphi/clipper.php#screenshots Intro…
本文是转发自:https://www.dataquest.io/blog/jupyter-notebook-tips-tricks-shortcuts/ 的一篇文章,先记录在此,等有空时我会翻译成中文. 如果有读者看到该文,支持看原文. 原文内容如下: 27 Jupyter Notebook tips, tricks and shortcuts 12 OCT 2016 in resources and guides This post originally appeared on Alex Ro…
The glmnetUtils package provides a collection of tools to streamline the process of fitting elastic net models with glmnet. I wrote the package after a couple of projects where I found myself writing the same boilerplate code to convert a data frame…
标记一下,慢慢看 http://www.oracle-base.com/articles/misc/articles-misc.php Miscellaneous Articles DBA Development Middleware Application Express (APEX) MySQL Operating System Installations Oracle VM Others DBA AutoNumber And Identity Functionality - Implem…
