## R/ggplot2 save the Chinese font of the picture to PDF - showtext package removes all obstacles

Article summary
1. Solve the problem that the Chinese font of the picture saved by R/ggplot2 is lost to PDF. 2. Solve the problem of failed import of Times New Roman and simsun fonts. 3. Be familiar with and master showtext operation.
1. Problem description
After drawing with ggplot2, use ggsave to save the picture. The Chinese font is l ...

Added by **spasm37** on *Fri, 04 Mar 2022 02:57:07 +0200*

## stm package workflow

preface
Sort out the workflow of STM code in the paper (stm: An R Package for Structural Topic Models). Refer to the original paper for the overall structure, but put forward personal ideas on the execution order of some codes. Due to the limited time, there are unsolved errors and problems (such as selecting the appropriate number of topics, ...

Added by **noirsith** on *Fri, 11 Feb 2022 20:36:04 +0200*

## Shiny tutorial 1 -- Introduction to shiny

Shiny is an R package that makes it easy to build interactive Web applications directly from R. This course will get you started.
If the Shiny package has not been installed, open the R session window, ensure the networking status, and then run
install.packages("shiny")
The Shiny package has 11 built-in examples, each of which demonstrat ...

Added by **phamenoth** on *Wed, 09 Feb 2022 01:50:08 +0200*

## R language book learning 02 "R language data analysis, mining, modeling and visualization" - Chapter 7 prediction application of linear regression model

catalogue
correlation analysis
Regression analysis
Introduction of linear regression model
Solution of regression coefficient
Linear regression in R language
Significance test
Significance test of parameters -- t test
stepwise regression
Verify various assumptions of the model
Multiple linearity test
Normality test
Use PP chart ...

Added by **detalab** on *Tue, 25 Jan 2022 11:09:58 +0200*

## 8. Unified return R class and unified exception handling in SpringBoot 02

01. Why did you learn to return?
In fact, most program development or interface development in enterprises actually return a so-called JSON format. The JSON format is encapsulated by java object-oriented method.
When unifying exception handling, we use @ RestControllerAdvice, which is controller post enhanced processing. Post processing with ...

Added by **mhewall** on *Fri, 21 Jan 2022 23:02:35 +0200*

## Detailed explanation of sparse matrix in R language

Tweet before Detailed explanation of python scipy sparse matrix The principle of common sparse matrix and its application experience in python are introduced in detail. This tweet focuses on R language sparse matrix format and its application in single cell multiomics (scRNA, scATAC).
R sparse matrix
dgTMatrix
That is, Sparse matrices in t ...

Added by **ToddAtWSU** on *Mon, 17 Jan 2022 21:10:58 +0200*

## Topic 10. Univariate Logistic regression analysis - univariate analysis table

In the previous period, I learned how to summarize the results of univariate Cox regression. In this period, I learned the summary of univariate Logistic regression scores. Because the two functions of coxph * * * * and glm are used, the display of results is different, so the sorting process is slightly different, but the extracted information ...

Added by **gergy008** on *Mon, 17 Jan 2022 14:34:28 +0200*

## Introduction to R language

R language
Video link: https://www.bilibili.com/video/BV19x411X7C6
Data analysis process
Data collection - data storage - data analysis - Data Mining - Data Visualization - decision making
1 Rstudio use
1.1 INTRODUCTION
TAB supplement
Blue: FunctionsData frame: boxPink: built in dataset Alt+Shift+K: Show shortcuts
1.2 Foundation
l ...

Added by **newbienewbie** on *Sun, 16 Jan 2022 15:25:37 +0200*

## Extended tecdat|R language, logistic regression, random forest, SVM support vector machine to predict Framingham heart disease risk and model diagnosis visualization

Original link: http://tecdat.cn/?p=24973
Original source: Tuo end data tribal official account
brief introduction
The World Health Organization estimates that 12 million people worldwide die of heart disease every year. In the United States and other developed countries, half of the deaths are due to cardiovascular disease. The early ...

Added by **Mykasoda** on *Mon, 10 Jan 2022 12:05:56 +0200*

## R language - three line table

preface
The reason why I want to send this is that I'm angry when I think about it. Last time, because of the change in the number of cases in the database (the change in the inclusion and exclusion criteria of cases), I made statistical analysis for many times, repeatedly modified my third-line table, and was scolded by my boss for fil ...

Added by **mrwhale** on *Sat, 08 Jan 2022 18:59:21 +0200*