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Zhuo Yao, Ph.D.

Professional Website of Dr. Zhuo Yao
Zhuo Yao, Ph.D.
Professional Website of Dr. Zhuo Yao
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  • linux

    Install WordPress with Apache and Let’s Encrypt SSL on Ubuntu 22.04

    WordPress is one of the most popular content management systems on the internet. It is open-source CMS and works well with almost any web hosting…

    calsalmon November 22, 2022
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  • NotePad++

    Notepad++ add to every line

    https://stackoverflow.com/questions/11003761/notepad-add-to-every-line Follow these steps: To add a word, such as test, at the beginning of each line: To add a word, such as test, at…

    calsalmon January 5, 2022
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  • R

    RStudio Theme

    https://tmtheme-editor.herokuapp.com/#!/editor/theme/Friendship%20Bracelet

    calsalmon November 26, 2019
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  • R

    Exercise 1: Multinomial logit model

    https://cran.r-project.org/web/packages/mlogit/vignettes/e1mlogit.html Kenneth Train and Yves Croissant 2019-07-22 There are 900 observations with the following variables: Note that the attributes of the alternatives, namely, installation cost…

    calsalmon November 8, 2019
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  • R

    Random utility model and the multinomial logit model

    Random utility model The utility for alternative l is written as: Ul=Vl+ϵl where Vl is a function of some observable covariates and unknown parameters to…

    calsalmon November 8, 2019
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  • linux

    Install WordPress with Apache and Let’s Encrypt SSL on Ubuntu 22.04

    calsalmon November 22, 2022
  • NotePad++

    Notepad++ add to every line

    calsalmon January 5, 2022
  • R

    RStudio Theme

    calsalmon November 26, 2019
  • R

    Exercise 1: Multinomial logit model

    calsalmon November 8, 2019
  • R

    Random utility model and the multinomial logit model

    calsalmon November 8, 2019
  • R

    nhts_explorer/nhts_tnc_to_transit.ipynb

    calsalmon November 8, 2019

linux

CouchDB Installation

calsalmon February 25, 2015

Stable releases of http://couchdb.apache.org/ maintained and provided by the CouchDB project and community, based on the officially released tarballs. Installation should be straightforward, usual caveats…

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linux

How To Install and Use PostgreSQL on Ubuntu 12.04

calsalmon February 25, 2015

Install Postgres Before we install postgres, we should quick perform a quick update of the apt-get repository: apt-get update Once apt-get has updated go ahead…

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linux

PostgreSQL installation in Ubuntu 12.04

calsalmon February 25, 2015

PostgreSQL is a powerful and reliable object-relational database system. It’s a great alternative for MySQL. It is as easy to set up, performs better and offers…

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R

readWorksheet-methods {XLConnect}

calsalmon February 22, 2015

Reading data from worksheets Package: XLConnect Version: 0.2-7 Description Reads data from worksheets of a workbook. Usage ## S4 method for class ‘workbook,numeric’: readWorksheet((object,sheet,startRow,startCol,endRow,endCol,autofitRow,autofitCol, region,header,rownames,colTypes,forceConversion,dateTimeFormat,check.names,…

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Uncategorized

Importing multiple Excel files, each with multiple sheets, into R.

calsalmon February 22, 2015

Importing multiple Excel files, each with multiple sheets, into R. Excel is extremely popular as a tool for organizing data and it has fairly easy-to-use…

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R

readWorksheetFromFile Reading data from worksheets in an Excel file (wrapper function)

calsalmon February 22, 2015

Examples # multiregion xlsx file from demoFiles subfolder of # package XLConnect demoExcelFile <- system.file(“demoFiles/multiregion.xlsx”, package = “XLConnect”) # Read single area from first sheet…

View More readWorksheetFromFile Reading data from worksheets in an Excel file (wrapper function)
R

Read Excel files from R

calsalmon February 22, 2015

Many people still save their data into Microsoft Excel files. This is an unhappy choice for many reasons but many was already written about this…

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R

R Programming/Text Processing

calsalmon February 22, 2015

This page includes all the material you need to deal with strings in R. The section on regular expressions may be useful to understand the…

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linux

Rsync (Remote Sync): 10 Practical Examples of Rsync Command in Linux

calsalmon February 20, 2015

Rsync (Remote Sync) is a most commonly used command for copying and synchronizing files and directories remotely as well as locally in Linux/Unix systems. With…

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R

10 R packages which will master you in R Tool

calsalmon February 17, 2015

R can be more prickly and obscure than other languages like Python or Java. The good news is that there are tons of packages which…

View More 10 R packages which will master you in R Tool

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  • Install WordPress with Apache and Let’s Encrypt SSL on Ubuntu 22.04
  • Notepad++ add to every line
  • RStudio Theme
  • Exercise 1: Multinomial logit model
  • Random utility model and the multinomial logit model
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