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Tuesday, June 17, 2025

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

R

Using RStudio as an interactive GIS with Leaflet

calsalmon April 1, 2015

Kyle Walker, Texas Christian University February 17, 2015 Web: http://personal.tcu.edu/kylewalker Twitter: https://twitter.com/kyle_e_walker For exploratory GIS work, I have hesitated to use R instead of ArcGIS…

View More Using RStudio as an interactive GIS with Leaflet
R

Maps with R

calsalmon April 1, 2015

This is the first post of a short series to show some code I have learnt to produce maps with R. NOTE: Although the procedure…

View More Maps with R
R

Plume Model

calsalmon April 1, 2015

For this workshop session we will consider a release of pollution from a point source. The scenario is that a pollution release from a research…

View More Plume Model
R

Crime Data Mapping

calsalmon April 1, 2015

For this workshop session we’ll read in some data and do some basic mapping. We need a number of packages for this. library(“sp”) library(“raster”) library(“rgdal”)…

View More Crime Data Mapping
R

Spatial Cheatsheet

calsalmon April 1, 2015

This cheatsheet is an attempt to supply you with the key functions and manipulations of spatial vector and raster data. It does not have examples…

View More Spatial Cheatsheet
Spatial Panel Modeling

CRAN Task View: Analysis of Spatial Data

calsalmon April 1, 2015

Maintainer: Roger Bivand Contact: Roger.Bivand at nhh.no Version: 2015-03-10 http://cran.r-project.org/web/views/Spatial.html Base R includes many functions that can be used for reading, visualising, and analysing spatial…

View More CRAN Task View: Analysis of Spatial Data
R

how to send email with attachment from R in windows

calsalmon March 26, 2015

sendmailR works for me on Windows 7. I referenced http://cran.es.r-project.org/web/packages/sendmailR/sendmailR.pdf smtpServer= info for Outlook 2010 is in File -> Account Settings -> Account Settings ->…

View More how to send email with attachment from R in windows
R

Manipulating Data Frames Using sqldf – A Brief Overview

calsalmon March 20, 2015

By Josh Mills Introduction For those who are learning R and who may be well-versed in SQL, the sqldf package provides a mechanism to manipulate…

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R

An example of nested downloads using RCurl

calsalmon March 16, 2015

Overview This example uses RCurl to download an HTML document and then collect the name of each link within that document. The purpose of the…

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R

Nested HTML Downloads

calsalmon March 16, 2015

Overview The goal of this example is to show how we can parse and HTML document and download the files to which it has links,…

View More Nested HTML Downloads

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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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