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Wenxuan Zhang
Wenxuan Zhang

50 Followers

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Dec 25, 2022

On Unemployment — What happened since pandemic and what will be the job market outlook in 2023?

There no short of job cutting news at the end of 2022. According to layoffs.fyi, 1003 companies cut 152,421 jobs. Walls street did not escape the trend. Goldman Sachs planed to lay off 4,000 employees, around 8% of its total headcount. …

2023

4 min read

On Unemployment — What happened since pandemic and what will be the job market outlook in 2023?
On Unemployment — What happened since pandemic and what will be the job market outlook in 2023?
2023

4 min read


Nov 25, 2022

Let’s talk about weather — using rnoaa to access the NOAA weather data

How is the weather? When I was asked about the question, I usually resort to google Weather + City. I feel winter this year is way warmer vs. LY, but how can I find this year and last year’s winter temperature? …

Weather

5 min read

Let’s talk about weather — using rnoaa to access the NOAA weather data
Let’s talk about weather — using rnoaa to access the NOAA weather data
Weather

5 min read


Oct 14, 2022

The Very Basics of a Statistical Test

There are multiple types of statistical tests, but they all share same basic elements, which are random variables, distribution, null/alternative hypothesis and critical value, and concepts that are generated from these elements, e.g., …

Statistics

5 min read

The Very Basics of a Statistical Test
The Very Basics of a Statistical Test
Statistics

5 min read


Oct 6, 2022

Speed Up Your Tableau Dashboard

You created a tableau dashboard and shared it with the leadership team, sales team, finance team and they came back to told you how they loved your dashboard that shared insights that was not captured before. …

Tableau

5 min read

Speed Up Your Tableau Dashboard
Speed Up Your Tableau Dashboard
Tableau

5 min read


Sep 16, 2022

No more power point by hand — automate PPT creation by R Officer

As a data scientist, you draw insights from data and present it in a informative and visually appealing way. There are good tools (Tableau, Looker, Power BI) to help you tell the story, while what if your boss prefers PowerPoint? It is not hard to make PowerPoint, but it takes…

R

6 min read

No more power point by hand — automate PPT creation by R Officer
No more power point by hand — automate PPT creation by R Officer
R

6 min read


Sep 9, 2022

Tableau Filters — Operation orders and examples

There are 6 types of tableau filters. Understanding operational order of filters can of vital importance. This article is going to briefly explain the 6 types of filters and share 3 examples to differentiate the subtle details of different filters. Extract Filters and Data Source Filters applied on extract or…

Tableau

4 min read

Tableau Filters — Operation orders and examples
Tableau Filters — Operation orders and examples
Tableau

4 min read


May 6, 2022

An overview of methods to create R Shiny Desktop Apps

In this article, I am going to discuss two ways of deploying the R Shiny App as a desktop app There are two ways of deploying the R Shiny Apps: Web Application Desktop Application Though the first method is convenient, and easy to share, it requires multiple approvals from IT/Finance…

R Shiny

7 min read

An overview of methods to create R Shiny Desktop Apps
An overview of methods to create R Shiny Desktop Apps
R Shiny

7 min read


Mar 31, 2022

Compiling R Package from Source Code

Have you ever run into the following warnings? If yes, you need to compile the R source code to binary (two type of R packages, binary/source). Then you need to have RTools installed. Select your Rtools based on your R version.

R

2 min read

Compiling R Package from Source Code
Compiling R Package from Source Code
R

2 min read


Feb 13, 2022

R Shiny reactivity

Reactivity is one of the most important and confusing concepts of R Shiny Programming. This article is going to explain the definition and different between: Reactive : define reactive expression that is impacted by input Observe : similar with print function, which allow the user to observe what is happening…

R Shiny

3 min read

R Shiny

3 min read


Jan 28, 2022

Frequently seen Bugs and their ‘Species’

As a programmer, data scientist, or anyone who write code sometimes, you should not be unfamiliar with ‘Bugs’. Often, people tried to avoid them as much as possible, however, it is impossible. The best approach would be, to understand what are the typical bugs and tried to avoid them in…

Coding

2 min read

Frequently seen Bugs and their ‘Species’
Frequently seen Bugs and their ‘Species’
Coding

2 min read

Wenxuan Zhang

Wenxuan Zhang

50 Followers

A Data Scientist.

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