break the long line in python
There are several methods to break the long string line in python. I think the triple-quoted """ method is the easiest way. The reason is you can also for json…
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2016-05-02
hide messages in RMD
If you write Rmd file, the messages are always very disturbing. There are two methods to avoid it: 1. Global method {r setup, include=FALSE} knitr::opts_chunk$set(echo = TRUE, warning = FALSE,…
2016-03-01
change R version
link is from https://support.rstudio.com/hc/en-us/articles/200486138-Using-Different-Versions-of-R default R adress: $which R /usr/bin/R it can be Force R Studio use the specific version: export RSTUDIO_WHICH_R=/usr/local/bin/R
2016-02-16
The easiest way to update nodejs and npm
Linux: sudo npm cache clean -f sudo npm install -g n sudo n stable Windows: Methode 1: 1. Dowload and install the latest version of node.js 2. go the directory:…
2016-01-03
Highlights of the new RStudio releases
The new release of R Studio got many improvement. As I read them, I was very so excited about the new functions. Here are highlights for me. Data can be…
2015-12-04
Configure Git for RStudio
There is an article from RStudio explained how to configure Git for RStudio. But it is not very detailed. I ran into many problem during the configuration and wasted a…
2015-10-23
Animating a point walking flow with python
Using the SimpleGUICS2Pygame can animate the walking path easily. (The SimpleGUICS2Pygame is a implementation of simplegui.) I wrote an small code for the simulation in codeskulptor, you can run it directly and…
2015-10-16