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Jan07Research and Teaching

Attention to participants: Intro to R and Reference Management

(image from: writingclassesforkids.com) For Intro to R and Reference Management course participant. Be sure to download and install all the required softwares prior to enter the…

Dec06R Programming

matrix aggregation: Upcoming post on R from dummies

Dear friends, After a long hiatus, here’s my new post (in Bahasa Indonesia) about matrix aggregation. This article is a collaboration between me and Ali…

Aug01Research and Teaching

Several more things about data analysis

Outline Part 1: Data in business 1.1 Introduction 1.2 Data in business: why is it so important 1.2.1 Forecasting: we need to know the future…

Jun28R Programming

How to make variogram with geoR package

[image from: leg.ufpr.br] This pdf was first posted at http://erwinirawansblog.blogspot.com. The following pdf contains code on how to make a simple variogram. However I haven’t…

Jun25Research and Teaching

Blogpost arrangement

                [image from: personal collection, a path way in UWS MacArthur Campus] Dear friends, It’s another 10 degrees…

Jun17R Programming

[#R] How to convert coordinate system using R

(image from: commons.wikimedia.org) This post is originally posted at my blogspot site. This is a simple code for R beginner. Just open the file and I would…

Jun10R Programming, Writing

Using Pairs Function: an R tutorial

(image from: twistynoodle.com) This post was originally posted in my blogspot site. It is about using basic “pairs” function in R and how to build a…

Apr02Research and Teaching

[TeX] First TeX documents

After a long winding road working my first hydrological codes (following the Hydromad Tutorial by Felix Andrews, getting to know R environment in Willem Vervoort’s…

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