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How to Create Cascading Filters in R Shiny Dashboard by TopBullets.com

Topbullets.comIn Data Science visualization is a powerful tool. You can’t sell a concept but a product. Data analytics is science but presenting them through different graphs and charts is an art. We have many ways to present the numbers and a lot of software which make our life easy. Few of them which I have tried are Tableau, R Shiny, D3, QlikView and VBA Dashboard. Every tool has its own advantages and properties. Currently, I am working on R Shiny dashboard which is so beautiful and easy to learn. I would really encourage you to learn R Shiny if you do coding in R. It has a lot of in-built packages which can easily be deployed. Today let’s work on cascading filters one of the most important kinds of filters. Every other filter is connected to the predecessor filter. Continue reading
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Assumptions of Linear Regression by TopBullets.com

Topbullets.comIn my previous post I mentioned some techniques one should know if they want to pursue a career in Data Analytics. In those lines, I would like to discuss a few topics in detail. This blog post is on Linear Regression, that would serve as an easy starter and then I would slowly move to other techniques. Linear regression is the most used technique in data science. Generally, when we say linear regression we refer to additive model which means dependent variable will be a function of all independent variables and there would linear and additive relationships. Continue reading

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How to launch your career in data analytics after college graduation?

Topbullets.comRecently I started answering on Quora. It caught my attention that people pursue a lot of interest in the Analytics domain. Being a blogger, it is my utmost responsibility to cater to the educational needs of the masses, hence this blog will be related to basics of analytics and where to learn, some misconceptions around analytics and career scope. I have 3 years of experience in the Analytics industry, and I would leave this discretion to the readers to decide if they find my blog useful.
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Workplace doesn’t remain work place when you have good friends around you

Topbullets.comI remember one video from my childhood where kids run for school and the lyrics was like we leave our houses early in the morning to meet friends in school. When we used to go in school bus, we used to sing this song altogether and that was a great fun. After that, I don’t think we have ever enjoyed going school or college or office. Now in this corporate world where you need to race against time and perform to be fit for the organization what remains behind is happiness. You may get satisfied with your work, appraisal or salary or a warm handshake from your manager congratulating you in front of everyone but do we really want to see them tomorrow again? Continue reading
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Exporting multiple graphs in same plot to PDF in R – TopBullets.com

Topbullets.comAs being a data scientist, plotting data is one of the first things we generally do. Without studying the behavior of the data we can’t or rather should not move ahead. There can be a lot of analysis which we can perform by plotting the graphs for example univariate, bivariate and residual plots. In my earlier blog, I wrote about how to plot two graphs in the same plot using par () function in R which is very useful when we do bivariate analysis and want to see the behavior of 2 variables across different time duration. Today I will write how to export the plots in PDF and in a tabular format. Generally exporting plots in any format (JPG, PDF) is an easier task but when you have say 50 graphs, you won’t want 50 pages, rather you will want 4 graphs in one page which will be very easier to read or interpret. Continue reading