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Difference between Pandas where() function and mask() function

October 10, 2022 by cmdlinetips

Difference between Pandas mask() and where()

Pandas mask() and where() functions are two related functions that are useful in Pandas to find if elements of Pandas dataframe satisfy a condition. They both preserve the shape of the dataframe. In this post, we will first see simple examples of using Pandas where() and mask() functions and then we will learn the key […]

Filed Under: Pandas 101, Python Tips, Uncategorized Tagged With: Pandas mask, Pandas where(), Pandas where() vs mask()

6 Tips to change column positions with dplyr’s relocate()

August 9, 2022 by cmdlinetips

Sometimes you want to change the order of columns in a dataframe. dpyr’s relocate() function makes it easy to move one or more columns to new positions easily by using the same syntax as select() function. In this post we will see 7 tips to change column order or column position using dplyr’s relocate(). Let […]

Filed Under: R, R Tips, tidyverse 101, Uncategorized Tagged With: change column position R, dplyr relocate()

3 Different ways to add regression line in ggplot2

June 24, 2022 by cmdlinetips

How to add regression line to scatterplot using geom_line()

In this post, we will learn how to add simple regression line in three different ways to a scatter plot made with ggplot2 in R. This is something I have to google almost every time, so here is the post recording the options to add linear regression line. We will use palmer penguin data to […]

Filed Under: R Tips, Uncategorized Tagged With: add regression line geom_abline, add regression line geom_line, add regression line geom_smooth

Pandas map: Change Multiple Column Values with a Dictionary

April 30, 2021 by cmdlinetips

Pandas Change Multiple Columns Values with map

In this tutorial, we will learn how to use Pandas map() function to replace multiple column values using a dictionary. Earlier, we saw how to use Pandas replace() function to change the values in multiple columns using dictionary. As we all know, there are multiple solutions to a problem. Pandas map() function works with Pandas […]

Filed Under: Pandas 101, Python, Python Tips, Uncategorized Tagged With: Pandas map(), Pandas replace column values

Data Science Books on Black Friday Deals 2019

November 29, 2019 by cmdlinetips

Amazon is running a limited time book deal on Black Friday 2019, in which you can get three books for the price of two books. (The offer is still available as of 7am (EST).) Basically if you buy three books from a list, you don’t pay for the book with the least price. Are you […]

Filed Under: Uncategorized

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