In R, I have an element x and a vector v. I want to find the first index of an element in v that is equal to x. I know that one way to do this is: which(x == v)[[1]], but that seems excessively

2015年1月30日 · I had a similar requirement where I have to create a new column in the data frame having the value that is matched from the vector. I am using indx2 as I was able to …

2016年12月1日 · R squared between two arbitrary vectors x and y (of the same length) is just a goodness measure of their linear relationship. Think twice!! R squared between x + a and y + …

2009年5月21日 · This much works, but I also want to calculate r (coefficient of correlation) and r-squared(coefficient of determination). I am comparing my results with Excel's best-fit trendline …

2018年5月9日 · How to check if a vector contains a given value? The superior readability is.element() vs %in% is subjective. A case can be made that an infix operator is more readable …

Find row number based on value r. Hot Network Questions MCU: Multiplexing a 7 channel ADC to have 16 ...

There are many different ways to compute R^2 and the adjusted R^2, the following are few of them (computed with the data you provided): from sklearn.linear_model import …

With a dataframe like this one: ID Year Temp ph 1 P1 1996 11.3 6.80 2 P1 1996 9.7 6.90 3 P1 1997 9.8 7.10 ... 2000 P2 1997 10.5 6.90

2016年6月22日 · I am working with the dataset LearnBayes. For those that want to see the actual data: install.packages('LearnBayes') I am trying to filter out rows based on the value in the …

I'm choosing this answer, because (1) it works without installing a new library and (2) because I find the logic behind it simple and elegant. – user1322720 Commented Jun 5, 2013 at 12:48