Error in Regression

[ramgouveia]

I'm trying to do a regression

When I execute this code:

olsreg <- lm(Y ~ as.matrix(X))

I get this error message

Error in `[[<-.data.frame`(`*tmp*`, i, value = c(2L, 3L, 3L, 3L, 3L, 3L, : replacement has 1316371 rows, data has 188053

The X matrix has values from seven 7 variables. Seven is precisely 1316371 / 188053 = 7

Can you help me solving this error?

[pieterjanvc]

Hi,

In order for us to help you with your question, please provide us a minimal reproducible example where you provide a minimal (dummy) dataset and code that can recreate the issue. Once we have that, we can go from there. For help on creating a Reprex, see this guide:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

Good luck!
PJ

[ramgouveia]

I had a bad specification of the model.

I wanted to do a linear regression, a logit regression and a probit regression with categorical factor variables with several levels.

I used the following three links to correctly specify the models:

CODING FOR CATEGORICAL VARIABLES IN REGRESSION MODELS | R LEARNING MODULES

PROBIT REGRESSION | R DATA ANALYSIS EXAMPLES

LOGIT REGRESSION | R DATA ANALYSIS EXAMPLES

Now I have results to analyse.

Thank you @pieterjanvc