I built a model, using plm package. The sample dataset is here. I am trying to predict on test data and calculate metrics. # Import package library(plm) library
I have a list: x <- c("1", "2", "2", "3", "3", "3", "2", "2", "3", "3", "3","2", "2", "2", "2") What I need to do is make them shortened like this. 1 2 3 2
I'm currently working on an university research related software which uses statistical models in it in order to process some calculations around Item Response
I have the following two datasets: df1 <- data.frame( "group" = c(1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5), "numbers" = c(55, 75, 60, 55, 75, 60, 5
I've got a database with free text fields that I want to use to filter a data.frame or tibble. I could perhaps with lots of work create a list of all possible m
The following code generates data files where each row has a different number of columns. The option fill=TRUE appears to work only when a certain character lim
I've been facing in R the error message for days using getSymbols of the quantmod package: Error in new.session() : Could not establish session after 5 attempts
I'm a college student and we have to create some graphs using Rstudio for an assignment. I've managed to do the core objective for this first task, which is to
I have this dummy data as example: library(ggplot2) library(gganimate) dummy <- data.frame(year = 2000:2022, inside = rnorm(23),
I have a raster, and want to only retain the sea part of the raster, and remove the land part or the raster. If my raster is "ras" and my SpatialpolygonDataFRam
I am hoping to create a custom-styled example environment within r markdown that renders pdf output. I want something that looks like this or like this, but I s
I was trying to plot the max values from a dataset with x-axis = Date and the y-axis = max_value grouped by Stations, like the picture I found on this link, but
I bring you a problem in which I have found myself when doing a job. I need to perform a 'drilldown' that contains around 100 columns and I am running into an e
I'm trying to wrangle a json file into a data frame but I'm having trouble when unnesting to a wider format because the columns contain lists of unequal sizes.
I'm trying to find an easy, up-to-date way to plot transition matrices. Could someone please recommend a method or package? I found advice on Stack, but the pos
I want to find an algorithm to generate ticks in a power scale in a human-friendly way. For example, if the power is 1/2, between the range of [0, 100], without
I have a simple features panel data with the murders in the 32 Mexican states through 24 years. I want to create an index taking as a base the first year in my
I have .nc file sizing around 651 MB with a couple of datasets (daily) (rr_mrg_19810101_20181231_ENACT.nc) data. I need to convert (rr_mrg_19810101_20181231_EN
I have a dataframe with two columns, zip and CSZip. I am trying to apply a function to each row using: dist <- apply(vf, 1, zip_distance(zip, CSZip, lonlat =
I am trying to add a row index column to a reactive data frame created on-the-fly from user inputs. I am able to do this outside of Shiny using the tibble::rowi