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kandi X-RAY | juliasilge.com Summary

juliasilge.com is a HTML library typically used in Web Site, Static Site Generator, Jekyll applications. juliasilge.com has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

This blog is built with blogdown and Hugo, with the Academic theme. I deploy my blog using Netlify. My blog posts are released under a Creative Commons Attribution-ShareAlike 4.0 International License.

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juliasilge.com has a low active ecosystem.

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It had no major release in the last 6 months.

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Community Discussions

Trending Discussions on juliasilge.com

Tidymodels / XGBoost error in last_fit with rsplit value

Change factor label ggplot when scale_x_reordered() is present

How to apply the trained & tested random forest model to a new dataset in tidymodels?

running multiple regression models using tidymodels

bold an item in axis label after using reorder_within

Make a bar plot with positive and negative values

QUESTION

Tidymodels / XGBoost error in last_fit with rsplit value

Asked 2021-Jun-15 at 04:08

I am trying to follow this tutorial here - https://juliasilge.com/blog/xgboost-tune-volleyball/

I am using it on the most recent Tidy Tuesday dataset about great lakes fishing - trying to predict agency based on many other values.

ALL of the code below works except the final row where I get the following error:

...

ANSWER

Answered 2021-Jun-15 at 04:08

If we look at the documentation of last_fit() We see that split must be

An rsplit object created from `rsample::initial_split().

You accidentally passed the cross-validation folds object stock_folds into split but you should have passed rsplit object stock_split instead

Source https://stackoverflow.com/questions/67978723

QUESTION

Change factor label ggplot when scale_x_reordered() is present

Asked 2021-Jun-04 at 12:17

I am creating a box plot in which I have used scale_x_reordered() after adjusting the order of factors on the x axis.

I am now trying to change the label of one factor. I had previously been doing this using:

scale_x_discrete(labels=c("old_label" = "new_label"))

However, I cannot use both scale_x_discrete() and scale_x_reordered() in the same plot. Does anyone know of a fix so that I can change a label and keep scale_x_reordered?

My ggplot is based off of this very helpful example: linked here

The change I am trying to make is equivalent to manually changing the name "Michael" to "Mike".

...

ANSWER

Answered 2021-Jun-04 at 12:17

To achieve your desired result I would suggest to recode your factor before applying reorder_within.

The reason is that reorder_within transforms the factor levels to make the reordering within facets work. Inside scale_x_reordered a re-transformation is applied via the labels argument to show the original levels or labels. That's why you can't make use of the labels argument.

In the following example taken from the link you posted I make use of dplyr::recode(name, "Michael" = "Mike") just before reorder_within:

Source https://stackoverflow.com/questions/67830482

QUESTION

How to apply the trained & tested random forest model to a new dataset in tidymodels?

Asked 2021-May-06 at 18:38

I have trained and tested a random forest model in R using tidymodels. Now i want to use the same model to predict a completely new dataset (not the training dataset).

For example Julia silge, had explained the steps to train, test and evaluate a model in this blog post : Juliasilge's palmer penguins. I wanted to apply this model on a completely new dataset with same columns (except the prediction column(here sex))

Can anyone help me with the code for predicting on a new dataset.

I can explain what i have tried with a sample dataset

...

ANSWER

Answered 2021-May-05 at 18:19

The problem in your code is you are trying to fit the final model on new data which lacks the target variable sex this is what the error is telling you.

Source https://stackoverflow.com/questions/67384206

QUESTION

running multiple regression models using tidymodels

Asked 2021-Feb-09 at 21:57

I've recently been using tidymodels to run models and select parameters that best satisfy some objective function. For example using a hypothetical regression on mtcars data (using the regression examples from the bottom answer of this question as an example)

...

ANSWER

Answered 2021-Feb-09 at 21:57

There is an experimental package we are developing to do just this called workflowsets. You can install it from GitHub for now, if you are up for trying out a new, still-developing package:

Source https://stackoverflow.com/questions/66117523

QUESTION

bold an item in axis label after using reorder_within

Asked 2020-Sep-22 at 21:51

I am using the reorder_within() function from the tidytext package in R to make a plot of different frequencies. An analogous example comes from here.

...

ANSWER

Answered 2020-Sep-22 at 21:40

In contrast to the solutions in the answer linked by @tamtam, here is a solution that requires minimal overhead: You can use ggtext::element_markdown to interpret any text in the ggplot as markdown. Just add axis.text.y = ggtext::element_markdown() and all variable names that have the form "**Name**" are shown in bold:

Source https://stackoverflow.com/questions/64017692

QUESTION

Make a bar plot with positive and negative values

Asked 2020-Feb-04 at 12:11

Having a dataframe like this:

...

ANSWER

Answered 2020-Feb-04 at 12:11

You can use the following code

Source https://stackoverflow.com/questions/60056683

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