Code semantics tune_grid()

[jdtrat]

Hi, I'm having an issue with the tune_grid function. Below are different ways to pull the results of a model. The first three have an error, but the last one does not. To me, they are equivalent, but I'm not sure if they actually are the same. Before continuing the lab, I want to make sure that by using the fourth method, I get the correct results. More so, I'm wondering why does the fourth method work but the first three do not?

[LucyMcGowan]

Hmm I'm wondering if you have an old version of tidymodels (or tune?) What version to you currently have installed? If you run ?tidymodels you should see the version at the bottom of the help file (should be at least 0.1.0) the same for ?tune should be 0.0.1.9. If your tune package is out of date run:

devtools::install_github("tidymodels/tune")

In the console. Let me know if that helps!

[jdtrat]

Thanks, Dr. McGowan! I updated tune (along with dplyr and other packages). Now when I run the code (fourth way in screenshot above), I get the following message. Apparently last_fit() is also affected.

Should I keep my code using the fourth method or change it?

Thanks!

[LucyMcGowan]

I would actually suggest the first way - let me know if that doesn’t work!

On Sun, Mar 22, 2020 at 9:22 PM jdtrat notifications@github.com wrote:

Thanks, Dr. McGowan! I updated tune (along with dplyr and other packages). Now when I run the code (fourth way in screenshot above), I get the following message. Apparently last_fit() is also affected.

Should I keep my code using the fourth method or change it?

Thanks!

[image: image] https://user-images.githubusercontent.com/51417262/77270667-f595b980-6c82-11ea-85e8-f2dac6354339.png

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[michaeljurgens]

When I try to run devtools::install_github("tidymodels/tune") in the console I'm now getting this errorError in loadNamespace(name) : there is no package called ‘devtools’. Is there some other package I need to install?

[jdtrat]

Try running install.packages("devtools") and retry

[michaeljurgens]

Yes that worked thank you so much, tried it before but forgot to put quotes

[jdtrat]

Ofc!