Efficient R

[@iyedghedamsi3016]

I didn't know about the collapse package, this is an amazing discovery ! Thank you for this content

[@stephenchukwuemeka3229]

Thanks for this lecture. I start using the collapse package

[@gabrielmurarideandrade5755]

Special thanks from a brazilian economist! Learned a lot.

[@ahmedmo8814]

Thanks for such an amazing KZbin video. I am a PhD student and this will help me optimize my codes and safe some parts of my memory for other uses. Big love

[@selinabaldauf7529]

Thank you for your nice feedback 😊

[@charleydublin7304]

THANK YOU - one of the best videos I have had on R in some time

[@aswanijehangeer]

Great Presentation, Selina. 👍

[@retselisitsoemonyake7060]

Thank you so much for such an informative video.

Great video. I didn't know a lot of the packages, thanks for the clear explanations.

[@sebymusundi4715]

Very informative on how to optimize R code

[@Sergio-pq3ri]

Thanks Selina.

[@mouradhamimed5432]

Thanks a lot, great peace of knowledge

[@henriquecoelhandrade]

Amazing video! I work as an econometrician and your presentation gives me a lot of ideas 😊 Could you share your presentation as a pdf file?

[@selinabaldauf7529]

Thanks for your nice feedback, good to hear that you got ideas from it! A bit clunky, but you can download the presentation pdf from the depths of my Github project: github.com/selinaZitrone/tools_and_tips/blob/main/docs/slides/2023_11_16_efficient_r.pdf

[@osmanuamadu2084]

Thanks from Ghana.

[@user-sq9wp2ge4h]

Thanks from the Netherlands :)

[@sebastianblandonlondono9734]

Great and useful video, thank you so much!

[@pipertripp]

This was great! Thanks Selina!!

[@haimkichik]

Amazing video. Thanks you, I will start learning from u.

[@elcuartokage]

Great video 👏🏻👏🏻👏🏻👏🏻

[@omarj236]

this realy helps me with my studies! Thank you Selina

[@datahoffmann]

I loved this content

[@user-sq9wp2ge4h]

If possible, could you share the link that you mention in the video concerning a course on parallelisation?

[@selinabaldauf7529]

Sure. You might consider starting with these two ressources: - Tutorial on the futureverse: henrikbengtsson.github.io/future-tutorial-user2022/index.html - Documentation website of the futureverse with link to further tutorials etc: www.futureverse.org/ Happy Coding :)

[@user-sq9wp2ge4h]

@@selinabaldauf7529 thank you so much

[@haraldurkarlsson1147]

Very nice!

[@caty863]

By far, my efficiency hurdles with R are in terms of memory usage. I don't really understand why R needs to load all the dataset into memory before working with it. I am sure the clever guys at Posit could address this issue if they chose to.

[@xaviercasas100]

Hi i create parameterized report for about 30 staff using for loop i think using apply function would be faster thanks for the video 👍. Are you on linked in :)

[@selinabaldauf7529]

Hope you managed to make your loop faster. If in doubt, use profiling to see where your bottleneck is. Oh, and I am not on LinkedIn :)

[@krushnachChandra]

You have new sub

[@winspyre]

👍

[@CanDoSo_org]

Thanks, when using collapse, "filter" is still "filter", not "ffilter", right?

[@selinabaldauf7529]

You are welcome :) Actually, the collapse package does not have a function called "filter". To have a fast filter for rows in a table, you can use the function "fsubset". It works similar to the "subset" function in base R, just faster. On the package homepage, you can also find a nice cheat sheet with a list of all collapse functions for different purposes: sebkrantz.github.io/collapse/

[@CanDoSo_org]

Thanks.@@selinabaldauf7529

[@generalyoutubewatching5286]

Efficient R is an oxymoron surely

[@selinabaldauf7529]

@@generalyoutubewatching5286 Yes this argument can be made for sure 😃. Maybe it's more about "efficient enough R" or "more efficient R". But for sure R should not be used if efficiency is the main requirement for a project 😉 But at least in my field (biological science) it's efficient enough for most tasks

[@yildirimakbal6723]

That means do not write in R.

[@selinabaldauf7529]

Well, I guess it depends on what you want to do 😊 but if speed is the priority, R might not be the right choice

[@caty863]

*sf::st_intersection(),* the epitome of least efficient code in the universe!

[@selinabaldauf7529]

Do you by any chance know a more efficient function that does the same thing?

[@caty863]

@baldauf7529not in R. But performing the same operation in GUI-based packages like QGIS is lightning fast compared to this function. I haven't managed to know why this is so slow at this level.