search for: grolemund

Hi, I?m using the R package stats for some analysis, I would like to know if there is any special reference paper to cite this package or just the R paper itself. Thank you very much for your answer, Iriel Joerin [[alternative HTML version deleted]]

Please find below the package announcement for the R package lubridate available from cran. Thank you, Garrett Grolemund Rice University ##lubridate Date-time data can be frustrating to work with in R. R commands for date-times are generally unintuitive and change depending on the type of date-time object being used. Moreover, the methods we use with date-times must be robust to time zones, leap days, daylight savi...

...integer methods for time spans. * cleaner display formats for time span objects * a namespace for the package For an example of how you might use lubridate, calculate the number of days until christmas with: (ymd("2010-12-25") - today()) / ddays(1) --------------------------- Garrett Grolemund Rice University [[alternative HTML version deleted]] _______________________________________________ R-packages mailing list R-packages at r-project.org https://stat.ethz.ch/mailman/listinfo/r-packages

I'm searching for an r command that will notify me if I create a time that does not exist due to Daylight Savings Time. For example, if I run the following command on a windows machine > ISOdatetime(2010,03,14,2,10,0, tz = "") # My system time is set to the United States Central Time Zone [1] NA R returns NA, which is the behavior I want. However, if I run the same command on a

Please find below the package announcement for the R package lubridate available from cran. Thank you, Garrett Grolemund Rice University ##lubridate Date-time data can be frustrating to work with in R. R commands for date-times are generally unintuitive and change depending on the type of date-time object being used. Moreover, the methods we use with date-times must be robust to time zones, leap days, daylight savi...

...integer methods for time spans. * cleaner display formats for time span objects * a namespace for the package For an example of how you might use lubridate, calculate the number of days until christmas with: (ymd("2010-12-25") - today()) / ddays(1) --------------------------- Garrett Grolemund Rice University [[alternative HTML version deleted]] _______________________________________________ R-packages mailing list R-packages at r-project.org https://stat.ethz.ch/mailman/listinfo/r-packages

...://bit.ly/VAGLe3 Guest blogger Andrew Winterman uses R to design interactive data applications: http://bit.ly/VAGLe2 Guest blogger Ron Fredericks shares tips on making videos of R user group meetings, and links to a presentation about Rhipe at Facebook: http://bit.ly/VAGIz2 Guest blogger Garrett Grolemund introduced the ggsubplot package, and gave several examples of using small multiples for data visualization: http://bit.ly/VAGIz3 Guest blogger Naomi Robbins reprised several examples from her Forbes blog where R was used to improve on some substandard charts: http://bit.ly/VAGLe1 Guest blogger N...

Hi everyone, I currently do some statistics about my heart rate variability. I've a CSV file which looks like this: Date Time ts_mean_RR ts_sdnn_RR ts_mean_HR ts_sdnn_HR ts_rmssd 1 20110905 07:21:50.0 1139.8298 40.3053 52.7393 2.2824 45.7958 2 20110906 07:11:37.0 1182.7333 49.1861 50.8665 2.4983 60.2329 3 20110907 07:21:31.0 1136.6028 49.4682 52.9566

The subject of your email is missing. Perhaps you need to read the Posting Guide (again?) about attachments. Embedding your example directly in the body of the email is generally more accessible in archives than attaching it. -- Sent from my phone. Please excuse my brevity. On April 27, 2016 1:14:17 PM GMT+01:00, G.Maubach at gmx.de wrote: >Hi All, > >I am addressing this post to all

Hi All, I am addressing this post to all who are new to R. When learing R in the last weeks I took some notes for myself to have code snippets ready for the data analysis process. I put these snippets together as a script template for future use. Almost all of the given command prototypes are tested. The template script contains snippets for best practices and leaves out the commands that

...de: ?rownames ?split ?lapply ?do.call ?rbind ?group_by ?do You might also find [1] helpful in general, and [2] helpful for understanding dplyr. [1] H. Wickham, The Split-Apply-Combine Strategy for Data Analysis, Journal of Statistical Software, vol. 40, no. 1, Apr. 2011. [2] H. Wickham and G. Grolemund, R for Data Science. OReilly UK Ltd, 2017. URL: https://r4ds.had.co.nz. > > ???????????? basistime fcst > 1?? 2012-01-25 15:02:00 47.9 > 2?? 2012-01-26 15:11:00 50.4 > 3?? 2012-01-27 01:41:00 46.0 > 4?? 2012-01-27 10:15:00 47.3 > 5?? 2012-01-27 15:15:00 47.3 > 6?? 2012-01...

Hello Ulrik, Can you please explain this code means how and what this code is doing because I'm not able to understand it, if you can explain it i can use it in future by doing some Lil bit manipulation. Thanks data_help <- data_help %>% mutate(Purchase_ID = 1:n()) %>% group_by(Purchase_ID) %>% do(split_items(.)) cat_help %>% gather("Foo",

Hi Jeff, Thank you for the suggestions -- I appreciate your help. Unfortunately, the result2 has two problems... (1) there are now 3 date columns (it looks like 2 cols are merged into 1 col) (2) the output rows should not have any of the basistime dates repeated (maybe I misstated the problem); I need the max fcst value by basistime, but also list the date value for that row; for example:

#lubridate lubridate makes it easier to work with dates and times by providing functions to identify and parse date-time data, extract and modify components of a date-time (years, months, days, hours, minutes, and seconds), perform accurate math on date-times, handle time zones and Daylight Savings Time. lubridate has a consistent, memorable syntax that makes working with dates less frustrating.

#lubridate lubridate makes it easier to work with dates and times by providing functions to identify and parse date-time data, extract and modify components of a date-time (years, months, days, hours, minutes, and seconds), perform accurate math on date-times, handle time zones and Daylight Savings Time. lubridate has a consistent, memorable syntax that makes working with dates less frustrating.