Comments on: Data Manipulation in R https://www.datanovia.com/en/courses/data-manipulation-in-r/ Data Mining and Statistics for Decision Support Wed, 24 Feb 2021 16:40:21 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Andi https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-21724 Wed, 24 Feb 2021 16:40:21 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-21724 May i know how you create those green chunks and that check mark at the top left corner?

Oh, how to add those square icon of unordered list?

]]> By: Azzeddine REGHAIS https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-21475 Sat, 02 Jan 2021 22:40:18 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-21475 How can I start lessons

]]> By: kassambara https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-19797 Thu, 07 May 2020 14:28:36 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-19797 In reply to Jing Lyu.

Hi, there is no video for the course

]]> By: Jing Lyu https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-19792 Thu, 07 May 2020 14:11:53 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-19792 Hi, the courses only have text, no video?

]]> By: Abdoulaye Sarr https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-3988 Wed, 18 Dec 2019 14:24:29 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-3988 I have a matrix with column data as years as date but when using as.Date it expects something %y%m%d how to rename column to %Y only as date but not character?
example 2001-01-01 rename as 2001
Your comment is awaiting moderation.

]]> By: kassambara https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-2456 Tue, 08 Oct 2019 19:28:50 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-2456 In reply to Abdoulaye Sarr.

Your question is very specific to the HiClimR. You need to refer to the package documentation.

]]> By: Abdoulaye Sarr https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-2452 Tue, 08 Oct 2019 13:53:55 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-2452 I am trying to put my data on a format compatible with HiClimR like TestCase of the package::

$x
               1949  1950  1951  1952  1953  1954  1955  1956  1957  1958  1959  1960  1961  1962  1963
-19.75,-39.75    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA
-19.75,-38.75    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA
$lon
 [1] -19.75 -18.75 -17.75 -16.75 -15.75 -14.75 -13.75 -12.75 -11.75 -10.75  -9.75  -8.75  -7.75  -6.75
[15]  
$lat
 [1] -39.75 -38.75 -37.75 -36.75 -35.75 -34.75 -33.75 -32.75 -31.75 -30.75 -29.75 -28.75 -27.75 -26.75
[15] -

My data is in netcdf I read using below command:
lon <- ncvar_get(nc, "lon")
lat <- ncvar_get(nc, "lat")
time <- ncvar_get(nc, "time")
pr<-ncvar_get(nc, "pre")
How can I create the datframe compatible with HiClimR? similar to the TestCase in the package?

]]> By: kassambara https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-1702 Sun, 17 Feb 2019 07:57:08 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-1702 In reply to Anteneh Abewa.

You can simply use this:

 my_data[, 1] <- as.character(my_data[, 1])

or use dply verbs and specify the column by name:

library(dplyr)
iris <- iris %>%
  mutate(Sepal.Length = as.character(Sepal.Length))
]]> By: Anteneh Abewa https://www.datanovia.com/en/courses/data-manipulation-in-r/#comment-1701 Sun, 17 Feb 2019 00:03:22 +0000 https://www.datanovia.com/en/?post_type=dt_courses&p=7224#comment-1701 How can I put/display the first column from numeric to text?

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