cuba | CUBA Platform is a high level framework | Web Framework library

I recently started using the stars R package. I'm struggling with reassigning NA values to "Unknown". I found a potential solution here, but it doesn't seem to work on NAs. Any suggestions to fix this issue are greatly appreciated. for some reason SO doesn't like huge chunks of code without adding more information, so i'm adding some random text at the bottom.

Here's the code that I used:

here is how my dataset looks like, I am trying to filter out country that the 4th column is >= 1000.

My data is like this:

I have this df1 with a lot of different news articles. An example of a news article is this:

I have a dataframe which contains some numbers with dates and country information:

I have a list that I've extracted from a table for the purpose of cleaning up the data and then adding it back as a new clean column. The column originally included country names and codes with some special characters ("*"). So far, I have this code working to remove the codes in parentheses and the special characters (which might not be the easiest way to do it), however the last line isn't removing the spaces:

I am trying to use pro-gallery library in my project and it accepts an array of image like this :

I have a map of this type:

I want to export a long table from R to LaTeX using the tabularx environment in the output. I only know to do this in a rather hacky manner, combining the kableExtra package with gsub(), to address the width of the X column. If I don't use gsub(),. kableExtra doesn't define the width of the X column and the LaTeX code doesn't run. Is there any package to do this more seamlessly? (Incidentally, I also would like to move the footnotes before "\endfoot", rather than before "\endlastfoot".)