Like @Gsee suggested, `?Startup` has all you need. Note that there isn&#39;t just the user profile file, but also a site profile file you could have messed with. And that both files can be found in multiple locations.

You could run the following to list existing files on your system among those listed on the page:

    candidates &lt;- c( Sys.getenv(&quot;R_PROFILE&quot;),
                 file.path(Sys.getenv(&quot;R_HOME&quot;), &quot;etc&quot;, &quot;Rprofile.site&quot;),
                 Sys.getenv(&quot;R_PROFILE_USER&quot;),
                 file.path(getwd(), &quot;.Rprofile&quot;),
                 file.path(Sys.getenv(&quot;HOME&quot;), &quot;.Rprofile&quot;))

    Filter(file.exists, candidates)

Note that it should be run on a fresh session, right after your started R, so that `getwd()` will return the current directory at startup. There is also the tricky possibility that your profile files do modify the current directory at startup, in which case you would have to start a &quot;no-profile&quot; session (run `R --no-site-file --no-init-file`) before running the code above.

This is a rather strange issue with jquery. I am loading a div 

    &lt;div id=&quot;container&quot;&gt;

on page load. Each record is tabular data with a &#39;delete&#39; ajax function associated with it. When the page loads and clicking the &#39;delete&#39; link, the ajax call fires off just fine. 
However, once the event is fired, the data is returned from the ajax call, and the div is populated with data (but the page does not refresh or reload) 
When I click the link again, the ajax script will not fire. 
Here is my code:

	$(document).ready(function() {
		$(&quot;button.done&quot;).button({
		}).click(function() {
			var BatchID = $(&quot;input#BatchID&quot;).val();
			var Amount = $(&quot;input#Amount&quot;).val();
			var Name = $(&quot;input#CheckName&quot;).val();
			var Check_Number = $(&quot;input#Check_Number&quot;).val();
			var Company = $(&quot;select#Company&quot;).val();
			var Department = $(&quot;select#Department&quot;).val();
			$.ajax({
				type: &#39;GET&#39;,
				url: &#39;/app/usagCheckEntryWS.html&#39;,
				data: {
					&quot;BatchID&quot; : BatchID,
					&quot;Amount&quot; : Amount,
					&quot;Name&quot; : Name,
					&quot;Check_Number&quot; : Check_Number,
					&quot;Company&quot; : Company,
					&quot;Department&quot; : Department
				},
				success: function (data) {
					    var ang = &#39;&#39;;
					    var obj = $.parseJSON(data);
					    $.each(obj, function() {
					       ang += &#39;&lt;table&gt;&lt;tr&gt;&lt;td width=&quot;45&quot;&gt;&#39; + this[&quot;RefID&quot;] + &#39;&lt;/td&gt;&lt;td width=&quot;140&quot;&gt;&#39; + this[&quot;Name&quot;] + &#39;&lt;/td&gt;&lt;td width=&quot;95&quot;&gt;&#39; + this[&quot;CheckNumber&quot;] + &#39;&lt;/td&gt;&lt;td align=&quot;right&quot; width=&quot;70&quot;&gt;$&#39; + this[&quot;Amount&quot;] + &#39;&lt;/td&gt;&lt;td width=&quot;220&quot; style=&quot;padding-left: 15px;&quot;&gt;&#39; + this[&quot;Description&quot;] + &#39;&lt;/td&gt;&lt;td&gt;&lt;div class=&quot;delete&quot; rel=&quot;&#39; + this[&quot;RefID&quot;] + &#39;&quot;&gt;&lt;span&gt;Delete&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&#39;;
					    });
					    $(&#39;#container&#39;).html(ang);
					 	$(&quot;input#Amount&quot;).val(&#39;&#39;);
					 	$(&quot;input#CheckName&quot;).val(&#39;&#39;);
					 	$(&quot;input#Check_Number&quot;).val(&#39;&#39;);
					 	$(&quot;select#Company&quot;).val(&#39;MMS&#39;);
					 	$(&quot;th#dept&quot;).hide();
						$(&#39;input#CheckName&#39;).focus();
				}
			});
		});
	});
&lt;/script&gt;

Jquery Event won&#39;t fire after ajax call

What&#39;s the verdict on when you should use another `&lt;p&gt;...&lt;/p&gt;` instead of a `&lt;br /&gt;` tag? What&#39;s are the best practices for this kind of thing?

I looked around for this question, but most of the writing seems a bit old, so I&#39;m not sure whether opinions about this topic have evolved since.

EDIT: to clarify the question, here is the situation that I am dealing with. Would you use `&lt;br&gt;`&#39;s or `&lt;p&gt;`&#39;s for the following content (imagine it&#39;s contained in a div on a homepage):

____________

Welcome to the home page.

Check out our stuff.

You really should.

_______

Now, these lines are not technically &#39;paragraphs&#39;. So would you mark this up by surrounding the whole block in a `&lt;p&gt;` tag with `&lt;br&gt;`&#39;s in between, or instead use separate `&lt;p&gt;`&#39;s for each line?


When to use &lt;p&gt; vs. &lt;br&gt;

In R and RStudio, I think I have messed around with the `.Rprofile` file a few times, and I currently am loading up an old version of it upon startup of R or RStudio, is there a way that I can quickly find the location of the file that is generating the default options?

Thanks

Locate the &quot;.Rprofile&quot; file generating default options

<p>In R and RStudio, I think I have messed around with the <code>.Rprofile</code> file a few times, and I currently am loading up an old version of it upon startup of R or RStudio, is there a way that I can quickly find the location of the file that is generating the default options?</p>
<p>Thanks</p>


I would like to randomly reorganize the order of the numbers in a vector, in a simple one-line command?

My particular vector V has 150 entries for each value from 1 to 10:

    V &lt;- rep(1:10, each=150)

How to randomize a vector

I have a data frame, like so:

    data.frame(director = c(&quot;Aaron Blaise,Bob Walker&quot;, &quot;Akira Kurosawa&quot;, 
                            &quot;Alan J. Pakula&quot;, &quot;Alan Parker&quot;, &quot;Alejandro Amenabar&quot;, &quot;Alejandro Gonzalez Inarritu&quot;, 
                            &quot;Alejandro Gonzalez Inarritu,Benicio Del Toro&quot;, &quot;Alejandro Gonz&#225;lez I&#241;&#225;rritu&quot;, 
                            &quot;Alex Proyas&quot;, &quot;Alexander Hall&quot;, &quot;Alfonso Cuaron&quot;, &quot;Alfred Hitchcock&quot;, 
                            &quot;Anatole Litvak&quot;, &quot;Andrew Adamson,Marilyn Fox&quot;, &quot;Andrew Dominik&quot;, 
                            &quot;Andrew Stanton&quot;, &quot;Andrew Stanton,Lee Unkrich&quot;, &quot;Angelina Jolie,John Stevenson&quot;, 
                            &quot;Anne Fontaine&quot;, &quot;Anthony Harvey&quot;), AB = c(&#39;A&#39;, &#39;B&#39;, &#39;A&#39;, &#39;A&#39;, &#39;B&#39;, &#39;B&#39;, &#39;B&#39;, &#39;A&#39;, &#39;B&#39;, &#39;A&#39;, &#39;B&#39;, &#39;A&#39;, &#39;A&#39;, &#39;B&#39;, &#39;B&#39;, &#39;B&#39;, &#39;B&#39;, &#39;B&#39;, &#39;B&#39;, &#39;A&#39;))

As you can see, some entries in the `director` column are multiple names separated by commas. I would like to split these entries up into separate rows while maintaining the values of the other column. As an example, the first row in the data frame above should be split into two rows, with a single name each in the `director` column and &#39;A&#39; in the `AB` column.

Split comma-separated strings in a column into separate rows

I asked [a question][1] on how to plot dynamically according to user interactions, whose solution
works quite well on my machine. 

Now I want to make an on-line version and host it with [Shiny][2]. 

I have tried to put the code into `server.R` and invoke the `iden()` function inside `reactivePlot()`, but the part of `identify()` does not take effect. 

So, any hints on this task?


  [1]: https://stackoverflow.com/q/13714724/688080
  [2]: http://shiny.rstudio.org/

Use D3 and Shiny to implement `identify()` in R

I would like to insert an extra character (or a new string) at a specific location in a string. For example, I want to insert `d` at the fourth location in `abcefg` to get `abcdefg`.

Now I am using: 

    old &lt;- &quot;abcefg&quot;
    n &lt;- 4
    paste(substr(old, 1, n-1), &quot;d&quot;, substr(old, n, nchar(old)), sep = &quot;&quot;)

I could write a one-line simple function for this task, but I am just curious if there is an existing function for that.



Insert a character at a specific location in a string

I have a very basic `R` question but I am having a hard time trying to get the right answer. I have a data frame that looks like this:

``` species&lt;-&quot;ABC&quot;
 ind&lt;-rep(1:4,each=24)
 hour&lt;-rep(seq(0,23,by=1),4)
 depth&lt;-runif(length(ind),1,50)

 df&lt;-data.frame(cbind(species,ind,hour,depth))
 df$depth&lt;-as.numeric(df$depth)
```

What I would like it to select AND replace all the rows where `depth &lt; 10` (for example) with zero, but I want to keep all the information associated to those rows and the original dimensions of the data frame.

I have try the following but this does not work.

``` df[df$depth&lt;10]&lt;-0 ```

Any suggestions?

Content Type	Original Author	Original Content on Stackoverflow
Question	h.l.m	View Question on Stackoverflow
Solution 1 - R	flodel	View Answer on Stackoverflow

Locate the ".Rprofile" file generating default options

R Problem Overview

R Solutions

Solution 1 - R

When to use <p> vs. <br>

Jquery Event won't fire after ajax call

Attributions