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POprint method is behaving strangely for dataframes
 

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  1. POprint method is behaving strangely for dataframes
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    <p>When I try to display the contents of a dataframe, I am getting some strange output (see the screenshot below). I am using <code>head()</code> here but the behavior is the same for any display of a dataframe. </p> <p><img src="https://i.stack.imgur.com/9FApM.png" alt="Screenshot of RStudio"></p> <p>The behavior only seems present in RStudio. As shown below, my base installation of R behaves as expected. </p> <p><img src="https://i.stack.imgur.com/VRYhk.png" alt="Screenshot of base R installation"></p> <p>My sessionInfo is as follows: </p> <pre><code>&gt; sessionInfo() R version 3.0.1 (2013-05-16) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: _LC_COLLATE=English_United States.1252_, _LC_CTYPE=English_United States.1252_, _LC_MONETARY=English_United States.1252_, _LC_NUMERIC=C_ and _LC_TIME=English_United States.1252_ attached base packages: _stats_, _graphics_, _grDevices_, _utils_, _datasets_, _methods_ and _base_ loaded via a namespace (and not attached): _digest_0.6.3_, _pander_0.3.8_ and _tools_3.0.1_ </code></pre> <p>Any thoughts as to what is going on?</p> <p>UPDATE</p> <p>In response to Hong Ooi, I am displaying the results of <code>getAnywhere("print.data.frame")[1:2]</code> below. </p> <pre><code>$`package:base` function (x, ..., digits = NULL, quote = FALSE, right = TRUE, row.names = TRUE) { n &lt;- length(row.names(x)) if (length(x) == 0L) { cat(gettextf("data frame with 0 columns and %d rows\n", n)) } else if (n == 0L) { print.default(names(x), quote = FALSE) cat(gettext("&lt;0 rows&gt; (or 0-length row.names)\n")) } else { m &lt;- as.matrix(format.data.frame(x, digits = digits, na.encode = FALSE)) if (!isTRUE(row.names)) dimnames(m)[[1L]] &lt;- if (identical(row.names, FALSE)) rep.int("", n) else row.names print(m, ..., quote = quote, right = right) } invisible(x) } &lt;bytecode: 0x0000000009f8e570&gt; &lt;environment: namespace:base&gt; [[2]] function (x, ..., digits = NULL, quote = FALSE, right = TRUE, row.names = TRUE) { n &lt;- length(row.names(x)) if (length(x) == 0L) { cat(gettextf("data frame with 0 columns and %d rows\n", n)) } else if (n == 0L) { print.default(names(x), quote = FALSE) cat(gettext("&lt;0 rows&gt; (or 0-length row.names)\n")) } else { m &lt;- as.matrix(format.data.frame(x, digits = digits, na.encode = FALSE)) if (!isTRUE(row.names)) dimnames(m)[[1L]] &lt;- if (identical(row.names, FALSE)) rep.int("", n) else row.names print(m, ..., quote = quote, right = right) } invisible(x) } &lt;bytecode: 0x0000000009f8e570&gt; &lt;environment: namespace:base&gt; </code></pre>
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    1. COLooks like something is overriding the default `print.data.frame` method when Rstudio is running. Type `getAnywhere("print.data.frame")` to see what's being called.
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      1. USHong Ooi
    2. COThe output in the RStudio window is the output you get from "pander". Try detaching the "pander" package and see if the problem persists. (That said, I use "pander" and have never noticed this problem, hence my comment and not an answer.)
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    3. CO@AnadaMahto, I have tried detaching "pander" with no luck. I did notice that pander was mentioned in the sessionInfo() output as "loaded via a namespace (and not attached):" but am not sure how to interpret it. I am adding a pander tag to this post...
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