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The X11 device driver does not provide the X window manager with an icon (_NET_WM_ICON) or, under some circumstances, with a class (WM_CLASS). This hinders usability under the new stable version of Ubuntu, which has a (new) user interface centered around icons. I am not sure if this was a conscious choice by r-core or simply a low priority. In case of the latter, I attach a patch against

...able_B, by="Email", all = FALSE)) - to find only the rows that match from these data frames. Further, I am also interested (using "Email" as the common key) which rows from Table_A did not match with Table_B. I am not sure how to do here. Thanks. On 1 May 2018, at 9:35 pm, Chintanu <chintanu at gmail.com<mailto:chintanu at gmail.com>> wrote: ---------- Forwarded message ---------- From: peter dalgaard <pdalgd at gmail.com<mailto:pdalgd at gmail.com>> Date: Tue, May 1, 2018 ar-help at r-project.org<mailto:r-help at r-project.org>t 9:05 PM Sub...

...uot;, all = FALSE)) - to find only the rows that match from these data frames - based on Email as primary key. Further, I am also interested (using "Email" as the common key) which rows from Table_A did not match with Table_B. I am not sure how to do this here. Thanks and regards, Chintanu On Tue, May 1, 2018 at 8:48 PM, Rui Barradas <ruipbarradas at sapo.pt> wrote: > Hello, > > Is it something like this that you want? > > x <- data.frame(a = c(1:3, 5, 5:10), b = c(1:7, 7, 9:10)) > y <- data.frame(a = 1:10, b = 1:10) > > which(x != y, arr.in...