search for: new_col

Hello, Being new to R, I am completely stuck with the following problem. Please help to find a general solution to the following matrix task: Given: N<-4 input_mat<-matrix(c(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0),ncol=N)

...is near instant, <5 seconds test <- as.Date(etc) when I place it over itself it takes ~20 minutes morbidity$adm_date <- as.Date(etc) when I place the vector over it (so no computation involved), or place it as a new column it still takes ~20 minutes morbidity$adm_date <- test morbidity$new_col <- test when I tried a cbind to add it that way it took >20 minutes new_morb <- cbind(morbidity,test) Has anyone done something similar or know of a different command that should work faster? I can't get my head around what R is doing, if it can create the vector instantly then the co...

cbind/ rbind/ data.frame functions are very convenient for merging vectors of different types into a single data frame, but take quite a bit of time to execute on larger data sets. Is it possible to speed these up a bit? What functions do you use instead? Thanks & regards, Charles

...1ae973041a 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -1033,7 +1033,7 @@ static void fbcon_init(struct vc_data *vc, int init) struct vc_data *svc = *default_mode; struct fbcon_display *t, *p = &fb_display[vc->vc_num]; int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; - int cap, ret; + int ret; if (WARN_ON(info_idx == -1)) return; @@ -1042,7 +1042,6 @@ static void fbcon_init(struct vc_data *vc, int init) con2fb_map[vc->vc_num] = info_idx; info = registered_fb[con2fb_map[vc->vc_num]]; - cap = info->flags;...

...a/drivers/video/fbdev/core/fbcon.c > +++ b/drivers/video/fbdev/core/fbcon.c > @@ -1033,7 +1033,7 @@ static void fbcon_init(struct vc_data *vc, int init) > struct vc_data *svc = *default_mode; > struct fbcon_display *t, *p = &fb_display[vc->vc_num]; > int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; > - int cap, ret; > + int ret; > > if (WARN_ON(info_idx == -1)) > return; > @@ -1042,7 +1042,6 @@ static void fbcon_init(struct vc_data *vc, int init) > con2fb_map[vc->vc_num] = info_idx; > > info = registered_fb[con2fb_map[vc->...

...> +++ b/drivers/video/fbdev/core/fbcon.c > > @@ -1033,7 +1033,7 @@ static void fbcon_init(struct vc_data *vc, int init) > > struct vc_data *svc = *default_mode; > > struct fbcon_display *t, *p = &fb_display[vc->vc_num]; > > int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; > > - int cap, ret; > > + int ret; > > > > if (WARN_ON(info_idx == -1)) > > return; > > @@ -1042,7 +1042,6 @@ static void fbcon_init(struct vc_data *vc, int init) > > con2fb_map[vc->vc_nu...

So ever since syzbot discovered fbcon, we have solid proof that it's full of bugs. And often the solution is to just delete code and remove features, e.g. 50145474f6ef ("fbcon: remove soft scrollback code"). Now the problem is that most modern-ish drivers really only treat fbcon as an dumb kernel console until userspace takes over, and Oops printer for some emergencies. Looking at

...;> when I place it over itself it takes ~20 minutes >> morbidity$adm_date <- as.Date(etc) >> when I place the vector over it (so no computation involved), or place it > as >> a new column it still takes ~20 minutes >> morbidity$adm_date <- test >> morbidity$new_col <- test >> when I tried a cbind to add it that way it took>20 minutes >> new_morb <- cbind(morbidity,test) >> >> Has anyone done something similar or know of a different command that > should >> work faster? I can't get my head around what R is doing, i...