Dell Latitude ST shows WiFi hardware disabled

Question

I need to rename several columns in R by adding the same suffix to the name of each column. I am able to do this by copying the rename function and substituting the variable names in every time, but I would like to use a more elegant solution.

Additionally, I am doing this for three different data frames that all have the same columns that I need to rename, so this makes my code even longer. Ideally, I would put all of this in a short for loop or something like that. Here's what I have:

# data frames df1, df2, df3, columns a, b, c, and d:
df1 <- rename(df1, "a.df1" = a)
df1 <- rename(df1, "b.df1" = b)
df1 <- rename(df1, "c.df1" = c)
df1 <- rename(df1, "d.df1" = d)

df2 <- rename(df2, "a.df2" = a)
df2 <- rename(df2, "b.df2" = b)
df2 <- rename(df2, "c.df2" = c)
df2 <- rename(df2, "d.df2" = d)

df3 <- rename(df3, "a.df3" = a)
df3 <- rename(df3, "b.df3" = b)
df3 <- rename(df3, "c.df3" = c)
df3 <- rename(df3, "d.df3" = d)

This works in renaming the columns how I want, but I'd like it to look more like:

for (i in list(df1, df2, df3)) {
    for (j in c("a", "b", "c", "d")) {
        rename(i, "j.i" = j)
    }
}

I've tried a few versions of this loop and can't get it to work. Anyone have a fix?

Solution 1

There aren't any settings in the BIOS that appear to be related to WiFi, but somewhere hidden, there is one. A small note in the manual under the section about replacing the wireless card says:

Optionally if the Latitude ST unit is shipped from the factory without a LAN driver and the driver is installed manually, you will be prompted to turn on the WLAN. The following steps need to be performed to successfully install the WLAN card.

a)Connect a USB keyboard to the computer and restart the computer.

b)Press the F2 key at the Dell logo to “Enter Setup”.

c)Select F9 to load defaults.

d)Select F10 to Save settings and Exit.

WLAN will connect automatically after windows starts up.

This resets the hidden Wireless Radio Enable setting, and removes the Hardware Disable setting.

Solution 2

The answer is simple. In The Atheros Wireless Network Connection Manager, select Action, then Enable Radio. The application is installed together with the driver from the CD. I do not know why there is not in the applications on Dell Support.

Comments

[Duck]

Please add df1 or dput(df1) to make reproducible your issue and help you!

[0xFE]

I thought you might be on to something here. The onscreen keyboard does indeed have the Fn button, but it appears that it behaves differently. Pressing Fn turns the numbers into the F keys, so Fn+F2 is the same as F2 on a normal keyboard. It's a bit of a misnomer it seems.

[0xFE]

The Latitude ST didn't come with a CD. It doesn't even have a CD drive! I remember seeing that program but it wasn't working. At some point when I reinstalled drivers while trying to fix the problem, I think I screwed it up.

[murph]

Thanks! This almost worked perfectly except for two things: 1) I think you had a typo in the "for" part of your code. should be: "for(df_name in names(df_list))". Just switched "=" to "in" 2) this changes variables to e.g. "adf1" whereas the perfect solution would result in "a.df1". Any idea how to fix that?

[onyambu]

@BrianMurphy change the ~paste0(.,df_name) to ~paste0(.,".", df_name) or even ~paste(.,df_name, sep = ".")