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Turn Pandas Multi-Index into column
... 2 4
2 0 NaN
1 12
3 0 34
df.reset_index(inplace=True) will fail, cause the columns that are created cannot have the same names.
So then you need to rename the multindex with df.index = df.index.set_names(['Trial'...
How can I wrap text to some length in Vim?
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answered May 5 '09 at 12:14
sleskesleske
70.7k3030 gold badges158158 silver badges209209 bronze badges
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How to enter command with password for git pull?
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edited Mar 12 '13 at 13:10
answered Jul 16 '12 at 14:15
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Npm install failed with “cannot run in wd”
I am trying to get my node environment set up on a new Ubuntu 12.04 instance, with Node 0.8.14 already installed, but I ran into problems when I try to run npm install .
So when I try npm install , it says that I need to run it as root or adminisrator:
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How to send emails from my Android application?
...e send?
– KIRAN K J
Jun 23 '11 at 4:12
40
KIRAN: You'll need to look into how Intents work to und...
How can I manipulate the strip text of facet_grid plots?
...t2-options
– Roman Luštrik
Mar 20 '12 at 8:36
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git ignore all files of a certain type, except those in a specific subfolder
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edited May 24 '12 at 10:57
cmbuckley
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Update all values of a column to lowercase
...ive matching.
– Enyby
Jan 19 '18 at 12:39
2
@BjörnC - upper/lower only changes letters; all othe...
Check that Field Exists with MongoDB
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Suppose we have a collection like below:
{
"_id":"1234"
"open":"Yes"
"things":{
"paper":1234
"bottle":"Available"
"bottle_count":40
}
}
We want to know if the bottle field is present or not?
Ans:
db.products.find({"...
Pass a data.frame column name to a function
...ust use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[,column])
}
fun1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a parameter:
fun1 <- function(x, column...