Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 5 years ago.
Improve this question
I have a file with 120k records and the key is the username. I want to delete records for some username.
Delete all records for username in "ABC","dd","EEE" etc.
I am using R language
You could also use this.
df1[!(df1$username %in% c("ABC","dd","EEE")),]
df1[!(df1$username %in% c("ABC","dd","EEE")),]
Let me know if its still not working.
~Ashish
Related
Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 2 years ago.
Improve this question
Currently, I am writing a cloud function, i need a way to get the device id tokens of some devices, which i have stored in a field of a collection in a document.
How can I access it?
Please help, i'm stuck at this.
You can try code:
firebaseMessaging.getToken().then((token) {
Firestore.instance.collection('collectionName').document(currentUserId).updateData({'pushToken': token});
})
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 4 years ago.
Improve this question
I have stored the model in .mod extension.
Now I have to read the file.
Tried installing ProTrackR package and read using read.module.
But not able to read the file.
You can try
read.module(filename, ignore.validity = F)
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 5 years ago.
Improve this question
I am new to R and have no idea how to complete this problem:
Using R. Create a program that prompts the user for his full name. Your code should swap the first name to last and last name to first and display the result.
Please help!
nameprint=function(){
name=readline(">What is your full name? ")# prompts the user for his full name
reversed_name=sub("(.*)\\s(.*)","\\2 \\1",name)# Reverses the name
cat("Your name is:",reversed_name) #Prints the name
}
nameprint()
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 7 years ago.
Improve this question
I want to create a program which allow in html to read excel data and form a graph but I do not know how to do it.
Any idea how to do it? Possible then could you send me a link I can look to start the project?
Take a look at js-xlsx(https://github.com/SheetJS/js-xlsx) library using tha t you can parse excel files.
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 8 years ago.
Improve this question
If I have a list of movies that I am planning on storing inside of a database, and each movie has a list of strings (actors) for that movie. How do I store that?
You will have to create 3 table (for proper normalization)
1 table.> Movies (movieid,moviename)
2 table.> actors (actorid,actorname)
3 table.> movies_actor_relation (relationid, movieid,actorid)
column name ending with id are primary keys.