Top "Count" questions

How to add count of unique values by group to R data.frame

I wish to count the number of unique values by grouping of a second variable, and then add the count …

r count unique aggregate

Order by COUNT per value

I have a table which stores IDs and the city where the store is located. I want to list all …

mysql sql count sql-order-by

Counting word frequency and making a dictionary from it

I want to take every word from a text file, and count the word frequency in a dictionary. Example: 'this …

python dictionary count readlines

Count the uppercase letters in a string with Python

I am trying to figure out how I can count the uppercase letters in a string. I have only been …

python string python-3.x count uppercase

How to add radio button dynamically as per the given number of counts?

I have tried this code..It will display three radio buttons in a single row when the emulator starts. But …

android button dynamic count radio-button

python: get number of items from list(sequence) with certain condition

Assuming that I have a list with huge number of items. l = [ 1, 4, 6, 30, 2, ... ] I want to get the number of items …

python list count functional-programming sequence

Unix Command to get the count of lines in a csv file

Hi I am new to UNIX and I have to get the count of lines from incoming csv files. I …

unix count newline line-numbers wc

Count number of non-NaN entries in every column of Dataframe

I have a really big DataFrame and I was wondering if there was short (one or two liner) way to …

python pandas dataframe count nan

counting duplicates in a sorted sequence using command line tools

I have a command (cmd1) that greps through a log file to filter out a set of numbers. The numbers …

bash command-line sorting count duplicates

Parameter Count Mismatch

Having trouble with the following segment of code. I'm getting a parameter count mismatch. I've had to write this because …

c# count parameters mismatch