in Python, given two lists of pairs: listA = [ [1,20], [3,19], [37,11], [21,17] ] listB = [ [1,20], [21,17] ]
I have a large array with 2^20 ulongs on it.This little OpenCL kernel flows through it like a charm. Yet, I have absolutely no idea (and google hasn\'t helped here) how to return a small number of ite
The issue of dropping unused factor levels when subsetting has come up before. Common solutions include using character vectors where possible by declaring
I have a daily zoo (xts) with a few decades of data in the following format: head(almorol) 1973-10-02 1973-10-03 1973-10-04 1973-10-05 1973-10-06 1973-10-07
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari
I\'d like to split a dataframe into several component dataframes based on the values in one column. In my example, I want to split dat into dat.1, dat.2 and dat.3 using the values in column \"cond\".
I am having a data frame like playersgames ------------- rogertennis messifootball agasiten开发者_如何学Pythonnis
i have a data frame that contains a data like this : V1 V2 V3 120.34 130.31 140.12 150.12 the data frame is bigger but that\'s an example.
In the hottest part of my program (90% of time according to gprof), I need to sum one array A into another B. Both arrays are 2^n (n is 18..24) sized and holds an integer (for simplicity, actually the
Subset returned in DAO class: List<Map<String, Object>> agreements = getJdbcTemplate().queryForList(sqlForDataQuery.toString(), paramsForList.toArray());
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