I have a dynamic programming algorithm (modified Needleman-Wunsch) which requires the same basic calculation twice, but the calculation is done in the orthogonal direction the second time. For inst...

I have a mysql table that looks like: id group_id item_code item_label item_detail item_score 1 10 BLU123 Blue 123 Blah blah 123 3 2 10 BLU124 Blue 124 Blah blah 124 6 3 10 BLU125 Blue 125 Blah bl...

I have one table that looks like this called survey_1: ================================================ |id | token | 1X2X1 | 1X2X2 | =====+========+===============+================| | 1 | 1 | YES...

I know about pivot and unpivot. That is not what I want. Pivot and unpivot aggregate data, but that is not what I want. Think of a table as a matrix (linear algebra). If I start with an m x n mat...

I have a table with rows of data and need to create a comma delimited string for all the rows for a column. Can this be achieved just using the the SELECT statement in SQLite or I have to get the d...

I have a list of lists such that the length of each inner list is either 1 or n (assume n > 1). >>> uneven = [[1], [47, 17, 2, 3], [3], [12, 5, 75, 33]] I want to transpose the list, bu...

I have to often transpose a "rectangular" collection-of-collections in Scala, e.g.: a list of maps, a map of lists, a map of maps, a set of lists, a map of sets etc. Since collections can be unifor...

I have a simple query that produces the below results: SELECT month,transporttype,count(transporttype) as loads from deliveries group by month,transporttype I would like to transpose the rows ...

This question is similar to this, but instead of an array that represents a square, I need to transpose a rectangular array. So, given a width: x and a height: y, my array has x*y elements. If wi...

I have this numpy array: a = np.array([[[1,2,3],[-1,-2,-3]],[[4,5,6],[-4,-5,-6]]]) b is a transpose of a. I want b be like this: b = np.array([[[1,-1],[2,-2],[3,-3]],[[4,-4],[5,-5],[6,-6]]]) ...

Hi huys : I want to map a "average" for all values in a map. say I have a list of maps : [{"age" 2 "height" 1 "weight" 10}, {"age" 4 "height" 4 "weight" 20}, {"age" 7 "height" 11 "weight" 40}] ...

i have a 6x6 matrix as a list of lists in python. The matrix is divided into 4 square blocks of size 3x3. I want a way to take a transpose of only 1 block. I can do it using the traditional method ...

how can i transpose an 1d array of leading dimension N, without extra space ? any language is fine

Is there a python builtin that does the same as tupler for a set of lists, or something similar: def tupler(arg1, *args): length = min([len(arg1)]+[len(x) for x in args]) out = [] for i in rang...

For a Lisp class, we were given a simple row transposition cipher homework, which I tried to solve in Haskell, too. Basically, one just splits a string into rows of length n, and then transposes th...

In numpy, what's the most efficient way to compute x.T * x, where x is a large (200,000 x 1000) dense float32 matrix and .T is the transpose operator? For the avoidance of doubt, the result is 100...

I have the following ruby hash: h = { i1: { q1: 1, q2:2 }, i2: { q1: 3, q2: 4} } and I want to transpose it as follows: { q1: { i1: 1, i2: 3 }, q2: { i1: 2, i2: 4 } } Now, I came up with a f...

I am a newbie in C++ Boost uBLAS library so I have a noob question - how to transpose a matrix using this library? I could not find question here: http://www.boost.org/doc/libs/1_44_0/libs/numeric...

I have a table that is similar to the following below: id | cat | one_above | top_level | 0 'printers' 'hardware' 'computers' I want to be able to write a query, without using unions, that wi...