Is it possible to vectorise code like the following? length(x) <- 100; x[1]<- 1; y<- rnorm(100);
I want to write api like ahttp://vectormagic.com and I want to know what kind of technologies you will advise me(I know php,html,js,..,c++) to use?
Loop vectorization is when all right-hand-side expres开发者_如何学Csions are computed at the onset. I just discovered my loops are being vectorized (in FORTRAN 77... don\'t ask). I need my loop condit
T(i) = Tm(i) + (T(i-1)-Tm(i))**(-tau(i)) Tm and tau are NumPy vectors of the same length that have开发者_如何学C been previously calculated, and the desire is to create a new vector T. The i is incl
I am trying to 开发者_StackOverflowmultiply two vectors together where each element of one vector is multiplied by the element in the same index at the other vector.I then want to sum all the elements
I would appreciate insight into why this happens and how I might do this more eloquently. When I use sapply, I would like it to return a 3x2 matrix, but it returns a 2x3 matrix. Why is this? And why
It must be simple, but surprisingly I couldn\'t find an answer to this problem here or by trial-and-error.
This is a question about incrementing one value of a MATLAB array multiple times in the same statement, without having to use a for loop.
I am rewriting a Monte Carlo simulation model in MATLAB with an emphasis on readability. The model involves many particles, represented as (x,y,z), following a random walk over a small set of states w
I\'ve a data frame with time events on each row. In one row I\'ve have the events types of sender (typeid=1) and on the other the events of the receiver (typeid=2). I want to calculate the delay betwe
加载中,请稍侯......