search for: matematically

Dear All, I've tried to sum columns -- different species of flowers, fruits plus twigs -- with NAs to get litterfall/trap, and then after use litterfall to calculate production (litterfall (grams)/ hectare/ day. But R 'sees' litterfall/trap as a string. My question: How to use basic mathematical functions to deal with NAs in data management. Example (as you can note I have many

Hi, I downloaded both gee and geepack, and I am trying to understand the differences between the two libraries. I used the same data and estimated the same model, with a correlation structure autoregressive of order 1. Surprisingly for me, I found very different results. Coefficients are slightly different in value but sometimes opposite in sign. Moreover, the estimate of rho (correlation

Good Day! My name is Anna Sakharova. I live in Russia, Yaroslavl sity. I'm 20 years old. I study Computer Security at Yaroslavl state University named after Demidov(Matematic Department, 4 course). I'm interested in mathematic and coding. I would like to write programs assosiated with my profession. My favorite language is c++ builder. My experience: 1). Program that provide deterministic

...ion some mathematical computation is done and noise is calculate . ( noise[i] = R - offset ) Can anyone explain me what is the funda behind it . <p>2. NOw about overlap and add . I know very well how overlap add solves the aliasing problem afer IMDCT . I have checked it matematically . Now here , when there is overlapping of unequal size window , ie short - long - short . the window shape is modified . I am clear with that ...But I am not getting the original data after IMDCT and overlap add . Can anyone explain me this ..? <p><p> Thanks & re...