Commit b4cc71be by Jean-Eric Campagne

### (JEC) 24/11/15 add more detils on Fourier-Bessel part

parent e635b467
 ... ... @@ -3,7 +3,7 @@ LagSHT {#mainpage} Introduction ------------ **LagSHT** is an acronym for *Laguerre Spherical Harmonic Transform*. It is also the **namespace** use throughout the C++ code to isolate the classes and the fucntions. **LagSHT** is an acronym for *Laguerre Spherical Harmonic Transform*, although it includes since the version v1.7 a *Bessel Spherical Harmonic Transform* deduced from the *Laguerre Transform*. **LagSHT** is also the **namespace** use throughout the C++ code to isolate the classes and the fucntions as well as the root for the header files to be included in user applications. The original work by **Boris Leistedt** and **Jason D. McEwen** ([see the ArXiv paper](http://arxiv.org/pdf/1205.0792v2.pdf)) as well as their [FLAG software](http://www.jasonmcewen.org/codes/flag/) have been the starting point of the present library development although we differ from the FLAG 1.0b1 version by some aspects those the most important are: ... ... @@ -34,7 +34,7 @@ \begin{eqnarray} with $L_n^{(\alpha)}(r)$ the generalized Laguerre polynomials (notice that by default $\alpha = 2$). The $\tau$-scaling parameter is a free parameter but can be nicely set to $\tau = R_{max}/r_{N-1}$ with $R_{max}$ the limit in radial direction of the function $f(r,\Omega)$, and $r_{N-1}$ the largest node of the Gauss-Laguerre quadrature (see below). For bnad-limited functions the discret sums are truncated with \$ l
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