Recent content by AmenoParallax

I changed the way common blocks are declared everywhere, meaning that keeping the implicit declaration of double precision variables I explicitly declared the types of all variables belonging to any common blocks everywhere in the code. It actually seems to have worked! But still it seems quite...

I have not modified the common blocks everywhere yet... I was trying to apply one change at a time in order to find the problematic part of the code. I'll try to uniform all the common block right away.

Hi I've been struggling with a fortran 77 code that I need for my astrophysics thesis... Since it's quite old, I'm trying to rewrite some features in order to make it more readable, and I'm trying to make it more rigorous by declaring all variables (I'm declaring "implicit none" everywhere)...

@B0b-A Thanks, by 3D graphics isn't what I need, it would be too complex for my purpose...

@jedishrfu Thanks! I'm giving a look to Processing and it really looks like what I needed! By the way, I don't think I will need to perform complicated mathematical computations like differential equations, 'cause I'm going to supply precomputed solutions, but the very possibility to use those...

Hello everybody! I'm looking for some good software or programming language suitable for creating some sort of animations aimed to didactic exposure of scientific topics. What I want to do is an application that allows to interactively follow the evolution of a star's internal structure...

Well thank you chiro, I'll consider that book, but I see that it's about a specific programmation language, which I don't know at all. Actually, all I know about programming is some basics of MatLab, so maybe that's not suitable for me... (although I'm going to check it out). I see now that my...

Hi chiro! My aim is not actually to learn the techniques, but to acquire the generic framework of the subject. My intention was to find any "divulgative-level" book, something between popular science information and academic level. I understand that given the technicality of the subject there...

Hi everyone! I just discovered this new branch of statistics/informatics called "data mining", and I was wondering if anyone could suggest me a nice book about it, maybe some not too technical lecture? Otherwise any academic introductory book? What do you think about this subject? Thanks!

Ok, i got through it, and there is a mistake, indeed. The function in the differential equation is \Phi, the gravitational potential, and not the velocity potential \psi... I found the correct formula... in the following page :biggrin: :biggrin: :biggrin: Life lesson: always read until end of...

Hello everybody! I am using in my studies this beautiful book by Kippenhahn & Weigert, "Stellar Structure and Evolution", but I have some problems about collapsing polytropes (chapter 19.11)... After defining dimensionless lenght-scale z by: r=a(t)z and a velocity potential \psi...