Tag Archives: software
Data processing flowchart and news on an old publication
Short news first; by going through the motions and waiting for Elsevier to get back to me, I have gotten permission (for the royal sum of 0.00 eurodollars) to repost one more paper from Polymer on my site. So that has now gone in the 2010 publications page here. Then it is time to give [...]
Detail-preserving 2D binning, part 1: the appetizer
(Sorry about the hiatus, there’s been a period filled with that noblest of Japanese traditions: paperwork!) If you want to do fitting of a 2D image, you want to preserve the information in the entire image. 2D fitting is quite computationally intensive, so you still want to reduce the number of pixels in your images. [...]
Live Fourier Transform for Windows
Since entering paternity leave, I have had little time to come up with something new to post here. However, one colleague was so kind as to send me his Windows version of the live fourier transform program discussed before. His runs on his Lenovo laptop (but may be more widely applicable) and uses the Windows [...]
Live FT video
A demonstration of the live Fourier Transform showing scattering patterns can be seen here:
Live Fourier transform
During some recent presentations, I have used a small matlab program giving me a live Fourier transform of the laptop camera input. It can be used in combination with some printed “structures” to show what we would see on a SAXS or WAXS detector. The idea is not mine, I heard that it was used [...]
Errors and improvements in the perfectpattern code
Hi all, Just a quick heads-up, there are some minor errors in the perfectpattern code with respect to the convergence criteria. Also I have made some improvements and added a “counting statistics”-like Poisson error to more closely approach real data. These updates have now been posted on the software page.
More details for the monte-carlo code
As promised, some more details which hopefully make the monte-carlo code (discussed here) more useful to you; the software documentation. softwaremanual_mcfit In the documentation are also some examples using the scattering pattern generators discussed before. Let me know if you canor cannot get it to work and post your findings here (or father, on the [...]
Notes on Guinier
…well, his famous SAXS analysis method. This documentGuinier_short, copyright Brian Pauw gives a short description and review of the applicability of the Guinier method to polydisperse systems. It also shows, through analysis of simulated data, what q-range should be measured for the Guinier method to be valid. In short, the rule of qmax=1.3/Rg still holds, [...]
Monte-Carlo Code
Hi all, Herewith a preliminary release of the Monte-Carlo code for fitting SAXS patterns. Documentation will follow, as will a movie and more. MCFit_sph.m Check it out and let me know if you have any questions.
Sorry for the delay
Hi all, Sorry for the big wait. It is not over yet, but I am working on it. More posts hopefully soon although I cannot promise a topic. Might be videos, but maybe also the monte-carlo code. The Monte-Carlo thing is almost ready to go, just some documentation left to write. It has become a [...]