Comments (9)
@msyriac thanks for opening this one.
This is at the top of my list once the NaMaster paper is out.
I think the main roadblock would be to understand how libsharp uses other pixelization schemes. The rest should be relatively simple to rewrite, since only a few very specific functions make use of built-in healpix subroutines (e.g. the mask apodizers).
In the meantime you have the flat-sky version...
from namaster.
I'd like to work on this issue, for the purpose of working with ACT maps! I've talked a little to @msyriac about this already.
from namaster.
OK, great! It'd be great if you guys can have a chat with either Sigurd or Steve Choi at some point. I know there are some subtleties regarding how CAR is interpreted by libsharp, but once those are clarified, it should be easy.
I'd like to be involved in this, although I'll be crazy busy for at least the next week. I can answer any questions you have though.
All the pixel manipulation, currently done in healpix, is taken care of at the C level by healpix_extra.c.
from namaster.
The rectpix_both
branch now has CAR support for both spin 0 and 2. Three main things still need doing,
- I have to add
nmt_workspace_CAR
read/write functions. - Neither mask apodization nor templates/deprojection are tested.
- Unit tests! Documentation!
from namaster.
Nice! Is your implementation really specific to CAR, or is it perhaps more general to cylindrical projections or rectangular pixels?
from namaster.
It would be easy to use any ring weight scheme that libsharp already supports. This is actually more limited than general CAR -- libsharp supports equidistant cylindrical projection grids (ECP), i.e. the colatitude rings must be evenly spaced and divide the sphere with no remainder, see libsharp paper.
from namaster.
This is amazing @xzackli ! I'll try to work on this a bit over the break.
Quick question: can we get rid of the rectpix
branch then? Or is there anything there that isn't in rectpix_both
?
from namaster.
You're right, I've deleted rectpix
since it doesn't have anything useful anymore!
from namaster.
Solved by PR #39
from namaster.
Related Issues (20)
- Large array size with synfast_flat HOT 2
- nan's with map read from fits file HOT 2
- random seed in synfast_flat
- I am not seeing a real improvement in performance, but it might be my own compiler being a bit outdated. Still worth merging, since libsharp2 is the one being maintained, but will open an issue to investigate further.
- configure fails to find cfitsio HOT 7
- Missing version number in pymaster
- Help installing NaMaster on M2 macOS HOT 17
- cannot find _nmtbin module HOT 4
- Error when setting lmax < 3 * nside - 1 in compute_full_master HOT 2
- Missing different lmax for mask and coupling coefficients for covariances HOT 1
- f_ell does not seem to do anything in NmtBin HOT 1
- Conda installation fails if conda installs gsl=2.7.1 instead of gsl=2.7
- Inconsistency in results between MacOS and Ubuntu HOT 13
- Make exception message more informative
- Weird power in compute_coupled_cell HOT 3
- pymaster installation problem HOT 3
- Pseudo-cl's in the covariance computation - pixel window function HOT 3
- Floating point errors with full sky CAR pixellization HOT 1
- NaMaster installation CFITSIO issue
- Apodisation window functions HOT 3
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from namaster.