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Package: alfa @ 2.2

Synopsis

Automated line fitting algorithm

Description

This package provides ALFA, which can identify and fit hundreds of lines in emission line spectra in just a few seconds with following features:

  • A population of synthetic spectra is generated using a reference line catalogue.

  • The goodness of fit for each synthetic spectrum is calculated. The best sets of parameters are retained and the rest discarded.

  • A new population of synthetic spectra is obtained by averaging pairs of the best performers.

  • A small fraction of the parameters of the lines in the new generation are randomly altered.

  • The process repeats until a good fit is obtained.

Home page
https://nebulousresearch.org/codes/alfa/
Location
gnu/packages/astronomy.scm (line: 95, column: 2)
License

Derivations

SystemTargetDerivationBuild status
x86_64-linux/gnu/store/m4vs1qapa0p30xiwphz8dmx53qjv574r-alfa-2.2.drv
x86_64-linuxx86_64-w64-mingw32/gnu/store/9j5flg6iz323m80csrgsfijlr6bbzl4z-alfa-2.2.drv
x86_64-linuxriscv64-linux-gnu/gnu/store/x8dp26508zybl7lyf9k8ygk6r5ki0cb8-alfa-2.2.drv
x86_64-linuxpowerpc-linux-gnu/gnu/store/27ymlcgaqm5913i4rdwv54js96kb41a8-alfa-2.2.drv
x86_64-linuxpowerpc64le-linux-gnu/gnu/store/lgjzsy1fc8xssy1qi4pghalyqkzb3k3f-alfa-2.2.drv
x86_64-linuxmips64el-linux-gnu/gnu/store/bwvmqpdv8q2i7rqplvg0f63b44n4yz0h-alfa-2.2.drv
x86_64-linuxi686-w64-mingw32/gnu/store/5582n5p28jp9ziyc94w8rvn97j40kcqm-alfa-2.2.drv
x86_64-linuxi586-pc-gnu/gnu/store/yq9pgjfha1cvabbgm1c38zwaadi5sxbq-alfa-2.2.drv
x86_64-linuxarm-linux-gnueabihf/gnu/store/4n6saw5hwlw83cva3hpiprmyw60gx611-alfa-2.2.drv
x86_64-linuxaarch64-linux-gnu/gnu/store/pb3vd5wr2pi4lxscnrjkfx7kp80jsjv7-alfa-2.2.drv
riscv64-linux/gnu/store/fcfjgv1g705vrrnfpb9ycxwcb5kpsbcl-alfa-2.2.drv
    powerpc-linux/gnu/store/q3xnqd3ky6b9pqv4x3wkk1awj7dxn8vm-alfa-2.2.drv
      powerpc64le-linux/gnu/store/1808biiipz4k4kv5aapqhs6w5xj0zhyv-alfa-2.2.drv
      mips64el-linux/gnu/store/34aify6j6fbd1ld5w732smz3vzisjpr2-alfa-2.2.drv
        i686-linux/gnu/store/flr22zrf34vj5fs7f8g0z02vzvri0vh5-alfa-2.2.drv
        i586-gnu/gnu/store/lg3rj69xq28p25h3jllydknwxpxvm0jz-alfa-2.2.drv
        armhf-linux/gnu/store/8lz9x6fhvj9y8mlvz8hpzls2spwvymrj-alfa-2.2.drv
        aarch64-linux/gnu/store/wrwn2qxgzcadvmlvgnfxazpgs2gqlnla-alfa-2.2.drv

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