scarlet | hyperspectral galaxy modeling and deblending
kandi X-RAY | scarlet Summary
kandi X-RAY | scarlet Summary
This package performs source separation (aka "deblending") on multi-band images. It's geared towards optical astronomy, where scenes are composed of stars and galaxies, but it is straightforward to apply it to other imaging data. Separation is achieved through a constrained matrix factorization, which models each source with a Spectral Energy Distribution (SED) and a non-parametric morphology, or multiple such components per source. In astronomy jargon, the code performs forced photometry (with PSF matching if needed) using an optimal weight function given by the signal-to-noise weighted morphology across bands. The approach works well if the sources in the scene have different colors and can be further strengthened by imposing various additional constraints/priors on each source. The minimization itself uses the proximal gradient method (PGM). In short, we iteratively compute gradients of the likelihood (or of the posterior if priors are included), perform a downhill step, and project the outcome on a sub-manifold that satisfies one or multiple non-differentiable constraints for any of the sources. This package provides a stand-alone implementation that contains the core components of the source separation algorithm. However, the development of this package is part of the LSST Science Pipeline; the meas_deblender package contains a wrapper to implement the algorithms here for the LSST stack. The API is reasonably stable, but feel free to contact the authors fred3m and pmelchior for guidance. For bug reports and feature request, open an issue.
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Top functions reviewed by kandi - BETA
- Plot a scene
- Convert an input image to RGB
- Convert an image to RGB
- Convert channels to rgb
- Generate pixel sizes from observations
- Create a box from a list of bounds
- Convert pixel coordinates to pixel coordinates
- Get peaks from a specified image
- Split the bounding box
- Plot sources
- Add markers to an axes
- Fit the model on a given number of components
- Compute the symmetrized symmetrized op
- Interpolate an observation
- Parameterize sources
- Split the tree
- Compare the spectra
- Computes the diff kernel for the model
- R Return the minimum radius of a PSF
- Compute the PSF spectrum for a given sky coordinate
- Update the parameters
- Sets the spectra to match sources
- Calculate the spectrum for a given sky coordinate
- Project a morphology to a given bounding box
- Plot an observation
- Calculate the uncentered symmetry operator
- Resolve the model with the given parameters
scarlet Key Features
scarlet Examples and Code Snippets
Community Discussions
Trending Discussions on scarlet
QUESTION
I'm new to bash and writing a shell script to add some metadata to music files and there are some spaces in filename
...ANSWER
Answered 2022-Apr-11 at 05:49Use bash arrays.
QUESTION
I am wanting to create a bar chart of top 5 populated states. My current function does not work for three reasons. 1) The most populated states are California,Texas,Florida,New York, and Pennsylvania. 2) The largest state the graph shows, california is the last one on the graph when it should be the first. 3) the y axis values are completely wrong. Not even numbering in the millions like the population does. Hope the question was clear. Thanks so much!
...ANSWER
Answered 2022-Feb-02 at 19:33The reason that your code doesn't work is that
QUESTION
There is k8s pod yaml file that has 3 containers, here is the part of the yaml file:
...ANSWER
Answered 2022-Jan-04 at 15:14You can use grep for counting the occurrences of a key that every container is bound to have once and that cannot be mistaken with an other key; for example Container ID::
QUESTION
I want to have a Chat-like simple UI where the chats can scroll & 2 buttons are at the end.
Currently, it looks like:
Full reproduction → https://play.tailwindcss.com/mKgRCKKVBq
The code looks like:
...ANSWER
Answered 2021-Dec-13 at 14:55I had to change only 1-thing. The outer container should be using h-screen instead of min-h-full like:
QUESTION
Can someone help me print out a string instead of a char via string interpolation when your strings are indexed in an array? As seen the printed in the if statement - {text[3]} etc.
...ANSWER
Answered 2021-Dec-14 at 01:25using System;
using System.Linq;
public class Program
{
public static void Main()
{
//options/configuration values which may work better as parameters
string source = "The first world war occurred in the early 20th century, many countries around the world were originally agnostic to the early battles. An obvious reason why is because there are many countries in the world that do not have relations to nation states that were fighting in the early battles.";
string template = "Roses {0} red, scarlets {1} blue, this poem doesn't have {2} ending, so embrace the unknown because it is {3}.";
//When true both "around" and "An" will match "a". When false only "around" will
bool ignoreCase = true;
int numberOfBlanks = 4;
//word to use in blanks if not enough matching words are found. use an empty string "" if you don't want anything filled
string defaultWord = "banana";
string matchingLetter = "a";
string[] madgabWords = new string[numberOfBlanks];
Array.Fill(madgabWords, defaultWord);
string[] textSplit = source.Split(" ")
.Where(x=> x.StartsWith(matchingLetter, ignoreCase, null))
.ToArray();
for(int i = 0; i < textSplit.Length && i < numberOfBlanks; i++)
{
madgabWords[i] = textSplit[i];
}
Console.WriteLine(template, madgabWords);
//if you are building a string to return or assign to a variable instead of printing directly to console then use:
var madgab = string.Format(template, madgabWords);
}
}
QUESTION
I have the following dataframe:
The different Red colors (row 1-3) are grouped together in group "Dark Red". They are part of the "Red" group (7-8) and the "Dark" group (14-16). The "Red" group (7-8) references an additional group: "Color" (11-13).
The goal is to get a list of all referenced group for each "Value".
Example:
Input: "Scarlet Red"
Expected Output: ['Scarlet Red', 'Dark Red', 'Red', 'Dark', 'Color']
Sample data:
...ANSWER
Answered 2021-Sep-03 at 13:46I solved it with the networx library:
Sample data:
QUESTION
I have a student table with Id's and names and a Friends table with Id's and Friend Id's. I want to join these two tables and find Student's Friend.
For example, Ashley's friend is Samantha, Samantha's friend is Julia, ...
...ANSWER
Answered 2021-Aug-06 at 03:17Something like this. Use two LEFT JOIN.
QUESTION
I have this array of objects. Each contain a color and a "weight" value. The weight value for each color will always be dynamic because it depends what image was analysed. I want to sort this array so that the objects with the highest weight value are at the start of the array, and the objects with the lowest weight values are at the end of the array. So that all I have to do to list the top 3 colors is index the first three objects in the array. They need to be objects so I can also log the name of the color with it's corresponding weight value.
...ANSWER
Answered 2021-Jul-31 at 01:39QUESTION
Table DATA:
...ANSWER
Answered 2021-Jul-20 at 15:31The string_split function should work.
QUESTION
I know similar questions have been asked but not the same process and code. I have an array of images and i need to loop through them and apply fade in for the displaying image and fade out for the removing image. I have been able to achieve the looping and displaying of images my only problem is the fade in and fade out process.
Here's my code snippet:
...ANSWER
Answered 2021-Jun-08 at 19:26Can you try and see if the following works for you,
Where setTimeout is equal to your css transition transition: opacity .5s;.
JS:
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Install scarlet
You can use scarlet like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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