https://github.com/atoptima/dynamicsparsearrays.jl

Dynamic sparse vector and matrix for julia
https://github.com/atoptima/dynamicsparsearrays.jl

julia sparse-matrix

Last synced: about 2 months ago
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Dynamic sparse vector and matrix for julia

• Host: GitHub
• URL: https://github.com/atoptima/dynamicsparsearrays.jl
• Owner: atoptima
• License: other
• Created: 2019-10-09T01:38:41.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2024-01-26T13:28:37.000Z (11 months ago)
• Last Synced: 2024-04-26T16:04:32.201Z (8 months ago)
• Topics: julia, sparse-matrix
• Language: Julia
• Homepage:
• Size: 619 KB
• Stars: 16
• Watchers: 5
• Forks: 1
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# DynamicSparseArrays.jl

[![Documentation](https://img.shields.io/badge/docs-dev-blue.svg)](https://atoptima.github.io/DynamicSparseArrays.jl/dev/)

![Build Status](https://github.com/atoptima/DynamicSparseArrays.jl/workflows/CI/badge.svg?branch=master)

[![codecov](https://codecov.io/gh/atoptima/DynamicSparseArrays.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/atoptima/DynamicSparseArrays.jl)

[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)

[![License: MPL 2.0](https://img.shields.io/badge/License-MPL%202.0-brightgreen.svg)](https://opensource.org/licenses/MPL-2.0)

Brief introduction to the package: [https://atoptima.github.io/Coluna.jl/stable/dynamic_sparse_arrays/](https://atoptima.github.io/Coluna.jl/stable/dynamic_sparse_arrays/)

Install the package :

```

] add DynamicSparseArrays

```

## Example

```julia

using DynamicSparseArrays

I = [1, 10, 3, 5, 3]

V = [1.0, 2.4, 7.1, 1.1, 1.0]

vector = dynamicsparsevec(I,V) # create a vector

vector[3] == 2.4 + 1.0 # true

vector[78] = 1.5 # insert a value (new row)

vector[2] # retrieve a value

vector[2] = 0 # delete a value

I = [1, 2, 3, 2, 6, 7, 1, 6, 8] #rows

J = [1, 1, 1, 2, 2, 2, 3, 3, 3] #columns

V = [2, 3, 4, 2, 4, 5, 3, 5, 7] #value

matrix = dynamicsparse(I,J,V) # create a matrix

matrix[4,1] = 1 # new column

matrix[2,2] = 0 # delete value

deletecolumn!(matrix, 2) # delete column with id 2

matrix[2,6] == 0 # true

```