https://github.com/hectorpulido/simple_linear_algebra
Simple list of functions of matrices
https://github.com/hectorpulido/simple_linear_algebra
linear-algebra vectors
Last synced: 2 days ago
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Simple list of functions of matrices
- Host: GitHub
- URL: https://github.com/hectorpulido/simple_linear_algebra
- Owner: HectorPulido
- License: mit
- Created: 2018-01-07T23:46:48.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2018-01-21T22:23:07.000Z (over 7 years ago)
- Last Synced: 2025-10-10T23:44:24.871Z (2 days ago)
- Topics: linear-algebra, vectors
- Language: C#
- Size: 147 KB
- Stars: 5
- Watchers: 1
- Forks: 2
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Simple linear algebra for C#
This is simple linear algebra for C# easy to understand
## Functions
All usable functions
```csharp
double[,] a1 = { { 10, 20, 30 }, { 1, 3, 4 } };
Matrix a = new Matrix(a1);
Console.WriteLine("Matrix a");
Console.WriteLine(a.ToString());
Matrix b = Matrix.Identy(2);
Console.WriteLine("Matrix identy b");
Console.WriteLine(b.ToString());
Matrix c = a.T;
Console.WriteLine("Matrix a transposed c");
Console.WriteLine(c.ToString());
Matrix d = a + 1;
Console.WriteLine("Matrix a + 1, d");
Console.WriteLine(d.ToString());
Matrix e = a - 1;
Console.WriteLine("Matrix a - 1, e");
Console.WriteLine(e.ToString());
Matrix f = a * 10;
Console.WriteLine("Matrix a * 10, f");
Console.WriteLine(f.ToString());
Matrix g = Matrix.Random(2, 3, new Random(123));
Console.WriteLine("Matrix g, random matrix");
Console.WriteLine(g.ToString());
Matrix h = a + g;
Console.WriteLine("Matrix h, a + g");
Console.WriteLine(h.ToString());
Matrix i = a * g.T;
Console.WriteLine("Matrix h, a * g' ");
Console.WriteLine(i.ToString());
Matrix j = a.GetColumn(0);
Console.WriteLine("Matrix j, first column of a");
Console.WriteLine(j.ToString());
Matrix k = a.GetRow(0);
Console.WriteLine("Matrix k, first row of a");
Console.WriteLine(k.ToString());
Matrix l = a.AddColumn(Matrix.Ones(2, 1));
Console.WriteLine("Matrix l, a with a added column of ones");
Console.WriteLine(l.ToString());
Matrix m = a.AddRow(Matrix.Zeros(1, 3));
Console.WriteLine("Matrix m, a with a added row of zeros");
Console.WriteLine(m.ToString());
```
## Helper
Right now there are some additional useful functions on Helper.cs
```csharp
if (Helper.SaveMatrix(a1, "a1.dat"))
Console.WriteLine("a1, saved");
Matrix _a1;
if(Helper.LoadMatrix(out _a1, "a1.dat"))
Console.WriteLine("a1, loaded \n " + _a1.ToString());
Console.WriteLine("Images can be loaded, and the size can be changed");
Matrix[] img = ImageHelper.LoadImage("Image.bmp", 15, 15);
Console.WriteLine(img[0]); //BW
Console.WriteLine(img[1]); //R
Console.WriteLine(img[2]); //G
Console.WriteLine(img[3]); //B
Console.WriteLine("Images can be Saved");
ImageHelper.SaveImage(img[0], "BWImg.bmp"); // Saved on BW
ImageHelper.SaveImage(img[1], img[2], img[3], "ColorImg.bmp"); //Saved on Color
if (Helper.SaveCsv(Helper.MatrixToCsv(h), "a.csv"))
Console.WriteLine("Matrix saved on csv file");
string[][] data;
if (Helper.ReadCsv(out data, "CsvFile.csv"))
{
Console.WriteLine("Data readed from csv file");
Helper.MapCsv(ref data, new Dictionary { { "Ford" , "0" },
{ "Chevy", "1" },
{ "Jeep" , "2" }});
Console.WriteLine(Helper.CsvToMatrix(data));
}
```
## What can I do with this
You can use this as you want, as matrix calculator or something more complex, like machine learnign
1. Multilayer perceptron (Neural network) https://github.com/HectorPulido/Vectorized-multilayer-neural-network
2. Monolayer perceptron (Neural network) https://github.com/HectorPulido/Simple-vectorized-mono-layer-perceptron
3. Convolutional neural network https://github.com/HectorPulido/Convolutional-Neural-Network-From-Scratch
## How use it
Just go to your project (on visual studio) and import the script LinearAlgebra.cs
To use Helper is the same process but, to use the ImageHelper you need to import System.Drawing.Dll from
- Project -> Framework -> System.Drawing
## Future
There are a lot of features I want to add, like a Console, but I want to focus on the Linear Algebra, to make it more complex and deep
## Patreon
Please consider Support on Patreon
https://www.patreon.com/HectorPulido