AsciiRaster.Parser 1.0.1

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package AsciiRaster.Parser --version 1.0.1
                    


                    

                
NuGet\Install-Package AsciiRaster.Parser -Version 1.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="AsciiRaster.Parser" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="AsciiRaster.Parser" Version="1.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="AsciiRaster.Parser" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add AsciiRaster.Parser --version 1.0.1
                    


                    

                
#r "nuget: AsciiRaster.Parser, 1.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package AsciiRaster.Parser@1.0.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=AsciiRaster.Parser&version=1.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=AsciiRaster.Parser&version=1.0.1
                    


                            Install as a Cake Tool

Esri.AsciiRaster.Parser

A .NET library for reading and parsing Esri ASCII raster (.asc) files, with optional coordinate transformation using Lambert Conformal Conic projection.

Installation

dotnet add package Esri.AsciiRaster.Parser

Usage

Reading an ASCII raster file

using Esri.AsciiRaster.Parser;

var reader = new FileReader();
EsriAsciiRaster raster = reader.Read("path/to/file.asc");

Console.WriteLine($"Columns: {raster.NCols}, Rows: {raster.NRows}");
Console.WriteLine($"Cell size: {raster.CellSize}");

// Access raster data
double value = raster.Data[col, row];

Reading with coordinate transformation

Use ExtFileReader to transform projected coordinates into geographic (WGS 84) coordinates via a Lambert Conformal Conic projection centered on a given latitude/longitude.

using Esri.AsciiRaster.Parser;

var reader = new ExtFileReader();

// Returns a flat list of CoordinateM (lon, lat, value)
List<CoordinateM> points = reader.Read("path/to/file.asc", lat: 40.0, @long: -74.0);

// Or preserve the grid structure
CoordinateM[,] grid = reader.ReadGrid("path/to/file.asc", lat: 40.0, @long: -74.0);

Esri ASCII raster format

The Esri ASCII raster format is used to transfer information to and from cell-based or raster systems. The file begins with header information that defines properties of the raster, followed by cell value data in space-delimited row-major order.

The spatial location of the raster is specified by the location of the lower left cell, using either its center or its lower left corner:

ncols         480
nrows         450
xllcorner     378923
yllcorner     4072345
cellsize      30
nodata_value  -32768
43 2 45 7 3 56 2 5 23 65 34 6 32 54 57 34 2 2 54 6
35 45 65 34 2 6 78 4 2 6 89 3 2 7 45 23 5 8 4 1 62 ...

Header keywords

Parameter Description Requirements
NCOLS Number of cell columns Integer greater than 0
NROWS Number of cell rows Integer greater than 0
XLLCENTER or XLLCORNER X-coordinate of the origin (by center or lower left corner of the cell) Must match y-coordinate type
YLLCENTER or YLLCORNER Y-coordinate of the origin (by center or lower left corner of the cell) Must match x-coordinate type
CELLSIZE Cell size Greater than 0
NODATA_VALUE The input values to be NoData in the output raster Optional. Default is -9999

Data format

  • Cell values are delimited by spaces.
  • Carriage returns at the end of each row are not required. The number of columns in the header determines when a new row begins.
  • Row 1 of the data is at the top of the raster, row 2 is just under row 1, and so on.

License

This project is licensed under the MIT License.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on AsciiRaster.Parser:

Package Downloads
Contour.Core.ContourGenerator.MarchingSquares

Contour line and polygon generation from raster grids using the Marching Squares algorithm. Subdivides raster cells into sub-triangles via bilinear interpolation and traces contours through the resulting mesh. Built on NetTopologySuite.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.0.1 395 3/25/2026