peSHIr.GEF 1.0.0

About

What's this?

This library contains some code to read Geotechnical Exchange Format (or *.gef) files used for cone penetration test (or CPT) data.

Who created this?

My name is Jarno Peschier. I started programming on a Commodore 64 in high school, got a masters degree in Computer Science at Utrecht University at the end of the last century, specializing in GIS algorithms, and I have been developing software all my professional life.

You might also know me by my online name of peSHIr, which is basically the way you write my last name phonetically in Klingon.

At the start of 2025 I worked as a software engineer at Dutch engineering firm Iv, where I personally handled all software development around our scan vehicle (YouTube) using multiple third party software packages, C#, and PowerShell.

The laserscan and photo data Iv collects using this vehicle is used in infrastructure projects all over the Netherlands, but also for monitoring things like trees or quay walls in Amsterdam.

How do I use it?

using peSHIr.Progress; // from https://www.nuget.org/packages/peSHIr.Core
using peSHIr.FileFormat.GEF;
//...
IShowProgress gui = new peSHIr.CmdLine.ConsoleProgress();
GefFile data = GefFileReader.Read("file path", gui); // or just pass null for the IShowProgress parameter

Known issues

Apparently .NET Core no longer contains all the code page support .NET Framework contained by default, so you need some extra stuff for this if you need it.

However, it seems I still might do not seem to have windows-1252 encoding support down quite yet in .NET Core, so if you try to read GEF files that contain accented characters in text values these might not quite come out right in this version, I'm afraid?

Download

This library is available as a NuGet package on https://nuget.org. To install it, use the following command-line:

dotnet add package peSHIr.GEF

License and Versioning

This library is licensed under the MIT License - please see the LICENSE file for details - and makes use of Semantic Versioning to try and give meaning to the version numbers, at least for the non-prereleased stuff.

Credits

This library wouldn't have been possible without the following:

• This document from the Deltares public wiki
• xUnit - Community-focused unit testing tool for .NET by Brad Wilson
• FluentAssertions - Support library for using fluent unit test assertions by Dennis Doomen
• Polysharp - Generated, source-only polyfills for C# language features by Sergio Pedri
• peSHIr.Core - Hey, that sounds familiar...? It's by this guy 😉

Show your appreciation for my work

If you like what you see/use you could try one of these links to let me know:

• Buy me a Coffee
• Tip Me

You may also like

• My Link Tree
• My NuGet packages
• My English blog (long dead at the moment..)
• My Dutch blog (long dead at the moment..)