ArchGDAL.jl documentation

GDAL is a translator library for raster and vector geospatial data formats that is released under an X/MIT license by the Open Source Geospatial Foundation. As a library, it presents an abstract data model to drivers for various raster and vector formats.

ArchGDAL.jl aims to be a complete solution for working with GDAL in Julia, similar in scope to the SWIG bindings for Python. It builds on top of GDAL.jl, and provides a high level API for GDAL, espousing the following principles.

Principles (The Arch Way)

(adapted from https://wiki.archlinux.org/index.php/Arch_Linux#Principles)

• simplicity: without unnecessary additions or modifications. It preserves the GDAL Data Model and requires minimal dependencies.
• modernity: ArchGDAL strives to maintain the latest stable release versions of GDAL as long as systemic package breakage can be reasonably avoided.
• pragmatism: The principles here are only useful guidelines. Ultimately, design decisions are made on a case-by-case basis through developer consensus. Evidence-based technical analysis and debate are what matter, not politics or popular opinion.
• user-centrality: Whereas other libraries attempt to be more user-friendly, ArchGDAL shall be user-centric. It is intended to fill the needs of those contributing to it, rather than trying to appeal to as many users as possible.
• versatility: ArchGDAL will strive to remain small in its assumptions about the range of user-needs, and to make it easy for users to build their own extensions/conveniences.

Installation

To install this package, run the following command in the Pkg REPL-mode,

pkg> add ArchGDAL

To test if it is installed correctly,

pkg> test ArchGDAL

To load the package,

julia> using ArchGDAL

In the documentation AG is often used as a shorthand for ArchGDAL. To use this shorthand you can use:

import ArchGDAL as AG

Contents

• Design Considerations
• Code Defensiveness
• GDAL Enum Values
• Colors
• Images
• Tables.jl Interface
• Missing and Null Semantics in GDAL
• Data Model
• GDAL Datasets
• Vector Datasets
• Raster Datasets
• Working with Files
• Feature Data
• Feature Layers
• Individual Features
• Geometric Operations
• Geometry Creation
• Geometry Modification
• Unary Operations
• Binary Operations
• Images
• Reading from Datasets
• Reading from Files
• Reading from Rasterbands
• Working with Colors
• ArchGDAL.jl documentation
• Principles (The Arch Way)
• Installation
• Contents
• Interactive versus Scoped Objects
• Memory Management (Advanced)
• References
• Spatial Projections
• Coordinate Systems
• Creating Spatial References
• Reprojecting a Geometry
• Reprojecting from a layer
• References
• ArchGDAL quickstart
• Opening the dataset
• Dataset Attributes
• Dataset Georeferencing
• Reading Raster data
• Writing into Dataset
• Raster Data
• Raster Bands
• Raster I/O
• Windowed Reads and Writes
• Using the DiskArray interface
• Raster bands as 2D DiskArrays
• The RasterDataset type
• API Reference
• General
• GDAL Constants
• GDAL Datasets
• Feature Data
• Tables Interface
• Raster Data
• Spatial Projections
• Geo Transformations
• Utilities
• Format Drivers
• GeoInterface
• Tabular Interface