- Choose epsg code grass gis software#
- Choose epsg code grass gis windows#
49Ī command-line interface is a means of interacting with computer programs in which the user issues commands via successive lines of text (command lines).īash in Linux and PowerShell in Windows are its common examples.ĬLIs can be augmented with IDEs such as RStudio for R, which provides code auto-completion and other features to improve the user experience. Many of these are unavailable from the R command line, except via ‘GIS bridges’, the topic of (and motivation for) this chapter. Supports stereoscopic mapping (e.g., LiDAR and structure from motion)Īnother advantage of dedicated GISs is that they provide access to hundreds of ‘geoalgorithms’ (computational recipes to solve geographic problems - see Chapter 11).Enables georeferencing (matching raster images to existing maps) with ground control points and orthorectification.Provides excellent support for ‘digitizing’ (creating new vector datasets), including trace, snap and topological tools 48.Has a ‘shallow’ learning curve meaning geographic data can be explored and visualized without hours of learning a new language.On the other hand, GUI-based GIS systems (particularly QGIS) are also advantageous. Is user-friendly and fast, allowing an efficient workflow.Helps develop future-proof programming skills which are in high demand in many disciplines and industries.
Choose epsg code grass gis software#
Encourages software development by providing tools to modify existing functions and implement new ones. Enables transparency and reproducibility, the backbone of good scientific practice and data science. Facilitates the automation of repetitive tasks. The advantages of a good CLI such as that provided by R (and enhanced by IDEs such as RStudio) are numerous. The ‘CLI vs GUI’ debate can be adversarial but it does not have to be both options can be used interchangeably, depending on the task at hand and the user’s skillset. Many times you can do something on the command line in a fraction of the time you can do it with a GUI. That’s good, but there is a tremendous amount of flexibility and power waiting for you with the command line. With the advent of ‘modern’ GIS software, most people want to point and click their way through life. This means many GIS users miss out on the advantages of the command-line according to Gary Sherman, creator of QGIS ( Sherman 2008): You can interact with QGIS, SAGA, GRASS and gvSIG from system terminals and embedded CLIs, but ‘pointing and clicking’ is the norm. In dedicated GIS packages, by contrast, the emphasis tends to be on the graphical user interface (GUI). This way of interacting with the computer is called a command-line interface (CLI) (see definition in the note below). You type commands and hit Enter (or Ctrl+Enter if writing code in the source editor in RStudio) to execute them interactively. 
A defining feature of R is the way you interact with it:
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