Linux Format

QGIS OR MGIS? TIME TO LOOK BEYOND EARTH…

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If you were wondering what QGIS stands for, the Q is for Quantum – or at least it was until 2013 but we guess now Q just means Q – and the G stands for Geographic which includes the “geo” suffix that relates to the Earth. As we proved in our experiment­s, though, it might be equally appropriat­e to call it QMIS, since we used it to display Martian data. Indeed, such systems have been used with data representi­ng a wide range of non-terrestria­l astronomic­al objects.

Interested in the wider Solar System? Then you’ll probably want to investigat­e the various planetary base maps and digital elevation models that are freely available. However, you’re going to need to delve into the subjects of CRSs – that’s coordinate reference systems – although it’s a subject you really need to be familiar with whatever your use of QGIS. Needless to say, data representi­ng anywhere other than the Earth won’t use any of the CRSs devised for terrestria­l use. And we have to admit that we struggled with one particular Martian base map which loaded, but wouldn’t display. However, we did do better with elevation data so that might be a good place to start. Search for “Mars_MGS_ MOLA_DEM_mosaic_global_463m” and you’ll find that it can be downloaded from https://astrogeolo­gy.usgs.gov. And if the moon is your thing, you might be interested in https://lunaserv.lroc.asu. edu, which hosts data from the Lunar Reconnaiss­ance Orbiter Camera and provides informatio­n on how to use it in QGIS.

 ??  ?? From Io to Titan, maps and elevation data is available for lots of heavenly bodies and visualised in QGIS.
From Io to Titan, maps and elevation data is available for lots of heavenly bodies and visualised in QGIS.

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