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GIS maps

GIS maps

Theres no such thing as GIS maps. GIS is a Geographical Information System (by the way, its not a GIS system). Its also the acronym for Geographical Information Science. You can do a lot by combining GI Systems with GI Science. One function of which is to make maps. But theyre not a special breed. Theyre just maps, much like youd make a map using many other tools.

Making maps (part of cartography) has always been a combination of art, science and technology. Get that magic recipe right and youll make a pretty good map. If any of the three pillars drops short on quality or because of your ability to control them then youll likely end up with a substandard map. GIS, then, is a core technology that supports cartography. It also does a lot more through its multitude of geospatial functionality. Of course, many people make maps using GIS because its a core output. The map communicates results of analysis, illustrates natural and human conditions and tells stories. Theres many different mediums of map that a GIS can support - web, animated, 3D, print, atlas etc. These are the maps. Theyre not GIS maps.

I cant recall a time during my career when I ever called one of my maps a pen map, photo-mechanical map, scribed map, MS Paint map, Coreldraw map, Aldus Freehand map, Adobe Illustrator map, Flash map, Javascript map, Silverlight map, HTML map, GIS map et al.. Maps have always been made using different technologies. They continue to be made by different technologies. Your choice of tools is underpinned by multiple influences but you dont strive to make a GIS map. Hopefully you strive to harness the opportunities of your chosen tools and go beyond the defaults to make a map that cannot be defined by your tool of production. Of course, no map-making software is perfect and we all work within limitations but thats always been the case with any map design and production technology.

Its true that many maps made using GIS have a similar appearance but thats the fault of the person making them because they do not go beyond the defaults. Its why you can often spot a map made using GIS because the defaults can be like a fingerprint. If not modified, line weights, styles, colours and fonts all scream of your chosen map-making software. We therefore end up with what I think people mean when they refer to GIS maps - a data dump that lacks design and has common styling characteristics and a particular visual aesthetic. Id simply call those crap maps rather than blame the software.

Defaults are a necessity in any mouse-driven maps (see what I did there?). They give people a starting point in the software and, over time, they really have improved tremendously. But youre still expected (advised?) to then apply some art and science to make something fit for purpose because, although defaults iterate and improve, its pretty much impossible for a piece of software to know your precise requirements. Sure, sometimes a default is fine but becoming a smarter mapmaker demands that you critically evaluate what the software gave you and adjust if necessary.

All so-called GIS maps are not the same. I see plenty of pretty crap maps made by people using GIS. I also see some absolutely exquisite maps. I might also say the same about maps I see by people who use Illustrator or Javascript yet no-one pigeonholes those maps by their technology de choix. It therefore strikes me as a little unreasonable to paint maps made by GIS as a special case. A map is a map.

So, just a heads up - if you tell me youve made a GIS map Ill immediately think its an ill-designed data dump. If you tell me youve made a stick chart for navigating the oceans then youve just made the exception to the rule because that genuinely is a chart made of sticks (ht to Craig Williams for that!). I guess hand-drawn maps might also be a special case though, of course, pretty much all maps are made by hand, mediated by particular instruments.

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