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Most of us carry maps around in our pockets every day in the form of apps on our phones.
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Maps are incredibly popular.
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But, why is that exactly?
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Well, maps help us answer some very important questions like where am I?
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Where is that thing I'm looking for?
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Where's that location?
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How do I get there? If we look at a typical mapping app on a phone,
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like Google maps, you'll see that it answers these questions in a simple intuitive way.
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So, if we just look at it.
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The little blue dot is the where am I,
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the search bar is the way that we find out where is that place.
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So, we type in whatever we're looking for,
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and it shows us where that is,
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and then the navigation tools allow us to figure out how do I get there.
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So , three very important questions,
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they may seem obvious,
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but when you look at the design of an app like this,
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it's a great way of kind of thinking about
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the questions that we typically want to answer in the form of a map.
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Where am I? Where is that place? How do I get there?
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Google maps is very popular and works really well,
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but it does have its limitations.
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What if I want to customize the map?
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Well, sure, Google has some basic options like traffic and satellite images,
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what we can think of as map themes or layers,
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but what if I want to add other map themes such as neighborhoods,
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or voting districts, or pollution levels.
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Well, what if I want to add my own places that is
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collect data such as the locations of trees,
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say on a university campus.
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What if I want to not just map the locations of those trees,
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but store information about them such as their species,
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the age, and the height.
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Google maps has a very nice design,
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but it's meant to be multipurpose.
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So, it's not always the best map for every situation.
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Esri, which is one of the largest mapping software companies in the world,
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has its own specialized app called explorer.
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A first glance, it seems similar to Google maps,
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but it can do a whole lot more.
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This is the default map which may not be as colorful as Google's,
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but that's actually intentional as it's designed to be less noticeable.
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This way, you can draw other things on top of it
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which will be easier to see as the subject of the map.
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You also have more choices for the base map which is what we call the background map.
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Most of the map creation happens through a web browser,
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or software on a computer,
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but Esri has created apps that are designed to then,
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use the maps you created in a browser,
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or through an app on your phone or tablet.
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That's when it gets really interesting.
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So you may be thinking, why limit our discussion to maps on a phone?
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Well, I started with that because it's probably
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the most familiar mapping apps are among the most popular apps in the world,
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and people use them probably millions or billions of times a day.
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But we can also look at maps through a web browser,
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and so let's turn our discussion to that now.
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If we stick with Google Maps for a minute,
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because it's arguably the most popular,
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we have a larger version of the same thing we saw on the mobile app.
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We can select different themes, like satellite imagery,
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or traffic conditions, or transit routes,
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and that's all great, and it's amazing what we can do with Google Maps.
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But what if we want to use our own data,
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and make our own maps,
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and customize them in our own way for our own purposes?
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Well, Google Maps is not the best for that necessarily.
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Just to be clear, I'm not really criticizing Google Maps,
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it's an amazing service that's provided basically free of charge,
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it does an enormous amount of things really really well,
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but it doesn't really do everything that we may want to do
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in order to customize things for our own purposes.
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There are ways to make customized maps on anything that you're interested in.
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It could be trees in a park,
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it could be the effects of climate change,
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it could be something to do with crime statistics,
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anything that you might be interested in that can be put in a map, we can work with.
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So, really what we're starting with are the basic questions of, where is it?
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So, where is something? What's the location of it?
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We'll talk about how you describe that location,
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and then also, what is it?
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So, what is that location?
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What are the characteristics of that thing that we found the location of,
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so, let's say it's a tree.
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The where is it might be coordinates in longitude and latitude,
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the what is it might be the attributes of that trees such as the height,
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the age, species, the condition that it's in, and so on.
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Once we've mastered those questions,
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we can start asking other questions such as, why is it there?
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Why is that tree there? Did somebody plant it?
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Did it grow on its own from a seed that blew in the wind?
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Those kinds of questions are things that we can start to to examine in more detail.
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Then, we can look at, why do we care?
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What are the effects of that thing?
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So, do we want that tree to be there?
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Is that a good thing that, that tree is there?
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Is it a tree that's a nuisance?
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These all kinds of things, hey, I love trees,
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but the whole thing is about you know,
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why is that thing there?
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So, where is it? What is it?
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Why is it there? Then, what effect does it have?
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It'll means sort of why do we care in a in a kind of a flippant way?
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It's more to say that there may be a reason why it's there,
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and how does it affect what we're interested in looking at,
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and what we're studying in terms of things that are going on in the world?
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So, is it a good thing, is it a bad thing,
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does it help us, is it of interest to us,
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that's what we're really getting at.
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So, these questions form a definition of
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geography that was put forth by Charles Gritzner,
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who was a professor at the South Dakota State University.
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I've always liked this definition.
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It's a widely used definition.
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It's easy to remember,
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but it actually has more meaning to it than might be obvious to begin with.9794
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