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Audio Transcript Auto-generated
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a welcome to a short video on maps and what
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kind of information they can provide us.
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So, as I'm sure, you're all aware, very common roadmap
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showing us the roads, a main road, small roads, etcetera
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concede some of the water patterns in the landscape in
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a tiny bit of information on vegetation, mainly the green
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bits indicating large of vegetation, areas like forests.
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Um, you can also get ordinance survey maps.
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They're very useful.
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They can give you an indication of what the slope
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is like.
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So some of you might already know this, but I
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am the closer.
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The lines in the ordinance survey that indicates the steeper
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the slope, the wider, the more space the lines, the
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less slope there is.
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Another way of looking at it is that each of
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those lines indicates a slice, a slice that's exactly horrid
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on horizontal to the sea level.
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So each each contour line is that horizontal height from
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the sea level.
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OK, something else that we can use a lot is
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satellite images, so sometimes they're taken from airplanes.
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Sometimes they're taken satellites that they can give us a
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lot of detail about the vegetation, the landscape I'm quite
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hard to read.
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Sometimes Slope Onda, the three D element, the shade cast
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by a satellite image couldn't be a real good indication
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to you can quite often guess when the photo was
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taken. Various different sources of satellite images.
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Google Maps is a really good one.
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It's always got a scale by which I find useful.
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Microsoft have got being the rial advantage of being.
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Sometimes the images aren't is clear, but you can jump
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into an ordinance survey mode and therefore being able to
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read, read the landscape and read the slope very easily
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with being and another one or two examples available.
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Okay, um, so using these maps, we can use them
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to make a base map and then from the basement,
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we can add lots of other elements of information.
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Weaken using quite often tracing paper.
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You can add what we've already discussed zones.
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You can add your sector analysis so you could be
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showing them a separate tracing paper showing where the prevailing
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winds are.
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A separate tracing paper could be showing you shade, et
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cetera, et cetera.
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Uh, and here's a bit of a mind map going
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into that, so stop being really about their the base
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map and then the bottom one really getting into into
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the the rial kind of depth of information that you
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can put on to, um, your maps using the different
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layers you can, of course, also do this with Is
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software, whether it's gimp photo shop, any of the software
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programs offered the option of working in different layers.
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Um, stale.
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So just very briefly, as I'm sure, love.
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You know, a scale of 1 to 1000 means one
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equals 1000 one on the map equals 1000 in realities
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of one millimeter on your map equals of 1000 millimeters
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meters. In reality on 1000 millimeters is one meter.
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That's the 1 to 1000 um 1 to 50 equates
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to 20 meter 20 millimeters equaling one meter.
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That makes sense.
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And some of the most common scales to use ah
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one to a fifties already use Fels scale.
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For maybe working on a smaller garden.
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1 to 100 is probably the easiest to work with,
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one that I use most of the time when working
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on a sort of garden scale, um, the average garden
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might fit onto in a three or an eight to,
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um, 1 to 200 maybe for a slightly bigger size
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and plot that you're drawing.
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Working with uh, and then 1 to 501 to 1000
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is when you're starting to work a sort of park
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or city scale.
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So maybe not used as much.
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And to convert these scales you can do all your
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mathematics or something that's really useful is having a ruler
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that has got the different scales on it.
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It saves you a lot of time by having that
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available toe toe work at different scales.
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Okay and last but not least, trying to read the
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depth of them the three d genus of a map.
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So quite often it's worth doing a section cut through
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the landscape and then looking at the elevation.
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So it's an elevation drawing where you can really sort
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of look at the effects of the shade.
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Um, of course, the shade is a lot bigger on
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the north side of a smoke than on the south
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side of a slope.
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Um, it's just a really useful tool for being ableto
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read more in detail.
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And if you want to get even more precise in
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either enabling your client to understand your limit.
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Your drawings is to go into a three D image,
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um three d image, whether it's drawn by hand or
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in this case drawing using sketch up, which is a
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fantastic, um, open source, semi open source.
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Bit of them, that software.
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It really enables people to understand sometimes a drawing better
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than they ever can do in two D so worth
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looking into Okay, I think that's everything.
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Any questions, let me know.