The document provides information on how to read and interpret topographical maps. It discusses key elements of maps including symbols, scale, contour lines, and compass use. Maps are representations of land or sea that use symbols to denote physical and human features. Contour lines connect points of equal elevation, with closer lines indicating steeper slopes. A compass is used to find cardinal and intercardinal directions as well as compass bearings between points. Scale relates distances on a map to actual ground distances.
This work is an effort to share Geographical Information System:
This presentation will present you both ways to geo reference image:
1. Raw image by X,Y coordinates
2. Image to Image referencing
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This work is an effort to share Geographical Information System:
This presentation will present you both ways to geo reference image:
1. Raw image by X,Y coordinates
2. Image to Image referencing
Location. Location. Location. With so many maps and datums out there, how does a person know what datum is correct? How come my GPS coordinates don\'t match up on my map? Why is there a shift of 100 metres? How do I transform between different datums? What is a datum? What is the EPSG? Why have GIS Vendors and Oracle adopted them? Does offshore or onshore make a difference? How come there are so many datums? This presentation looks to provide some answers to some of these questions and to point out that latitude and longitude are not absolute.
Over the decades that surveyors have been trying to map the Earth, history and politics have shaped the way we see the world. Are the borders actually there? What if one nation adopts a standard, but the other does not? Does really matter what the co-ordinate system is? Why when I draw the a UTM Projection, the lines are curved, not in a grid? Is the OGC adopting these standards? So many questions and this presentation aims to answer some of them and provide some light on a complicated and sometimes unclear topic.
To understand geography, it is a prerequisite to know its creators, their philosophy, aim and methods. These are really interesting and enrich our vision.
To understand geography, it is a prerequisite to know its creators, their philosophy, aim and methods. These are really interesting and enrich our vision.
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2. Understand the basic principles of surveying and geomatics engineering
3. Apply the different methods of surveying and geomatics to measure the features of interest
4. Analyze the traditional and advanced methods of surveying
5. Evaluate the different techniques of surveying and geomatics in solving real world problems.
6. Design and construct solutions for real world problems related to surveying and geomatics.
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Combined gis 2(GEOGRAPHIC INFORMATION SYSTEM)musadoto
Distortions
• The earth is spherical, and a simple way of mapping it without distortion is to map it on a globe. However, mapping on globes is not possible.
• The transformation from the three-dimensional ellipsoid/sphere to the two-dimensional plane (flat) surface is not possible without some form of distortion.
• The distortions increase as the distance from the central point of the projection increases
• Areas smaller than 25 x 25 km:
No distortions
• Areas larger than 25 x 25 km:
Always distortions
• Map projections are used to control/minimize the distortions
Classification and properties of map projections
Properties of map projections
• Areas are everywhere correctly represented
• All distances are correctly represented
• All directions on the map are the same as on Earth
• All angles are correctly represented
• The shape of any area is correctly represented (e.g. a circle projected would remain a circle)
1) In what ways is tourism changing?
2) What influences tourism trends? Reasons for the growth of tourism (3Ds)
3) Why is tourism subject to regional fluctuations? (RUDO)
1) Trends in food production
2) Factors affecting intensity of food production
3) Effects of intensification of food production
4) Why food shortages still occur
Types of tourism:
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2) Places with Good Facilities
3) Places with Rich Culture
4) Places of Conflict
Different groups promoting tourism:
1) Government
2) Media
3) International organisations
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The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
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Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2. 1) Map
• A
representation of an area
of
land
or
sea
in
the
form
of
a
diagram.
• We
often
refer
to
maps
when
we
travel
or
when
we
are
finding
our
way
to
places.
3. 1) Map
• It
can
show
boundaries between countries,
physical
features,
elevation,
cities,
roads,
climates,
economic
activities
etc.
4. 1) Map
• It
can
show
boundaries
between
countries,
physical features,
elevation,
cities,
roads,
climates,
economic
activities
etc.
5. 1) Map
• It
can
show
boundaries
between
countries,
physical
features,
elevation,
cities,
roads,
climates,
economic
activities
etc.
6. 1) Map
Is
a
globe
a
map?
• Yes!
Globes
are
some
of
the
most
accurate
maps
that
exist.
11. 2) Map Symbols
• The
legend:
contains
symbols
to
help
us
locate
features
on
the
map.
12. 3) Compass
• An
instrument
containing
a
magnetized
pointer
that
shows the direction of the
magnetic north &
bearings
from
it.
13. 3) Compass (i. Compass Direction)
• There
are
four compass points (cardinal
points):
North
(N),
South
(S),
East
(E)
&
West
(W)
• If
the
north
line
or
compass
rose
is
not
given
on
the
map,
assume
that
north is
towards the top
of
the
map.
14. 3) Compass (i. Compass Direction)
• Can
be
further
divided
into
eight compass
points
(intercardinal
/
ordinal
points).
15. 3) Compass (i. Compass Direction)
• A
16-point compass
rose
(secondary
intercardinal
points):
16. 3) Compass (ii. Compass Bearing)
• The
compass
direction
between
two
points
measured
in
degrees.
(
˚)
(
˚)
(
˚)
(
˚)
(
˚)
(
˚)
(
˚)
(
˚)
17. 3) Compass (ii. Compass Bearing)
• Find
the
compass
bearing
of
the
nearest
hospital
from your
current
location.
Step
1:
Draw compass rose
on
current
location.
Your
current
location
Nearest
hospital
N
18. 3) Compass (ii. Compass Bearing)
• Find
the
compass
bearing
of
the
nearest
hospital
from your
current
location.
Step
2:
Join both locations
with
a
straight
line.
Your
current
location
Nearest
hospital
N
19. 3) Compass (ii. Compass Bearing)
• Find
the
compass
bearing
of
the
nearest
hospital
from your
current
location.
Step
3:
Measure clockwise
starting
from
the
north
arrow.
Your
current
location
Nearest
hospital
N
20. 3) Compass (ii. Compass Bearing)
• Find
the
compass
bearing
of
the
nearest
hospital
from your
current
location.
Step
3:
Measure clockwise
starting
from
the
north
arrow.
Your
current
location
Nearest
hospital
N
180˚
21. 3) Compass (ii. Compass Bearing)
• Find
the
compass
bearing
of
the
nearest
hospital
from your
current
location.
Step
3:
Measure clockwise
starting
from
the
north
arrow.
Your
current
location
Nearest
hospital
N
Ans:
180˚
+
72˚
=
252˚
180˚
23. 4) Contour Lines
• Lines
drawn
on
maps
connecting points of equal
elevation
(ie.
equal
heights).
24. 4) Contour Lines
When
contour
lines
are
far
apart,
it
means
that
the
height
of
land
changes
very
li<le
over
a
short
distance.
This
indicates
a
gentler
slope.
When
contour
lines
are
close
together,
it
means
that
height
of
land
changes
a
lot
over
a
short
distance.
This
indicates
a
steep
slope.
26. 5) Scale
• All
maps
show
things
smaller
than
they
are
in
real
life.
• Maps
are
drawn to
scale for accuracy.
Ratio
scale
Linear
scale
27. 5) Scale (i. Ratio scale)
1 : 25 000 means
that
1
cm
on
the
map
represents
25
000
cm
on
the
actual
ground.
Ratio
scale
1
:
25000
1
cm
(on
map)
:
25000
cm
(actual
ground)
÷
100
1
cm
(on
map)
:
250
m
(actual
ground)
÷
1000
1
cm
(on
map)
:
0.25
km
(actual
ground)
28. 5) Scale (ii. Linear scale)
A
distance
of
3
cm
on
the
map
represents
1
km
on
the
actual
ground.
Linear
scale
29. 6) Grid Reference
• Vertical
grid
lines
are
called
eastings
because
their
values
increase
eastwards.
30. 6) Grid Reference
• Horizontal
grid
lines
are
called
Northings
because
their
values
increase
northwards.
31. 6) Grid Reference (i. 4 Figure grid)
• Used
to
identify
the
general
location of
a
feature
on
a
map.
32. 6) Grid Reference (i. 4 Figure grid)
Find
the
4
figure
grid
reference
of
Lake
Cedric.
Step
1:
Find the grid
where
Lake
Cedric
is
located
in.
Step
1
33. 6) Grid Reference (i. 4 Figure grid)
Find
the
4
figure
grid
reference
of
Lake
Cedric.
Step
2:
Extend
the
lines
on
the
Left-bottom
corner.
Step
2
34. 6) Grid Reference (i. 4 Figure grid)
Find
the
4
figure
grid
reference
of
Lake
Cedric.
Step
3:
Write down the
easting first,
followed
by
the
northing.
Ans:
2 1 3 9
35. 6) Grid Reference (ii. 6 Figure grid)
• Gives
a
more
specific
location
of
a
feature
on
a
map.
36. 6) Grid Reference (ii. 6 Figure grid)
Find
the
6
figure
grid
reference
of
Bob’s
Boathouse.
Step
1:
Find the grid
where
Bob’s
Boathouse
is
located
in.
Step
1
37. 6) Grid Reference (ii. 6 Figure grid)
Find
the
6
figure
grid
reference
of
Bob’s
Boathouse.
Step
2:
Extend
the
lines
on
the
Left-bottom
corner.
Step
2
38. 6) Grid Reference (ii. 6 Figure grid)
Find
the
6
figure
grid
reference
of
Bob’s
Boathouse.
Step
3:
Write
down
the
4
figure
grid
reference.
Step
2
2 1 __ 3 8 __
39. 6) Grid Reference (ii. 6 Figure grid)
Find
the
6
figure
grid
reference
of
Bob’s
Boathouse.
Step
4:
Divide
the
length
&
breadth
of
the
grid
into
10 equal parts.
Step
2
2 1 __ 3 8 __
40. 6) Grid Reference (ii. 6 Figure grid)
Find
the
6
figure
grid
reference
of
Bob’s
Boathouse.
Step
5:
Count
the
grid
line.
Fill
in
the
blank
with
the
line
number.
Step
2
2 1 __ 3 8 __
7
4
4 7