CoNtOuR LiNeS

1
CoNtOuR LiNeS
Drawing

• DeMarco

2
A bit more practice with isolines!

• Lets put in a 10ft contour interval line!

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
hmm... that didn't help much
like, where do I draw the line?
3
A bit more practice with isolines!

• Lets put in a 10ft contour interval line!

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
?
4
A bit more practice with isolines!

• Lets put in a 10ft contour interval line!

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
Well, where would 10 be?
Between 9 11 Duh!
Beteween HERE!
5
A bit more practice with isolines!

• Lets put in a 10ft contour interval line!

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
Well, where would 10 be?
HERE
6
A bit more practice with isolines!

• Lets put in a 10ft contour interval line!

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
7
A bit more practice with isolines!

• Lets put in a 10ft contour interval line!

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
Don't forget up here too!
8
A bit more practice with isolines!

• HOW ABOUT THE 20?

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
9
A bit more practice with isolines!

• HOW ABOUT THE 30?

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
10
A bit more practice with isolines!

• What if we were to use a 5ft contour interval?

0 5 15 28 30 29 29 28 26 4 9 15 25 35 33 30 25
20 6 11 18 29 25 31 26 21 16 11 13 14 21 19 17
15 12 11 14 14 15 16 16 15 13 10 10 14 14 14
15 14 13 10 9 5 14 12 11 11 10 8 5 3 3 13 12 1
1 9 8 4 3 3 1
steep
flat