AutoCAD_Drafting images by Coordinate System Methods_Week 1
AIM: To create the geometries from P1 to P2 using all the coordinates system methods using the Line tool and circle tool.
INTRODUCTION: Autocad offers 3 coordinate systems in which we can draw sketches. The following are the coordinate systems:
- Absolute coordinate system: Use of cartesian coordinate system where all the coordinates are with respect to the origin(0,0). Syntax: (1,2)
- Relative rectangular coordinate system: Coordinate system where the coordinates are with respect to the previous coordinate. Syntax: @1,2
- Polar coordinate system: this system includes coordinates whose length and angle are specified. Syntax:@2<90
Procedure:
- Select Imperial system and decimal units.
- Use the line command and enter the coordinates.
- The coordinates for each sketch are as follows:
- P1:
- Absolute coordinate system:
- 2,1
- 8,1
- 8,2
- 3,2
- 3,6
- 8,6
- 8,7
- 2,7
- Close
- Relative rectangular coordinate system:
- 2,1
- @6,0
- @0,1
- @-5,0
- @0,4
- @5,0
- @0,1
- @-6,0
- close
- Polar coordinate system:
- 2,1
- @6<0
- @1<90
- @5<180
- @4<90
- @5<0
- @1<90
- @6<180
- @6<270 or close

- Absolute coordinate system:
- P2:
- Absolute coordinate system:
- 2,1
- 5,1
- 5,5
- 6,5
- 6,1
- 9,1
- 7,8
- 4,8
- close
- Relative rectangular coordinate system:
- 2,1
- @3,0
- @0,4
- @1,0
- @0,-4
- @3,0
- @-2,7
- @-3,0
- close
- Polar coordinate system:
- 2,1
- @3<0
- @4<90
- @1<0
- @4<270
- @3<0
- @7.28<105.95
- @3<180
- @7.28<254.058 or close

- Absolute coordinate system:
- P3:
- Absolute coordinate system:
- 2,1
- 3,1
- 3,5
- 5,3
- 7,5
- 7,1
- 8,1
- 8,8
- 7,8
- 5,5
- 3,8
- 2,8
- close
- Relative rectangular coordinate system:
- 2,1
- @1,0
- @0,4
- @2,-2
- @2,2
- @0,-4
- @1,0
- @0,7
- @-1,0
- @-2,-3
- @-2,3
- @-1,0
- close
- Polar coordinate system:
- 2,1
- @1<0
- @4<90
- @2.83<315
- @2.83<45
- @4<270
- @1<0
- @7<90
- @1<180
- @3.61<236.204
- @3.61<123.69
- @1<180
- @7<270 or close

- Absolute coordinate system:
- P4:
- Absolute coordinate system:
- 2,1
- 3,1
- 3,8
- 8,8
- 8,2
- 5,2
- 5,1
- 9,1
- 9,9
- 2,9
- close
- Relative rectangular coordinate system:
- 2,1
- @1,0
- @0,7
- @5,0
- @0,-6
- @-3,0
- @0,-1
- @4,0
- @0,8
- @-7,0
- close
- Polar coordinate system:
- 2,1
- @1<0
- @7<90
- @5<0
- @6<270
- @3<180
- @1<270
- @4<0
- @8<90
- @7<180
- @8<270 or close

- Absolute coordinate system:
- P5:
- Absolute coordinate system:
- 2,1
- 10,1
- 10,7
- 2,7 and close
- 3,2
- 5,2
- 5,5
- 3,5 and close
- 6,2
- 8,2
- 8,5
- 6,5 and close
- Relative rectangular coordinate system:
- 2,1
- @8,0
- @0,6
- @-8,0 and close
- 3,2
- @2,0
- @0,3
- @-2,0 and close
- 6,2
- @2,0
- @0,3
- @-2,0 and close
- Polar coordinate system:
- 2,1
- @8<0
- @6<90
- @8<180
- @6<270
- 3,2
- @2<0
- @3<90
- @2<180
- @3<270
- 6,2
- @2<0
- @3<90
- @2<180
- @3<270

- Absolute coordinate system:
- P6:
- Absolute coordinate system:
- 0,0
- 10,0
- 10,2
- 6,2
- 6,6
- 9,6
- 9,8
- 1,8
- 1,6
- 4,6
- 4,2
- 0,2
- close
- Relative rectangular coordinate system:
- 0,0
- @10,0
- @0,2
- @-4,0
- @0,4
- @3,0
- @0,2
- @-8,0
- @0,-2
- @3,0
- @0,-4
- @-4,0
- close
- Polar coordinate system:
- 0,0
- @10<0
- @2<90
- @4<180
- @4<90
- @3<0
- @2<90
- @8<180
- @2<270
- @3<0
- @4<270
- @4<180
- @2<270

- Absolute coordinate system:
- P7:
- Absolute coordinate system:
- 1,1
- 6,1
- 6,3
- 3,3
- 3,2
- 2,2
- 2,4
- 5,4
- 5,6
- 1,8
- close
- Relative rectangular coordinate system:
- 1,1
- @5,0
- @0,2
- @-3,0
- @0,-1
- @-1,0
- @0,2
- @3,0
- @0,2
- @-4,2
- close
- Polar coordinate system:
- 1,1
- @5<0
- @2<90
- @3<180
- @1<270
- @1<180
- @2<90
- @3<0
- @2<90
- @4.47<153.435
- @7<270

- Absolute coordinate system:
- P8:
- Absolute coordinate system:
- 1,1
- 3,1
- 3,4
- 6,4
- 6,8
- 1,8 and close
- 2,5
- 5,5
- 5,7
- 2,7
- close
- Relative rectangular coordinate system:
- 1,1
- @2,0
- @0,3
- @3,0
- @0,4
- @-5,0 and close
- 2,5
- @3,0
- @0,2
- @-3,0
- close
- Polar coordinate system:
- 1,1
- @2<0
- @3<90
- @3<0
- @4<90
- @5<180
- @2,5
- @3<0
- @2<90
- @3<180
- @2<270

- Absolute coordinate system:
CIVIL WORK
- Profile-Wood:
- 0,0
- 10,0
- 10,1
- 8,1
- 8,5
- 10,5
- 10,6
- 5,9
- 0,6
- 2,6
- 2,1
- 0,1
- Circle command at centre: 5,4

- Queen post truss
- 1,1
- 1,5
- 8,5
- 8,1
- 1,5
- 4.5,8.5
- 8,5
- 2,5
- 2,6
- 4.5,5
- 7,6
- 7,5
- 4.5,5 to 4.5,8.5

- Mono pitch
- 1,1
- 3,1
- 5,1
- 7,1
- 7,3 and close
- 3,1 to 3,1.667
- 5,1
- 5,2.333
- 7,1

RESULT: The sketches have been drawn using all three coordinate systems.