Layout Settings

Basic setup of drawing : Layout preparation requires following commands. 

● Units : The format for display co-ordinates and measurement units.

(i) Decimal

(ii) Engineering

(iii) Architectural

(iv) Fractional

(v) Scientific


Use Units menu to change the units to Engineering or Architectural type.


● Limits


The command LIMITS sets and controls the drawing boundaries.


At the command prompt, type LIMITS and enter


ON/OFF/<Lower left corner> <current> :


[ Possible actions : (1) Specify a point

(2) type ON and enter

(3) type OFF and enter

(4) press enter to terminate the LIMITS command]


The LIMITS is used to set up the area of a drawing started from scratch or to change the area settings of an existing drawing.

The default drawing area is 12 X 9 ( in inches).

The drawing area provides cross hairs, which are the two lines at right angles and the crossing point is a point of selection. The cross hairs are connected to mouse and the crossing point can be scrolled up-down and right-left.

■ ORTHO button on status bar is then set to ON. As a result, the cursor will move straight only like a rook moves on the chess board.


■ Specifying co-ordinates

There are two basic methods of specifying the distance or co-ordinates


1.1] SPECIFYING ABSOLUTE CO-ORFINATES : This method is similar to how you draw points on the graph paper by specifying X and Y co-ordinates of the point.

ABSOLUTE COORDINATES : Coordinate values measured from a coordinate system's origin point.


1.2.1] SPECIFYING RELATIVE CO-ORDINATES : In this method, you have to specify the co-ordinates with reference to an already drawn point. This is as if you have shifted the origin to that point.

User Coordinate System (UCS) is a co-ordinate system in which user can fix his/her origin at any point.

UCS icon : UCS stands for User Coordinate System icon. An icon that indicates the orientation of UCS axes. UCS icon manages user co-ordinate system.

OR

At the command prompt, enter UCS

Origin / ZAxis / 3point / OBject / View / X / Y / Z / Prev / Restore / Save / Del / ? / < World> :

[ Possible actions : (1) Enter an option

(2) press enter to terminate the UCS command]

1.2.2] SPECIFYING POLAR CO-ORDINATES :

In this method, one has to Specify the distance and angle at which one requires to draw the new line.


2] THE DIRECT DISTANCE METHOD :

Type the distance while one is traversing with the mouse. Just show the direction with the mouse and type the figure.


□ ZOOM ALL

● Command ZOOM


This increases or decreases the apparent size of objects in the current viewport.


At the Command prompt, enter ZOOM


ALL / Center / Dynamic / Extents / Left / Previous / Vmax / Window / <Scale(X/XP)> :


[ Possible actions : (1) Type an option or value and enter

(2) Specify a point

(3) press enter to terminate the ZOOM command]

ZOOMING is like viewing the object with a lense. ZOOM does not change size / dimensions of the object. One can ZOOM the objects by moving the scroll button of mouse.

ZOOM is available in VIEW menu and ZOOM ALL is one of the many options.

The commands ZOOM ALL should be issued every time one set the LIMITS.

□ Prepare to draw borders.






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