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Difference between revisions of "Coordinate system"

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In order to get the best out of LibreCAD it is wise to have a good understanding of the coordinate system and how coordinates work. Everything that you draw in LibreCAD will be exact and precise and will be placed there accurately based on the X,Y coordinate system.
 
In order to get the best out of LibreCAD it is wise to have a good understanding of the coordinate system and how coordinates work. Everything that you draw in LibreCAD will be exact and precise and will be placed there accurately based on the X,Y coordinate system.
  
The '''absolute origin''' or '''Zero''' point in your drawing is where the X and Y axes cross each other,every entity you draw is located in relation to this origin.
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The '''absolute origin''' or '''Zero''' point in your drawing is where the X and Y axes cross each other (represented by a Red cross),every entity you draw is located in relation to this origin.
  
In LibreCAD there is also the option to set the '''Relative Zero Point'''.This Relative zero point can be temporarily set to a new location in a drawing so that  all subsequent X and Y coordinates of entities drawn or blocks placed for example will be relative to this newly set '''Relative Zero Point'''.
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In LibreCAD there is also the option to set the '''Relative Zero Point''' (small red circle).This Relative zero point can be temporarily set to a new location in a drawing so that  all subsequent X and Y coordinates of entities drawn or blocks placed for example will be relative to this newly set '''Relative Zero Point'''.
  
 
In libreCAD`s 2D coordinate system all '''X''' units are measured horizontally and all '''Y''' units are measured vertically.Coordinates can also be shown as 'Positive' (+) or 'Negative'(-) values.
 
In libreCAD`s 2D coordinate system all '''X''' units are measured horizontally and all '''Y''' units are measured vertically.Coordinates can also be shown as 'Positive' (+) or 'Negative'(-) values.
  
 
=====Examples of X and Y coordinates=====
 
=====Examples of X and Y coordinates=====

Revision as of 22:10, 24 February 2012

The Coordinate system

In order to get the best out of LibreCAD it is wise to have a good understanding of the coordinate system and how coordinates work. Everything that you draw in LibreCAD will be exact and precise and will be placed there accurately based on the X,Y coordinate system.

The absolute origin or Zero point in your drawing is where the X and Y axes cross each other (represented by a Red cross),every entity you draw is located in relation to this origin.

In LibreCAD there is also the option to set the Relative Zero Point (small red circle).This Relative zero point can be temporarily set to a new location in a drawing so that all subsequent X and Y coordinates of entities drawn or blocks placed for example will be relative to this newly set Relative Zero Point.

In libreCAD`s 2D coordinate system all X units are measured horizontally and all Y units are measured vertically.Coordinates can also be shown as 'Positive' (+) or 'Negative'(-) values.

Examples of X and Y coordinates