Horizontal and vertical vector lines on screen do not appear to be straight, but they were in the original drawing. Why?
What you see on screen is only a visual display of the actual stored CAD file and does not represent what the file will create on a plotter or printer. The vector points, also seen on screen, more accurately depict the vectors as they will be plotted. What you are seeing is the result of a slightly askew scan. When a computer depicts straight lines on screen they will appear straight, without a jagged appearance, only when they are absolutely square to the screen’s matrix. That is if they are perfectly parallel to or at right angles to the horizontal scan of the monitor If they are slightly off square the computer tells the screen to depict the straight line as a Cathode Ray Tube scan series which might be: Fill 100 pixels horizontally, go down 1 pixel, fill 100 pixels horizontally, etc. It is this small one or two pixel step down which makes straight lines appear to have a jog or appear jagged on screen. The underlying vector which it is representing is a single point-to-point line. C
