in reply to Re: Re: Drawing reference lines with GD::Graph
in thread Drawing reference lines with GD::Graph

Could you be more explicit about what you mean by a vertical reference line?

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Clayton
  • Comment on Re: Re: Re: Drawing reference lines with GD::Graph

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Re: Re: Re: Re: Drawing reference lines with GD::Graph
by phildog (Novice) on Jan 23, 2004 at 16:45 UTC
Re: Re: Re: Re: Drawing reference lines with GD::Graph
by Mr. Muskrat (Canon) on Jan 23, 2004 at 04:47 UTC

    Could you be more explicit about what you mean by a vertical reference line?

    It's really self-explanatory... Vertical is perpendicular to the horizontal; at right angles to the horizon. A reference line is a line that shows a point of reference.

    In relation to a graph, a vertical reference line is a line that extends from the top of the graph to the bottom of the graph at a point on the X axis to give a frame of reference for the rest of the graph.