LON-CAPA Help

The curve tag is where you set the data to be plotted by gnuplot.

The following parameters may be present in the curve tag and allow access to most of the formatting parameters for a curve in gnuplot.

• color

  The color of the curve on the plot. See "Selecting Colors" section .

• name

  If a key is present, the name of the curve will appear with a sample of its line type.

• linestyle

  See "Line Styles" section for more information about the available line styles and their data requirements.

• linetype

  The type of line. Current options include 'solid' and 'dashed'. At this time, all dashed lines draw with line width of '1' in web output. This parameter may not apply to all linestyles.

• linewidth

  The thickness of the line drawn by plotting engine. This parameter may not apply to all linestyles.

• pointtype

  This parameter may not apply to all linestyles.

• pointsize

  This parameter may not apply to all linestyles. The size of the points, in pixels, present on the line. Some point types are not affected by this parameter.

• limit

  This parameter controls the pont to fill for fillled curves.

• arrowhead

  For vector plots, controls where in the vector the arrow head(s) appear

• arrowstyle

  For vector plots controls the fill style of the arrow.

• arrowlength

  For vector plots determines the distance between the vector line end and the tip of the arrow.

• arrowangle

  For vector plots, determines the angle the arrow branches make with the vector line.

• arrowbackangle

  For vector plots, determines the angle the arrow lines that return to the main line from the branches make with the arrow branches.

There are two ways of entering the information to be plotted, which are accessed using the subtags of curve, data (see "Plotting Data Points" section ) and function (see "Plotting Functions" section ).