## lines prefab | Welcome Gallery Handbook |
| Manual page for lines_prefab(PL)

## EXAMPLE 1

       pl -prefab lines  data=data17  x=1 y=2  pointsym=none

       The data17 file:
    	331 75
    	331.624 83.5518
    	332.105 88.7758
    	..etc.

## EXAMPLE 2

       pl  -prefab lines data=data10 delim=tab  x=1  y=2  y2=4  step=yes \
         yrange=0 name="Group A" name2="Group B" xlbl=Months

## EXAMPLE 3

       pl  -prefab lines  data=data10 delim=tab  x=1  y=2 err=3  y2=4 err2=5  \
           y3=6 err3=7  y4=8 err4=9   yrange=0  xlbl=Months \
           name="Group A" name2="Group B" name3="Group C" name4="Group D"

       The data10 file:
           0	100	2	100	4	100	3	100	4
           1.5	92	4	94	7	87	6	86	5
           3	89	4	92	8	78	6	74	4
           6	86	5	91	8	65	8	61	6
           ..etc.

How to run these examples

## DESCRIPTION

lines is a prefab for producing line plots with optional point symbols and error bars, for up to four groups.`` For the first group data points are in data fields given in x and y, and optional error bar value given in err.`` By default x is assumed to be continuous numeric, but it can be categories if cats is specified (for chronological X data, use the chron prefab ).`` To display a second curve, use y2, err2, etc.`` Same for third and fourth curves.`` This prefab is based on proc lineplot .``

## PARAMETERS

standard prefab parameters are all supported. data, x and y are required.``

  name is a short description for the first curve, for inclusion in a legend.``

  linedet controls line appearance details for the first curve.

  pointsym controls the data points on the first curve.`` symbol . It may be given as `none` for no point symbol.``

  y2, err2, name2, linedet2, and pointsym2 may be specified for a second curve. x will be used for the X component of the curve.``

  y3, err3, name3, linedet3, and pointsym3 may be specified for a third curve. x will be used for the X component of the curve.``

  y4, err4, name4, linedet4, and pointsym4 may be specified for a fourth curve. x will be used for the X component of the curve.``

  step may be specified as `yes` to get stairstep curves.`` This turns off point symbols.``

  fill may be specified as `yes` in order to fill the area under the curve with a solid color. If this is used the linedet attribute(s) should each contain a color

  cats may be specified as `yes` to signify that X values are categories rather than numeric.``

  errcolor is the error bar color (default = black)

  errwidth is the width of error bar tails (default = 0.08)

  errthick is the thickness of the error bar lines (default = 0.5)

  legend controls the location of the legend. Example: `"legend=1 0.5"` Default is `min+0.4 max`.``
  data display engine
  Copyright Steve Grubb

Markup created by unroff 1.0, `` `` September 14, 2001.