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4.2. GRAPH COMMANDS (IN DETAIL) 27100‘d1 line impulses’ ‘d1 line steps’ ‘d1 line fsteps’ ‘d1 line hist’1001001008080808060606060404040402020202000 5 10 15 2000 5 10 15 2000 5 10 15 2000 5 10 15 20Figure 4.2: The impulses, steps, fsteps, and hist options of the line command.Noisy Sine svg smooth 1 svg smooth 51.51.01.51.01.51.00.50.50.50.00.00.0-0.5-0.5-0.5-1.0-1.0-1.0-2 - 0 2 -2 - 0 2 -2 - 0 2deresolve 10 deresolve 10 average deresolve 10 average smooth1.51.01.51.01.51.00.50.50.50.00.00.0-0.5-0.5-0.5-1.0-1.0-1.0-2 - 0 2 -2 - 0 2 -2 - 0 2Figure 4.3: Various smooth options.dn marker marker-name [msize marker-size] [mdata dn]Specifies the marker to be used for the dataset. There is a set of pre-defined markers (refer toAppendix A.1 for a list) which can be specified by name (e.g., circle, square, triangle, diamond, cross,...). Markers can also be a user-defined subroutine (See the define marker command in Chapter2). The mdata option allows a secondary dataset to be defined which will be used to pass anotherparameter to the marker subroutine, this allows each marker to be drawn at a different angle,sizeor colour.The msize qualifier sets the marker size for that dataset. The size is a character height in cm, sothat the actual size of the markers will be about 0.7 of this value.dn nomissIf a dataset has missing values, GLE will not draw a line to the next real value, which leaves a gapin the curve. To avoid this behavior simply use the nomiss qualifier on the dn command used todefine the line. This simply ignores missing values.Ignore missing values (nomiss)begin graph10title "Ignore missing values (nomiss)"8xtitle "Time"ytitle "Output"6data "tut.dat"4d1 lstyle 22d2 nomiss lstyle 1 marker diamond msize .2end graph 01 2 3 4 5Timedn [smooth] [smoothm] lineThis will make GLE draw a smoothed line through the points. A third degree polynomial is fittedpiecewise to the given points.The smoothm alternative will work for multi valued functions, i.e., functions which have more thanone y value for each x value.Output