example2





# input the library


source zplot.tcl


namespace import Zplot::*





# describe the drawing surface


PsCanvas -title "example2.eps" -width 3in -height 2.4in





# load some data


Table -table t -file "file.data"





Table -table thi -columns x,y,ylo,yhi


TableSelect -from t -to thi -where {$y > 5}





# make a drawable region for a graph


Drawable -xrange 0,10 -yrange 0,10





# make some axes


AxesTicsLabels -title "Using Table Selection" -xtitle "The X-Axis" -ytitle "The Y-Axis"





# plot the points


PlotPoints -table t -xfield x -yfield y -style triangle -linecolor red -fill t -fillcolor red


PlotPoints -table thi -xfield x -yfield y -style circle -linecolor green -size 5 -linewidth 2





# finally, output the graph to a file


PsRender -file "example2.eps"
Data: file.data