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User Commands  - xy (1)

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NAME

xy(1f) - [M_xyplot] Draw a basic XY plot (LICENSE:PD)

CONTENTS

Synopsis
Description
Options
Example
Author
License

SYNOPSIS

xy [ -f] FILE -xlabel STR -ylabel STR -d DEVICE -m NNNN -fn FILENAME -sz MARKER_SIZE

DESCRIPTION

Create a basic XY plot from a simple ASCII table of numeric values. The first column is assumed to be the shared X values for the other columns.

A plot of all Y columns is followed by a plot of each Y column by default.

If an interactive device is selected (X11, x11, xtek, tek, PC) then a pause occurs after each plot. Single character commands are

o	q quit
o	n next
o	p previous
o	v toggle verbose mode
o	0 redisplay plot of all curves

OPTIONS

-d	M_draw(3fm) device name (X11,pdf,svg, ...). Enter the device name "list" for a list of available devices on an otherwise valid command.
-f	filename of format "X Y1 Y2 Y3 ..."
-fn FNAME
	For file output, the default output name is xy.$DEVICE. If a name is specified containing a period it is used as-is. Otherwise the output file will be FNAME.$DEVICE
-xlabel
	X-axis label. Default is "X"
-ylabel
	Y-axis label. Default is "Y"
-title
	plot title. Defaults to input filename
-m NNN
	marker frequency. Place a marker at every nth point. The default is zero. Negative values suppress drawing the interconnecting lines.
-sz	marker size as a percent of display width. Default is 2.0 .
-verbose
	display plot information to stdout
-help
	display help text to stdout and exit
-version
	display version to stdout and exit

EXAMPLE

Create a simple file with X and Y values and draw plot

      program demo_xy
      integer :: i10
      real :: x, y
         ! set up the data file
         open(unit=10,file=’xy.dat’)
         do i10=1,200
            x=i10*0.50
            y=x*sin(x)*100.0+400.0
            write(10,*)x,y,y+40.0,cos(y)*120.0+380.0
         enddo
         flush(10)
         call execute_command_line(’xy xy.dat -xlabel X-axis -ylabel Y-axis’)
         call execute_command_line(’xy xy.dat -xlabel X-axis -ylabel Y-axis -d pdf’)
         call execute_command_line(’xy xy.dat -xlabel X-axis -ylabel Y-axis -d svg’)
         close(10,status=’delete’)
      end program demo_xy

AUTHOR

John S. Urban

LICENSE

Public Domain

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Nemo Release 3.1

xy (1)

February 23, 2025

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