Immagine:Waveforms.svg

PostScript → PNG version

This is a test of gnuplot's SVG output, to compare to the results with postscript output and PNG conversion.

This shows several waveforms: sine wave, square wave, triangle wave, and rising sawtooth wave.

The PNG version looks much nicer.

Could be better. I used the wrong words for the font face, and I am probably doing the margins and graph size wrong.

Uses the same data files as Image:waveforms.png, and the following gnuplot code:

[edit] Source code

set samples 3001
#set terminal postscript enhanced landscape color solid lw 2 "Times-Roman" 20
set terminal svg size 1000 750 fname "Times New Roman" fsize 20
set output "waveforms.svg"

# Define the four curves
sine(x) = sin(x*pi)
#(Originally was going to graph others as functions, but data files are easier)

# Set up a four-pane multiplot
set size 1,1
set origin 0,0

set grid

# Set range of x axis
set xrange [0:6]

# Gridlines at every cycle
set ytics 1

# Ticks distract from wave shapes
set ticscale 0

# Show extents but don't waste space
set yrange [-1.5:1.5]

# No numbers needed; these are for shape comparison
set format x ""
set format y ""

set nokey

#I dont undertand how this works
set bmargin 0
set tmargin 0

g=.04

set multiplot

# Plot each graph
# I don't understand how the labels work in multiplot, but this gives the right output

set size 1,0.25-g
set origin 0,0.75 + g/2
set label 1 "Sine" at 5.5, 0.5 c
plot sine(x) 1

set size 1,0.25-g
set origin 0,0.5 + g/2
set label 1 "Square" at 5.5, 0.5 c
plot "square.dat" with lines 2

set size 1,0.25-g
set origin 0,0.25 + g/2
set label 1 "Triangle" at 5.5, 0.5 c
plot "triangle.dat" with lines 3

set size 1,0.25-g
set origin 0,0 + g/2
set label 1 "Sawtooth" at 5.5, 0.5 c
plot "sawtooth.dat" with lines 4

unset multiplot

Created by User:Omegatron using gnuplot, possibly with post-processing in the GIMP (PNG) or Inkscape (SVG) (actually no GIMP for SVG images)

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Le pagine seguenti richiamano questa immagine:

• Onda a dente di sega