DescriptionBode plot template.pdf	English: bode plot created with gnuplot
Date	11 June 2007
Source	Own work
Author	Mik81
Other versions	This file has been superseded by Bode plot template.svg. It is recommended to use the other file. Please note that deleting superseded images requires consent.

# set terminal svg enhanced size 875 1250 fname "Times" fsize 25
set terminal postscript enhanced portrait dashed lw 1 "Helvetica" 14
set output "bode.ps"

# ugly part of something
G(w,n) = 0 * w * n + 100000 # 1 / (sqrt(1 + w**(2*n)))
dB(x) = 0 + x + 100000
# 20 * log10(abs(x))
P(w) = w * 0 + 200 # -atan(w)*180/pi

# Gridlines
set grid

# Set x axis to logarithmic scale
set logscale x 10
set logscale y 10
# No need for a key
set nokey #0.1,-25

# Frequency response's line plotting style
set style line 1 lt 1 lw 2

# Asymptote lines and slope lines are the same "arrow" style
set style line 3 lt 3 lw 1
set style arrow 3 nohead ls 3

# -3 dB arrow style
set style line 4 lt 4 lw 1
set style arrow 4 head filled size screen 0.02,15,45 ls 4

# Separator between passband and stopband line style
set style line 2 lt 2 lw 1 
set style arrow 2 nohead ls 2



set multiplot

# Magnitude response
# =============================================
set size 1,0.5
set origin 0,0.5

# Set range of x and y axes
set xrange [0.001:1000]
set yrange [0.001:100]
#set yrange [-50:150]

# Create x-axis tic marks once per decade (every multiple of 10)
set xtics 10
set ytics 10

# Use 10 x-axis minor divisions per major division
set mxtics 10
set mytics 10

# Axis labels
set ylabel "Gain"

plot dB(G(x,1)) ls 1  title "1st-order response"



#Phase response
# =============================================
set size 0.967,0.45
set origin 0.033,0.05

unset logscale y
# Set range of x and y axes
set yrange [-285:105]

# Create y-axis tic marks every 15 degrees
set ytics 45
set mytics 3 


# Axis labels
set ylabel "Phase"
set xlabel "Frequency"

plot P(x) ls 1 title "Phase response"


unset multiplot

This work has been released into the public domain by its author, Mik81. This applies worldwide. In some countries this may not be legally possible; if so: Mik81 grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.