LTSpice data parsing library for python

Installation

$ pip install ltspice

Supported Files

encoding : UTF8 / UTF16-LE
format : Binary / Ascii
extenstion : .raw / .fft

Usage

import ltspice
filepath = 'Your ltspice output file (.raw)'
l = ltspice.Ltspice(filepath)
l.parse() # Data loading sequence. It may take few minutes for huge file.

time = l.get_time()
V1 = l.get_data('V(N1)')

Examples

01 - RC Circuit

LTSpice file (.asc)

Python code (.py)

import ltspice
import matplotlib.pyplot as plt
import numpy as np
import os

l = ltspice.Ltspice(os.path.dirname(__file__)+'\\rc.raw') 
# Make sure that the .raw file is located in the correct path
l.parse() 

time = l.get_time()
V_source = l.get_data('V(source)')
V_cap = l.get_data('V(cap)')

plt.plot(time, V_source)
plt.plot(time, V_cap)
plt.show()

Output result

02 - Multi point simulation

LTSpice file (.asc)

Python code (.py)

import ltspice
import matplotlib.pyplot as plt
import numpy as np
import os

l = ltspice.Ltspice(os.path.dirname(__file__)+'\\rectifier.raw') 
# Make sure that the .raw file is located in the correct path
l.parse() 

time = l.get_time()
V_source = l.get_data('V(source)')
V_cap_max = []

plt.plot(time, V_source)
for i in range(l.case_count): # Iteration in simulation cases 
    time = l.get_time(i)
    # Case number starts from zero
    # Each case has different time point numbers
    V_cap = l.get_data('V(cap,pgnd)',i)
    V_cap_max.append(max(V_cap))
    plt.plot(time, V_cap)

print(V_cap_max)

plt.xlim((0, 1e-3))
plt.ylim((-15, 15))
plt.grid()
plt.show()

Output result

$ [8.299080580472946, 7.855469107627869, 7.391375303268433, 6.944645524024963, 6.529755532741547]

If you want to find more usage examples, please check examples folder.

Metadata

Release files for ltspice 1.0.6

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for ltspice 1.0.6
File	Size	Uploaded
ltspice-1.0.6.tar.gz	6.2 kB	Oct 4, 2022	Details

Release files / ltspice-1.0.6.tar.gz

Download URL	ltspice-1.0.6.tar.gz
Size	6.2 kB
Tags	Source
SHA-256 checksum How to use checksums	`b9ec773e35262f72379a44c70874c3967100593e34802ec0546af656adfa17a7`
BLAKE2b-256 checksum How to use checksums	`6a7b80a1552d54ffd1854b9f5a762227aaddcee7a2ee1447be298e804f087019`
Upload date	Oct 4, 2022
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/3.4.2 importlib_metadata/4.6.1 pkginfo/1.7.1 requests/2.26.0 requests-toolbelt/0.9.1 tqdm/4.61.2 CPython/3.9.14`