A tiny Python package to parse spice raw data files.

These instructions will get you a copy of the package up and running on your local machine.

Note: at the moment only ascii raw spice format is supported!

pip install spr

pip install git+https://github.com/goncalo-godwitlabs/spr.git

or

git clone [email protected]:goncalo-godwitlabs/spr.git
cd spr/
make install

Just run:

from spr import load_raw
data = load_raw("/path/to/rawspice.raw")

A properly parsed raw spice file by load_raw() returns a dictionary with the following structure:

{
    "title": <str>,
    "date:": <str>,
    "plotname:": <str>,
    "flags:": <str>,
    "no_vars:": <str>,
    "no_points:": <str>,
    "vars": [
        { "idx": <int>, "name": <str>, "type": <str> },
        { "idx": <int>, "name": <str>, "type": <str> }
        ...
        { "idx": <int>, "name": <str>, "type": <str> }
    ]
    "values": {
        "var1": <numpy.ndarray>,
        "var2": <numpy.ndarray>,
        ...
        "varN": <numpy.ndarray>
    }
}

Where values values is a numpy structured array with the actual data.

The following examples make use of ngspice to run the spice simulations, so please ensure it is installed. On ubuntu that would be:

sudo apt install ngspice

Check the directory examples/amplifier/ for details on the cirtcuit and the simulation files.

The schematic:

Run the simulation with:

git clone [email protected]:goncalo-godwitlabs/spr.git
cd spr
make run-example-amplifier

which will fire ngspice generating output.log and rawspice.raw files and also plots the voltages vin and vout.

Check the directory examples/lp_filter/ for details on the cirtcuit and the simulation files.

The schematic:

Run the simulation with:

git clone [email protected]:goncalo-godwitlabs/spr.git
cd spr
make run-example-lp_filter

which will fire ngspice generating output.log and rawspice.raw files and also plots the gain vout/vin in dB.

This project is licensed under the MIT License - see the LICENSE.md file for details