Read ngspice

Loads data from ngspice simulations into MATLAB

Description

% [Data, Labels] = ReadSpice(filename)
%
% Data is an MxN matrix containing the values of the M variables
% at each of the N datapoints.
%
% Labels is a M-vector with the Mth label corresponding to the
% Mth row in Data
%
% This script has been tested on raw (-r Out.raw) data from
% ngspice-rework17.
%
% Usage example:
% [data, labels] = ReadNGSpice('out.raw');
% labels (to view how the data is labeled)
% plot(data(1,:), data(6,:));
% title('Oscillator Output (V)');

• Acknowledgements: This submission has inspired the following:; Read ngspice MOD
• MATLAB release: MATLAB 7.7 (R2008b)
• Other requirements: ngspice rework17

[Mehmet Ali An1l]

I guess the code doesn't wiork with ngspice rework 19.
e.g.

>> [data,labels] = ReadNGSpice('rawfile.raw')
??? Error using ==> ReadNGSpice at 51
Assertion failed.

rawfile.raw is read by ngnutmeg.

[KBT WARKBT]

I modify the script to work on ngspice rework 18 the one that comes with fc10:

http://www.mediafire.com/?mj2jn3k52iz

I removed assert instructions to keep some backwards compatibility, and modify the way to read data + minor details.

At least for me ,it works ...
Hope it helps someone

[Jas Condley]

Updated the regular expressions. The built-in assert in newer versions of matlab seems to mess things up too, so use of the assert file found here is necessary.

Updated files can be found at:
http://users.soe.ucsc.edu/~jas/matlab-ng/

This works with the raw output of ngspice-19