ngsconvert - Online in the Cloud

PROGRAM:

NAME

sconvert - convert spice formats

SYNOPSIS

sconvert fromtype fromfile totype tofile
sconvert fromtype totype
sconvert

DESCRIPTION

Sconvert translates spice output files among three formats: the old binary format, a new
binary format, and a new ascii format. The formats are specified by the fromtype and
totype arguments: `o' for the old format, `b' for the new binary format, and `a' for the
new ascii format. Fromtype specifies the format to be read, and totype specifies the
format to be written. If fromfile and tofile are given, then they are used as the input
and output, otherwise standard input and output are used. (Note that this second option
is only available on UNIX systems - on VMS and other systems you must supply the
filenames.) If no arguments are given, the parameters are prompted for.

Binary format is the preferred format for general use, as it is the most economical in
terms of space and speed of access, and ascii is provided to make it easy to modify data
files and transfer them between machines with different floating-point formats. The old
format is provided only for backward compatibility. The three formats are as follows:

Old:

What Size in Bytes

title 80
date 8
time 8
numoutputs 2
the integer 4 2
variable names --
char[numoutputs][8] numoutputs * 8
types of output numoutputs * 2
node index numoutputs * 2
plot title numoutputs * 24
the actual data numpoints * numoutputs * 8

Ascii:

Title: Title Card String
Date: Date
[ Plotname: Plot Name
Flags: complex or real
No. Variables: numoutputs
No. Points: numpoints
Command: nutmeg command
Variables: 0 varname1 typename1
1 varname2 typename2
etc...
Values:
0 n n n n ...
1 n n n n ...
And so forth...
] repeated one or more times

If one of the flags is complex, the points look like r,i where r and i are floating point
(in %e format). Otherwise they are in %e format. Only one of real and complex should
appear.

The lines are guaranteed to be less than 80 columns wide (unless the plot title or
variable names are very long), so this format is safe to mail between systems like CMS.

Any number of Command: lines may appear between the No. Points: and the Variables: lines,
and whenever the plot is loaded into nutmeg they will be executed.

Binary:

Title Card (a NULL terminated string)
Date, Time (a NULL terminated string)
[
Plot title (a NULL terminated string)
Number of variables (an int)
Number of data points (an int)
flags (a short)
variable header struct (repeated numoutputs times)
variable name (a NULL terminated string)
variable type (an int)
set of outputs (repeated numpoints times)
] repeated one or more times.

A set of outputs is a vector of doubles of length numoutputs, or a vector of real-
imaginary pairs of doubles if the data is complex.

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