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spiceplot

Binaries available at releases!

A program written in Go and using plotinum that interprets raw spice files and produces pretty plots in .svg, .png, .jpg, .jpeg, .eps, .tiff, .pdf formats.

Features:

  • Plotting specific variables
  • Calculating expressions

Future:

  • Plotting expressions
  • Complex variables
  • Calculating expressions better

Installation with Go:

go get github.com/norcalli/spiceplot

This will install spiceplot into your bin directory for your Go installation.

Requires:

  • bc for expressions. This will be removed eventually.
  • Uses plotinum and my rawspice package, but those are automatically installed.

Usage:

Usage: ./spiceplot [flags] <rawfile> <output>

Supported formats for the output are: .svg, .png, .jpg, .jpeg, .eps, .tiff, .pdf.
Possible flags:
  -e="": Comma separated string of expressions to evaluate
  -v="": Comma separated string of variables to plot

Examples:

In the examples, I am using ngspice. You can use ./testobot.sh examples/2b to automatically generate plots with ngspice. I've also provided some .raw files under examples to play with which were generated from ngspice.

ngspice -b examples/2b.net -r examples/2b.raw >/dev/null

./spiceplot -e 'v(b)-v(e)' examples/2b.raw examples/2b.svg

#rm examples/2b.raw

Output:

*hw3.2b: Operating Point
v(vdd) = 2
v(b) = 2
v(e) = 1.2791278613171688
i(vb) = 8.471046155287428e-06
i(v1) = -0.0012791278633171779
v(b)-v(e) = 0.7208721386828312

ngspice -b examples/oscillator.net -r examples/oscillator.raw >/dev/null

./spiceplot examples/oscillator.raw examples/oscillator.svg

Output:

*cmos ring oscillator example: Transient Analysis
Outputting  examples/oscillator-0-voltage.svg
Outputting  examples/oscillator-0-current.svg
time = 0
v(vdd) = 3
v(vss) = 0
v(1) = 1.7573593126682514
v(2) = 1.7573593126682516
v(3) = 1.7573593126682516
v(4) = 1.7573593126682516
v(5) = 1.7573593126682516
i(v2) = 0.004411873942866134
i(v1) = -0.0044118739428661395


ngspice -b examples/oscillator.net -r examples/oscillator.raw >/dev/null

./spiceplot -v 'i(v1)' examples/oscillator.raw examples/oscillator.svg

Output:

*cmos ring oscillator example: Transient Analysis
Plotting 1 variables: Set{i(v1)}
i(v1)
Outputting  examples/oscillator-0-current.svg
time = 0
v(vdd) = 3
v(vss) = 0
v(1) = 1.7573593126682514
v(2) = 1.7573593126682516
v(3) = 1.7573593126682516
v(4) = 1.7573593126682516
v(5) = 1.7573593126682516
i(v2) = 0.004411873942866134
i(v1) = -0.0044118739428661395