How to plot pole zero results in ngspice

Le Wed, 17 Jan 2007 23:17:42 -0800, snipped-for-privacy@gmail.com a écrit :

Hi Hugo

So far i've never used PZ plotting. But, have you ever used polar or smith(grid) parameters within plot command ? May be is it possible to feed GnuPlot with PZ results ...

Habib

Hi Habib, In fact I use Gnuplot now as a "workaround" for plotting my PZ results, I copy and paste the results of the pz-analysis in a data-file and then plot them using Gnuplot. If I could tell ngspice to produce a pz-analysis in batch (like ngspice

Le Thu, 18 Jan 2007 01:48:39 -0800, snipped-for-privacy@gmail.com a écrit :

Ok then, I understand what are your needs ... I did this (mostly perfectible !)

#!/bin/sh

touch report_binary.out touch report_ascii.out echo "run" | ngspice -b test.cir -r report_binary.out | ngsconvert b report_binary.out a report_ascii.out rm report_binary.out cat report_ascii.out

I will improve it later ... may be.

Cheers, Habib

feed

rt_binary.out a report_ascii.out

unfortunately this does not work as you get again an error message (see previous thread) for the pole-zero analysis: echo "run" |ngspice -b test.cir gives: Error: no data saved for pole-zero analysis; analysis not run

thanks for trying

hugo

Le Fri, 19 Jan 2007 00:27:01 -0800, snipped-for-privacy@gmail.com a écrit :

report_binary.out a report_ascii.out

Hi Hugo, the shell-script above (run.sh) runs on my Debian, see what i have :

habib@aldebaran:~/GNU-TOOLS/ng-spice-rework-17/tests/polezero$ ./run.sh No. of Data Columns : 5

No. of Data Rows : 121 No. of Data Columns : 3

No. of Data Rows : 1 Title: test Date: Fri Jan 19 08:57:16 2007 Plotname: Pole-Zero Analysis Flags: complex No. Variables: 3 No. Points: 1 Variables: 0 pole(1) voltage 1 pole(2) voltage 2 zero(1) voltage Values: 0 -2.618033988749895e+00,0.000000000000000e+00 -3.819660112501052e-01,0.000000000000000e+00 -3.333333333333333e-01,0.000000000000000e+00

habib@aldebaran:~/GNU-TOOLS/ng-spice-rework-17/tests/polezero$

to feed

ts,

hen

eport_binary.out a report_ascii.out

can you show me the contents of your test.cir?

regards, hugo

Le Fri, 19 Jan 2007 11:54:43 -0800, snipped-for-privacy@gmail.com a écrit :

feed

report_binary.out a report_ascii.out

Sure Hugo,

test vin 1 0 dc 0 ac 1 r1 1 2 1 c1 2 0 1 r2 1 3 1 c2 3 2 1

.print ac v(3)

.pz 1 0 3 0 VOL PZ .ac dec 20 10m 10k

.end

It's always the same (yours in fact) test circuit !

Habib

rit :

r or

le to feed

sults,

d then

also

b report_binary.out a report_ascii.out

see

See what I get with the run.sh mentioned above and this test.cir: coolens@antec:~/pald$ ./run.sh Usage: sconvert fromtype fromfile totype tofile, where types are o, b, or a or, sconvert fromtype totype, used as a filter. No. of Data Columns : 5

No. of Data Rows : 121 No. of Data Columns : 3

No. of Data Rows : 1 ./run.sh: line 6: report_binary.out: command not found

I think there is something wrong with the ngsconvert b

regards, hugo

Le Sat, 20 Jan 2007 08:11:01 -0800, snipped-for-privacy@gmail.com a écrit :

to feed

results,

then

report_binary.out a report_ascii.out

Hi Hugo,

I think you forgot a CR-LF sequence after each shell instruction line in run.sh.

Cheers, Habib

rit :

=E9crit :

olar or

sible to feed

results,

and then

ld also

rt b report_binary.out a report_ascii.out

e (see

t i

n=2Esh

now it works perfectly, thank you very much Habib

hugo