KURT PETERS wrote: > > > > KURT PETERS wrote: > > > > > > Date: Sun, 02 Aug 2009 19:05:03 -0600 > > > > > > From: Mark Johnson <[email protected]> > > > > > > Subject: gEDA-user: can't plot time on x axis with KJWave > > > > > > To: gEDA user mailing list <[email protected]> > > > > > > Message-ID: <[email protected]> > > > > > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > > > > > > > > > I've been trying to get a plot of a transient analysis with > KJ > > > > > Waves. > > > > > > I've gotten the analysis to run. When the "Select Axis > > > Variables" > > > > > > window appears, time is not an option under X axis. I can > only > > > plot > > > > > the > > > > > > output I chose prior to the simulation - on both x- and > y-axes. > > > > > > Needless to say, this doesn't help me much. > > > > > > > > > > > > I'm using version 1.1.3 of KJ Waves, recently downloaded, > and > > > > > version > > > > > > 6u12 of the Java Runtime (included as part of the JDK). > > > > > > > > > > > > Can anyone help? > > > > > > > > > > > > Mark Johnson > > > > > Mark, > > > > > Can you post the first few lines (which should be in red) in > your > > > > > KJWaves netlist? > > > > > What I'd be looking for is to ensure you indeed are asking > ngspice > > > for > > > > > a transient analysis and what variables you're asking it to > store. > > > > > Kurt > > > > > > > > > Here it is: > > > > * gnetlist -g spice-sdb -o test3h.net test3.sch > > > > .TRAN 10.0U 10.0M 10.0U 10.0U > > > > .SAVE V(Vout) > > > > .OPT NOPAGE NOMOD > > > > .WIDTH OUT=133 > > > > ********************************************************* > > > > > > > > I'm assuming that ngspice automatically will save the time as it > > > does > > > > for .print. I'm using rework 19 of ngspice. > > > > > > > > Mark > > > Mark, > > > I would not assume that. > > > To determine whether that's the problem, how about trying to > > > comment the '.SAVE' statement out once and see if time shows up? > It > > > might create a gargantuan file depending on how much you're > > > simulating, but I think KJWaves can handle pretty big files. > > > > > > I also notice that you use the .TRAN with a start time and a TMAX > > > time. I'm not sure you might want to use those initially. If the > > > above doesn't give you a "time" selection, how about trying the > .TRAN > > > statement with only the "typical" TSTEP and TSTOP times specified? > > > Kurt > > > > > If I comment out the .SAVE, it does create a much larger file > (almost > > 50Meg). That took quite a while to load. Now, it does not offer any > > options for either the x- or the y-axis when I select "transient > > analysis" on the left. I should note that there two "transient > > analyses" on the left. One is from the one I specified through > KJWaves; > > the other via an include file. It has the same .TRAN line as the > first, > > but includes a .PRINT, and sets some options. > > > > Restoring the .SAVE line and changing the .TRAN line as suggested > leads > > to this: > > * gnetlist -g spice-sdb -o test3h.net test3.sch > > .TRAN 10.0U 10.0M > > .SAVE V(Vout) > > .OPT NOPAGE NOMOD > > .WIDTH OUT=133 > > > > Now, I still don't get any options to plot for either axis. > > > > Aha! You did give me the clue though. That first test made me wonder > > if perhaps my .INCLUDE was interfering. So I commented that out and > it > > works! > > > > Thanks. This should make my plotting much easier. > > > > Mark > Mark, > I'm glad you were able to work it out. I'm curious as to what > .INCLUDE did. DId you NOT include a file necessary for simulation? > We don't want that. Or did you just comment that "extra" .TRAN in the > included file? > > Regards, > Kurt > The include file included the .TRAN and .PRINT commands and a few options I was using when running ngspice from the command line. I had changed the method to GEAR from the default, but that turned out not to be essential.
Mark _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
