search

StefanSchippers / xschem

A schematic editor for VLSI/Asic/Analog custom designs, netlist backends for VHDL, Spice and Verilog. The tool is focused on hierarchy and parametric designs, to maximize circuit reuse.
Other
318 stars 21 forks source link

question: plot different simulations in one sheet? #126

Closed olisnr closed 11 months ago

olisnr commented 1 year ago

i would like to plot different simulations in the same sheet, like in QUCS. to setup different simulation seems easy via the TCL-commands, but i dont see a way how to bind the .raw-files to a plot-window. is this possible in the moment?

StefanSchippers commented 1 year ago

No this is not possible at the moment. You can load different raw files in additional xschem tabs. I want to enable different raw file for each waveform, so you can show the same signal from different raw files in the same graph. This will be done after 3.4.4 release.

olisnr commented 1 year ago

thanks

StefanSchippers commented 11 months ago

A first improvement is now done. Xschem already allowed to read multiple simulation runs from the same raw file, for example a bunch of transient simulations each with a different VCC value. However choosing the run to display in the graph was not flexible. Either display all runs overlayed for all signals in the graph or display a specified run for all signals in the graph. Now each signal can optionally indicate a specific run with the syntax: node%n where n is an integer (starting from 0) indicating which run to display for node. This allows for example to have different runs of the same node in the same graph, like: node%2 node%4 node%13. See an example here.

In general you can write a string in the form: "alias; node % n" so you will display a better description of the node (instead of node % n)

1

I think a next improvement that has yet to be done is to associate a different raw file to a graph, so you can have more graphs each referring to a different raw file (and each raw file as described here may contain multiple runs of the same simulation type).

olisnr commented 11 months ago

yes, thats also very nice. when i did some temp-sweeps normally i had to mark the lowest temperature with different step-spacing, like -40 -41 -20 0 20 40 60 80 100 120...

StefanSchippers commented 11 months ago

Here is an example with raw file loading pushed to the limit. 4 raw files loaded, OP (values annotated in schematic), tran, dc, ac. Each analysis done on 3 different bias currents.

Each graph may now specify a different raw file. Each raw file may contain multiple runs (of the same analysis). Need to write some documentation and do a lot of testing. 1

olisnr commented 11 months ago

You are a hero! i will never use LTspice again!