Can I use a variable as interpolation point in the value function?

Dear maaz2020,

If you tried this on the Calculator, did you happen to make sure the context of the calculator is pointing to your simulation directory results? I am concerned the Calculator does not know the value of VAR("myvar") and hence cannot perform the interpolation. You might be able to verify this in the Calculator by entering VAR("myvar") to verify that it has the expected value.

Otherwise, if my comments do not apply to your context, might you provide a bit more information on the specific steps you are using and any messages in your CIW indicating the error?

Shawn

My guess is that this is something to do with the VAR() returning a waveform, but I've not done the experiments to determine which versions this does or doesn't work in. It really needs some more info to help guide any investigation:

1. Which IC sub-version are you using (Help->About tells you this)?
2. Which ADE are you using? L? XL? Explorer? Assembler?
3. Is this a single simulation or are. you performing sweeps?

Rather than doing a general hunt around and checking across lots of versions to identify what your problem might be, some specific information tends to focus the mind (and the time) of anyone investigating this.

Andrew

@ Shawn: 

entering VAR("myvar") in the calculator returns the expected value

@ Andrew:

1. ICADVM18.1
2. ADE XL, Maestro view
3. initially ran a DC sweep; I have re-ran a transient and looking for a value in time:

Dear maaz2020,

maaz2020 said:

entering VAR("myvar") in the calculator returns the expected value

@ Andrew:

1. ICADVM18.1
2. ADE XL, Maestro view
3. initially ran a DC sweep; I have re-ran a transient and looking for a value in time:

Thank you for the added details!

Looking at the CIW error you posted, it appears the syntax of your leafValue() expression is missing arguments or parentheses...did you clip the CIW error?

I just tried an example value() function on a waveform from a simulation I performed in Assembler using a variable "sel_tdel" and printed the result to a table. Figure 1 suggests the use of a variable with your syntax evaluates properly. Hence, I am wondering if the issue is with your leafValue() syntax...any thoughts maaz2020?

I am using:

$ virtuoso -W
sub-version  ICADVM20.1-64b.500.16
$

Shawn

Figure 1

I got it to work now; this is what happened:

when you send a waveform from ViVA graph to the calculator attaches leafValue(): if you try to elaborate the value expression with the VAR("tstrobe") directly from the calculator it returns the error (first figure).

I've removed the leafValue() from the expression in the buffer, and now it works, from within the calculator (second figure).

Eventually, when you send the buffer expression to ADE outputs, it removes the leafValue() anyway in ADE, so it will work regardless (last figure - I didn't tried that step before)