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Hi Morten, thank you so much for the instruction and providing the download place. I really appreciate it! Allen

IRstuff, thank you so much!

Tool(software) of reading data from curves I once used a very small but useful software (tool), which can read and save the data from a figure just by clicking the mouse. It's very useful when people want to read out the values from certain curves in a figure of a technical paper. Otherwise...

I know how to do it in hspice, but I don't know how to do it in Spice3f5. in hspice, we can do .param g=1.0 ... .ac lin 1 100K 101K sweep g lin 200 -2.0 2.0 but in spice3, .param and sweep can not be used. So if you know how to do it in spice3f5, please help. Thank you very much!

it's not homework, I promise!

Hi, I'm wondering how to do the spice3 simulation to get capacitance(for example cgg, cgd, cgs) versus Vg as Vg changes from -2 to 2V? Freq. maybe 1MHz. Can anybody provide a simple spice3 netlist? Thank you very much! Allen

Thanks a lot, Jockek, it works!

Question: How to draw a surface in matlab as Y is not fixed? X = [1, 2, 3, 4, 5] As x=1, Y=[4.8, 4.9, 5.0] As x=2, Y=[4.6, 4.8,5.0] As x=3, Y=[4.3, 4.7,5.0] As x=4, Y=[4, 4.5, 5.0] As x=5, Y=[3.8,4.4,5.0] So here Y always has 3 elements, but the range of Y is changing as x increases. Z is...

How could I plot a 3d surface graph where both x and y are functions of x? I could not use surf(x,y,z) as usual. For example, to plot a plane passing through 3 points (1,0,0), (0,1,0) and (0,0,1), how could I do it? Thanks a lot!