# User Portlet David Keith
Discussions
In my opinion, this is a weakness of the notebook interface, which I forgive because of its many virtues. I use two methods for processing sets of data. The first is easy for simple applications. In this case I develop the calculation in multiple...
Thanks, Sompob. I have not tried that. Where are these preferences found?
In the File menu there is an opportunity to open a file as a package using File/New/Package. That opens a specialized GUI with the option to run and debug code. When we look up documentation on this here is what we get: ![help entry] Does...
If you want the y-axis linear in dB, then convert gain to dB using the appropriate function and plot the y-axis using a linear scale. For power gain, the gain in dB is 10 Log10(gain). (For voltage or current gain, 20 Log10(gain).) For most control...
You can use the option "BoxRatios->Automatic" for 3D plots, "AspectRatio->Automatic" for 2D plots. These will give axes that have the same as-drawn scale.
Hi Marco, I get the same behavior on Win 7: 11.2.0 for Microsoft Windows (64-bit) (September 11, 2017)
In the top menu, use "Evaluation->Evaluate Notebook."
Nice. If these were cars on a US freeway, one of them would be frantically changing lanes back and forth in an attempt to always travel in the fastest lane, which would of course bring an end to the continuous progress.
NDSolve would return a rule which could be used like this. But in this case you are using NDSolveValue, which returns the solution as an Interpolating Function. So this is for direct use. This has not provided a rule for u, or even a value for u. All...
Can you generate a simple example that displays the problem? eqs = {x'[t] == -y[t], y'[t] == -x[t], x == 1, y == 0}; sol = NDSolveValue[eqs, {x[t], y[t]}, {t, 0, 10}]; Plot[sol, {t, 0, 10}] ![enter image...