# User Portlet

Neil Singer
Discussions
Maciej, You can also use Map[] by defining a function that only operates on the second item. m is a list of pairs in the form {first, second}. You create a function that returns a list of {first, Abs[second]}: Map[{#[[1]], f[#[[2]]]} &, m] ...
Use AspectRatio: GraphicsRow[ Table[GraphicsRow[{"H", 2, 3}, ImageSize -> 30 i, AspectRatio -> 1/i], {i, 1, 3}], Frame -> All] You can fine tune the ratio. ![enter image description here][1] Regards, Neil [1]:...
Reza, You can use Max: ListPlot3D[ Table[Max[ 0, -2 Ne[Pi/4] && (\[Alpha]n^2 + \[Alpha]l^2) {{0, 1}, {0, 1}}, PlotRange -> All, AxesLabel -> {Style["\!$$\*SubscriptBox[\(\[Alpha]$$, $$l$$]\)", 10, ...
Until you debug it, you might also want to return something like 0 if the code does not compute an answer to avoid an error.
Werner, You can query the imageSize of the graphic with the ResourceFunction "GraphicsInformation" and use that to set your sizes and then regenerate your graphic with the labels: Block[{size, w, pl}, Do[{size, w} = sizew; pl = ...
Jairo, I do not know the inner workings for PIDTune, however, it appears to have difficulty with the derivative for a system with such a long time delay. If you use a PI controller with some options, you get a reasonable response. For example, ...
oops, Sorry I forgot the Exp[] in the expression above. It evidently can't be integrated in closed form using existing techniques known to Mathematica. I tried Rubi and that failed as well. Regards, Neil
All zeros is one solution. If you use FindRoot you can find two more fairly easily: In[23]:= g /. \[Gamma]1 -> 0 /. \[Delta]1 -> 0 /. \[Gamma]2 -> 0 Out[23]= {0., 0., 0.} In[24]:= FindRoot[ g == 0, {{\[Gamma]1,...
What is a digital curb cut? Regards
Lance, You should not be using strings to construct expressions in Mathematica except in unusual cases. In this case you can do what you want directly without any strings. I can't understand what you want the final output to look like unless you...