Is it Possible to Create a Logarithmic Slider Control?
- To: mathgroup at smc.vnet.net
- Subject: [mg117336] Is it Possible to Create a Logarithmic Slider Control?
- From: Morgan Sutherland <skiptracer at gmail.com>
- Date: Tue, 15 Mar 2011 06:06:41 -0500 (EST)
- Reply-to: skiptracer at gmail.com
Greetings List, *Question also posted here: * http://stackoverflow.com/questions/5307244/logarithmic-slider-control-in-mathematica I'm making a small interface for calculating voltage dividers in Mathematica. I have two sliders (z1 & z2) that represent the resistor values and a couple of sliders to represent Vin as a sinusoid. The issue is that the range of available resistor values (in the real world) is roughly logarithmic on {r, 100, 1,000,000}. If I set my slider range to r, however, it's impractical to select common low resistor values in approx. {100, 10,000}. Is it possible to create a slider that sweeps through a logarithmic range? Thanks! Manipulate[ Grid[{{Plot[(VinR*Cos[t] + VinC), {t, -3, 9}, PlotRange -> {-1, VMax}, AxesLabel -> {t, Vin}]}, {Plot[ z2/(z1 + z2)*(VinR*Cos[t] + VinC), {t, -3, 9}, PlotRange -> {-1, VMax}, AxesLabel -> {t, Vout}]}}, ItemSize -> 20], {{z1, 10000}, 10, 1000000, 10}, {z1}, {{z2, 10000}, 10, 1000000}, {z2}, Delimiter, {{VinR, 2.5}, 0, 5}, {VinR}, {{VinC, 2}, -VMax, VMax}, {VinC}]