Recent content by darkfall13

I think I found it, using "caxis([minvalue maxvalue])" before colorbar seems to be what I'm looking for.

I'm doing some plotting in Matlab where I'm using a third variable of data as a color. For example I have vectors x and y with some sort of values plotted as a scatter plot. I can color the points according to a third vector z by turning on colormap and colorbar (scatter(X,Y,S,C) and use z in...

Wow as much as I thought that didn't help I didn't realize the scatter function can take a vector for color values, and it automatically creates equal transitions for the spectrum. Thank you so much!

I've been thinking a bit on this and I can see I'll need some sort of variable to define the stepping through different color shades, and to define how many shades I'll be wanting. I see the regular "colorbar" command seems to be the right color scheme. But how do I apply to the individual...

I have been tasked with making a plot with a couple variables of available data. I'm to make a normal 2D scatter plot of the data with respect to 2 of the variables given, easy enough. But then I'm supposed to color (from red to blue) each point according to a 3rd variable, which is a derivative...

Ha thank you for the catch, I haven't been completely here lately. \cot \theta = \frac{-x}{2a} \theta \left( \textbf{x} \right) = \cot^{-1} \left( \frac{-x}{2a} \right) = \cot^{-1} \left( - \frac{2a \sqrt{1-\frac{y}{a} } }{2a} \right) = - \cot^{-1} \left( \sqrt{1-y/a} \right) = \theta...

Homework Statement A plane electromagnetic wave refracts in a nonuniform medium. The ray trajectory is known, y = a \left[ 1 - \left( \frac{x}{2a} \right)^2 \right] where a=const. a) Plot y(x) b) From the slope of the curve find the angle \theta \left( y \right) which the...

OK thank you, I'll have to devise a new naming scheme for the files I need to create, and isvarname should come in handy thank you.

That does help immensely thank you.

Homework Statement A Ti-sapphire femtosecond laser (1fs= 10^-15s, λ≈0.8μm) has an intensity of 1022 W/cm2 when focused to a spot of 1μm radius. What is the energy of the laser pulse? What is the peak magnetic induction B in Tesla and the electric field in V/m? What is the wave pressure in...

I'm having a weird problem in my copy of MATLAB at work (6.5.1.199709 Release 13 SP1). Originally I was having a problem with naming a file "any.m" as it wouldn't run. So I named it anyd.m and no problem afterward and I just assumed that word was some sort of script or something already defined...

I'm silly, I think I got it started: \vec{\nabla} \times \vec{E} = - \frac{ \partial \vec{B} }{\partial t} = + B_0 \omega \sin(\omega t) \hat{z} \oint_C \vec{E} \cdot d\vec{s} = \oint_C E_\phi \hat{\phi} \cdot \rho d\phi \hat{\phi} = 2 \pi \rho E_\phi = \int_S (\vec{\nabla} \times \vec{E})...

Homework Statement A very thin conducting disc of radius a and conductivity \sigma lies in the x-y plane with the origin at its center. A spatially uniform induction is present and given by B=B_0 cos\(\omega t \)\hat{z}. Find the induced current density \vec{J} in the disc. Homework...

Hello everyone, I have no clue where this question should go as I do not have the slightest insight as to what this even is. Background, I'm doing a project over the summer with my professor studying magnetic fields of Saturn. One of the variables I'm to record is K(i,e,u)rth Phase, noted as...

Generally high voltage comes with quite a bit of current (but also used to circumvent this: the large power lines carry high voltage with low current to try to overcome resistance over vast distances). But the part of this equation that can kill you is the current. This is also why there's the...