Plot Definition and 658 Threads

First note that I am just learning Mat lab, and running a program created by someone else. I have a program which is displaying four differential equations on screen, all with various parameters assigned in the beginning. i.e. alpha=10; beta=0.04; gamma=0.020; etc. For...

hey pf! i am trying to plot a contour (topographic) graph the following ##f(x,y) = \frac{1}{x^2+y^2} e^{x-(x^2+y^2)^{.5}}## where ##f(x,y) = k## where ##k = .001## and doubles in size for about 8 iterations. my attempt is here: x=-3:0.25:3; y=-3:0.25:3; z=.25:.25:1; [X,Y]=meshgrid(x,y)...

How did they get the blue box? I know where they got the 0.5 inside the brackets from but not sure about the rest. The bode plot in my data book has log10(wt) as the x-axis..

hello, does anyone know which softwares are used to plot the following two figures ? I guess the two figures ae plot with different softwares. I hope someone could give me some references. Thanks.

Hello all, I am trying to plot a simple trajectory in MATlab. Here is the code I wrote, v0 = 100; theta = pi/4; t=0:0.1:20; horizontal(t)=t.*v0.*cos(theta) vertical(t)=t.*v0.*sin(theta)-4.905.*t.^2 %teacher gone missing, again, ARRRGGHHH! title('Ballistic Trajectory of a Projectile')...

Homework Statement Need a free program to plot expressions in polar coordinates. For example, I want to plot the equipotentials for an expression in polar coordinates of the potential for a dipole charge, 4q and -q separated by a distance L. Homework Equations V=kq(4/r1 - 1/r), where r12...

Hi. According to the attached article I couldn't draw fig1 with eq1 using mathematica.

Hi all, Consider the scatter plot below (example only): The bottom subplot looks like a residual plot (y-x), but it's over (1+x). I'm hoping someone can explain what this is and the benefit of it. Thanks

Hello everyone, I need to find a way to measure and plot the impedance of a set of chokes across a frequency range of 10kHz. Any ideas how I can do that? I have a frequency generator, a variable power supply and an oscilloscope with a spectrum analyzer.

On Wolfram Alpha it will offend give you a contour plot, and it has similarities to a bifurcation plot with respect to a variable and a parameter. What is the difference between a contour plot and a bifurcation diagram?

Homework Statement Homework Equations The Attempt at a Solution Hello, I am having serious problems being able to draw bode plots. At first the professor said to put everything into standard form with an (ω/ω_c)...and then there is also a table in the textbook with standard forms that don't...

Homework Statement I need some help with the following problem (it is from an old test paper). Below is the Bode plot of the open loop gain of an amplifier: A constant fraction β=0.1 of the output is fed back to the input. This feedback does not load the amplifier. Using the Bode plot...

Good morning! I have 3 log scatter plots that I want to establish smooth maximum and minimum lines. What is the usual mathematical method to do that? (Image and excel file links below.) The black lines on the scatter plot images are hand drawn. The third scatter plot is especially tricky and...

How would I estimate the transfer function for transmissibility given this plot: I am told that the data does not include phase information, but assume that the phase is 0 deg at low frequency and -180 deg at high frequency. I must provide a brief rationale for each component of the transfer...

Homework Statement Numerically integrate and plot the response of an underdamped system determined by m= 100 kg, k= 20,000 N/m, and c = 200 kg/s, subject to the initial conditions of x0 = 0.01 m and v0 = 0.1 m/s, and the applied force F(t)=150cos(5t). Then plot the exact response. Homework...

Bode Plot It's The biggest one in the entire universe! Homework Statement The question is stated at the top of the image below. Did I answer the TWO questions with this image? https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-frc3/t1/1891009_10151901549150919_346181425_n.jpg...

This is part of a lab report so not sure if the template agrees with what I am asking but basically using the Arrhenius equation in the form of ln(k)=ln(A)+(\frac{-E_a}{R})(\frac{1}{T}) I plotted a straight line graph of ln(k) vs 1/T and found the gradient to be -5525. Its the units that are...

Homework Statement Write a Matlab function to compute and plot real and reactive power consumed (or supplied) by a known impedance (the value of complex impedance should be used as the function’s input) as a function of either current or voltage (use a character: V or I as a second input) for...

Homework Statement A Nyquist (polar) plot of a standard second-order system is shown below (drawn to scale). Suppose a unit-step function is applied as the input to this system. Determine the peak percentage overshoot expected in the system output. Homework Equations The Attempt at a...

Homework Statement Plot x(t) for a damped system of natural frequency w_n= 2 rad/s and initial conditions x_0= 1 mm and v_0 = o mm/s, for the following values of the damping ratio: z= 0.01, 0.2, 0.6, 0.1, 0.4 and 0.8 Homework Equations The Attempt at a Solution I began by defining...

What is the functional form of rose petal with 6 petals? I am asked to graph this function with matlab, but it seems impossible according to my calculus textbook. According to my textbook, a rose curve can have the form r = a \cos n \theta or r = a \sin n \theta. When n is even, then there are...

Homework Statement http://imgur.com/OowiMCR As noted in the image: In the circuit below, R1=R2=10kΩ, and C=0.1μF. Plot Vout(t) if the input, Vin, is a step function of height V0 at t=0 Homework Equations Vcap=V0-Ce-t/RC The Attempt at a Solution I was hoping someone could...

In my project I basically need to plot 3D color coded surface graphs using MATLAB taking input from multiple .dat files (i have 1000 .dat files). In each file I have parameters x and y, and when I take multiple files, each having a different value of z, I can finally plot a graph. so does anyone...

Hi all, I was hoping someone could give me an overview of what a U-V vs V-J plot is and how it's used to categorise galaxies. I believe it's relates to flux observations of galaxies through different photometric band filters. So U-V is the restframe magnitude with a filter from the...

Hi all, I have a function varying in mass varible as 1000 - 1500-2000, etc, I made a list of the values of this function for these values of mass but when I plot by mathimatica by ListPlot it appears some how discerte between the points I defind not a continus graph. So any help to...

Anyone have an idea to find a first and second natural frequency from time domain and frequency domain plot resulting from an accelerometer measuring the vibration in cantilever beam ? Thanks very much :)

I am creating a plot in a for loop adding each iteration to the plot in matlab. This part works fine but after the for loop, i am trying to format the title and axis and that is clearing the plot. I can add the legend without it clearing. I also tried hold all but that did not work either. Any...

(HgAh)=ChG^mL^n (HdAm)=CmG^pL^q I need to plot (HgAh) and (HdAm) As Fuction of G( Gas flow rate) with lines of Constant L( Liquid flow rate) and discern M and P from the equations above from Log Log Graphs. I have collected a table of raw data with Various G at constant L. How do I...

Homework Statement Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ρ0 and radius a; outside the core is "rock" with constant density ρ1. Use these values for the densities: ρ0= 8.70×103 kg/m3 and ρ1= 4.10×103 kg/m3. The radius of...

Hallo all... I have a couple of plot values that I am trying to derive a formula from. The points are almost linear but not quite... Was hoping someone could shed some light on how to go about this... I have Matlab 7.1, would like to use it if at all possible... Any help would be...

Homework Statement The problem is long so I will post the whole thing but ask only for help on part C. The steady-state motion of a damped oscillator driven by an applied force F0 cos(ωt) is given by xss(t) = A cos(ωt + φ). Consider the oscillator which is released from rest at t = 0...

Can anyone help me to in this problem? I want to use DO loop in Plot order at mathematica 8, how can I do this? I want to change one variables and see the changes in other variables in the graph, and want to plot all of my graph in one Plot order. Like this. I Uploaded my file too.

How do I plot the plane x+z=0 in mathematica on the xyz plane

I have performed a small experiment to obtain the VI characteristics of a semiconductor diode using ANALOG DISCOVERY circuit design kit. I have connected the arbitrary waveform generator (function generator) to a series combination of a 1N4007 diode and a 1 kilo ohm resistor. To obtain the...

Hi Everyone, I am a new Matlab User, I am want to plot the equation y=cos(A*x) + i*sin(A*x) where A = 400*pi/340 and want to plot y and vary x from pi:0.1:pi clear all; close all; A = 400*pi/340; x = -180:0,1:180; a=cos(A*x); b=i*sin(A*x); i= imag(b); hold on; grid...

Homework Statement Plot the output voltage V0 versus time of the circuit below. Assume Vgamma=0 for the diode. Clearly mark the values on the plot for full credit Homework Equations KVL KCL The Attempt at a Solution I have uploaded mt attempt the dotted line is the input waveform...

Area problem regarding r^2=8cos(2θ) and some other curve. I don't understand how to plot this. I started off with a table of values. I get confused when θ = π/2. I thought it would give r^2 = -8. But looking at mathematica it gives a leminiscate that crosses the origin. How come? Is it...

Dear friends I plot a Contour plot from a function with mathematica, but I don't know how can I add a small box near my figure that explain which value refer to which color? I put my code below, please help me with adding colordata to my code for having reference for colors. t = 0.01...

Hello, after having done a bit of exercices on Taylor & Wheeler ( just for self-study ), I felt the need to go on a bit differently, i.e. trying to solve qualitative problems instead of quantitative ones, i.e. using a bit of diagrams ( all in all, as Susskind always suggest "when you face a...

I'm trying to use 2 color functions within one matrix plot in mathematica. Is this possible to do? For example, using a very simple matrix: test = Partition[Table[i, {i, 1, 9}], 3] I would like to make the even numbers vary in color increasing from white to red; and the odd numbers vary...

Dear friends, Over the past week, I tried to plot implicit function by mathematica but failed. I am very disappointed. Hopefully someone help me at this time. My equation is given by (see below figure): Where z0 := 6 d := 12 k := 11800 w0 := 0.025 w[z_] := sqrt[w0^2*(1 + (z/z0)^2)]...

Hi all, I would like to know if there exists any method to represent multidimensional vectors on a 2D plot so using extracting any unique features of those vectors. Can eigen values be used for such purposes like dimensional reduction. If so how ? I would like to know more about these...

I'm working on monitoring and trending the performance of a memory controller. Without getting into the technical details, I'm trying to find a good way to visualize the data I've collected in a way that will be easy for me to update when I receive new data. There are about 450 individual...

Homework Statement Hello everyone, I was trying to plot (density plot and 3d plot) Hermite Gaussian polynomials on Mathematica hoping the plot will be good enough to show patterns such as this link ...

Hey, so I have this question Figure 1 shows a short duration segment of a speech waveform that has been sampled at 16,000 samples per second. The x-axis shows sample number, while the y-axis shows amplitude. (i) From the plot, is the speech signal voiced or unvoiced? State your rea- soning...

Here is the question: I have posted a link there to this topic so the OP can see my work.

Homework Statement Given that the diodes are ideal for the circuits a) and b), plot each of their output for the input shown. Label the most positive and most negative levels. Assume CR >> THomework Equations The Attempt at a Solution I am having a really hard time understanding the role of...

Every time I think that I've seen it all, a story like this comes along. Thankfully, someone reported these two to the FBI. FBI Foils Plot To Build X-Ray Weapon

Hi,guys. I m trying to determine activation energy of donor levels . So i have measured absorption at different temperatures of my sample (mono-crystal) And I have plotted ln(optical density) vs 1/T(K). And I want to calculate activation energy useing D=D0exp(-Ea/kT) In plot above...

I have a formula for the fibonacci sequence (with 1 being the first) and I noticed that the 12th fibonacci number was 144. I thought that was a neat coincidence, so I I headed over to mathematica to see if this (and 1) were the only numbers that had this property. I was almost certain that it...