Plot Definition and 658 Threads

How can I construct a contour plot in Mathematica for Consider the quasi-linear 1-D wave equation $$ \frac{\partial\rho}{\partial t} + 2\rho\frac{\partial\rho}{\partial x} = 0 $$ with the piecewise constant initial conditions When $x_0 = \pm 1$ $$ \rho(x,0) = \begin{cases} 4, & x < -x_0\\ 3, &...

Hi, I'm trying to write a short code in Mathematica that can generate random real numbers in - say 5 secs, and then plot this against any specified range I want. An additional complexity is that the function I'm generating the random numbers for is embedded in an integral. Here's an example...

Hello everyone, I have an implicit equation: -155.034 x^4 ×sin(377 t) = 0.0524166 x^6 × cos^{1.414}(-377t)-(0.0581964+0.0442696 i) x ×cos^4(377 t)+7.09332 cos^5(377 t) I would like to create a plot of this function using Mathematica, but I am not very proficient with this software, and...

Homework Statement Homework Equations Unsure, maybe v2-v1/t2-t1?The Attempt at a Solution I assumed taking the difference between the final point in the graph and the first one and got 1.53m/s2 as an answer, but I'm not sure at all. Should i take the differences between all the gears and then...

What does the "Centroid" of area under Rate vs Time plot represent? Does the 'centroid' of the area under a rate vs time plot represent anything? I have a bunch of rate vs time plots and was trying to think of a way to compare them, other than just cumulative volume which is area under the...

Can someone please tell me how I can plot the magnitude and phase response of this transfer function on wolfram alpha as I don't have Matlab: H(s) = -(2.1953*10^12)/(66600*((j*ω)^2)+808823539.4*(j*ω)+2.1626*10^12) A link to the output would be very useful also, thanks heaps.

Can Excel plot graph? If not, is there any free software to plot tables of numbers from Excel to XY graph.( just common graph)?

Hi, I need to plot a vector field 2x,2y,0 which is the gradient of the function x^2+y^2. I need to plot it only in some interesting points (points on the paraboloid x^2+y^2). So I tried something like a=Table[{{x,y,x^2+y^2},{2x,2y,0}},{x,-2,2,0.5},{y,-2,2,0.5}] ListVectorPlot3D[a] It...

Ok, so I'm trying to plot the unit circle using the chebyvhev metric, which should give me a square. I am trying this in MATLAB, using the 'pdist' and 'cmdscale' functions. My uber-complex code is the following: clc;clf;clear all; boundaryPlot=1.5; % Euclidean unit circle for i=1:360...

Homework Statement http://img832.imageshack.us/img832/7517/captureax.jpg According to the solution, the cutoff frequencies are 1, 20, 80, 500 and 8000. I don't understand how to get those answers by inspecting the plot. Homework Equations None The Attempt at a Solution I think the...

Homework Statement What is the transfer function described by this bode plot: http://img96.imageshack.us/img96/4775/capturegib.jpg *The answer is 3s, but I don't know where it comes from. Homework Equations None The Attempt at a Solution Correct me if I am wrong. A bode plot is a...

hi Guys, can anyone suggest me some software by which i can plot IV curve for solar panels by just feeding in open circuit voltage, short circuit current, max power, max current and voltage, efficiency.

Hi,I have vector valued function u=(u1(x,y,z),u2(x,y,z),u3(x,y,z)) and I want to plot this function in mathematica.how can I do this? I used Plot3D command but this doesn't look correct.

Hi there, First post, so be gentle. I'm currently doing a project on Kerr black holes, part of which is based on a project in Edwin F. Taylor's book "Exploring Black Holes" (the chapter is found here) as well as some of Hartle's book (chapter 15). Part of my project, and as a way of better...

1) I solved 9 coupled non linear differential equation and Mathematica give me the result like this. [FONT="Courier New"]{{y1[t]->InterpolatingFunction[{{0.001,0.01}},<>][t], y2[t]->InterpolatingFunction[{{0.001,0.01}},<>][t], y3[t]->InterpolatingFunction[{{0.001,0.01}},<>][t]...

Hi all Please help me with this question, thanks a lot. My attempt on this question is that i can calculate the damping ratio from the magnitude diagram, approximately 0.16 I can't do more than that, please help. I will be grateful even if you pointing me a direction solving this. cheers

Absolutely Stunning Plot of a "Random" Sequence (Picture Included)--Need Explanation So I created 10000 waves of varying heights, 50% of the waves were 2 feet, 30% 1 foot, 15% 3 feet, 4% 4 feet, and 1% 5 feet tall. I generated 10000 "random" numbers with the statement "=Rand()" (this generates...

Hi all. I'd like to ask you a question. I need to find an equation as to plot the frequency response of an SML photodiode in the MATLAB environment. Can you help me? Thanks in advance for your reply. Regards, Steven

Hi everybody, I have a problem with this equation: it represents the motion of a gas in a duct with friction (Fanno flow). I need to plot this function in a T-s plot, do you have any ideas? the Mach number changes along the curve... R=constant S2-S1=R*(M2-1)*log(T2/T1)$

hey guys, I came across a research paper stating to numerically integrate the following equation. 2/3 a^2 b''[a] + (1 - w[a]) a b'[a] - (1 + w[a]) (1 - 3 c w[a]) b[a] A Boundary condition is given b'[0.0001]=0 Where; w[a_] := 2*a^(3*(1 + c))/(1 + 2*a^(3*(1 + c))); (c=1) (c is a...

Code: mu12=5; mu123=20/21; z1=1:15; z2=-10:0.05:10; counter=1; index=1; count=1; indexer=1; m=1; n=1; for l=1:1:15; for p=1:1:401; x=(sqrt(mu12)/10)*z1(n)+z2/(sqrt(mu123)); y=(-(sqrt(mu12)/10)*z1(n))+(z2/(sqrt(mu123))); z=1:401; z(indexer)=z1(n)/sqrt(mu12)...

Hey guys, I'm using Mathematica to plot some graphs and I'm having a bit of a hard time. First I have to solve the following equation, 2/3 a^2 b''[a] + (1 - w[a]) a b'[a] - (1 + w[a]) (1 - 3 c w[a]) b[a] Boundary condition b'[0.0001]=0 Where; w[a_] := 2*a^(3*(1 + c))/(1 +...

Hey guys, I'm using Mathematica to plot some graphs and I'm having a bit of a hard time. First I have to solve the following equation, 2/3 a^2 b''[a] + (1 - w[a]) a b'[a] - (1 + w[a]) (1 - 3 c w[a]) b[a] Boundary condition b'[0.0001]=0 Where; w[a_] := 2*a^(3*(1 + c))/(1 +...

Hi, I wrote some code on a computer at school. dim = 50; Ediff = ConstantArray[0, {dim, dim}]; \[Lambda] = .5; steps = 10; Ediff = ConstantArray[0, {dim, dim}]; L = 1; For[xs = 1, xs <= dim, xs++, For[ys = 1, ys <= dim, ys++, Ediff[[xs, ys]] = Ediff[[xs, ys]] +...

Hi, I really need some help here. Right now I am plotting points on a 3D Scatter plot chart in Mathematica. I want to assign each of these points with a value which will be the label. Basically each point has 4 variable in the parameter. Its x,y,z cartesian coordinate position and the last...

Homework Statement I have to plot the following complex numbers into the complex plane: X_C=0-1350i X_L=0+980i R_L=100+0i

Hi all I am novice MATLAB programmer, and I need alittle help with plotting points, given in a txt. file. I have a text file containing 56 points for 40 pictures. I've loaded the txt file by "load -ASCII nameofthefile.TXT" - and thereby created a matrix <112x40 double> the first 56 rows...

Hi, I have a matrix for instance as follow: A=[0.087 11.43 17.14 22.86 28.57 34.29 40.00 45.72 51.43 57.15 0.174 5.671 8.506 11.34 14.17 17.01 19.84 22.68 25.52 28.35 0.261 3.732 5.598 7.464 9.330 11.19 13.06 14.92 16.79 18.66 0.349 2.747...

I'm looking for a function to plot things in 3D using cylindrical coordinates but apparently Mathematica doesn't have one?

How do u plot a x2,x3 graph? How do u do so? for example i have a locus equation and how do i plot it on the graph paper?? i don't know if i already miss it at school or what.. Harris

For a transfer function of G(s) = 100 / (s(s+5)), I'm having trouble finding the initial magnitude in dB. It's a type 1 system. If it was a type 0 system with only (s+5) in the denominator, the initial magnitude would be 20log(nominator/denominator) where s is an element of 0, and would decrease...

I have a set of measured data. I need to plot this in MATLAB and show two graphs in one plot. Data for first graph is : [0.35,0],[0.4,130],[0.45,400],[0.5,0.11],[0.55,34] and so on. Second graph is a function. So, how to plot sequence of data in matlab? Which command should I use?

hello guys, I have a CSV file with hyuge set of data devided into 3 cols. Y position X position and corresponding intensity values. I want to plot the image , my thesis is laser- microscopy. so a 2D plot ( density plot ) based on these values. The following is what I have tried so...

Hi Friends Can anyone help me with m-file for the subject below I have an Excel data sheet Which give Thickness of several pipes on 5 Different heights and I want to plot each bar is for one pipe with 5 values in 5 Different heights and give A different color for Thickness range example my...

Hi. Let's say there is a need to recreate a primitive plot like http://img27.imageshack.us/img27/6001/graz.png Surely I can Photoshop it, I can even generate it using Mathcad or such, but pictures look awkward when imported into documents... I dare to say I want them scalable and...

Homework Statement I have the transfer function: for the circuit: The component values are know, and are: R1 = 47kΩ R2 = 4K7Ω C = 10nF Homework Equations The Attempt at a Solution I have derivied the transfer function but have become stuck on plotting the bode plot. I understand...

Homework Statement I have for the attached circuit measured the amplitude and phase response, but the question I have to answer is too theoretically, derive, similar results and then compare the two methods. It is suggested to figure out the transfer function and plot the magnitude and phase...

I have some experimental data of a simple RC circuit, which I measured in fixed time intervals the current through an microamperimeter, and now I need to make an i(t) × t graph, with the vertical axis on a logarithmic scale (so my points fall into a 'straight' line), and then I need to find the...

Hi everyone, it has been a while since I used MATLAB, and I find myself in need of something that I hope is rather simple. I am making a surface plot of a function that is a little odd. To plot said function I would normally use meshgrid or something, but that will not work thanks to my...

What is the difference between second order zero bode plot and second order pole bode plot?

Hi, I'm new here. I did some research plotting the ODE of y'=3+2y without having x shows up in the equation. I can't figure it out, why the calculator does plot a harder equation but not a simple one? I can get the slope field with an equation that has an x in it. However, without x, my...

Homework Statement This isn't a homework question but this thing is disturbing from a long time. I attended a class on Arrhenius equation and its plots. One of the plots is disturbing me from long which is the plot between k vs T. Arrhenius equation:- k=Ae^{-\frac{E_a}{RT}} k->Rate constant...

Hello with gnuplot I need to have 2d contour plot from a file (say ss.dat) with three column, first and secend columns are X and Y respectively and the third column is magnitude (I need to have this magnitude with labels on it in 2d plot). Thanks in advance Hamid

anyone can help me to plot a point. r = Plot[Sin[j], {j, 0, Pi}]; what i am doing is i use FindMaximum first to know the point of maximum. FindMaximum[Sin[j], {j, Pi}] then i manually key in the x,y coordinate from the search. onedot = ListPlot[{{1.5707963267948966, 1}}...

Heres the question: http://img215.imageshack.us/img215/1185/screenshot5xq.png Kinetics is probably my weakest area in chemistry so I'm struggling. To find the shelf life, I need to use the Arrhenius equation but I don't know the activation energy Ea or the A constant. So I converted 2 those...

what are the equations used for pressure distribution in solid work when analyzing of an airfoil

I am trying to plot the following function: \sigma(r, \phi) = \frac{3r^2}{\sqrt{1 - r^2}} e^{i(2 \phi - \omega t)} where \sigma is a surface density, r is radius, and \phi is azimuthal angle. It is supposed to yield a "bar shape" for a galactic disk, but I'm not sure how to go about...

I have a function of two variables, f(a,b). I want to create a series of 2D plots (on the same plot) of f(a,b) vs a, for a=1 to 10, for a set of discrete values of b (e.g. b=10,20,50,100). Is there a simple way to do this? Plot3D works, but I cannot find how to do it in 2D. DN

Hi all, on a current homework I have been given a transfer function and asked to draw the straight-line (asymptotic) magnitude (dB) and phase (degrees) Bode plot. I first learned Bode plots roughly a year ago, and while being on spring break and my notebook from last year is at school, I'm...

Hi... I have to measure the end point energy of a beta minus particle being emitted from a Sr-90 radioactive source. Part of this is plotting a Kurie plot. I am using a pulse height analyser (PHA) to get the beta spectrum (which counts how many beta particles are detected N,on the y-axis and...