Plotting Definition and 518 Threads

Hello, I am trying to store the results in the form of an array every time the code goes through a loop. This is what my code looks like: for j = 1:100 for i= 1:100 if S(i)==0 if rand < T S(i)= 1; t_inf(i) = j; end...

Homework Statement I'm supposed to sketch the vector field and verify that all the vectors of the following equation have the same length.Homework Equations G(x,y) = \frac{-iy + jx}{\sqrt{x^2+y^2}}The Attempt at a Solution If I start plugging in numbers, for example the point (1,1) into...

I am importing data as a .dat file into Mathematica and making a list plot. I need to know: a)How to sort the words out of my data? I used to use AllNumeric but that went away with version 6 b)How to switch the axis on my graph? My data is coming in as a pair sequence {1#`,2#`} but I need it...

Homework Statement Hi, so the initial problem was: given \left.\frac{d^{2}u}{dt^{2}} = \frac{d^{2}u}{dx^{2}}} \left.-\infty \leq x \leq \infty \left.u(x,0)=\frac{x}{1+x^{3}} , \frac{du}{dt}(x,0) = 0 Solve the PDE(did this part already) and plot the solution for -20 < x <20 and t =...

Hi, I want to use mathemiatica to predict the spectrum of compounds with different conformers. The input consists of 4 values: frequency (of each vibration and every conformer), Intensity, Polarizability and total energy (of the conformer). I now want to plot the frequency vs the Intensity. 1...

Hey. Is it possible to plot a line in 3D from one point to another? The source of the points is a list.

Homework Statement Plot the phase plane of: y(t) = e-6t(2 1) + e-3t(1 -1) Homework Equations The Attempt at a Solution I know it's a sink because \lambda_2 < \lambda_1 < 0. http://img35.imageshack.us/img35/8108/sink.th.jpg but the phase plane in the answer is slanted to...

I will be making a C++ program for graphical representation of data. The user will import data about for example 4 different objects (some proteins or cells) and the program will plot correlation functions, linear regressions, maps (according to some generalised distance) for these objects. The...

I am in real need for a graphical application with 3d plotting capabilities. I need to plot some particles given their space coordinate. This has been well managed using VMD. But i am clueless how to plot associated velocity vector with particles. So basicall i am looking for to plot velocity...

Hey everyone, I have a quantum mechanics/matlab issue. I'm trying to plot the Transmission Coefficient T(E) of a double-potential barrier with barrier width 3nm and spacing 9nm, potential V = 0.5eV and sweeping energy from 0 to 1eV. Using the cascading matrix method where, given a matrix M of...

Hi, I have generated 1000 data points. I have assigned them a class (1 or 0) depending if they are above or below a decision boundary. I want to plot the data on a graph with the class 1 data points in one colour and the class 0 data points in another. any ideasa how I can do this...

Hi, I have generated 1000 data points. I have assigned them a class (1 or 0) depending if they are above or below a decision boundary. I want to plot the data on a graph with the class 1 data points in one colour and the class 0 data points in another. any ideasa how I can do this...

How would you plot the orbits of planets? I know how to calculate velocity and all the other aspects of an obit but I don’t know how to plot elliptical orbits. (This is not homework)

i am learning MATLAB, but have not yet learned anything do do with graphing, but need a program that can plot x.y.z graphs for my calculus work, can someone please help me plot 3d graphs on MATLAB, for example z=x2+2x+y2-y how can i input x,y,z so that MATLAB will give me the surface...

I am new to Matlab and i need to plot a function. However, using y=x as an example it always comes up saying that x is not defined. How do i plot the function without specifying a specific value for x? Graphing y=x is not my real problem. I am used to using TI-83/4 graphics calculators and...

So: we did an experiment to see if sow bugs liked a dry or a moist environment. We put them in a choice chamber and let them choose between a dry environment and a humid environment. We also did a separate control where we gave them the choice between two identical dry environments. My...

Homework Statement plot using matlab: g = 3 cos (10pi t) convolved with 4 impulse (t +0.1) Homework Equations The Attempt at a Solution x = -10:0.1:10; u = 3*cos (10*pi*x); v = 4*dirac(x + 1./10); y = conv (u,v); plot (x,y); but i keep getting this error: Error using ==>...

Hi, Can anyone point me to a good equation graphing program that has zooming and x-y readouts according to crosshair positioning (for estimating values). I have Mathematica 5 which I use for most graphing but it lacks the above mentioned features for simple x-y plotting and graphical...

Trying to plot the set of complex numbers \{z \in C | |z - i| \leq |z-1|\} on the complex plane. I've tried by hand a few values for z, such as z = 1 - 2i, z = 2 + 2i, but the inequality isn't true. How can I determine which values of z are true for this inequality?

How do i plot an output response curve when input unit steps are (undamped natural frequency is normalised to 1): damping ration = 0, 0.1, 0.4,0.6,0.8,0.9 1 and 2 1) how do i plot a 2d plot for all curves on same graph. Time scale 0 - 10, steps of 0.2 seconds. 2) How do i make use of a 'for...

Hi everyone, I believe the term I am looking for is phase diagram. For a oscillating system it is a graph where displacement is on the x-axis and velocity is on the y-axis. My first question is what is the proper name for this type of graph? I had the following simple PDE: ay" + by' + cy...

I'd like to compare some models of mine against results from WMAP. Is there anywhere I can get the data, l(l+1) Cl / 2pi as a function of l? I see plenty of images of the TT, TE power spectra with error bars on them from WMAP, but can't seem to find the data. Ideally I'd like to plot my models...

I am trying to solve a system of differential equations and plot solution curves. The differential equations have parameters. I would like to write a loop for these parameters and have the solution curves plot. Here is my code for the solving / plotting. The parameters I want to change...

this is quite a simple problem,what i am trying to do is plot a line between any two points on my image, i can plot horizontal lines fine. below is the part of my code to for the line... int x1 = 92, y1 = 35, x2 = 150, y2 = 55; //line between two points for (x = x1; x <= x2; x++)...

Homework Statement I have 4 rows of data for a single entity in excel file Homework Equations i want to plot all the 4 rows in a single figure in matlab The Attempt at a Solution i know how to import the excel data but can find a figure or a function where i can plot these 4 rows in...

Hi, I have some generated pseudopotentials, which I have taken them from different sources, one of them octopus. I need to plot the pseudos, can anyone let me know how to do it? Regards, Sara

Hi, I have some generated pseudopotentials, which I have taken them from different sources, one of them octopus. I need to plot the pseudos, can anyone let me know how to do it? Regards, Sara

To the moderator: I'm not sure if this should go here or in the Computational Physics forum. Please shift it there if you think that's the appropriate place for it. Hi everyone Merry Christmas! I'm writing a computer program in C, to explicitly compute the band structures for a 1D...

There's a problem I've been working on for a few days that I can't seem to resolve: There is a model train going around a set track with a 2-D accelerometer mounted along the axis of the train. The accelerometer provides the current x/y acceleration values at a frequency of about once...

Homework Statement The original problem was x'=(-2 1; 1 -2)*x and I needed to find two linearly independent solutions. Homework Equations The Attempt at a Solution I found that x1=(1;1)e^(-t) and x2=(1;-1)e^(-3t). Now I am trying to plot a vector field of this. Is there an easy way...

Does anyone know where I could find some information about solving a pendulum position. What I mean is a swinging pendulum and the position. The position would be the spot on the ground that a sun directly above would cast. I don't really know where to start other then the pythagorean...

There are plenty of interesting plots that use various ways to plot the integer occurrences of a^2 + b^2 = c^2 such as making ordered pairs (a,b) and doing that for all such that a^2 + b^2 < [a really big number] and very interesting patterns are noted. My thought is plotting a polar analog...

I found this image on wikipedia: http://en.wikipedia.org/wiki/Image:Mandel_zoom_00_mandelbrot_set.jpg and i have seen this image like many times, but i have never understood as to how it is plotted. How is the value of the color decided? Plus, if it is a complex plane, how are the axes...

I've been doing some experimentation with plotting parametrized surfaces in maple, and I would like to get some ideas for more things I could do. I'm not very clever at figuring out new parametrizations, but I'd like to do some things with seashells. The plots I'm coming up with are very...

So I have this equation: T=(cos(k2*a)^2+(1/4)*(r^\ast+\frac{1}{r^\ast})*sin(k2*a)*sin(k2^\ast*a))^{-1} where r=k2/k1; r^\ast=\frac{k2^\ast}{k1}; k2^\ast is the complex conjugate of k2 also k2=\frac{\sqrt{2*m*(E-V)}}{\hbar} and k1=\frac{\sqrt{2*m*E}}{\hbar} m,\hbar,a are all...

Homework Statement Using the local minima, local maxima and points of inflection of the following function, plot the graph: f(x) = 9x4-11x3+3x2+1 The Attempt at a Solution f(x) = 9x4-11x3+3x2+1 f ' (x) = 36x3-33x2+6x = 3x(12x2-11x+2) = 3x(3x-2)(4x-1) therefore we have x...

I'm trying to plot a function in terms of Y, but it always treats y as if it were x. Is there anyway I could "Turn" the graph 90 degrees? Thanks

I have a table of time values and speed values, that I want to plot in Mathematica. WHats the easiest way to plots these one vs the other? Should I turn them into Lists first? :S

The <Diamond> + F1 menu allows me to plot only Y= graphs. How do I plot a graph of say, y^2=x+4 ? You cannot plot y=Root(x+4) because you would miss the negative part of y. If this is the only way to plot such graphs, how to you tell TI to plot a y= +/- Root(x+4) ? Thanks.

How to plot this vector field on a graph \stackrel{}{\rightarrow} V=(xi+yj+zk)/\sqrt{}(x^2+y^2+z^2)

How can I plot the graph for this: a+b=c and b^{2}-4ac>0

OK, say we have the border of a country represented by a polygon, how do we obtain a new border which at every point has it's nearest point to the country at exactly say 10 miles from it? Is there an algorithm to do this or is it highly computational? It's not as simple as it first seems.

I am doing an experiment on the pendulum, and i wanted to do something on the damping, i understand a little as i have done some reading on it, the picture attached show the working i have done, i have reached a second order DE and i know little about this. So my question is, can you plot a...

Hi, I wish to plot a 3d surface but as of now have not been able to! I wish to plot z=f(x,y)=[x²+y²-1]^1/2 restricted to the domain: dom(f) = {(x,y)|=1 ≤ x² + y² ≤5} Any step by step instructions would be greatly appreciated! Thanks in advance!

How could I use Mathematica to give me a plot of the locus of z such that \arg(\frac{z-2}{z+5}) = \frac{\pi}{4} ? I've tried using ContourPlot and typing ContourPlot[Arg[(x - 2 + I)/((x + 5) + I)] == (\[Pi]/4), {x, -5, 5}, {y, -5, 5}] but it just gives me two vertical lines. I think...

Didn't know where to put this though its also a math problem.. I have to plot the vector in 3d using matlab v1=[8;2;-6] v2=[12;3;-9] v1 = 8 2 -6 v2 = 12 3 -9 v2= (1.5) * v1 Now I used...quiver3(v1,v2) It gives me the line though I...

Hi guys... Here's the problem. I want to plot a Temperature T(x,y) profile across a plate with dimensions L x W. I'm using finite difference method so the temperature are only known at the nodes I choose, if I make n nodes across the Length and m nodes across the Width I will end up with an...

I'm going through "The Chaos Cookbook" right now, a fairly old book on chaos programming. A bit too old I'm afraid, all the programs are written in Pascal and Basic. I had been using Excel (well, Open Office Calc) to do the iterations and graphing, but I feel that the size of the programs are...

In my GUI I'm plotting a fairly large amount of data in an axes, and then plotting a horizontal line overtop that the user can control the vertical position of. Is there a way I can have the first plotted graph (the large amount of data) always be behind the line I am plotting overtop, and have...

I want to plot a function in 3D such that the saturation of the color at any point is given by: S = f(x, y, z) so, when f(x, y, z) is maximum, i want the color at (x, y, z) to be say saturated Red [rgb(255, 255, 0)] and when it is minimum, i want the color to be white. How do i do...