Plot Definition and 658 Threads

Homework Statement I have a bode plot with a positive phase. Homework Equations this is a MATLAB code for the thing % bode phase plot w = logspace(1, 4, 100); G = 100*(1+0.017i*w)./(1i.*w.*(1+0.05i.*w).*(1+0.0025i.*w).*(1+0.001i.*w)); fi = atand(imag(G)./real(G)); semilogx(w, fi); % x-axis...

Hi all. How to read the following plot? Thanks.

I found some Matlab code that works. However, I am not sure how to alter it for my needs. How can I make the code work for this:##N_{t+1} = \frac{(1+r)N_t}{1+rN_t}##What needs to be changed? %%% MAKES A COBWEB PLOT FOR A LOGISTIC MAP % compute trajectory a=3.0; % parameter x0=0.2...

I have attached a picture of my problem to this thread. When I plot the column vector x=[1;1] I get a straight line instead of a point, does anyone know how to fix this?

I have been monitoring the temperature of a mirror surface placed outside at night. The temperature is measured at 10s intervals and so, as you can imagine, a plot of the data for one period is quite noisy. I have therefore decided to "smooth" the data by plotting a moving average over a...

Here is the x-t plot of underdamped motion...

I have a gamma function in the form of Gamma(s-1) where s can take only positive values. How can I plot this function for different value of s using Mathematica ?

How can I put a Mathematica plot in my Latex document?

Hi all, I recently saw a very nice diagram of the morse potential on wikipedia I am curious if anyone has any suggestions as to how this diagram was made? What software package was used? In particular how the actual morse curve was plotted.

My function is; y(x,s)= 1-(cos[(s-1)arctan(x)]*gamma(s-1))/(1+x^2)^(s-1)/2 varible x will have range from 0 to 10. At one time the s value will be constant e.g. s = 3 but I want to change s for different values( is there any commands in MATLAB that will allow me to do this ?). I tried many...

Dear forum people, I just learned how to get a tight-binding dispersion for graphene: E = +- \sqrt{1+4\cos((\sqrt{3}a/2) k_x)\cos((a/2) k_y)+4\cos^2((a/2) k_y)} But i can not figure out how can I plot that. I want to plot that in the following path: K \rightarrow \Gamma \rightarrow M...

Homework Statement I have a michaelis-menten plot and I need to see if it fits the chemical rate equation. Homework Equations J=JMAX ([S] / KM + [S]) The Attempt at a Solution I can get values for the entire equation from the plot. My idea was to choose a value of J and insert...

Often, after running a model in Simulink, the graph displayed in Scope is incomplete.. ie the initial portion of the graph is missing and only a part of the final portion remains. If I open the scope window as soon as the model starts running then I can see the graph being plotted but after a...

I have the following formulae that I found: h[S_, H_, D1_] := (S*H)/D1; α[L_, D1_] := ArcTan[L/D1]; b[S_, B_, D1_, L_] := (S*B)/((D1^2 + L^2)^0.5); c[S_, B_, D1_, L_] := S*Tan[ArcCos[((D1 - B/2)^2 + (D1 + B/2)^2 + 2 L^2 - B^2)/( 2 Sqrt[(D1 - B/2)^2 + L^2] Sqrt[(D1 + B/2)^2 +...

I calculated a binocular disparity \delta of two points, see also this topic, and got the following formula: \delta = Arctan(\frac{f}{D + d}) - Arctan(\frac{e}{D}) - Arctan(\frac{a - e}{D}) + Arctan(\frac{a - f}{D + d}) The assignment now says: Choose a = 6.5 cm, D = 40 cm and e = 3.25 cm...

We had an experiment of charging and dicharging a capacitor in a RC circuit.Our instructor asked us to plot our data in a semilogarithmic paper.Then told us the formula of calculating the slope of such a curve.It was: \frac {[the vertical distance between two points measured by a...

I am learning to draw Bode Plots. I am able to figure out ωgc, ωpc, Phase Margin & Gain Margin graphically from the Bode Plot. But I was wondering if there is a way to calculate ωgc and ωpc mathematically with some formulas - how do I do this?

The potential inside of a uniformly charged sphere of radius R is given by \frac{Q}{4\pi \epsilon _{0}}\frac{1}{2R}(3-\frac{r^2}{R^2}). Please help me on how to plot this equation in Mathematica

Homework Statement The question gives a transfer function. and we are asked to put it into pole zero form and then we are asked to sketch the positions of the poles and zeros of the system on the complex plane and then sketch the impulse response corresponding to each pole. i have...

Hi, I'm having trouble plotting this data Is there a way to attach the homework assignment so that you guys can view it? Anyways, I'll type it for now: We need to determine the dissociation constant for L (ligand) and the number of L binding sites on P using a scatchard plot...

What the program needs to do is quite simple, the problem is that I lack the knowledge needed to program in matlab. I know how to program in assembly and C++ and that's about it, this would not be a problem for me if my University gave formal courses in how to use Matlab. Here is what the...

Hi, I wish to listplot a list object against a scale that is NOT the component number of the vector, but is actually a well defined function of the component number, and I am lost how to do this? changing "Ticks" didn't help, or I did it wrong, so I am wondering if anyone knows how to do this...

Hi all, I want to fit a curve through 6 points (please see figure attached, the curve in the picture is a drawn one not a fitted one. That is just to give a feel how the fitted curve would look like.) in a log-linear plot. Is there any way I can do it? Thanks.

Since the deci in decibels means 10, why is decibels of Magnitude in the Bode plot calculated as 20log instead of 10log?

1 -> 2 : Isochoric heat addition 2 -> 3 : Polytropic expansion 3 -> 1 : Isobaric compression back to the initial state Sketch this cycle on a pressure-volume plot in relation to the saturation curve. Now, my question is, why is the polytropic process on the PV plot concave up and not...

Hi, I have a 8th order s-domain transfer function that i would like to normalize for plotting a bode plot. The transfer function is in expanded form i.e. s^8 +s^7+s^6 etc. i want to normalise the frequency f by frequency f0 such that s = j(f/f0) instead of just s = j2πf. the reason i...

Hi, I have a set of experimental data given in terms of speed u versus distance x. But I want to obtain a plot of distance x versus time t. The problem is I don't have the end time of the experiment. In this experiment velocity is a function of distance, u=u(x) and distance is in turn of...

hi i solve numerically two coupled equation and obtain two function x[t] and y[t]. how i plot x[t] versus y[t] so that horizontal axis to be x[t] and vertical axis to be y[t]. here is the notebook of mathematica http://www.mediafire.com/?g4sa3zi630vi8nl thanks

In my course for Control Systems Engineering, I came across the Nyquist criterion for stability of a closed loop system, which confused me to no end. I thought the Internet would provide me some relief, but alas, I ended up getting even more confused. Different sources use different terms and...

Hi guys! Kinda stuck here.. I'm trying to plot the temporal temperature distribution across a metal rod of length 1 meter. The rod is heated at one end and the temperature is measured every 5 cm along the meter rod every 10 minutes for an hour. Basically I have 6 text files, each...

Dear Friends I have made 2D plot in MATLAB and want to convert it in 3D can you give me any suggestions please. if s=x^2+y^3 x=linspace(0,2); plot(y,s,'b') this gives the plot of 2D I want to make it in 3D for any value of z axis(-1 to 1) what changes i have to do ?

Hi, I have an assignment where we basically have to make a Velocity vs. Substrate plot and find the Km and Vmax values. We then have to do a double reciprocal plot and find the Km and Vmax from that. My first question is if I have to convert the units of my axes so they are uniform...

Homework Statement Plot 3e^(-i5∏/3) on an Argand Diagram The Attempt at a Solution Re(e^iθ) = cosθ = cos(-5∏/3) = 1/2 Im(e^iθ) = sinθ = sin(-5∏/3) = √3 / 2 So I'd go along the x-axis to 1/2 and then upwards in the y-direction to √3 / 2 and plot the point there. Is this the...

Homework Statement I am asked to solve Fisher's equation, i.e. the PDE ut = uxx+u(1-u) . Then I am asked to describe how the speed of the wave front of solutions to it depend on the amplitude of the initial population with the "mutant gene" and likewise how does it (the wave front of...

Homework Statement I am constructing a Bode plot from a given transfer function. I having trouble because I am unsure how to rewrite the transfer function in the proper form. What makes this transfer function particularly tricky for me, is that there is no "jω" in the numerator, just ω^2...

Is it okay to compare box plots with different number of data (number of n)? Thank you very much.

Hello everyone, I'm having a problem. This is my program: Script simpode2120.m: function zdot=simpode2120(t,z) zdot=[z(2);(20/100)*(50-10*z(2)-30*(z(1)-z(3)));z(4);(1/25)*(-245.2*z(4)-30*(z(1)-z(3))-50*z(3))]; end Script simpode2140.m: function wdot=simpode2140(t,w)...

If I want to plot multiple iterations of a while loop on one plot, how can I do that? Every time I use "hold on", it just distorts the original line after every iteration instead of drawing independent lines. Please help

How do you plot (1+i)i, where i is the imaginary number. I decomposed it to eilog√2e-∏/4e2∏n (n = 0, +1, +2, ...) Should it be some kind of lattice? I would imagine it's discontinuous due to the n Thanks

Consider the sequence (n) n=1 to infinity. Plot the sequence on the unit circle: n modulo 2*pi for n≥1. What do you see? Attempt: I really honestly have no idea what to do. We are learning in class about limit laws and how to prove them, so this question seems to be coming out of nowhere. :(

Hi all, I'm having problems with something I'd like to do. Basically I have a 3D scatter plot and would like to add a line of best fit to it, I've googled this but most of the answers I get are incomprehensible to me (I'm a chemistry PhD student and my maths isn't amazing). Does anyone...

2 travelining in a straight line initial velocity is 14m/s, at a constant acceleration of 2.0m/s^2 to a velocity of 24 m/s a) how much time to reach velocity of 24m/s t= v-v0/a or 24-14/2= 5 seconds b) distance covered by car in this process? d=v0(t) + 1/2(at^2) or...

Hello, i have a function that i need to plot in 3d, it specifically describes the change in the power of a router considering many readings in different places.. so i have the power in dBm against a square space of a building.. if anyone can help me use the surf(), how should i...

Homework Statement The concentration of cadmium in seawater can be determind spectrophotometrically. To six 50.0mL seawater samples, various volumes of a 10.0ppm cadmium solution were added and all were taken through the analytical procedure with the following results: Amount Cd Added...

Hi, I need to find the 6th point of a graph line. The line is not totally straight. Is there step I can take to find the equation from the 5 point alone?

i have been given a function to plot. but i don't understand the function. the function is: f(t)= n when n+1>t>n>0 f(t)= 0 everywhere else actually its a step function. i don't know how to write it here. please explain the function to me and also help me to plot its graph

Homework Statement The problem statement is a) to find expression for the position, velocity, and acceleration vectors, and to describe the path of the object in an xy plot. The coordinates of object moving in the xy plane vary with time according to the equations: x = - 5.00m sin(wt), w is a...

hi there, I've a got a little problem here. I was trying to parametrically plot the hyperbola x=sec(t) y=tan(t) and mathematica always plots the asymptotes as well. Is there a way to hide these kind of asymptotes I know how to use the exclusions option to hide horizontal or maybe even...

Hi, Does anybody know how I can let Mathematica show the origin point when plotting? Usually, it labels the axes with numbers but not the origin. I have to use Tick{} to let it show origin. But who knows how I can have it show automatically? Thank you.

I want to study antenna patterns of different arrangements. I am looking for a very cheap software ( free is even better) to plot graph if I provide the \;R,\theta,\phi. Even if 2D plot would be helpful like keeping either \;\theta\;\hbox { or }\; \phi\; constant and vary the other angle to...