What is Plot: Definition and 715 Discussions

In a literary work, film, story or other narrative, the plot is the sequence of events where each affects the next one through the principle of cause-and-effect. The causal events of a plot can be thought of as a series of events linked by the connector "and so". Plots can vary from the simple—such as in a traditional ballad—to forming complex interwoven structures, with each part sometimes referred to as a subplot or imbroglio. In common usage (for example, a "movie plot"), however, it can mean a narrative summary or story synopsis, rather than a specific cause-and-effect sequence.
Plot is similar in meaning to the term storyline. In the narrative sense, the term highlights important points which have consequences within the story, according to Ansen Dibell. The term plot can also serve as a verb, referring to the writer's crafting of a plot (devising and ordering story events) or to a character's planning future actions in the story.

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  1. B

    Q-Q plot equivalent for discrete variable?

    Hello, You can use a Q-Q plot to visually test if 2 continuous variables are from the same distribution and you get a straight line. Is there a way to visually test if 2 discrete variables are from the same distribution? Also is there a way to test it mathematically? Thanks
  2. R

    What is the load line equation for I-V Characteristic plot?

    What is the load line equation for I-V Characteristic plots? Why is load line slope negative? According to Ohm's Law: i = V/R; so as voltage increases current increases then slope should be positive, right?
  3. F

    Python, matplotlib plot 2D histogram on polar axis.

    Any python/matplotlib experts out there?? This one has been driving me crazy all day. I have three vectors, azimuth, frequency and power, which I would like to histogram and plot on a polar axis. I can plot a scatter plot this way no problem but the histogram gets messed up somehow. An example...
  4. J

    Calculating Transfer Function off Bode Plot?

    Hey guys. I was wondering if anyone could give me some hints or help me understand well how to get transfer functions off bode plots. Here is an example I need to solve: http://i1226.photobucket.com/albums/ee410/jean28x/bodeplotcalc.jpg
  5. J

    How do I see the gain from this Bode plot? (simple)

    This is the Bode plot of a Broadband Bandreject Op Amp amplifier. The exercise says this: I know that in order to get both cutoff frequencies I need to subtract 3 dB from the plot, but how do I get the gain? I would think that the gain is 3 dB because it is also the distance between the top of...
  6. M

    Can you deduce the coefficient of restitution from impace force plot?

    If you have the impact force on the y-axis (in Newtons) and the time on the x-axis (in milliseconds), can you get the coefficient of restitution from just this? The plot is for the force of impact exchanged between two balls as a function of time. I know the coefficient of restitution is the...
  7. B

    How do i plot 2D steady state temp in maple?

    Hi all, I am wondering how I plot the steady state temperature distribution of a square flat sheet in maple. I solved the initial partial differential equation I was given and ended up with a function generalized as T(x,y) =(constants)*sum(stuff). Which is a Fourier series representing...
  8. D

    MHB Wave equation soln check and plot question

    \begin{alignat*}{3} u_{tt} & = & c^2u_{xx}\\ u(0,t) & = & 0\\ u_x(L,t) & = & 0\\ u(x,0) & = & \frac{x}{L}\\ u_t(x,0) & = & 0 \end{alignat*} Let's start with $u_t(x,0) = 0$. Then $$ u_t(x,0) = \sum_{n = 1}^{\infty}B_n\frac{\pi c}{L}\left(n + \frac{1}{2}\right)\sin\left[\frac{\pi x}{L}\left(n +...
  9. D

    Mathematica Learn How to Plot Vector and Stream Plots in Mathematica

    $$ \vec{E} = -E\cos\theta\left(1 + \frac{2a^3}{r^3}\right)\hat{e_r} + E\sin\theta\left(1 - \frac{a^3}{r^3}\right)\hat{e_{\theta}}. $$ How can I plot this in Mathematica?
  10. R

    How to determine type of Filter from pole zero plot?

    According to me Transfer function will be G(s)= (s2+2ζωn+ωn2)/((s+p1)(s+p2)) I assume from the given plot that ωn < p1 and ωn < p2 Then the bode plot will be as per me like following :From the Bode plot we can see for higher freq magnitude is amplified . So it will be High pass Filter. That's...
  11. Adoniram

    Program to plot 3D trajectory?

    Howdy folks, I have been given the opportunity to do some extra credit for my mechanics class. As an assignment, my prof would like to see a 3D trajectory plotted via a program (like Python). My basic assignment is to plot the trajectory of a soccer ball after it has been kicked. I don't...
  12. K

    A Plot of Magnetic Field Lines

    Hi, I was wondering - In the plots that we see of magnetic lines of force (like this one) what exactly are they plotting against what? Meaning is it Bx vs x vs y, or is it Bx vs By vs Bz?
  13. R

    Is the Nyquist Plot Problem Solvable with a Stable Open Loop Transfer Function?

    1. Problem is given in the following link: http://s11.postimage.org/mrns0fu37/Problem.jpg Homework Equations In my opinion open loop transfer function is given stable. So poles on RHS for open loop t.f. will be 0. But nyquist plot rotates (0,0) point by -360 . So thare will be...
  14. L

    MATLAB Producing arrays to plot (MATLAB)

    Hi everyone, my code is a little rusty and a work in progress but I was wondering how I would go about producing arrays for the calculations performed in the while loop for the analyses so they can be plotted. I have the following parameter input; G0 = 50; v = 0.25...
  15. D

    MATLAB Using Matlab to plot a phase potrait for ODEs

    First create the function file and name it whatever you would like. I prefer phase-portrait. % Phase Plot Program % To use this function, do the following: % >> phase_portrait(x1, x2, y1, y2, tfinal, 'F', N); for example, % >> phase_portrait(-5, 5, -5, 5, 10, 'F', 5)function [] =...
  16. D

    Using Mathematica to plot PDEs

    You can find problems with downloadable notebooks now http://www.mathhelpboards.com/f49/engineering-analysis-notes-2882/. If one boundary is insulated and the other is subjected to and held at a temperature of unity, we wish to determine the solution for the transient heating of the slab. The...
  17. E

    How i can plot anti periodic sine wave in matlab ?

    i don't know how i can use MATLAB to plot anti periodic fun .. the origin site give this code for triangular fun: fs = 10000; t = -1:1/fs:1; x1 = tripuls(t,20e-3); plot(t,x1), xlabel('Time (sec)');ylabel('Amplitude'); title('Triangular Aperiodic Pulse') but when i use this for sine...
  18. D

    MATLAB Plotting Time Step Range for Temperature Profiles in Matlab/Mathematica

    Using this series approximation, plot the temperature profiles on the same set of axes for a range of time steps in the dimensionless time interval $t\in [0,4]$ in order to visualize the process. $$ \begin{alignat*}{3} T(x,t) & = & 1.7624\cos(0.86x)e^{-0.86^2t} - 0.1638\cos(3.426x)e^{-3.426^2t}...
  19. S

    Gain bandwidth product from bode plot

    Can anyone tell me how to find the gain bandwidth product from bode plot of a unity gain circuit for the attached bode plot? I hv attached the circuit and bode plot ...
  20. S

    Plot motion of particle with constant speed and angular velocity

    Consider the problem of a particle sliding inwards with a constant speed c and starting at radius R=pc/Ω, on a platform rotating with a constant angular velocity Ω. Give a plot of the trajectory of the particle from r=R to r=0, for p=0.5, 1, 2, 6. I'm a little confused on how to do this...
  21. H

    MATLAB Matlab: Butterworth Filter Bode Plot

    I'm stuck on a really simple problem because I haven't done MATLAB in a while. I have transfer functions for nth order lowpass Butterworth Filters: H(jw) = 1/(s + w_c)^n I want to plot the 1st to 5th order filters. How do I input H(jw) into matlab? The tf(num, den) is not efficient in that...
  22. J

    How Do I Correctly Plot an Electric Field Around a Base Station Using MATLAB?

    Homework Statement I need to plot an electric field in some range around base station, for example in range of 200m. EIRP=57,5dBm G=1 for the first example N=4 Homework Equations E=[2*sqrt(30*N*P*G)]/r P=10exp[(EIRP-30)/10] EIRP=57,5dBm G=1 for the first example N=4 The...
  23. H

    How to plot a function with several constants using Wolfram Mathematica

    How can I plot this probability density function using Wolfram Mathematica Keeping the constants the same. ψ*ψ= A^2 (x^2)exp(-2a(mx^2/h)) ; where m,a,A,and h are constants and I want the graph in terms of them. I tried: Plot[A^2 *(x^2)*exp(-2a(mx^2/h)),{x,-1000,1000}]
  24. D

    Mathematica Construct Contour Plot in Mathematica for Quasi-Linear 1-D Wave Eq

    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, &...
  25. D

    Mathematica Mathematica 3D plot color function options

    Hi, I have 3D plot used to represent the amount of light that hits a solar panel. Basically what I would like is a way to have say 10% of the data red, the next 10% of the data yellow etc. The 3D plot is at a peak in the centre and then goes to zero by some function based on data, so there...
  26. S

    Mathematica To generate and plot random real numbers in Mathematica within a specified time range

    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...
  27. F

    Mathematica Implicit function plot in Mathematica

    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...
  28. L

    Finding the acceleration of a car based on a velocity vs time plot

    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...
  29. G

    What does the Centroid of area under Rate vs Time plot represent?

    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...
  30. V

    How to use wolfram alpha to plot frequency response

    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.
  31. Y

    Plot Graphs & Tables from Excel Free with XY Graph Software

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

    MATLAB MATLAB: Adding 2d plot to 3d surface

    Consider the 3d graph of a quadratic form: 1/2*trans(x)*A*x-trans(b)*x Plot via matlab: surfc(X,Y,Z); add following lines: hold on x=-10:10; y=0.5*(2-3*x); plot(x,y); This plot a straight line which intersects the 3d surface. However, I wish for it be graphed on the contours: i.e...
  33. P

    Mathematica Mathematica, gradient plot on the 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...
  34. M

    MATLAB Plot unit circle in chebychev metric in MATLAB

    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...
  35. D

    How to find cutoff frequencies from Bode plot?

    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...
  36. D

    Get transfer function from bode plot

    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...
  37. P

    Plot IV Curves for Solar Panels Easily

    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.
  38. S

    Mathematica Plot of vector valued function in mathematica

    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.
  39. D

    Computer plot of particle orbits around Kerr black holes

    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...
  40. P

    How to plot the result of NDSolve?

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

    Sketch the response of a system(bode plot given) to two inputs

    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
  42. N

    Exploring Absolutely Stunning Plot of Random Sequence (Pic Included)

    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...
  43. S

    How to plot an SML photodiode's frequency response

    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
  44. A

    Plotting Fanno Flow Entropy Equation in T-s Plot

    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)$
  45. K

    How can I plot b[a]/b[0.0001] vs. a using Mathematica?

    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...
  46. Q

    MATLAB Debugging a Plot of V vs. z2 for June 7

    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)...
  47. K

    Mathematica plot question, dsolve

    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 +...
  48. K

    Mathematica plot question, dsolve

    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 +...
  49. S

    Mathematica Mathematica array plot won't plot and it erases all of my stored variables

    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]] +...
  50. M

    MATLAB How to plot MATLAB contour plots for a variable z dependent on x and y variables

    Hi all I am trying to do a MATLAB plot, just like the one attached. DATA: Graph shows a parameter (suppose) humidity along the height from ground upto 6 Km. Instrument measures humidity at each 30 meter height from the ground. Sample is repeated after each 15 minutes. DATA FORMAT: Data...
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