Plots Definition and 133 Threads

Dear all, I need to evaluate some data from questionnaires (in the form of scale of values from 0 to 10) and I thought to use the box plots. Please, someone can provide me with some helps (references,etc) for the interpretation? In some cases, the median does not falls inside the box but it is...

Today I was trying to figure out how to create a stick plot using IDL. I'm talking about a plot in which each data point is connected to the x-axis by a vertical line. It is often used to visualize time sequences and other discrete data in engineering. I've also heard it called a stem plot, but...

Hi there, I'm looking for a good book dealing with all the power of python plots (3D plots, basemap-plots, mayavi ...) and with good code examples. Any recommendations? Thanks

Hi, This isn't really technically a homework question but I thought I'd still ask here... I am solving a spring pendulum model (set of differential equations) using Matlab, and the homework assignment tells me to plot the trajectory of the bob in the x-y plane. Well, I did that, but I...

Homework Statement Okay, this is probably a really simple thing but I'm just not able to wrap my head around it for whatever reason. I've got a second order system with feedback, where I've found the transfer function (and the real and imaginary parts of the transfer function), given by -AB =...

Hey, could some one please help me with bode plots. I have a transfer function,lets say G(s)=0.16s/(1+0.16s) if I want to find the gain at 10 rads/s, do I subsitute s for 10 and then take 20log( G(10) )? Thats what I thought the method was, but now in my notes it says, Gain = 0.16ω/√(1...

I am having a difficult time finding a way to efficiently plot something that varies over time. I have written a program that outputs three lists of numbers like: time space value x y z . . . I want to be able to input those lists and plot 'space' and 'value' against each other in...

Hi Guys, A while back I saw a plot of Bc against Tc for a cuprate sample. There seemed to be a distinct kink in the curve in the 10-15K region. I'd like to see a few plots of optimally doped (or there abouts) cuprates particularly the <40K region. My inept Google searching only gets me the...

Hi, I'm trying to plot the coefficients of a Fourier series as a discrete plot. Does anyone know how I could go about doing this? I have mathematica 6 so DiscretePlot isn't there like in 7... Any help would be great!

This is both a question about the function used to plot AND how to plot the function (I'm interested in keeping the contour/level lines the same): This looks like a simple f(x,y) = 1/(xy) function. But how would I get Maple/Matlab to plot the contours as shown...

Hi everyone, When people present their data in plots, they always talk about 1-sigma errors, which I totally don't understand. Don't we use the standard deviation to tell us how far the a data point is from the "mean"? Why would I care about the mean when discussing errors? Shouldn't one care...

Hi, I've been working on figuring out how to make each point in a plot a color specified by a function that I wrote. I was wondering if anyone knew how to do this in a single command. The only way i have though of making this work is with a loop that goes through each individual point and...

Homework Statement I took 2 plots. Can someone explain to me why the first one comes out positive and second negative? Homework Equations The Attempt at a Solution

[SOLVED] Logarithmic plots... Homework Statement use logarithmic plots to test exponential and power law variations This statement appears in the Cambridge A'Level Syllabus Can somebody please explain what does this statement require from the student? Helpful links would be highly...

Hi While going through http://eprints.iisc.ernet.in/archive/00013500/01/lec_6_web.pdf, I came across the following two statements (on page 3), for a system with loop gain = G(s)H(s): 1. Open GH loop must be stable for designing via Bode Plots. 2. If for GH, gain crossover < phase...

[SOLVED] Quadratic Equations How would I find what 'a' and 'q' is in the equation of y=a(x)^2+q when I'm given 2 plots? Example:Find 'a' and 'q' so that a parabola y=ax^2+q passes through each pair. a)(-3,11)and(4,18) if you could give me step by step explanation that would be much...

Hi all. I am using meshgrid and mesh to plot 3D graphs in MATLAB. Though my meshgrid is quite "discrete", MATLAB always try to generate surface for me. What I actually want is some discrete lines rather than the surface. Anyone can teach me how to obtain discrete lines?

I am simply trying to find a way to set the plot increments to a set value. So I want the increments to be increasing by 10's (10, 20, 30, etc) and I want the physical distance between them to be the same on all plots (I do not really care what distance they are but they just all have to be the...

Hi, I'm trying to plot a 3d graph of when a function, F(i,j,k) = 1 ...I want to plot 3 variables that correspond to the i j and k against each other when the function equals 1. ...I've tried using surf but it tells me that its Z component needs to be a matrix, not a scalar or vector.. but...

im sort of new to using maple and mathematica for number theoretical functions, is there any way I can plot the values of an integer defined function in either of these programs? thanks

Any good online pdf files or websites with examples on how to draw bode plots?

hi, how can i plot the bode plot for this transfer function: [FONT="Courier New"] 100 ---------------- s^2 + 10s + 100 i have 2*ksi*w=10 w=sqrt(100)=10 thus, ksi=1/2 -ksi*w=-10/2=-5 so the overshoot will be at ksi which is at 1/2 and my magnitude is 1. i don't see...

Homework Statement The question asks the reader to make a Bode plot for the following equation: H(\omega)\,=\,\frac{50\left(j\omega\,+\,1\right)}{j\omega\left(-\omega^2\,+\,10j\omega\,+\,25\right)} Homework Equations j\omega\,=\,s The Attempt at a Solution...

What is meant by a linear-log plot and why is it used? In the book I have, the author is demonstrating that some data fits an exponential distribution. So what he does is a linear-log plot of both the exponential distribution and the empirical data, and then overlaps the 2 graphs so show they...

My notes from lecture are somewhat deceiving. I have this table that is supposed to make plotting the phase portion of a Bode plot simple. I understand the magnitude portion, however I do not get what is being said for the phase portion. I am spending too much time on something that is supposed...

Hello everyone, As I've mentioned in a thread in the cosmology forum, I'm currently reseraching dark matter. I am often confronted with 'exclusion plots' for the results of WIMP direct detection (via nuclear recoil) experiments, where one axis depicts WIMP mass, and the other depicts cross...

If an object is thrown vertically upwards at an initial velocity of n ms-1 (metres per second) and returns to the point where it began, the final velocity will be n ms-1 and the velocity at the highest point reached will be 0 ms-1. But...what would be the shape of the velocity-time plot...

Hi I'm currently working on an assignment and one of the questions requires me make a plot of the following. I am told that Excel can produce the plot but I don't know how to enter the equation. x_{n + 1} = \frac{{11.5x_n }}{{1 + x_n ^2 }} - \lambda ,x_0 > 0 A few values of lambda...

I wish to use a for loop i already made and replace a number with a variable defined as a range of numbers, then plot the max of another function that used the function with the new variable. How would I do this? example: x = [0:.5:1] r = 5*x t = 3/r new program: x = same n =...

What are some obvious flaws found in plots for movies, TV shows, novels, short stories, etc? I just noticed this in the movie The Hunt For Red October. The basis of the movie is the imminent threat posed by a Soviet built and operated first strike weapon that can't be detected: The...

Calculate the work W done by the gas during the isothermal expansion (path C). It may be be convenient to generalize your results by using the variable R_v, which is the ratio of final to initial volumes (equal to 4 for the expansions shown in the figure.) Express W in terms of p_0, V_0, and...

Okay, we all know that TV is the spawn of satan and that no thinking person would be caught watching that garbage. With that said, what are your favorite or most memorable shows, skits, plots, one-liners, moments, or events. Personally, I was a complete TV kid and still am. I really watch...

I've been working on a program that can make plots for the past two weeks. I've been toiling over window creation, how to parse up commands, multiple viewports in a window etc, and yesterday I finally got the program to do some actually plotting. All it can plot is xy scatter plots right now and...