What is Plots: Definition and 147 Discussions

I said to Mathematica to plot a graph as this: Plot[Exp[-Sqrt[-x]] + Exp[Sqrt[-x]] - 2 == 0, {x, -10, 40}]. You can see that there is square root of -x, which should mean that the function is defined only for x<=0. But no, Mathematica would plot a curve also for positive values of x. How...

Hello, I've been using mathematica the past few days and quite like it. I am trying to add some figures to my word document. Because of the size of the exported emf file from mathematica, I am unwilling to have a document that is 100MB in size. So I was searching for some ways to export...

Homework Statement Find the locus of points which satisfy 2π*|z −1| = Arg(z − 1) where |z −1| ≤ 2. Homework Equations n/a The Attempt at a Solution I know that |z-1| ≤ 2 is the 'inside' bits of a circle center (1,0) with a radius 2 After that I get confused surely with |z-1|≤2 then...

hey guys, i have a question regarding bode plot g(s)= 1/(s2+4) i did get the magnitude plot correct but i am unable to understand the phase plot. by calculating on paper i got 0° but in MATLAB it changes from -360° to -180° i haven't understood how the initial phase is -360 which...

This definitely isn't a homework question as the work is already done, I'm just trying to make my presentation neater for some reports I'm turning in. I am comparing theoretical data collected from a filter, to the actual data collected. I want to overlay the two to make the comparison. I am...

What frequency are they referring to when they plot magnitude versus frequency in a bode plot of a control system? I don't understand where frequency comes from in control systems. I've researched this and I'm still very confused by what is meant by frequency.

If the B-mode sky plots could be Fourier transformed what would be a plot of the lowest order B-mode harmonic plotted on a sphere look like? I guess we need two functions of spherical coordinates, one function for amplitude at points on a sphere and one function for the orientation at the...

Hi all, I would be greatful is someone could kindly enlighten me as to the correct interpretation of the appended bode plots. My understanding when interpreting bode plots is that we desire 0 gain where the phase is equal to or exceeds 180 degrees (marginally stable / unstable). In...

The data points of the polarization of the CMB are a magnitude and an orientation that varies between 0° and 180°. What kind of mathematical field is that, not quite a vector field? Thanks for any help!

I have been working hard to get the Dark Matter exclusion plots. In most of the papers (arxiv:0808.3607), I found that the relation betweem WIMP mass and WIMP cross section is : σ is directly proportional to (μ/μp)^2 σ=cross section μ=reduced mass of WIMP and target nucleus μp=reduced...

I am trying to construct the Bode plots for \(H(s) = \frac{s}{s + 2}\). For the magnitude Bode plot, \(H(i\omega) = \frac{1}{1 - i\frac{2}{\omega}}\) and the decibel gain expression is \[ A_{\text{vdB}} = -10\log\bigg(1 + \frac{4}{\omega^2}\bigg). \] So this plots the first Bode plot, but I am...

hi! i'm beginner in the subject of vibrations. i'm trying to understand the waterfall plots. i have attached a waterfall plot. can someone please help me to understand it? waterfall plots are used when the operating speeds are varying (run up or coast down). in this plot, as the...

Hey PF! I have a test tomorrow and some of the material is on the basics of RL and RC circuits set up as high pass or low pass filters. Does a High pass filter bode plot look the same whether it's RC and RL? Same with a low pass? Can anybody to an online resource of what bode plots look like...

Is there anyone here who can, as simple as possible, tell me how a webwork plot works? I have read that the only known writer who can master this type of writing is the little known author Harry Stephen Keeler. I have lately been immensly interested in the works by writers such as Harry...

The expositions for a normal probability plot (aka normal quantile plot) (in which observed probabilities are plotted against theoretical probabilities, or sometimes the other way around, to get a rough check as to whether a set of data is normally distributed by checking linearity) are not too...

Hello all. I have two questions. 1] How do poles and zeros relate to bode plots? What happens at a pole or zero? 2] Can you come up with a rough sketch of a bode plot if you know the following (without having to use the transfer function)?: - Zeros - Poles...

Hello, I have got these formulas used for adiabatic process. Now I would like know how the plots look like. A) y=p*V^κ , where κ is Heat capacity ratio B) y=T*V^(κ-1) C) y=T^κ*p^(1-κ) NOTE: κ (Heat capacity ratio) > 1 Thank you

I saw a picture of what it might look like when I was researching it, but I'm confused about something. The picture's caption said that the complex coordinates were darkened as their value got larger, leading to a helpful graph, but I do not understand what scale they used. For my program, I...

I'm doing some data analysis for a research project. Using the program R I'm trying to create level plots. Essentially 2D contour plots without the lines. I've trawled the Internet and tutorials for days and can only find tutorials that use data from a package. I have the raw data, x, y and...

Below are a couple of problems given, 3 and 4. They are about drawing bode plots based on a given transfer function. I am wondering if anybody could please let me know if I drew the Bode plots right or wrong? Also I am not sure about how to find the crossover frequency. On task 3 I calculated it...

Hello, Why people use semi-log and log-log plots? What are they advantage? Linear plots are more convenient as they show the direct relationship between x and y variables, aren't they? Thanks.

Homework Statement The problem is attached in the picture. The Attempt at a Solution This looks like a vector in polar notation to me (r, θ). But the application of vectors to phases and periodicity is not even mentioned in the chapter! (Vector Algebra) I've tried to make sense of...

I want to do the following: Say I have 4 RegionPlot3D plots, namely A1 A2 B1 and B2. Each of those four plots are region plots so they occupies some kind of region inside the same 3d space. First I want to find and display union of A1 and A2, call it A. Then find and display union of B1...

I'm amazed http://en.wikipedia.org/wiki/Tupper%27s_self-referential_formula

I'm writing a scientific paper and I'm basing it on a set of simulations that I carried out. I have generated some plots and I need to show that my generated plots are exactly the same as the ones on a reference paper. Obviously, I can't just copy-paste the plots from the reference. So how do I...

Hi all, Can someone please help me, I am new to Matlab and I would like to use the following upload to create a 3d surface plot. I download all the files from: http://www.mathworks.co.uk/matlabcentral/fileexchange/28177-3d-surface-plots-from-excel-data-gui Then I open the MainGUI.m file...

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...

I am a graduate student who has basically no experience programming but I would like to learn so I decided to give myself a project. What I would like to do is build a web application that can plot data (2D & 3D) from a database. Once I get that far I would like to have the web application...

I am trying to do some plots for determining the range of higgs mass. Can somebody tell me how to plot higgs mass 'm_h' versus tan β ? or 'm_h' versus spectral index 'n_s' ?

I posted this first in the homework section, but no one answered it. I figured this might be a better section... I have multiple 1D data sets, let's call them data1, data2, data3, etc. Each data set has the same number of entries. Each one is either a row or a column (I can just use...

Which mainstream mathematical/scientific software do you think produces the best plots/graphs (aesthetically)? A few choices are: Mathematica, Matlab, Python (Matplotlib), Gnuplot etc. etc.

Homework Statement Two infinitely long current carrying wires run into the page as indicated. Consider a closed triangular path that runs from point 1 to point 2 to point 3 and back to point 1 as shown. Which of the following plots best shows B•dl as a function of position along the closed...

Homework Statement This is an experiment involving colliding 2 gliders on an airtrack. Initial and final speeds are both recorded. I need to plot a graph that proves the Conservation of Momentum holds true, but I can't seem to get the correct Y and X axis variables. Assuming both masses m1 and...

Hi, I was thinking if there is a way to combine 2D and 3D plots in mathematica. I mean, for example I have a curve on the XY plane and I want to combine it with a graph of a surface, so to have that curve under the surface. The other case , to combine a 2D vector field with a surface ...

Hello, I am interested in making plots similar to those attached (I have my own date :P). Any recommendations on what software to use? I suppose there are two things I would like it to do (although either one alone would be nice): 1. Create nice radial/polar diagrams with the angles and...

If you were add axis labels to a polar plot what would you use for labels in place for a y-axis label and a x-axis label?

I have an equation and some inequality constraints, for example, f(x,y)=0 and g(x,y)>0 I want to see the region (values of x and y) in a graph where both the constraints are satisfied in Mathematica. Any help will be greatly appreciated. Thanks!

Hi I am after any information regarding zero pole plots, specifically with reference to filters. I understand the process of getting the transfer function and plotting it. But once its been plotted how do you go about translating that into a frequency response. I am also wondering about...

Homework Statement Question attached Homework Equations Frequency response of circuit given in document The Attempt at a Solution The question leads me to find the Gain and phase of the gain, pole and zero terms. The breakpoint frequency and the point where the gain term is 0db...

I've had this problem many times in the past, and haven't thought of a way to fix it. Sometimes when I plot a function that requires quite a bit of effort on mathematica's part, (for example, one time the function was a sum of about a thousand terms, each of which was multiplied complex terms...

Homework Statement Drawing a field plot (using curvilinear squares) between a small sphere within a larger sphere, indicating lines of force and equipotentials. I've been trying to find a software solution to draw the diagram perfectly, but haven't had any luck in finding one. I think it...

I finally figured out what my previous problem was in my last question posted. I have obtained the plots required but I am a little confused about the trends. (1) At low Mach, should my thrust be lower compared to the value at a higher Mach? (2) Should the RPM decrease with an increase in...

I have a question: hope this fits under "Calculus" topic. I am trying to embed vector graphics in my Word documents. MathCAD does this quite nicely for xy-plots, but MathCAD is awkward for constructing vector fields like those you'd find in electrodynamics. I could use Maple, but those embeds...

Hi I tried 3Dplot Damped spring(steel spring,oil damper) in two sotwares ,and get odds results . Which one is right? In "Maxima gnuplot engine" In "WolphramAlpha engine"

Hello, as i say in title,my question is how to combine many plots with different colors in one plot. The problem is that the show command doesn't recognize the PlotStyle command. Thank you

Homework Statement I am really struggling to understand how to draw a phase plot for circuits such as low/high-pass filters and other LCR circuits. I understand how to find the gain and use this information to make a Bode plot but when it comes to phase I just don't even know where to begin...

Mathematica-My polynomial's graph is different in two plots!? Please help... In mathematica I used the same polynomial and plotted two times in different place. but in these graphs, my polynomial looks different. Is there anyone who knows the problem? --> mathematica notebook file is...

I'm trying to combine several contour plots together onto the same graph in gnuplot. I know that I can just do something along the lines of splot "file1.dat" u 1:2:3 w lines, "file2.dat" u 1:2:3 w lines set contour base set no surface set view 0,0 However, when I do that, the data from...

Hello, I was just wondering if anyone knows if there's a way to save a 3D plot in Matlab (eg a "surf(x,y,z)" plot) so that it is viewable outside of Matlab and so that you can still rotate the view etc? And in particular, so it can be viewed in a webpage? Something like LiveGraphics3D? I don't...

Hi guys I have been spending a lot of time trying to figure out how to export a plot in MATLAB (to pdf), where the graph fills most of the pdf page, i.e. no whitespace. I can't seem to find the property. Can you give me a hint? Niles.