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# Grid Matlab

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43 Threads found on edaboard.com: Grid Matlab

## Matlab - RCS calculation surf function

On the Mathworks page I have found the following: surf(Z,C) plots the height of Z, a single-valued function defined over a geometrically rectangular grid, and uses matrix C, assumed to be the same size as Z, to color the surface. See Coloring Mesh and Surface Plots for information on defining C. And this is the page where the

## How to write a Matlab code for n-coupled transmission line using FDTD

I suspect maybe that third conductor is too close to a boundary or perhaps even embedded in a PML. Check your grid for proper spacing of everything.

## How to generate a meshing object

If there are not any assymmetry at above geometry or preferred direction for the scattering field, I would prefer to use some meshing grid that equaly fills the entire surface, however if the field beams are concentrated at the poles, the above pattern seems appropriate. Many field solvers I have seen, seem to use the triangular meshing pattern

## [moved] matlab simulation_micro grid

hi every one; i am studied an article with title

## MIMO channel estimation

can any one help in matlab code for LTE downlink channal estimation using MMSE estimator for MIMO with transmit divesity?I have reached at OFDM reciever after that i need to estimate the channel and extract for the whole grid and i need a help to make channel estimation using MMSE estimator and extract data for the whole grid?

## matlab /simulink model for pv connected to the grid

Hi. I need to matlab/simulink model for grid connected to photovoltaic with only inverter. with out dc dc converter.

## CST plane wave postion in mesh

Hi, This question has asked before: <- What I do: I use the plane wave excitation in CST MWS and then transfer the results to matlab, using the Resultreader.dll. For my project it is important to remove the Plane wave excitation from the grid. Everything is done in half space at a fixed freq

## Frequency Modulation Using MATLAB

I hope this helps - clc; clear all; fm=50; fc=200; mi=10; t=0:0.0001:0.1; m=sin(2*pi*fm*t); subplot(3,1,1); plot(t,m); xlabel('Time'); ylabel('Amplitude'); title('Message Signal'); grid on; c=sin(2*pi*fc*t); subplot(3,1,2); plot(t,c); xlabel('Time'); ylabel('Amplitude'); title('Carrier Signal'); grid on; y=sin(2*pi*fc*t+(mi*

## How can i specify media between 2 curve in MATLAB program

Hello sara67, If you go to my groups website, , and go under resources and you will find some lectures notes. They explain how to place devices on a grid for FDTD and other various numerical methods. Cesar

## Smart Grid Modelling Using Simulink

Can Someone Help me Modelling Smart grid Using matlab , Simulink

## Centarlized Energy Management System Using Simulink/Matlab

I am Creating a Virtual Simulation of Wind grid , and Solar grid , integrated together as a Single grid and It's Control System for Centralized energy Management System for a Single Building can someone help me as i am new to , This Thing , Simulink , For now i can developed such a model 85395 kindly peoples help m

## PLL simulation to be use in the PV grid connection

hye...actually i was still new in matlab/ project is to synchronized the frequency and voltage of my pv with the it possible for me to use PLL block to synchronized it...and how??:-|....i really need help from someone who know how to synchronized it....

## matlab /simulink model for pv connected to the grid

Hi. I need to matlab/simulink model for grid connected to photovoltaic. please send mdl file to my email: mehran.moslehi1987@gmail.com.

## Matlab code for beam propagation with variable ,rectangular grid spacing

Hi, I would like to request somebody to help me in the following matlab problem: I want to propagate a converging optical beam down its focus. I have started with a 1024 x 1024 number of grid points across the beam ( an uniform circle of white colour inside a background square of black colour------the size of the square is 6.5 mm x 6.5 mm a

## Help me solve errors when plotting with Matlab

hi, i will be thankful if you tell me what's the problem with this function? " function = fun1(i) tms=1; is=100; i=101:1:501; k=0.14; n=0.02; t=(k*tms)/(((i/is)^n)-1) loglog(i,t) hold on grid on " matlab says:"??? Error using ==> mpower Matrix must be square. Error in ==> fun1 at 7 t=(k*tms)/(((i/is)^n)-1) " thank you

## far field help in matlab plz ?

Far field is a function of angular coordinates teta, phi. Therefore, Far field=E(teta, phi), normalized Far field=E(teta, phi)/Emax. Far field of dipole f angular coordinate phi =1 %Far field of dipole f angular coordinate teta t=-90:0.01:90; E=cos(t*pi/180); plot (t,E,'k'); grid on; %Far field of antenna array t=-90:0.01:90; % teta

## [Matlab]Plot3 Multiple Lines

Hi all, I'm working on a project and was wondering how to plot multiple 3D lines on one grid. I have the 2D done and attached, but when I add a third dimension to plot3 it still shows a 2D plot like the one attached. Thanks This is what I'm calling to try and draw the 3D lines, which has three arrays all the same length: hold on for i=1:len

## Simulation for a project in Robotics

x=; y=; plot(x,y) title('sample'); xlabel('X '); ylabel('Y'); grid on

## Matlab FFT for Varying Signal Frequency

Heya Scott - unevenly sampled data is a turd! Two options spring to mind: 1. Resample the data onto a 1ms grid and go from there, or 2. Use spectral estimation techniques that don't rely on regular sampling, such as the Lomb-Scargle periodogram described in Numerical Recipes ( ). I see someone has kindly written a function

## can someone help me understand this matlab code?

freq = ; mag = ; x = fir2(101, freq, mag); % Evaluate and plot the input spectrum = freqz(x, 1, 512); plot(w/pi, abs(Xz)); grid xlabel('\omega/\pi'); ylabel('Magnitude'); title('Input spectrum'); pause % Generate the down-sampled sequence M = input('Type in the down-sampling factor = '); y = x([1:

## need help.any related abt network final year project for IT student major Networking

grid computing is a good field to work with.

## i had problem to do the coding in matlab

s(n) = cos (ω*n); plot (n,s(n)) grid on;s = cos (ω*n); plot (n, s), grid on;

## Drawing using MATLAB "HELP".

Hi... I want to draw a spherical shell with inner and outer radii equal to a & b, centered at (x,y,z).. and fill it with a dielectric material with permittivity ( ε = ε0×εr ). The problem is in defining the spherical shape. and this spherical shell is inside a 3D Cartesian Yee grid. Thanx in advance.

## any body can help me for getting no. of ZERO CROSSINGS of a signal

how to find the no. of zero crossings of a random signal in matlab. i am using this code, but i am not getting the exact answer, function zc=zcr(sig,N) clear all; fid=fopen('C:\Documents and Settings\Measurement lab\Desktop\imf1.txt'); data=fread(fid,1000,'bit4'); plot(data(1:100)); grid on; sig = data; thresh = 0; N = length(sig); zc

## HFSS: Field data export

I know there's a million threads about this topic but i browsed thru them and couldn't get any like to export numerical data of the field above and use it in matlab. I know i need to use the field calculator but i'm not sure how to create the grid points. If I select calculate grid p

## matlab /simulink model for pv connected to the grid

hi this is pradeep doing mtech in nit.i want matlab/simulink model for pv sytem.please send mdl file to my email

## Cartesian staggered grid FDTD in Matlab

I have a problem with a technique with particular focus on non-reflecting boundary conditions and handling non-Cartesian surfaces. The balance between numerical efficiency and accuracy, in particular with regard to the approximation of the non-Cartesian surface have to be explored. My problem is the following two-dimensional problem : An omni

## Grid based clustering - MATLAB code

I need grid based clustering algorithm (code) for matlab (or C++).. I can't find it anywhere... Please help.. Something simple that works.. STING, WaveCluster, Clique, Optigrid or something else.. I'm writing a paper about grid based clustering and I need to attach code to show how it works.. If anyone knows, please (...)

## theoretical curve for BER of ASK

Coherent ASK detection has the same Eb/N0 characteristic as coherent FSK detection. If you have matlab you can utilize the bertool... SNR = (0:1:18 ); BER = berawgn(SNR, 'fsk', 2, 'coherent'); figure; semilogy(SNR, BER); grid on; xlabel('E_b/N_0 (dB)'); ylabel('BER'); Attached is the snippet above plot

## plotting FFT in matlab find error please

The following program is not showin the frequency properly that is supposed to be got by fft. please help. clear all;clc;close all; fs=1e3; t=(0:fs)'/fs*10; f=30; x=sin(2*pi*f*t); xf=fft(x); plot(t,x); hold on plot(t,xf,'r'); grid on; axis tight; zoom on;

## need help to plot ECG wave at MATLAB from some .txt file

Here i hav written a small code to plot ur data, hope it will help clc clear all fid=fopen('C:\Documents and Settings\Zeeshan\Desktop\a.txt'); data=fread(fid,inf,'int16'); figure(1) plot(data(1:100)) grid on fclose(fid);

## Help me fix Matlab code for finding error rate in 32-QAM modulation with awgn

M=32; figure hold on axis() grid on legend( 'simulation-32QAM'); xlabel('Es/No, dB') ylabel('Symbol Error Rate') title('Symbol error probability for 32QAM') for SNR=-30:5:30 x1=randint(1,N,M); y1=qammod(x1,M); %for t=1:N %awgn1 =awgn(y1,SNR,'measured'); %end ynoisy=y1+awgn(y1,SNR,'measured'); z=qamdemod(ynoisy,M);

## Matlab code for Representing a noisy communication channel

clc;clear all; %create a random digital message M=64; %alphabet size x=randint(100e3,1,M); %% %use 16-QAM modulation to produce y y=modulate(modem.qammod(M),x); %% %%transmit signal through an AWGN Channel ynoisy=awgn(y,27,'measured'); %% %Create scattet plot from noisy data scatterplot(ynoisy),grid; %% %Demodulate ynoisy to recover t

## Matlab bode plot setup

We can plot the magnitude/phase and mark the phase margin / gain margin of a system with following command phase (sys) But the defaust unit used in the plot is rad/sec. and the grid line is default off. 1. How to program to set the unit to Hz directly? 2. How to program to set the grid line is on?

## ECG image segmentation

I am too working on extraction of QRS and all other fiducial points from the ECG grid paper. I saw some of the in-trend, I think, algorithm to detect the R-peak in this paper. "R-wave Detection Using Continuous Wavelet Modulus Maxima", Legarreta et al. I think you can work with the modulus maxima. I will try it too. Good luck

## mesh generation for FEM in matlab

Hi all I want to grid (FEM 2-D) a geometry that is bounded with a function (defined in a mfile) in matlab. in pde of matlab it is described with command "initmesh" but this command did not recognize my function. I want to know the user defined function must have what properties?

## Help me program a plot in Matlab software

Hi x: x(1:12)=0; x(13:17)=1; x(18:29)=0; n=-14:14; stem(n,x,'.'); grid; axis() For X(ejw): W=-2*pi:1e-4:2*pi; plot(W,sin(2.5*W)./sin(W/2));

## matlab graphs (polar,mesh,surf)

Search matlab help for "plot", "polar", "mesh", and "surf", and you will find good examples. Here's a simple example of subplots, and a few other adjustments: x = 0:30:360; y = ; subplot(1,2,1); plot(x,y); grid on; set(gca,'XTick',0:30:360'); xlim(); subplot(1,2,2); polar(x*pi/180,y); view(-90,9

## Image processing (circle using MATLAB)

Xc= 2; %Center for x Yc = 3; %Center for y R = 2; %This is the radius x=0:0.01:1; %degree plot(Xc+R*cos(2*pi*x),Yc+R*sin(2*pi*x));%the circle plot grid

## help me!!! I need sub grid fdtd code with matlab

I have to solve sub grid(irregular) fdtd with matlab. I hope some one can upload this code. Please~~~~~~!!!

## Need help with plotting V and I in Matlab code

I think you should first solve for I as a function of V. Then you can use that to write an expression in matlab. Once you get that expression and write I=f(V) then you are basically done. The following code (with an appropriate expression on the right hand side of I= ) should do it. V=; I= plot(V,I),grid

## Matlab attemp to execute script as a function

hi i ran your program in matlab 7 and it worked successfully. i think error belong to "angle" because it is one of matlab functions. use: r = 1.2; theta = 10*pi/180; ang = 0:theta:36*theta; mag = r.^(ang/theta); polar(ang,mag) grid title('Polar Plot')

## 3D pattern using Matlab

Hi, I think you may have a problem with that, since matlab hasn't 3D polar plot instruction. However I use a spherical triangular grid (either imported as ASCII from any 3D graphing tool, or generated manually) then use PATCH3 instruction to plot the triangles with the color being proportional to the radiation intensity (or gain in that dire