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43 Threads found on edaboard.com: **Grid Matlab**

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

Digital Signal Processing :: 01-05-2017 11:20 :: CataM :: Replies: **5** :: Views: **346**

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.

Electromagnetic Design and Simulation :: 11-07-2016 20:27 :: rrumpf :: Replies: **3** :: Views: **340**

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

Electromagnetic Design and Simulation :: 04-23-2016 14:35 :: andre_teprom :: Replies: **4** :: Views: **398**

hi every one;
i am studied an article with title

Electromagnetic Design and Simulation :: 08-22-2015 07:26 :: llyazdani :: Replies: **0** :: Views: **503**

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**?

Digital communication :: 05-30-2015 07:03 :: danielberhan :: Replies: **1** :: Views: **788**

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

Analog Circuit Design :: 10-26-2014 17:56 :: bouhafsali :: Replies: **0** :: Views: **595**

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

Electromagnetic Design and Simulation :: 06-04-2014 16:08 :: Lognosh :: Replies: **0** :: Views: **766**

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*

Digital Signal Processing :: 08-08-2013 23:56 :: Suraj Majumdar :: Replies: **1** :: Views: **745**

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

Electromagnetic Design and Simulation :: 05-06-2013 12:57 :: CG0210794 :: Replies: **2** :: Views: **476**

Can Someone Help me Modelling Smart **grid** Using **matlab** , Simulink

PC Programming and Interfacing :: 01-08-2013 01:54 :: mushahid980 :: Replies: **0** :: Views: **975**

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

PC Programming and Interfacing :: 01-07-2013 16:24 :: mushahid980 :: Replies: **0** :: Views: **1340**

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....

ASIC Design Methodologies and Tools (Digital) :: 11-28-2012 04:15 :: ayepqi :: Replies: **0** :: Views: **374**

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

Analog Circuit Design :: 07-16-2012 08:53 :: mehran_66 :: Replies: **0** :: Views: **901**

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

Heuristic methods, Machine Learning, AI, and Soft Computing :: 04-29-2012 15:49 :: Bandyopadhyay :: Replies: **0** :: Views: **1887**

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

Software Problems, Hints and Reviews :: 03-24-2012 14:38 :: nanock :: Replies: **1** :: Views: **578**

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

RF, Microwave, Antennas and Optics :: 03-14-2012 05:13 :: Marat86 :: Replies: **1** :: Views: **760**

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

Elementary Electronic Questions :: 01-30-2012 14:04 :: roadking7755 :: Replies: **1** :: Views: **2235**

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

Digital Signal Processing :: 01-19-2012 08:33 :: blooz :: Replies: **1** :: Views: **525**

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

Digital Signal Processing :: 12-08-2011 00:46 :: thylacine1975 :: Replies: **2** :: Views: **1016**

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:

Digital Signal Processing :: 10-28-2011 13:51 :: jake1 :: Replies: **5** :: Views: **836**

Network :: 09-21-2011 13:09 :: devilwar :: Replies: **1** :: Views: **934**

how to make a coding for discrete-time periodic signal
s(n) = cos ωn
ω = 2π/5
i had try this coding but was error
n = 0:10
ω = 2*pi/5
s(n) = cos (ω*n);
plot (n,s(n)) **grid** on;

Mathematics and Physics :: 04-17-2011 12:27 :: dmss :: Replies: **5** :: Views: **705**

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.

RF, Microwave, Antennas and Optics :: 11-09-2010 07:37 :: Eng.Ami :: Replies: **2** :: Views: **628**

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

Digital Signal Processing :: 09-06-2010 08:47 :: harithota20 :: Replies: **0** :: Views: **587**

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

Electromagnetic Design and Simulation :: 06-30-2010 05:30 :: hut_tkk :: Replies: **1** :: Views: **1967**

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

Analog Circuit Design :: 04-26-2010 06:01 :: pradeep kumar p :: Replies: **0** :: Views: **2116**

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

Electromagnetic Design and Simulation :: 03-18-2010 14:04 :: mik4us :: Replies: **0** :: Views: **2433**

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, Opti**grid** 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 (...)

Digital Signal Processing :: 02-07-2010 15:40 :: sanjushka :: Replies: **2** :: Views: **3389**

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

Digital communication :: 11-15-2009 22:22 :: RBB :: Replies: **4** :: Views: **5528**

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;

Digital Signal Processing :: 09-18-2009 11:37 :: mayavi :: Replies: **1** :: Views: **1366**

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);

Digital Signal Processing :: 07-28-2009 12:59 :: engr_najam :: Replies: **8** :: Views: **8018**

In a **matlab** code, i have to finde the symbol error rate of 32qam modulation with awgn and SNR from -30 to 30 and step 5. But the figure apears wrong. Can somebody tell me what i made wrong in the code???
clear
N=10^4;
M=32;
for SNR=-30:5:30
x1=randint(1,N,M);
y1=qammod(x1,M);
for t=1:N
awgn1 =awgn(y1,SNR,'measur

Digital communication :: 06-09-2009 08:34 :: groun :: Replies: **3** :: Views: **3707**

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

Digital Signal Processing :: 04-23-2009 15:30 :: Aya2002 :: Replies: **1** :: Views: **2203**

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?

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 11-05-2008 23:47 :: hmsheng :: Replies: **0** :: Views: **2052**

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

Digital Signal Processing :: 01-05-2009 21:01 :: taka_taka :: Replies: **7** :: Views: **2727**

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?

Software Problems, Hints and Reviews :: 07-10-2008 15:13 :: hisa :: Replies: **0** :: Views: **1607**

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));

Software Problems, Hints and Reviews :: 07-03-2008 17:46 :: saeidj :: Replies: **2** :: Views: **1358**

figure(1);plot(x,y)；**grid** on;
figure(2);polar(x,y);**grid** on;

Electromagnetic Design and Simulation :: 10-28-2007 20:26 :: handoctor :: Replies: **2** :: Views: **5450**

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**

Digital Signal Processing :: 09-04-2006 03:54 :: amine :: Replies: **3** :: Views: **10630**

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

Electromagnetic Design and Simulation :: 05-01-2006 09:35 :: upquark :: Replies: **1** :: Views: **1751**

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**

Elementary Electronic Questions :: 03-02-2006 13:16 :: v_c :: Replies: **3** :: Views: **994**

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')

Elementary Electronic Questions :: 01-09-2006 00:47 :: hr_rezaee :: Replies: **5** :: Views: **17319**

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

RF, Microwave, Antennas and Optics :: 04-08-2005 06:14 :: adel_48 :: Replies: **3** :: Views: **10201**

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