[matlab] Forum Topics

I applied neural network toolbox to create a multilayer feedforward network. The data is a huge csv file which maps to three outputs. data = load('Train.csv'); Input= data(1:31012,1:40); Output=data(1:31012,41); %net = newff(minmax(Input),[1000,1000,1000]); net = feedforwardnet(10,'trainlm'); view(net) y = net(Input); perf = perform(net,y,Output) but this code always gives this - "Empty …

I have an application thats has been coded in C#. After build it generates a standalone dll file and the exe file. I want to use this code in Matlab. I found out from [this](http://www.mathworks.co.uk/help/matlab/matlab_external/using-a-net-object.html#bshoa6b-1) page that I can load the C# classes or codes into Matlab. dll_in_matlab = NET.addAssembly('location …

I am trying to plot a graph in matlab using c++. But the matlab is only giving me an empty graph. void portfolio::viewGraph() { double value[20]; //store portfolio value double time[20]; //store time int i=0,j=1; double cash,p; ifstream in_file("transactionhistory.txt", ios::in); string c; while(in_file>>cash>>p>>c>>c>>c>>c>>c) { value[i]=(p+cash); cout<<p<<endl; time[i]=j; cout<<time[i]<<endl; i++; j++; …

I am in a small doubt of how to proceed to the next stage. 1. I have used im2col which basically turned gray-scale image into vector. 2. I have used the function vector quantization lbg algorithm which gave the VQ codebook as the output. I understand that the image I …

Hello all!! I am new to MATLAB and am trying to do multidimensional scaling for some data I have. It is just a 24x24 correlation matrix and I keep getting an error message that it is not a square matrix, but it is!! I don't understand :/ I've been following …

I have a variable x which varies from -160 to 160 through steps of 10. `x = -160:10:160;` I have a matrix T1 which is of the form ` cos(x) 0 +sin(x) 0.00; sin(x) 0 -cos(x) 0.00; 0.0000 1 0.00000 0.67; 0.0000 0 0.00000 1.00 ` How can that be …

i am making program to read text by convert image of text into text but i have problem in the out because the text not in line but in column and i can't detect space between words . the code in matlab: load 'Charachters.mat'; str ={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9','0',' '}; f = imread('1.PNG'); …

hi i need help in design scheduling in wimax network using matlab. is there anyone can help me?

I am writing a m-file that simply takes in a picture of a board with 27 LEDS on it and simply tells you which LED is lit up. My problem is with the calibration of the m-file. I am trying to use [x,y] = ginput(27) to have the user click …

Hello, I am having difficulty writing a function file that produces an echo to a .wav recording I made. How do you create one? Thanks!

I am developing the Django application which runs the Matlab code and create some txt and png files on the server.when I run these below python command on server, it works fine but when I try to run from the server (it is coded in Viewspy).It shows file is updated.(from …

I am trying to color some alphabets in a string based on input alphabet given. suppose string: [B]AUSTRALIA[/B] INPUT: [B]A[/B] OUTPUT: [B][COLOR="Red"]A[/COLOR]USTR[COLOR="red"]A[/COLOR]LI[COLOR="red"]A[/COLOR][/B] Can anyone suggest me how to achieve it ? As m new to this.

Dear all, Perhaps a bit of random one, but does anyone have an experience of using the surface fitting toolbox in MATLAB? My specific problem is that I have fitted a polynomial to a surface which is a good fit in this instance (r squared >0.99); fitting using interpolant will …

[B]Product[/B]: [B][COLOR="Red"]Matlab, Simulink[/COLOR][/B] [B]Problem Statement[/B]: Complex feedback loops implying usage of Unit Delay Block. At certain simulation frame calculation of required values for test generation is becoming complex. Is there a way to override the Unit Delay block output without changing the model (as I am not allowed to do …

I am trying to solve a system of 5 equations in 5 unknowns. I am new to the Matlab language. I consulted the documentation and decided that the best way of doing this was to use the solve() function. However, this function does not appear to work properly for 5 …

Hows it going guys, I just had a question, which I think is simple, but I cant seem to get my head around to the solution. I have a Signals Processing lab coming up on modulation and demodulation. Anyway to cut to the chase, one part of the system requires …

Before proceeding further, my system configuration is as follows: Mac OS X 10.6.6 MATLAB 2010b ActiveState Python 2.7 I have a gui built using matlab. I wrote the following python script to open that matlab gui using pymatlab python module: [code]from pymatlab.matlab import MatlabSession session = MatlabSession() session.run('cd ~/ratter/ExperPort') session.run('addpath(genpath(pwd))') …

I have a .wav file .... I want to plot the Time-domain signal and then its Fast fourier transform (fft) using the matlab commands. Please Help ... ! :) Thanx

hey i am trying to implement the diffie hellman key exchange algorithm in matlab. my problem is this: the program works just fine for numbers upto 5 digits, but after that it just sort of stops working. thing is i need to deal (multiply,exponentiation,modular arith etc.) with really big numbers …

I want change file from JPEG to tiff and no use any compression change image size : the code I wrote is:[CODE] f=imread('source_image.jpg'); figure(1) imshow(f) imwrite(f,'new_tif_image_file.tif','compression','none','resolution',... [100 80]) g=imread('new_tif_image_file.tif'); figure(2) imshow(g) [/CODE] ~~after all these done I look at two images and they look same... what problem in this code?

Are the any problems use JPEG files in matlab ,I try type this code and get an error [CODE]imwrite(f,'filename.jpg','quality',25)[/CODE],after (reading matlabs help) that gives same answer I don't know what to do the same problem comes uo when I try use function [COLOR="Red"]imshow(f)[/COLOR] where "f" is a file with extension …