Matlab

Fast Fourier Transformation / Power Spectral Density
I am looking to a Fast Fourier Transformation with a set of data. All of the tutorials I have seen so far used a function to describe the data, rather than data points. I am also trying to transform the data into the power spectral density if anyone is familiar with that, but for now I’m trying to take care of on... 20 Jul 2010 11:20

memory usage issue
dear readers, i'm in need to know that how much system-memory is being utilised in executing a particular *.m file. is there any command for the same, or is there any suitable method to know the computational complexity involved therein. ----------- ashutosh srivastava ... 19 Jul 2010 13:33

QR factorization vs Least Squares
hey guys, i am trying to understand the cointeration approach to find the "hedge ratio" for 2 assets. I am under the impression that this should be the same as running a regression of one asset against the other, so i was thinking the slope would be the same under both methods ( method 1=cointegration using QR factoriz... 20 Jul 2010 06:59

UITree child node expansion
I do not know anything about java and hence I have been trying to construct a tree view using the uitree unsupported function. From the help file available for uitree I have been able to construct a tree view which would only expand the root node and any other child node cannot be expanded. I want to use the handle of ... 19 Jul 2010 12:26

Multiple xPC Synchronization issue with Multi-tasking
I am synchronizing the start of two xPCs and on one system, I am utilizing the multitasking capabilities in Simulink. I have a subsystem that is defined as an atomic unit and runs at 10x my base sample rate. The reason why is that there is a large matrix calculation inside that does not complete within the base sampl... 19 Jul 2010 12:26

text not saving from figure
I have the following f=figure() imagesc(img) colormap(gray) axis off text(50,50,'test','Color','White') saveas(gcf,'image.jpg') I can see the figure but the text is missing. If I take out 'colormap' OR 'axis off', the text is saved. if BOTH are there, then it doesnt work. Is there something special I ... 19 Jul 2010 12:26

Test if vectors are the same size
Hello all, My program extracts filenames from an Excel database. Problem is, when people type the wrong filename into the Excel sheet the program returns the error that the vectors were not the same length. That is because the incorrect filename, in this case an image, does not exist. Since the image doesn't exist... 19 Jul 2010 13:33

function
i am reading from file of type vout=x; vin=y; using textscan(fid,'%s','delimiter','=') and getting 'vout' 'x;' 'vin' 'y;' how to read without getting these(') please help thankyou ... 19 Jul 2010 16:51

function
hi i am extracting text from file which contains vout=x; vin=z; eq1=A*p+B*u; using c=textscan(fid,'%s','delimiter','=') which gives output as 'vout' 'x;' 'vin' 'z;' 'eq1' 'A*p+B*u;' please help me to get rid of (') ... 19 Jul 2010 11:19

Issues with AVIREAD?
Here is my scenario: I wrote a piece of code to read in an avi, compute the average intensity over 1000 frames, subtract the average from each frame, and spit out the reassembled, filtered video. When I originally wrote the code the only machine I could get it to run on was a 64 bit Mac running 2009a (because of fil... 21 Jul 2010 12:26