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comp . soft-sys . matlab
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 Description: The MathWorks calculation and visualization package.

 curve fitting hello im currently working on a cosine curve fit using the fminspleas code, it works out perfectly for the form f(t) = a*cos((x-phi)*(2*pi/T)), where T is the period of my function. the code lets me know a and phi very accurately, but im now in the need to find the function form f(t) = a*cos((x-phi)*(2*pi/T)) + c... more » By jorge  - 4:43pm - 1 new of 1 message

 very simple question please help ( average time ) Hi, I have a time series in seconds ( correspond to a random measurement). I would like to see on average what is the time between each measurement. It is seconds. So I am hoping that it would be between 2 to 3 seconds but I do not know how to do it in matlab. This is the time : 0 2 4 12... more » By fmri  - 2:25pm - 2 new of 2 messages

 Add Random Phase inside eclipse-masked image. I've tried to add random noise only to phase of the image based on this code. [link] However, Now I want to this job WITHIN the image which eclipse-shaped masked. like this. [link]... more » By June Kang  - 2:09pm - 1 new of 1 message

 geometric mean month by month Dear All, I need some help please. I have two columns in a matrix B. B=[A, X]; X is a column vector that contains different daily observations. A is a column vector that contains the number of the month (for example for January it has "1" for february "2" etc till December where it has "12").... more » By Saad  - 1:56pm - 1 new of 1 message

 woodchips@rochester.rr.com Hi! I´ve been using yor fminspleas program, which is great, im getting exact result as if i was using te curve fitting tool box, except i encountered a little problem, which i was hopping you could help me out with, im trying to fit a cosine function to a set of data of the form f(t) = a*cos((x-phi)*(2*pi/90)) + C, being C the displacement in the y axis,with the help of fminspleas i´ve gotten a and phi, but now im the necessity to also know C, what would be the best way to generate c?... more » By jorge  - 1:21pm - 1 new of 1 message

 Calculation of HP Filtered-Series with NaN observations My problem is the following: I want to get the hp-filtered series using this function below. Yet my y-series contains some NaN observations and then the function returns only NaN. How to tackle this issue? Thanks for responding! Philipp The function reads: function [cycle,trend]=hpfilter(y,lambd a)... more » By Philipp  - 12:06pm - 3 new of 3 messages

 Run multiple GUIs in a serial way I have two GUIs. I need to run the first GUI, and then after it's done, the second GUI get started. I try to write a script file like this: gui1; result=data_analysis; gui2; but it does not work. After I close the second gui, everything closed. By Xin He  - 11:02am - 1 new of 1 message

 Real Time DAQ acquisition and Processing Hi, Is there anyway to use session based DAQ to capture real time and process signal simultaneously? I managed to acquire signal continuously but is there a way to log the data as well as to process the data and plot in different plot at the same time? Acquiring Code s = daq.createSession('ni');... more » By Lee Stanley  - 8:21am - 1 new of 1 message

 My God is not dead! Sorry about your's. Always remember: Jesus love's you and so do I! Yes! Each and every one of you! By Brother Love  - 8:11am - 5 new of 5 messages

 add a slider or pan function to ginput I need to be able to do zoom ginput. I saw this and it seems to work. [link] However after do the zoom I need to click some points and after that I need to be able pan the image or have a scroll so I can pull the image to the left and be able to get additional points from image.... more » By Armindo  - 8:10am - 1 new of 1 message

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