Hey guys, I am new to MATLAB GUI. Now I need to build a real-time monitoring system using MATLAB GUI. The first task is to use the DAQ card to acquire the analog signal and plot them out in GUI in real-time. I have used DAQ before, but without the GUI. I got very confused when I read some sources on the internet about writing a callback function to acquire data continuously in GUI. Has somebody done similar thing before and willing to share the program for me to study? Or you have some great source for me to read? Thank you guys. ...

Hello All, I'm working with an aplication that use the matlab engine. I made the C++ program and it is working well in my pc with matlab 2007b, but the same very basic program shows an error when I tried to compile it in a pc with matlab R2010b. The error is about the icuuc32.dll. ¿Why is asking this DLL? How can I solve this?. Thanks¡ ...

What is the best way to import Excel files, with stock data, into Matlab? I’m using Matlab R2010b (64-bit) I’m trying to import historical prices of stock data. Matlab keeps cutting off the header of each column; it gives me only values. I am thinking that this is a data-type-mixing-issue, or whatever it’s called. I have ‘Dates’ in ColumnA, and ‘MSFT’, ‘PWER’, ‘KO’, and ‘SBUX’, in ColumnB-ColumnE. Basically, if I put the Excel file in my Matlab folder and double-click the file, I see the values in a matrix (no dates and no headers), I hit ‘Next’. Then, I see only one option; one radio button is enabled – ‘Create variable matching preview’. The other two options, ‘Create vectors from each column using column names’ and ‘Create vectors from each row using row names’ – both are greyed out. I’ve seen videos, on YouTube and on the Matlab site, where people import excel data and these options are NOT greyed out. No matter what I do, there options are ALWAYS greyed out. The problem is, when I click ‘Finish’ in my ‘Workspace’ I have a variable named ‘data’ all values in a 575x4 matrix, but I have NO DATES and I have NO HEADERS on the columns. All of this seems to go into another variable, called ‘textdata’; all dates and headers ate in textdata. This is VERY inconvenient. I’m trying to analyze some stock data and I have no headers, so I have no idea which stock is which (I can figure it out, but I think Matlab should do this for me). Also, I have no dates corresponding to ...

suppose f(x)=exp(-x^2) then it's fourier transform is also exponential. I'm trying to perform FFT and plot it. I'm using this but it is not showing exponential behavior. please help me with plotting the FFT x=-10:0.01:10; y=exp(-x.^2); N=5000; z=fft(y,N); F=[-N/2:N/2-1]/N; plot(F,z,'b'); >suppose f(x)=exp(-x^2) then it's fourier transform is also >exponential. I'm trying to perform FFT and plot it. I'm using this but >it is not showing exponential behavior. please help me with plotting >the FFT > >x=-10:0.01:10; >y=exp(-x.^2); >N=5000; >z=fft(y,N); >F=[-N/2:N/2-1]/N; >plot(F,z,'b'); > First of all, your z is complex, so using a simple plot command is goin to give you a warning (I have 2008b, I don't remember how older MATLA behaves). Next, to get the "standard" view, with 0 Hz in the middle, yo should apply an fftshift to whatever component you want to view, e.g. plot(F, real(fftshift(z)), 'b'). If you plot the absolute value of (abs(fftshift(z))), you'll get a similar exponential shape, btw. Mark On Aug 12, 11:46=A0am, novis <stands...@gmail.com> wrote: > suppose f(x)=3Dexp(-x^2) then it's fourier transform is also > exponential. I'm trying to perform FFT and plot it. I'm using this but > it is not showing exponential behavior. please help =A0me with plotting > the FFT > > x=3D-10:0.01:10; > y=3Dexp(-x.^2); > N=3D5000; > ...

https://www.facebook.com/photo.php?fbid=231890073597529&set=a.189231197863417.41143.100003296140487&type=1&theater I wanted to create a gui using matlab, which is supposed to look lyk the pic above.. wanted to know, is it possible to have the desire text in a text box? secondly, will it be possible for me to get them scrolled down too ?? i learned about textboxes and annotations too..but i dont think they'll work here. can it all be possible with matlab gui or i'll have to switch over to another language? ...

Does anyone know of a way to get streaming data from external devices into MATLAB and then sending the data to a server and being displayed on the network??? ...

i have some eeg data in bdf format , i want to import data in Matlab can any one help me? Data is downloaded from e'enterface06 multimodal emotion detection. Thanks in advance. I found on file exchange: http://www.mathworks.com/matlabcentral/fileexchange/13070-eeg-bdf-reader ------------------------------------ Maxim Vedenev, Matlab freelancer vedenev@ngs.ru http://simulations.narod.ru/ ...

Hi, I am currently trying to open a new GUI (from a bunch of GUI choices). I am using an if-elseif statement to determine which GUI to open (which is not a issue). The problem I face is that I am unable to figure out which command to use to open the new GUI (and close the existing one)? I looked into previous posts, but they don't seem to be helpful. I tried the following : if handles.variable == 1 %Selection statement to determine which GUI to open uiopen('GUI_2.fig'); %Opens GUI_2.fig file (in the same folder as existing GUI) elseif...... elseif.... end Any idea what to do?? "Krishna" Hi, ..fig is file for you to edit your objects, while you call another gui need to call its mfile. try this , for example you fig file is GUI_2.fig and its corresponding m file will be GUI_2.m in loop you can write as if handles.variable == 1 GUI_2 elseif .... end %% no need to use command uiopen here ...

I am trying to to some computations and I would like to do it in parallel using parfor or by Opening the matlabpool.. as the current implementations is too slow: result=zeros(25,16000); for i = 1:length(vector1) % length is 25 for j = 1:length(vector2) % length is 16000 temp1 = vector1(i); temp2 = vector2(j); t1 = load(matfiles1(temp1).name) %load image1 from matfile1 t2 = load(matfiles2(temp2).name) % load image2 from matfile2 result(i,j)=t1.*t2 end end It work fine but I would really like to know if there is a way to speed thing up ... Thanks a lot in advance! ...

Hello.. I have an excel sheet in it real time sensor data. I need to plot the data in a graph on matlab! please help me what to do.. i dont know how to transfer this data to matlab.. it huge.. "aya" wrote in message <ju3fmb$r4k$1@newscl01ah.mathworks.com>... > Hello.. > > I have an excel sheet in it real time sensor data. I need to plot the data in a graph on matlab! please help me what to do.. i dont know how to transfer this data to matlab.. it huge.. xlsread will get the data into Matlab. Barry "Barry Williams" <barry.r.williamsnospam@saic.com> wrote in message <ju3po4$656$1@newscl01ah.mathworks.com>... > "aya" wrote in message <ju3fmb$r4k$1@newscl01ah.mathworks.com>... > > Hello.. > > > > I have an excel sheet in it real time sensor data. I need to plot the data in a graph on matlab! please help me what to do.. i dont know how to transfer this data to matlab.. it huge.. > > xlsread will get the data into Matlab. > Barry Oh thanks alot.. :) ...

can you help with my project? this is about a program that will count up or count down if the respective push button is pressed. I dont know how to do the program., just the GUI design with the text and the 2 push buttons. PLS., HELP me.. :C "Kent " <devilinious_inferno666@yahoo.com> wrote in message news:jkkejc$g2n$1@newscl01ah.mathworks.com... > can you help with my project? > > this is about a program that will count up or count down if the respective > push button is pressed. I dont know how to do the program., just the GUI > design with the text and the 2 push buttons. > > PLS., HELP me.. :C It sounds like you've set up the layout for your GUI, now you just need to program the guts. http://www.mathworks.com/help/techdoc/creating_guis/f10-998197.html http://www.mathworks.com/help/techdoc/creating_guis/f16-998197.html -- Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com ...

I want to display some details of a picture in a textarea in Matlab GUI... A Text area whose width is fixed and height may vary according to the text in textarea. How Can I do this... Please Help Me... Thanks... "Tanesh Kumar Kevlani" <tk.kevlani@gmail.comm> wrote in message news:joqjto$b0r$1@newscl01ah.mathworks.com... > I want to display some details of a picture in a textarea in Matlab > GUI... > A Text area whose width is fixed and height may vary according to the text > in textarea. > How Can I do this... If you're using GUIDE, use a Static Text box. http://www.mathworks.com/help/techdoc/creating_guis/f8-998368.html#f8-999627 If you're creating your GUI programmatically, create a UICONTROL whose Style property is 'text'. http://www.mathworks.com/help/techdoc/ref/uicontrol.html -- Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com ...

good evening all I have a GUI which orders a model of simulink, however I have to try to build a GUI which orders several models of simulink (links), but I finely find difficulties in the popone and callback! thus how to make a GUI which contains pop-up menu(links) which orders models of simulink? I votres assistances waits ...

Hi,I'm brand new for matlab and I need to create a gui with a 'browse' button and upload and display an image in gui.I have used th following code. [FileName,PathName] = uigetfile('*.png;*.JPG;*.GIF;*.TIF','Select the Image file') if FileName ~= 0 fullName = fullfile(PathName,FileName); end A = imread(fullName); imshow(A, 'Parent', handles.axes1); Its working but now I want to display the browsed file path in the same gui.what should i do? I have tried using a text box but its not working.Is there any other component that can be used for this purpose? thank you for any help... :) "Menaka " <menaka.ariyarathne@yahoo.com> wrote in message news:jnno7q$mvu$1@newscl01ah.mathworks.com... > Hi,I'm brand new for matlab and I need to create a gui with a 'browse' > button and upload and display an image in gui.I have used th following > code. > > [FileName,PathName] = uigetfile('*.png;*.JPG;*.GIF;*.TIF','Select the > Image file') > if FileName ~= 0 > fullName = fullfile(PathName,FileName); > > end > A = imread(fullName); > imshow(A, 'Parent', handles.axes1); > Its working but now I want to display the browsed file path in the same > gui.what should i do? > I have tried using a text box but its not working.Is there any other > component that can be used for this purpose? > thank you for any help... :) I would use a UICONT...

Many of you who post to this newsgroup are also regular contributors to the MATLAB Central File Exchange. Look for your favorite contributors on our File Exchange Author Profile page. You can read their profiles and see pictures: <http://www.mathworks.com/matlabcentral/reports/fileexchange/allProfiles/> In a random drawing, we recently awarded MATLAB jackets to three File Exchange authors with profile pages: Michele Giugliano, Andrey Egin, and Denis Gilbert. You can win a jacket, too. Just submit a new file to the File Exchange or update your author profile by December 2003 for a chance to win one of four MATLAB jackets. See the jacket below: <http://www.mathworks.com/matlabcentral/images/jeff3.jpg> Here are some interesting File Exchange facts: - Since its inception in 2001, visitors have downloaded more than 1.25 million submissions from the File Exchange. - In September 2003 alone, visitors downloaded 80,085 files, an average of 2670 a day! .... what if the prize was a free copy of the next version of Matlab :-) majb Min Poh wrote: ....or an offer for employment... aj "bourassa" <bourassa-m@rmc.ca> wrote in message news:3f9d507d$1@rmcnt03a.rmc.ca... > ... what if the prize was a free copy of the next version of Matlab :-) > > majb > > Min Poh wrote: > ...

Hello everyone, I have a matlab in class exercise due in few days. I am new to matlab and the instructions provided with the assignment is minimal. Can Someone help me with the basic understanding as in how can I map the problem's solution to matlab script ? I am not able to post question here as it is a jpeg file. Please let me know and then we can discuss further. ...

My problem with matlab script node is related to calling function in matlab. I created an m-file function that takes an imput temperature (from DAQ) and defines a material property. My matlab script node doesn't seem to recognize my function. I have placed the function in the folder the vi is currently located, but it doesn't read it. How do I get matlab script node to read the functions I create in matlab? Add the directory to matlab path, or call the .m file with it full name ( D:\..... \myfile.m) Let me clarify, I have pasted my matlab code into the matlab scrip node. In this code, I have called a subfunction that I have created. Example k(n)=k_c(T(n)) where k_c is a subfunction I have created. How do I get my code in the node to sucessfully read the subfunction k_c? As indicated, you need to add the directory where the .m file containing the function resides to the list of paths that are read in. This is your startup.m file. The other option is to do a "cd" command prior to calling your function to change to the directory where the .m file containing the function resides. Thanks for reiterating the information. My matlab script node is working properly. I had never used the "cd" command in matlab. I always set the working directory when I open the program, and put all the m files into t...

Hi, I met a problem with plotting a figure in matlab. a = peaks(100); clf hold on pcolor(a) shading interp [c,h] = contour(a,'k'); clabel(c,h) After running this code, the result of clabel is not visible. Could anyone give me some advice on how to show it? An extended question is, in matlab, is it possible to change the layer of a figure object by SET or other functions? Any help would be appreciated. Thanks! ...

I have an matlab array A = [ 20 25; 40; 95]. I need to change the elements of the array such that the smallest becomes 1 and the largest becomes 256 and the rest of the values take a value according to the range. In reality the array A will be much larger than 2 by 2. Does matlab have something built in that can do this? 1 + (A-min(A(:)))*(255 / (max(A(:))-min(A(:)))) On May 26, 6:06=A0am, "Aron Sceidt" <sigarr...@gmail.com> wrote: > I have an matlab array A =3D [ 20 25; 40; 95]. I need to change the eleme= nts of the array such that the smallest becomes 1 and the largest becomes 2= 56 and the rest of the values take a value according to the range. > > In reality the array A will be much larger than 2 by 2. Does matlab have = something built in that can do this? ---------------------------------------------------------------------------= -- A_1_to_256 =3D 255*mat2gray(A) + 1 ...

i have a loop which iterates for 97 times and there are two arrrays 1)frequency[1024] 2)strength[1024] these arrays change values after each iteration of the loop. so before its value changes i need to put them in a structure.For instance the structure would be something like s(1).frame=1 %this will show the iteration no. s(1).str=strength s(1).freq=frequency now i need 97 such structures say s(1) to s(97) in an array. my program has to be something like for i=1:98 frequency[1024]=[some values] strength[1024]=[somevalues] s(i).frame=1 %this will show the iteration no. s(i).str=strength s(i).freq=frequency end i think i am already answering my question, still i need some1 to confirm it. What i want to know is how can my structure 's' hold all 97 sets of its field values. am i creating an array of structure by varying s(i) along with the loop iteration. please help me. "sayantani" wrote in message <jj8fbi$380$1@newscl01ah.mathworks.com>... > i have a loop which iterates for 97 times and there are two arrrays > > 1)frequency[1024] > 2)strength[1024] > > these arrays change values after each iteration of the loop. so before its value changes i need to put them in a structure.For instance the structure would be something like > > s(1).frame=1 %this will show the iteration no. > s(1).str=strength > s(1).freq=frequency > now i need...

Hi , I have installed MATLAB 7, now if I want to install 6.5 then how to change the version of MATLAB files which are made in version 7, as some files of newer version may not work in older version? "rajesh " <rajesh.shaw@gmail.com> wrote in message news:ff9e6t$26v$1@fred.mathworks.com... > Hi , > I have installed MATLAB 7, now if I want to install 6.5 > then how to change the version of MATLAB files which are > made in version 7, as some files of newer version may not > work in older version? There is NO version number for your m files when you create them? they are just plain text file. But If you create an .m file which runs ok under version 7, and you want this file to run ok under earlier versions (assuming it does not), then you need to make the necessary changes in your m file to make it run under earlier versions (this is sometimes called backporting). But if your m file calls function(s) that are part of Matlab and those functions only exist in version 7 and not in the erarlier version, then you might be out of luck there. I am not sure why you want to do this. The common practice is to go the other way. Any reason why, if you have version 7 you want to use version 6.5? may be if you give the reason it would help to give you a better advice. Nasser On Oct 18, 10:13 pm, "Nasser Abbasi" <n...@12000.org> wrote: > "rajesh " <rajesh.s...@gmail.com> wrote in message > > ne...

My domain or data size is 500* 101* 101, since it is very huge for me to do the visualisation, so I need to reduce it 250*50*50 size, how can we do it in MATLAB. I highly appreciate if anyone can help me on this problem. "Maverick " <monika.chauhan@mavs.uta.edu> wrote in message <i9shqm$q44$1@fred.mathworks.com>... > My domain or data size is 500* 101* 101, since it is very huge for me to do the visualisation, so I need to reduce it 250*50*50 size, how can we do it in MATLAB. > I highly appreciate if anyone can help me on this problem. It depends on how you want to down sample this: Do you want a mean? a median? a straight extraction? A straight extraction is the easiest: M2 = M1(1:2:end,1:2:end,1:2:end); Hi Monika Your large dataset has a bit more than 5 million data points. However, even your hypothetical "small" dataset has 625K data points. One way or another, you're going to need to use some kind of model to approximate your data and then use visualization techniques to describe this model. For example, lets assume that your data existed in a 3D space. You might be able to represent your data as a surface, where the shading represented confidence bounds. Alternatively, you might need to plot a set of three dimensional shells. Also, from the looks of things, you're dealing with a four dimensional dataset. You're going to need to decide how you want to visualize 4d data in...

Hi, i wish to display several graph plots each in different Figure windows at once, However, each time i plot(), the new plot will be displayed over the original plot. I know u can use subplot() to show them all in the same figure. But was just wondering how u could output several different figure plots at once, instead of overwriting the previous display. any helps greatly appreciated, thanks! jenny hi jenny... try using hold on; command.... may it can help... Jenny wrote: > > > Hi, > > i wish to display several graph plots each in different Figure > windows at once, > > However, each time i plot(), the new plot will be displayed over > the > original plot. I know u can use subplot() to show them all in the > same figure. > > But was just wondering how u could output several different figure > plots at once, instead of overwriting the previous display. > > any helps greatly appreciated, thanks! > > jenny hi, please use the command Pause figure before using plot Hope this helps shriram > > i wish to display several graph plots each in different Figure > windows at once, > > However, each time i plot(), the new plot will be displayed over the > original plot. I know u can use subplot() to show them all in the > same figure. > > But was just wondering how u could output several different figure > plots at once, instead of overwriting the previous display. > Just use the fi...

Hi all. I am trying to plot the temperature distribution in an rectangle. I have a matrix Z that contains the temperatures for different points on the object. For a 3x3 grid I would have: Z=[22.12 23.46 25.25; 24.34 25.23 23.24; 23.24 23.22 23.98] I want to make a plot of discrete points, where the colors of each point indicate the temperature (i.e. the hotter points appear more red, cooler points blue etc..). Any ideas? The contour plots don't seem to do what I am looking for. Thanks! Michael Hammer: Just display it using imshow, image, or imagesc. Then use the colormap function, which has presets for the color map you're looking for. Regards, ImageAnalyst Thanks, that did exactly what I wanted! Cheers "Michael Hammer" <txtimmer87@gmail.com> wrote in message <gsg2gg$opt$1@fred.mathworks.com>... > Hi all. > > I am trying to plot the temperature distribution in an rectangle. I have a matrix Z that contains the temperatures for different points on the object. For a 3x3 grid I would have: > > Z=[22.12 23.46 25.25; 24.34 25.23 23.24; 23.24 23.22 23.98] > > I want to make a plot of discrete points, where the colors of each point indicate the temperature (i.e. the hotter points appear more red, cooler points blue etc..). Any ideas? The contour plots don't seem to do what I am looking for. > > Thanks! ...

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