In Octave 3.8.1 I'm able to export a stereo wave file using the command below
wavwrite([w1(:) w2(:)],44100,16,'/tmp/testfile.wav');
I'm trying to get it to work with audiowrite using octave 4.0 see below but I get a audiowrite: wrong argument name error
audiowrite('/tmp/testfile2.wav',[w1(:) w2(:) w3(:) w4(:)],44100,16)
and
audiowrite('/tmp/testfile2.flac',[w1(:) w2(:) w3(:) w4(:)],44100,16)
It says audiowrite can have up to 256 channels am I incorrect about this?
Thanks
Try:
audiowrite('/tmp/testfile2.wav',[w1(:) w2(:) w3(:) w4(:)],44100,'BitsPerSample',16)
or
audiowrite('/tmp/testfile2.wav',[w1(:) w2(:) w3(:) w4(:)],44100).
16 Bits per sample is default. Check out the documentation here for more information.
Related
I'm using the following script:
http://se.mathworks.com/matlabcentral/fileexchange/48576-circulargraph
to create an schemaball from a correlation matrix (my related earlier question can be found here). When I try to run the script (e.g. example.m file) I get the following error (click on the image to enlarge it):
I'm using Matlab R2014a. What do I need to do to get this working?
As #EBH already mentioned it seems I can't use this script on Matlab R2014a.
I want to use fig2texPS to export plots from MATLAB to LaTeX. I copied the the script to D:\Eigene Dokumente\MATLAB\fig2TexPS and added this folder as a path in MATLAB. Unfortunately, I receive the following error:
>> fig2texPS()
Undefined function 'find' for input arguments of type 'matlab.graphics.chart.primitive.Line'.
Error in fig2texPS (line 526)
lsh = double(find(handle(lshandles),'-class','graph2d.lineseries')); % find plots
PS: I use a version of the script which was updated in order to work with pdtlatex (http://pastebin.com/xK6KxxBT) that I found in the MATLAB Central File Exchange. The same error also occurs when I use the original script.
This might not be the answer you are looking for, but there is the marvelous matlab2tikz that does the job of conversion of figures quite nicely, which you could use as an alternative to fig2texPS.
I also use the function fig2texPS.m and it works very well. It might be an answer for your question to use an older version of Matlab. I am using 2013b and it works. While I have tried this function with Matlab 2015a, I was getting the same error message.
I hope my answer helps you with your problems.
I am new to Matlab and trying to save my current figure to file. So, I have followed the official documentation at http://www.mathworks.co.uk/help/matlab/ref/savefig.html#inputarg_h and entered the following into Matlab:
figure;
surf(peaks);
savefig('PeaksFile.fig');
close(gcf);
However, I get the following error:
Undefined function 'savefig' for input arguments of type 'char'.
If I type in:
help savefig
I get the following error:
savefig not found.
Any ideas on what's going on? I would have thought that savefig comes with all releases of Matlab rather than requiring any add-ons. The version of my Matlab is 2013a.
It looks as though savefig is not implemented in Matlab version earlier than 2013b (from some experimentation and a comment at the end of http://www.mathworks.com/matlabcentral/fileexchange/10889-savefig). Instead, use saveas(h,'filename.ext'), which is documented here http://www.mathworks.co.uk/help/matlab/ref/saveas.html and is certainly included in 2012a.
You're using R2013a, while savefig was released in R2013b. I can't test if the functionality is identical as I don't have R2013b (or newer) on this computer, but you might try the savefig-function on the File Exchange, or other alternatives available in the R2013a-release.
The two answers are great. Another option which I believe has been around for many, many years is to use the print command:
print -f1 -djpeg bob.jpg
The -f1 is the figure number and obviously bob.jpg is the filename to which you want to write. I have code going back to 2007 using that but I am sure it goes back earlier than that. So it should work with pretty much any version you are using.
For that matter, using print, you can write PS, EPS, TIFF, PNG as well as JPG.
i am trying to import a .tif image into matlab with the following code
>> aa = imread('house.tif');
i get the error
Error using rtifc
TIFF library error: '_TIFFVSetField: C:\Users\user\Documents\MATLAB\house.tif: Null count
for "Tag 34022" (type 1, writecount -3, passcount 1).'.
Error in readtif (line 49)
[X, map, details] = rtifc(args);
Error in imread (line 434)
[X, map] = feval(fmt_s.read, filename, extraArgs{:});
as i am using matlab for the first time in my life i really have no idea what this error means. Please help is required in this matter.
MATLAB R2012b has a bug and it cannot read TIFF files properly. More information can be found here: http://www.mathworks.com/matlabcentral/newsreader/view_thread/326232
Probably Matlab does not support the specific type of tif. In Matlab's defence, tif is not an easy file-format to read. It supports plenty of compression schemes, multiple pages and who knows what. I'd convert the tif to png and go with that.
Update: A quick Google search revealed that "rtifc" is a Matlab mex-wrapper around libtiff. Your error appears to come from libtiff. If the latter can't read it, your tif will probably be problematic for a lot of other applications too.
Another thing you could try is use the implementation tiffread from François Nedelec's group at EMBL. http://www.embl.de/ExternalInfo/nedelec/misc/matlab/tiffread29.m. It's heavily used by biology folks all over the world. I've been using it for many years.
Using the adftest function in MATLAB's econometrics toolbox, I'm receiving the following error:
>> [h1,pVal1] = adftest(y1,'model','ARD')
Error using lagmatrix (line 25)
lagmatrix: wrong # of input arguments
Error in adftest>runReg (line 705)
yLags = lagmatrix(y,0:(testLags+1));
Error in adftest (line 417)
testReg = runReg(i,y,testT,testLags,testModel,needRegOut);
y1 is a <41x1> vector of doubles.
Has anyone received this error or have any thoughts on what the issue is? I am using this code right out of the box so I'm not sure what is going on. I'd post to MATLAB's site, but it is down for maintenance.
This is either a bug in Matlab, in which case you should submit it on the Matlab support site. Before you do that, you should check that you don't have a function lagmatrix on your path that shadows the built-in function. Type
which lagmatrix
on the command line. If the path does not point to your Matlab installation, you should move lagmatrix off the Matlab search path.
Also note that y1 should not contain all NaN, or be otherwise degenerate, so you may want to check the function using the sample data as suggested in the help to be sure it's a bug and not just your data.
I had the same problem with this function. In my case, the problem was the function lagmatrix (older version) in my MATLAB path and the adftest function was the newest version. The soluction was delete the older version of lagmatrix.