billjosephson's articles:

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Is R2007a really multithreaded? What's coming in future versions? 1 43 (6/14/2007 6:13:01 AM) comp.soft-sys.matlab Saw comments saying the computation was NOT multithreaded even though there is the option to tell it to use multiple cores and I read the BLAS was now able to be done on multiple cores. Which is true? Can you p... BillJosephson

Could somebody run this little matlab benchmark on a woodcrest? 10 27 (2/20/2007 7:38:06 AM) comp.os.linux.misc Hi. I have a dual CPU Opteron 248 2.2 ghz w/ 6 gigs of ram, and a dual CPU Xeon 5000 series, 3ghz, 8 gigs of ram. The Opteron takes 22 seconds and the Xeon takes 26 seconds to do this. I'm thinking about a new ... BillJosephson

Which OS will come to dominate? 4 36 (2/11/2007 4:45:52 PM) comp.sys.palmtops I'm interested in starting a business programming for PDAs, although maybe they will be replaced by smartphones? But I haven't been keeping up with the industry lately. Anyway, which OS do you think I should s... BillJosephson

If I write java program for Windows, will it run on a PDA or Cell Phone? 7 15 (1/20/2007 10:24:10 PM) comp.lang.java.programmer I guess that says it. I want to write a tool to use on my PC, but I would like it to run on Linux, and a Palm or some other PDA, or a Cell Phone. It would be a pretty simple program. Thanks a lot... ... BillJosephson

Are c++ features a subset of java features? 144 38 (1/19/2007 2:31:03 PM) comp.lang.c++ Want to do OOP. Does c++ have all the abilities of java, or is it some subset? Thanks... ... BillJosephson

Possible to use Codewarrior 7 to program under WinXT? 34 27 (1/15/2007 7:14:43 PM) comp.lang.c++ Hi, I want to write a program in Java or C++, and just discovered on my bookshelve Codewarrior 7. It says Windows 95, 98, NT, 2000, ME. Can I develop a command line application that will work on my XT machine?... BillJosephson

string not accepted by switch 3 26 (1/2/2007 9:52:16 AM) comp.soft-sys.matlab There must be something I still don't understand about strings in matlab, or how switch works. It seems like the following code should work, in fact, it is directly from the matlab demo of using GUIDE for crea... BillJosephson

declare/initialize array in constructor? 5 20 (12/14/2006 5:07:26 AM) comp.lang.java.programmer Hello. I have a class which will need string arrays. Normally I declare them as instance variables in the class. But, can these instance variables be part of the constructor? Here is an example. (1) shows how I... BillJosephson

How to put vertical line in graph? 2 26 (12/2/2006 5:01:24 AM) comp.soft-sys.matlab I'm trying to put vertical dotted lines in a graph of a signal, to mark the beginning and end of a window of the signal. Even solid light colored lines would work fine. Is this possible? I have been completely ... BillJosephson

how to use jswat in jedit? 0 40 (11/28/2006 12:44:26 PM) comp.lang.java.programmer Hello, OK, so I have jEdit with the jswat debugger installed. I can see jswat. There is a java program loaded into the editor. But, it seems as if the debugger is unaware of it. The go button and others are gra... BillJosephson

billjosephson's replies:

Items(16) /2 Next >> Last >|

time base, real time, wave generation, fft 4 13 (11/24/2006 5:39:35 AM) comp.soft-sys.matlab In help, Waveform Generation: Time Vectors and Sinusoids, it states A variety of toolbox functions generate waveforms. Most require you to begin with a vector representing a time base. Consider generating data... billjosephson (77)

problem with fft and actual time (matlab) 8 26 (11/24/2006 6:55:41 AM) comp.dsp Hi, for the following code in matlab: t = (0:0.00048828:1); y = sin(2*pi*12*t); z = abs(fft(y)); power = z(12) which I hope produces a second of data for a sine wave at 12 Hz, sampled at 2048 per second, and... billjosephson (77)

help understanding fft error 4 18 (11/26/2006 6:44:47 AM) comp.soft-sys.matlab % What do I not understand, when I expect this code to produce two % waveforms of the same 12 Hz frequency, and identical fft peaks? % sampling is 2048/sec; 1/2048 = .00048828 % my code: t1 = (0:0.00048828:1)... billjosephson (77)

help understanding fft error 4 24 (11/26/2006 6:49:42 AM) comp.dsp % What do I not understand, when I expect this code to produce two % waveforms of the same 12 Hz frequency, and identical fft peaks? % sampling is 2048/sec; 1/2048 = .00048828 % my code: t1 = (0:0.00048828:1)... billjosephson (77)

this fft code doesn't make sense 30 27 (11/26/2006 6:58:50 AM) comp.dsp % What do I fail to understand, when I expect this code to produce two % waveforms of the same frequency, and identical fft peaks? t1 = (0:0.00048828:1); y1 = sin(2*pi*12*t1); t10 = (0:0.00048828:10); y10 = ... billjosephson (77)

string not accepted by switch 3 26 (1/2/2007 9:52:16 AM) comp.soft-sys.matlab There must be something I still don't understand about strings in matlab, or how switch works. It seems like the following code should work, in fact, it is directly from the matlab demo of using GUIDE for crea... billjosephson (77)

Possible to use Codewarrior 7 to program under WinXT? 34 27 (1/15/2007 7:14:43 PM) comp.lang.c++ Hi, I want to write a program in Java or C++, and just discovered on my bookshelve Codewarrior 7. It says Windows 95, 98, NT, 2000, ME. Can I develop a command line application that will work on my XT machine?... billjosephson (77)

Are c++ features a subset of java features? 144 38 (1/19/2007 2:31:03 PM) comp.lang.c++ Want to do OOP. Does c++ have all the abilities of java, or is it some subset? Thanks... ... billjosephson (77)

If I write java program for Windows, will it run on a PDA or Cell Phone? 7 15 (1/20/2007 10:24:10 PM) comp.lang.java.programmer I guess that says it. I want to write a tool to use on my PC, but I would like it to run on Linux, and a Palm or some other PDA, or a Cell Phone. It would be a pretty simple program. Thanks a lot... ... billjosephson (77)

Could somebody run this little matlab benchmark on a woodcrest? 10 27 (2/20/2007 7:38:06 AM) comp.os.linux.misc Hi. I have a dual CPU Opteron 248 2.2 ghz w/ 6 gigs of ram, and a dual CPU Xeon 5000 series, 3ghz, 8 gigs of ram. The Opteron takes 22 seconds and the Xeon takes 26 seconds to do this. I'm thinking about a new ... billjosephson (77)