Re: [Discuss-gnuradio] how to use FFT without grc block
On 01/24/2014 02:45 AM, Nasi wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Nasi, part of learning GNU Radio is learning to read the documentation. You're pointing to a specific object deep inside the guts of GNU Radio. There will be no beginner-level documentation for these kinds of objects, probably ever. If you followed the docs through the navigation Modules - Fourier Analysis, you'd see three blocks available for FFTs. All they do is calculate an FFT -- there is not much to say here. The assumption on this page is that you know how blocks work, and what an FFT is. The page you pointed to is not redundant, whether or not it's hopeless is of course matter of debate. But it has all you need to calculate an FFT: The object you need, the functions you need to call etc. Here's all you really need: compute FFT. The input comes from inbuf, the output is placed in outbuf. Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
Does the function referred to have the ability to read in a File Sink binary file? Paul B. Huter On Jan 24, 2014 7:00 AM, Martin Braun martin.br...@ettus.com wrote: On 01/24/2014 02:45 AM, Nasi wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Nasi, part of learning GNU Radio is learning to read the documentation. You're pointing to a specific object deep inside the guts of GNU Radio. There will be no beginner-level documentation for these kinds of objects, probably ever. If you followed the docs through the navigation Modules - Fourier Analysis, you'd see three blocks available for FFTs. All they do is calculate an FFT -- there is not much to say here. The assumption on this page is that you know how blocks work, and what an FFT is. The page you pointed to is not redundant, whether or not it's hopeless is of course matter of debate. But it has all you need to calculate an FFT: The object you need, the functions you need to call etc. Here's all you really need: compute FFT. The input comes from inbuf, the output is placed in outbuf. Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
And the problem is in that input part. It is not clear what is inbuf... I create gr_complex vector and want to input it into fft. It does not work in any way. There are alot of questions are still open. Coder is a good coder if his code is readable first. Anyone one can design a confusing language. Sent from Mail.Ru app for iOS Freitag, 24. Januar 2014 13:59 +0100 from Martin Braun martin.br...@ettus.com: On 01/24/2014 02:45 AM, Nasi wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Nasi, part of learning GNU Radio is learning to read the documentation. You're pointing to a specific object deep inside the guts of GNU Radio. There will be no beginner-level documentation for these kinds of objects, probably ever. If you followed the docs through the navigation Modules - Fourier Analysis, you'd see three blocks available for FFTs. All they do is calculate an FFT -- there is not much to say here. The assumption on this page is that you know how blocks work, and what an FFT is. The page you pointed to is not redundant, whether or not it's hopeless is of course matter of debate. But it has all you need to calculate an FFT: The object you need, the functions you need to call etc. Here's all you really need: compute FFT. The input comes from inbuf, the output is placed in outbuf. Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Nasi, Inbuf is the input buffer. It is a C++ pointer to a gr_complex. That is the place where you put your input. As is described on the doxygen page. It is assumed that when you try to use a C++ framework, you are able to understand basic C++ concepts. Again, I'd strongly agree with Martin: This is using internal functionality of GNU Radio. You must be able to read the source code to effectively employ it. Sincerely, Marcus On 24.01.2014 15:55, Nasi wrote: And the problem is in that input part. It is not clear what is inbuf... I create gr_complex vector and want to input it into fft. It does not work in any way. There are alot of questions are still open. Coder is a good coder if his code is readable first. Anyone one can design a confusing language. Sent from Mail.Ru app for iOS Freitag, 24. Januar 2014 13:59 +0100 from Martin Braun martin.br...@ettus.com: On 01/24/2014 02:45 AM, Nasi wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Nasi, part of learning GNU Radio is learning to read the documentation. You're pointing to a specific object deep inside the guts of GNU Radio. There will be no beginner-level documentation for these kinds of objects, probably ever. If you followed the docs through the navigation Modules - Fourier Analysis, you'd see three blocks available for FFTs. All they do is calculate an FFT -- there is not much to say here. The assumption on this page is that you know how blocks work, and what an FFT is. The page you pointed to is not redundant, whether or not it's hopeless is of course matter of debate. But it has all you need to calculate an FFT: The object you need, the functions you need to call etc. Here's all you really need: compute FFT. The input comes from inbuf, the output is placed in outbuf. Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4oB0AAoJEAFxB7BbsDrLEsAH/0UOFkBA20wzgzAOUIoZZr6J HV3C4GGp8GigKV+U3aVm2vW/zZKsnpU/dyzstOnzN/PBYvYiMn8gARkMtIvo6i8h +iKP8l8PUH9NOWe/yKLxMIr/DNfbITKR/sGQ3RX8Wihdm8xcOVmORIG1rTzBlTOu sNa1/19KgLGxqHeb1cjGcXxSq9wJY7Dp+2XRjsaOaRtzh+uNzmaDdV7lvNCL3UDA DStfOCu4BSTFoeB8JND1An1SF83LeF5ly4vv8HVezeyENh9Pqz1Ys/pabsjjq3LW FXU2XDQcRrxH2CyfWzPUQwTpzWB+ziYucGH2eQGjxqTTVTWjtuxLEn9cbzteJL4= =MKKi -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
Hi Nasi, And the problem is in that input part. It is not clear what is inbuf... I create gr_complex vector and want to input it into fft. It does not work in any way. There are alot of questions are still open. You can look at fft.cc and fft_vcc_fftw.cc. It is quite clear how the FFTW library is called by GNU Radio. The documentation of FFTW is also quite good. You can look up how to use a plan to calculate forward/reverse FFTs. Coder is a good coder if his code is readable first. Anyone one can design a confusing language. With all due respect, Nasi, please refrain from biting the hand that feeds, and then asking for more. Happy hacking! best, aditya ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Paul, no. It does an FFT and nothing else (aside offering to apply a window); please read the doxygen or have a look at the code. Both is extremely short and to the point ;) Anyway, file_sink binary files are not something special. They just store floating point values the same way they are stored in RAM. Assuming you can use the FFTW, you can simply use the C standard lib's open() to open a file, and read() the desired amount of bytes (that is, number of floats*4 or number of complexes*8) directly into the buffer that you fftw_malloc'ed for usage in the fourier transform. Hope that I could help you! Marcus On 24.01.2014 14:57, Paul B. Huter wrote: Does the function referred to have the ability to read in a File Sink binary file? Paul B. Huter On Jan 24, 2014 7:00 AM, Martin Braun martin.br...@ettus.com wrote: On 01/24/2014 02:45 AM, Nasi wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Nasi, part of learning GNU Radio is learning to read the documentation. You're pointing to a specific object deep inside the guts of GNU Radio. There will be no beginner-level documentation for these kinds of objects, probably ever. If you followed the docs through the navigation Modules - Fourier Analysis, you'd see three blocks available for FFTs. All they do is calculate an FFT -- there is not much to say here. The assumption on this page is that you know how blocks work, and what an FFT is. The page you pointed to is not redundant, whether or not it's hopeless is of course matter of debate. But it has all you need to calculate an FFT: The object you need, the functions you need to call etc. Here's all you really need: compute FFT. The input comes from inbuf, the output is placed in outbuf. Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4oXjAAoJEAFxB7BbsDrLT+UH/0dXb1mqAegyPyhjdXJn27rC wO5VBX0n8qzAn4FJ1/5VWrZ8/pYmABI4nGqU1qkEyiCWyQm+VLaCTMH8vJnLVB+6 Nd8iB4YHOuIPn8xTZfFo5sgN26ft1XbtmbE8JQUWfnMdnSKOUQgss+MPff8rAr15 hPzd4xgJV6qr7DrHiZZjJ4rv5aVUR1BkBi3rfaAwXcvMj+5qR2iRHOSVA/o3oMFA 5BWihDNtiX2je9l9io2zQEy9uYMC8X11mQ2rt8fqkNiLRZk8mnzDEzL9ZSz+sWfZ 9L2vM6Y9ZeF6aqGHTIWRL1Cv1QnGTTLfKHnaufjWwP8nwFlwqABIXn0StNAsGKY= =hF6R -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
On 01/24/2014 09:55 AM, Nasi wrote: Coder is a good coder if his code is readable first. Anyone one can design a confusing language. A programmers job in documentation isn't to teach you the language the code is written in. It is assumed that the reader knows the language already. Imagine that in spoken languages, we all had to include massive amounts of clarifying sub-texts every time we spoke, because the other party may not be familiar *at all* with our spoken languages. The www.gnuradio.org website has lots of overall architectural information, I'd suggest you spend some time at it. The Doxygen docs aren't intended to be tutorials. They are more like a quick reference document that can help you with calling parameters, etc. But from your questions, I'm getting that you have only the vaguest notion of how Gnu Radio is architected, and are confused as a result. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
you guys do not get at all what is in there. You are just confronting me, and accusing me not being an expert. If I agree on not being an expert, will anyone here be happier? FFTW documentation is not helpful, you guys have been working on this for ages, now you can't see the challenge in that. Of course, I will write my code sooner or later, but you guys also can do smt. to improve it. For an near example, look at any any cc language documentation. There is no book that written for an expert. The simpler is better in writing. Again, it is up to you, more people understand, more users will implement your code. It is a kind of marketing. Apart from all, I respect all what have done up to now. Пятница, 24 января 2014, 10:03 -05:00 от Aditya Dhananjay adi...@cs.nyu.edu: Hi Nasi, And the problem is in that input part. It is not clear what is inbuf... I create gr_complex vector and want to input it into fft. It does not work in any way. There are alot of questions are still open. You can look at fft.cc and fft_vcc_fftw.cc. It is quite clear how the FFTW library is called by GNU Radio. The documentation of FFTW is also quite good. You can look up how to use a plan to calculate forward/reverse FFTs. Coder is a good coder if his code is readable first. Anyone one can design a confusing language. With all due respect, Nasi, please refrain from biting the hand that feeds, and then asking for more. Happy hacking! best, aditya -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
On 01/24/2014 11:32 AM, Nasi wrote: instead of helping, you like to embarrass me... in my first email, I asked for a tutorial not a short reference. Well, how about here: http://gnuradio.org/doc/doxygen/ And here: http://gnuradio.org/redmine/projects/gnuradio/wiki/HowToUse And here: http://gnuradio.org/redmine/projects/gnuradio/wiki/WhatIsGR And here: http://gnuradio.org/redmine/projects/gnuradio/wiki/TutorialsWritePythonApplications And here: http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ And here: http://www.youtube.com/playlist?list=PL618122BD66C8B3C4 Пятница, 24 января 2014, 10:33 -05:00 от Marcus D. Leech mle...@ripnet.com: On 01/24/2014 09:55 AM, Nasi wrote: Coder is a good coder if his code is readable first. Anyone one can design a confusing language. A programmers job in documentation isn't to teach you the language the code is written in. It is assumed that the reader knows the language already. Imagine that in spoken languages, we all had to include massive amounts of clarifying sub-texts every time we spoke, because the other party may not be familiar *at all* with our spoken languages. The www.gnuradio.org http://www.gnuradio.org website has lots of overall architectural information, I'd suggest you spend some time at it. The Doxygen docs aren't intended to be tutorials. They are more like a quick reference document that can help you with calling parameters, etc. But from your questions, I'm getting that you have only the vaguest notion of how Gnu Radio is architected, and are confused as a result. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org sentmsg?composeTo=discuss%2dgnura...@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Nasi, this has totally gotten out of hand. Please stop. We still have no idea of what you're trying to do. We'd usually really like to help you, but all help we offered so far was not really welcomed by you *at all*. FFTW documentation is not helpful, you guys have been working on this for ages, now you can't see the challenge in that. Ok, as Martin and Aditya said, when you want to do an FFT in a C++ software of your own, we must expect you to both know how what an FFT actually does and how to use buffers in C/C++. As it seems again, you're turning to us to help you in understanding basic concepts that we, as a helping community, must assume you try to work on yourself. If you're having a minor problem with C++ in the context of GR, just ask. If you have a question regarding the way GR works that you can not solve by reading the obvious information sources (that is, www.gnuradio.org), just ask. If you can't use the supplied functionality because you simply are not yet good enough at C++, we can't be the ones to teach you that. This is discuss-gnuradio, not cplusplus-beginners-help. Of course, I will write my code sooner or later, but you guys also can do smt. to improve it. Sorry, we're not here to improve your code; especially not if you haven't even taken the effort to write it. We are here because we like to help people use GNU Radio, but it ends at the point where we do their work. In your case, that job is understanding how to use classes that take pointers to input buffers, and to learn the basic principles of operation of GNU Radio. For an near example, look at any any cc language documentation. This is totally out of scope of this mailing list, sorry. GNU Radio is not about learning to program C++. Every line you write will of course improve your programming skills. But using GNU Radio from C++ demands for a solid knowledge of the programming language beforehand. And you seem to lack that. Again, it is up to you, more people understand, more users will implement your code. It is a kind of marketing. Again, the code you're trying to use is not something that someone else who is not already using GNU Radio would want to use. It is just something you *can* use from *within* GNU Radio. Still, we assume that to any feasibly interested outsider with a little background in C++, the supplied doxygen is enough. Sorry. You seem to be offended, and I hope that's not the case. From my perspective, a lot of people tried to be really helpful and show you the things you need to learn until you can start to use the functionality you want to have. We have invested a lot of time in it, to help you for free with no personal benefit. I will stop (and I presume the others do, too) to discuss this issue, not because I don't want to make it easy for you, but because I really can't simplify it (honestly, fft::fft_complex is one of the most easy to understand classes), nor see any benefit in telling you again and again that you need to learn C++ before you use C++ classes, need to understand the concepts of a DFT before you use an FFT, and point you to different helpful resources that you simply smite because they can't break the stuff down for your understanding. Greetings, Marcus -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4pvwAAoJEAFxB7BbsDrLqaMIAKAEkEPPLrVGoWPO1RiOl5Z2 8BDUfyD9/fCK8/kGWBOUhU2vFXTJwsYW3r96vx26izLNE4YjH+xit6LSFYz98Zld zpYczT+WnjnE2WdRMsTgmvzgDI1+WGV5nr5OogkV6XXavGBMzRwCHiSJjmrHWub/ OCAXKfcqrovX/Mg3zOfnKgBsHu217AK1g08o8Zb6MCk+7iB9kfwetr6ohEeEmYYR quyqcv6ZxN/p5CBqYg7SABOxw+aRRqh8RxqBEyWKNQ7GfCcECr1snahR9w/1/mXF /zpqpSbqYdREMP7MNuT09umCiLHKCuKPNmeOeoqVcCusz27Yapr4QV7nqMvBEWI= =c3Eo -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] how to use FFT without grc block
Hi all, I know there is an FFT block in gnuradio 3.7. I want to create a cc file and add some gnuradio classes there. Can I use FFT without .grc file without using blocks, just as a c++ function? -- NE___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Yes, you can. Look into the gr-fft module documentation in the doxygen docs. Alternatively, you can simply link against FFTW [1] yourself and use the FFT algorithms; gr-fft is a wrapper for that functionality offering simplification and ease of use. But if an FFT is all that you're after, going directly for FFTW might be the best choice; if you need something non-standard such as 2D-FFT (or higher dimensions), real-only transforms, sliced/strided, hundreds of transforms at once... use FFTW. If you just want an N-Point FFT and are linking against GR anyway, use gr-fft. Greetings, Marcus [1] Fastest Fourier Transform in the West, http://www.fftw.org/ On 23.01.2014 20:17, Nasi wrote: Hi all, I know there is an FFT block in gnuradio 3.7. I want to create a cc file and add some gnuradio classes there. Can I use FFT without .grc file without using blocks, just as a c++ function? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4XQPAAoJEAFxB7BbsDrLyfEIAJLH45hnH5DpkMpU/bV4s3Pl 2IXkAzZYJ1+JzotL0s9I4FMoQiwWe3t1ICzcP7U1p/kcZbA4nXaZ+JnTdLrQLGTG 9+G7vWDsNYtsxmxzDScFPsxzathATbM5k0VDqXoDf1sPd1RMP0TyOZ0hl9E+tugK HWvZcLjwEUdNoW/ZdHA8DVohXS05qF9doeF5vQI33ftUq9iWEaXCAYM3r/Vudbi0 OcwyloLhdaKw47qiclLvlKUfI8va8YbknSB0WU2laiIK59qsl/87bd6K01jfAyWf QZgbYJ8SoRtr9to04iW4DUjaX59PESJhSZYnpf8ZEhXcKw8i+kM0c7lPC9mnCww= =vK/B -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Четверг, 23 января 2014, 20:57 +01:00 от Marcus Müller mar...@hostalia.de: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Yes, you can. Look into the gr-fft module documentation in the doxygen docs. Alternatively, you can simply link against FFTW [1] yourself and use the FFT algorithms; gr-fft is a wrapper for that functionality offering simplification and ease of use. But if an FFT is all that you're after, going directly for FFTW might be the best choice; if you need something non-standard such as 2D-FFT (or higher dimensions), real-only transforms, sliced/strided, hundreds of transforms at once... use FFTW. If you just want an N-Point FFT and are linking against GR anyway, use gr-fft. Greetings, Marcus [1] Fastest Fourier Transform in the West, http://www.fftw.org/ On 23.01.2014 20:17, Nasi wrote: Hi all, I know there is an FFT block in gnuradio 3.7. I want to create a cc file and add some gnuradio classes there. Can I use FFT without .grc file without using blocks, just as a c++ function? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4XQPAAoJEAFxB7BbsDrLyfEIAJLH45hnH5DpkMpU/bV4s3Pl 2IXkAzZYJ1+JzotL0s9I4FMoQiwWe3t1ICzcP7U1p/kcZbA4nXaZ+JnTdLrQLGTG 9+G7vWDsNYtsxmxzDScFPsxzathATbM5k0VDqXoDf1sPd1RMP0TyOZ0hl9E+tugK HWvZcLjwEUdNoW/ZdHA8DVohXS05qF9doeF5vQI33ftUq9iWEaXCAYM3r/Vudbi0 OcwyloLhdaKw47qiclLvlKUfI8va8YbknSB0WU2laiIK59qsl/87bd6K01jfAyWf QZgbYJ8SoRtr9to04iW4DUjaX59PESJhSZYnpf8ZEhXcKw8i+kM0c7lPC9mnCww= =vK/B -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
Check the FFTW documentation. On Fri, Jan 24, 2014 at 12:45 PM, Nasi nesaz...@mail.ru wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? this redundant information is hopeless... Do you know any normal good mature documentation? Четверг, 23 января 2014, 20:57 +01:00 от Marcus Müller mar...@hostalia.de: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Yes, you can. Look into the gr-fft module documentation in the doxygen docs. Alternatively, you can simply link against FFTW [1] yourself and use the FFT algorithms; gr-fft is a wrapper for that functionality offering simplification and ease of use. But if an FFT is all that you're after, going directly for FFTW might be the best choice; if you need something non-standard such as 2D-FFT (or higher dimensions), real-only transforms, sliced/strided, hundreds of transforms at once... use FFTW. If you just want an N-Point FFT and are linking against GR anyway, use gr-fft. Greetings, Marcus [1] Fastest Fourier Transform in the West, http://www.fftw.org/ On 23.01.2014 20:17, Nasi wrote: Hi all, I know there is an FFT block in gnuradio 3.7. I want to create a cc file and add some gnuradio classes there. Can I use FFT without .grc file without using blocks, just as a c++ function? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4XQPAAoJEAFxB7BbsDrLyfEIAJLH45hnH5DpkMpU/bV4s3Pl 2IXkAzZYJ1+JzotL0s9I4FMoQiwWe3t1ICzcP7U1p/kcZbA4nXaZ+JnTdLrQLGTG 9+G7vWDsNYtsxmxzDScFPsxzathATbM5k0VDqXoDf1sPd1RMP0TyOZ0hl9E+tugK HWvZcLjwEUdNoW/ZdHA8DVohXS05qF9doeF5vQI33ftUq9iWEaXCAYM3r/Vudbi0 OcwyloLhdaKw47qiclLvlKUfI8va8YbknSB0WU2laiIK59qsl/87bd6K01jfAyWf QZgbYJ8SoRtr9to04iW4DUjaX59PESJhSZYnpf8ZEhXcKw8i+kM0c7lPC9mnCww= =vK/B -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to use FFT without grc block
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Nasi, On 24.01.2014 02:45, Nasi wrote: Thanks! with doxygen docs do you mean these: http://gnuradio.org/doc/doxygen/classgr_1_1fft_1_1fft__complex.html ? Yes, basically that class. I was referring to the module as whole, and was hoping you'd might take a look into the GR source to find out how it works; really, no magic involved there :) look into gr-fft/lib/fft.cc this redundant information is hopeless... Do you know any normal good mature documentation? Well if you want to use gr-fft, you must me content with what you can find in the doxygen, find when searching the mailing list and the internet in general. This is open source, so when someone implemented something and felt that it is documented well enough, they'd stop writing documentation and continue on implementing cool stuff :) basically, the names of the methods fft_complex class seem to named self-explanatory enough to me... I *do* get the feeling you're not really after the minimalist fft wrapper classes that are available in gr-fft, but want some general FFT routines. As explained in great length in my last email, look for a general FFT library then, and FFTW is the library of choice and well-documented. Anyway, you should explain what you're trying to do and maybe we can help you :) Good morning! Marcus Четверг, 23 января 2014, 20:57 +01:00 от Marcus Müller mar...@hostalia.de: Yes, you can. Look into the gr-fft module documentation in the doxygen docs. Alternatively, you can simply link against FFTW [1] yourself and use the FFT algorithms; gr-fft is a wrapper for that functionality offering simplification and ease of use. But if an FFT is all that you're after, going directly for FFTW might be the best choice; if you need something non-standard such as 2D-FFT (or higher dimensions), real-only transforms, sliced/strided, hundreds of transforms at once... use FFTW. If you just want an N-Point FFT and are linking against GR anyway, use gr-fft. Greetings, Marcus [1] Fastest Fourier Transform in the West, http://www.fftw.org/ On 23.01.2014 20:17, Nasi wrote: Hi all, I know there is an FFT block in gnuradio 3.7. I want to create a cc file and add some gnuradio classes there. Can I use FFT without .grc file without using blocks, just as a c++ function? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS4ghsAAoJEAFxB7BbsDrL2DkH/ijaxBZWxt4gh790z6jc7o4I 63rgJa+J1N9uB78p7ZLuoPaFezmX69VOFLUaC0Az+Sg5hPdXwxE21qOzDNpc+XO2 tA6146LJRZXMjOcrPnkT+gVVxfhx2UklfYPPuxl+ttlAMnrgvh7kK6ZWX5Kzvli8 EhZWdRxl1k4fdxDkKPP8v6kN2pVydWvXpTLwln8FAjkSCsPKXnH7rxfNLJcQZ6vW WDinaN5chPLYP8hRgTetvB3V06BeDdMB96Kx3n5rmUloOWlCUvLFQ/rLhTUJ84iH 5rjhtTMT/I/3KsmIxYUCUEFhg088p6qNzdmMPEaWL9n+EKxp/t/JuzzYckhIeBQ= =5nqS -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
