strf | Radio Frequency Satellite Tracking | Navigation library

 by   cbassa C Version: Current License: GPL-3.0

kandi X-RAY | strf Summary

kandi X-RAY | strf Summary

strf is a C library typically used in User Interface, Navigation applications. strf has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

strf is the satellite tracking toolkit for radio observations (RF). The software is designed to allow tracking of satellites from radio observations, using Doppler curves to identify satellites and/or determine their orbits. The software is designed for linux operating systems, and will work with most software defined radios (SDRs), certainly those that are supported by The software comes with tools for data acquisition, performing FFTs to generate timestamped spectrograms (waterfall plots), and analysis, to extract and analyse Doppler curves.
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            kandi-support Support

              strf has a low active ecosystem.
              It has 114 star(s) with 28 fork(s). There are 18 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 22 have been closed. On average issues are closed in 66 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of strf is current.

            kandi-Quality Quality

              strf has 0 bugs and 0 code smells.

            kandi-Security Security

              strf has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              strf code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              strf is licensed under the GPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              strf releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.
              It has 478 lines of code, 26 functions and 9 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            strf Key Features

            No Key Features are available at this moment for strf.

            strf Examples and Code Snippets

            No Code Snippets are available at this moment for strf.

            Community Discussions

            QUESTION

            RISC-V inline assembly using memory not behaving correctly
            Asked 2022-Mar-12 at 16:57

            This system call code is not working at all. The compiler is optimizing things out and generally behaving strangely:

            ...

            ANSWER

            Answered 2022-Mar-12 at 16:57

            It's not loading a0 with the buffer at sp.

            Because you didn't ask for a pointer as an "r" input in a register. The one and only guaranteed/supported behaviour of T foo asm("a0") is to make an "r" constraint (including +r or =r) pick that register.

            But you used "m" to let it pick an addressing mode for that buffer, not necessarily 0(a0), so it probably picked an SP-relative mode. If you add asm comments inside the template like "ecall # 0 = %0 1 = %1 2 = %2" you can look at the compiler's asm output and see what it picked. (With clang, use -no-integrated-as so asm comments in the template come through in the -S output.)

            Wrapping a system call does need the pointer in a specific register, i.e. using "r" or +"r"

            Source https://stackoverflow.com/questions/71450687

            QUESTION

            Raw expression in Vue.js: error in computing class dynamically
            Asked 2021-Sep-11 at 02:12

            In vue.js 2.0 I'm trying to make a compute a class like this:

            ...

            ANSWER

            Answered 2021-Sep-11 at 02:12

            When you use v-bind, it expects a valid javascript expression, but 'str1' calcStarClass(1, p.rtg) is not a valid javascript expression. Use + to concatenate multiple classes if that's what you need:

            Source https://stackoverflow.com/questions/69139481

            QUESTION

            Discord py bot not triggering and ignoring commands
            Asked 2021-Jul-10 at 15:38

            I have this bot that checks everytime someone sends a message using an on_message event and for some reason the other commands that the bot has seem to be ignored. I figured that out after removing the function of checking the msgs and the commands work pretty fine.

            Here is the on_message event code:

            ...

            ANSWER

            Answered 2021-Jul-10 at 15:38

            You need to add await client.process_commands(message) to the end of your on_message coroutine.

            As the docs state:

            By default, this coroutine is called inside the on_message() event. If you choose to override the on_message() event, then you should invoke this coroutine as well.

            Source https://stackoverflow.com/questions/68329014

            QUESTION

            How to SELECT * FROM table WHERE month AND year in SQLite database by rawQuery(query, args)?
            Asked 2021-Jul-08 at 03:00

            I was trying to select all the columns in the table where the "month" and "year" are the same. The method rawQuery(query,args) receive an array of string[] with the a query that replaces the camps with "?".

            This was some of my attempts:

            ...

            ANSWER

            Answered 2021-Jul-02 at 15:34

            Your first attempt is dangerous. This will open your app for a SQL injection attack. For a local database that only has one user, this probably isn't a big deal. But you should get in the habit of using bound parameters as in the second query.

            The problem is that you can only use ? as a place holder for the entire value, so your query should be:

            Source https://stackoverflow.com/questions/68227821

            QUESTION

            Adding Total column in R dataframe
            Asked 2021-May-08 at 19:21

            I have following Dataframe in R.

            ...

            ANSWER

            Answered 2021-May-08 at 18:50

            You need some sort of string-parsing function that also handles the aggregation:

            Source https://stackoverflow.com/questions/67450026

            QUESTION

            PostgreSQL: Count Number of Occurrences in Columns
            Asked 2021-Mar-01 at 03:54
            BACKGROUND

            I have three large tables (employee_info, driver_info, school_info) that I have joined together on common attributes using a series of LEFT OUTER JOIN operations. After each join, the resulting number of records increased slightly, indicating that there are duplicate IDs in the data. To try and find all of the duplicates in the IDs, I dumped the ID columns into a temp table like so:

            Original Dump of ID Columns first_name last_name employee_id driver_id school_id Mickey Mouse 1234 abcd wxyz Donald Duck 2423 heca qwer Mary Poppins 1111 acbe aaaa Wiley Cayote 1234 strf aaaa Daffy Duck 1256 acbe pqrs Bugs Bunny 9999 strf yxwv Pink Panther 2222 zzzz zzaa Michael Archangel 0000 rstu aaaa

            In this overly simplified example, you will see that IDs 1234 (employee_id), strf (driver_id), and aaaa (school_id) are each duplicated at least once. I would like to add a count column for each of the ID columns, and populate them with the count for each ID used, like so:

            ID Columns with Counts first_name last_name employee_id employee_id_count driver_id driver_id_count school_id school_id_count Mickey Mouse 1234 2 abcd 1 wxyz 1 Donald Duck 2423 1 heca 1 qwer 1 Mary Poppins 1111 1 acbe 1 aaaa 3 Wiley Cayote 1234 2 strf 2 aaaa 3 Daffy Duck 1256 1 acbe 1 pqrs 1 Bugs Bunny 9999 1 strf 2 yxwv 1 Pink Panther 2222 1 zzzz 1 zzaa 1 Michael Archangel 0000 1 rstu 1 aaaa 3

            You can see that IDs 1234 and strf each have 2 in the count, and aaaa has 3. After generating this table, my goal is to pull out all records where any of the counts are greater than 1, like so:

            All Records with One or More Duplicate IDs first_name last_name employee_id employee_id_count driver_id driver_id_count school_id school_id_count Mickey Mouse 1234 2 abcd 1 wxyz 1 Mary Poppins 1111 1 acbe 1 aaaa 3 Wiley Cayote 1234 2 strf 2 aaaa 3 Bugs Bunny 9999 1 strf 2 yxwv 1 Michael Archangel 0000 1 rstu 1 aaaa 3 Real World Perspective

            In my real-world work, the JOIN'd table contains 100 columns, 15 different ID fields and over 30,000 records, and the final table came out to be 28 more than the original. This may seem like a small amount, but each of the 28 represent a broken link that we must fix.

            Is there a simple way to get the counts populated like in the second table above? I have been wrestling with this for hours already, and have not been able to make this work. I tried some aggregate functions, but they cannot be used in table UPDATE operations.

            ...

            ANSWER

            Answered 2021-Mar-01 at 03:54

            The COUNT function, when used as an analytic function, can do what you want here, e.g.

            Source https://stackoverflow.com/questions/66415757

            QUESTION

            How to handle multiple datetime-formats within a dataset?
            Asked 2020-Nov-16 at 22:19

            within a dataset, there are several different datetime-strings.

            For example:

            2020-11-16T06:00:00Z

            2020-11-16T06:00:00+01:00

            2020-11-16T06:00:00+01:00Z

            2020-11-16T06:00:00+02:00

            2020-11-16T06:00:00.000Z

            I thought about replacing everything after the seconds, but it gives me errors, when for example +01:00 isn't given in the first place.. or else.

            Do you have any clou, how to handle this?

            It would be absolutely enough, if I could get:

            %Y-%m-%dT%H:%M

            (The basics, how to strp and strf are known...)

            I've wrangled my head all night about this problem. Hope, that one of you have got a solution...

            thank you in advance!

            ...

            ANSWER

            Answered 2020-Nov-16 at 05:26

            Python has a standard library that deals with this problem:

            Source https://stackoverflow.com/questions/64852873

            QUESTION

            Parsing a date string reliably in jq
            Asked 2020-Jul-05 at 09:00

            Overall aim: Parse a string in GMT as a time using jq and output both a formatted time and the difference of that time to "now". However, jqs (version 1.6, Debian testing) timezone handling seems very confused to me:

            ...

            ANSWER

            Answered 2020-Jul-04 at 21:36

            This probably isn't the answer you're looking for but it might clear some things up. builtin.jq defines

            Source https://stackoverflow.com/questions/62733112

            QUESTION

            Break down a String in SWIFT
            Asked 2020-Apr-19 at 09:19

            How can I break down a string by spaces? I’m used to taking data before/after a word or special character or a space. However I’m working on a decoder app where my string would look like:

            This is a downloaded code that would be set to a string: “09627189762”

            ...

            ANSWER

            Answered 2020-Apr-19 at 09:19

            You can use a regular expression to split your input string into constant-length parts. In the example below, each (\\d{X}) part of the pattern means "match a sequence of X digits".

            Source https://stackoverflow.com/questions/61298313

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install strf

            For Ubuntu systems or similar. Install dependencies: sudo apt install git make gcc pgplot5 gfortran libpng-dev libx11-dev libgsl-dev libfftw3-dev dos2unix Clone repository: git clone https://github.com/cbassa/strf.git Compile: cd strf; make Install (in /usr/local): sudo make install

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            https://github.com/cbassa/strf.git

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            gh repo clone cbassa/strf

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            git@github.com:cbassa/strf.git

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