harold | An open-source systems and controls toolbox for Python3

 by   ilayn Python Version: v1.0.1 License: MIT

kandi X-RAY | harold Summary

kandi X-RAY | harold Summary

harold is a Python library typically used in Simulation applications. harold has no vulnerabilities, it has a Permissive License and it has low support. However harold has 17 bugs and it build file is not available. You can install using 'pip install harold' or download it from GitHub, PyPI.

An open-source systems and controls toolbox for Python3
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              harold has a low active ecosystem.
              It has 145 star(s) with 19 fork(s). There are 10 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 5 open issues and 28 have been closed. On average issues are closed in 179 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of harold is v1.0.1

            kandi-Quality Quality

              OutlinedDot
              harold has 17 bugs (1 blocker, 0 critical, 16 major, 0 minor) and 360 code smells.

            kandi-Security Security

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

            kandi-License License

              harold is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              harold releases are available to install and integrate.
              Deployable package is available in PyPI.
              harold has no build file. You will be need to create the build yourself to build the component from source.
              harold saves you 2596 person hours of effort in developing the same functionality from scratch.
              It has 5637 lines of code, 242 functions and 33 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed harold and discovered the below as its top functions. This is intended to give you an instant insight into harold implemented functionality, and help decide if they suit your requirements.
            • The DC gain
            • Convert to numpy array
            • Return the DC gain
            • Calculate cancellation distance
            • Computes the minimization state of a matrix
            • Generate eigenvalue matrix
            • Return the properties of the pole
            • Compute the properties of the pole
            • Write the version py file
            • Return the git version number
            • Get the full version information
            • Set the transfer function
            • R Convert a tensor to a given state
            • Recalculate pole and zeros
            • Sets whether the pole is stable
            • Set transfer function
            • Return the full version information
            • Set the C
            • Recalculate the poles
            • Check if poles are stable
            • Setter
            • Set the D
            • Set the b
            Get all kandi verified functions for this library.

            harold Key Features

            No Key Features are available at this moment for harold.

            harold Examples and Code Snippets

            No Code Snippets are available at this moment for harold.

            Community Discussions

            QUESTION

            Assignment in a map function?
            Asked 2021-Jun-15 at 07:58

            I have something like this:

            ...

            ANSWER

            Answered 2021-Jun-14 at 19:30

            You could spread the object and add another name for all object.

            This method does not mutate the given data.

            Source https://stackoverflow.com/questions/67976030

            QUESTION

            Python selenium get contents of a webpage added by javascript
            Asked 2021-Jun-07 at 07:39

            I use an online music player called "Netease Cloud Music", and I have multiple playlists in my account, they hold thousands of tracks and are very poorly organized and categorized and held duplicate entries, so I want to export them into an SQL table to organize them.

            I have found a way to view the playlists without using the client software, that is, clicking the share button on top of the playlist page and then click "copy link".

            But opening the link in any browser other than the client, the playlist will be limited to 1000 tracks.

            But I have found a way to overcome it, I installed Tampermonkey and then installed this script.

            Now I can view full playlists in a browser.

            This is a sample playlist.

            The playlists look like this:

            The first column holds the songtitle, the second column holds the duration, the third column holds the artist, and the last column holds the album.

            The text in the first, third and fourth columns are hyperlinks to the song, artist and album pages respectively.

            I don't know a thing about html but I managed to get its data structure.

            The thing we need is the table located at xpath //table/tbody, each row is a childnode of the table named tr(xpath //table/tbody/tr).

            this is a sample row:

            ...

            ANSWER

            Answered 2021-Jun-07 at 07:39

            The simplest answer is that you have to add some delay after opening the page with Firefox.get('https://music.163.com/#/playlist?id=158624364&userid=126762751') before getting the elements with Firefox.find_elements_by_xpath('//table/tbody/tr') to let the elements on the page loaded. It takes few moments.
            So, you can simply add a kind of time.sleep(5) there.
            The better approach is to use expected conditions instead.
            Something like this:

            Source https://stackoverflow.com/questions/67866536

            QUESTION

            Is the book answer-sheet wrong about this multiple recursion with car/cdr in Common Lisp?
            Asked 2021-May-30 at 18:51

            I am trying to learn Common Lisp with the book Common Lisp: A gentle introduction to Symbolic Computation. In addition, I am using SBCL, Emacs, and Slime.

            In the middle of chapter 8, the author presents recursion on trees. He showcases this concept with a function on trees that inserts the symbol 'q in all non-list elements of the tree:

            I did the same in my environment:

            ...

            ANSWER

            Answered 2021-May-30 at 18:51

            Unfortunately, while coping and yaking I forgot to change the recursive calls on atoms-to-q-no-null. I realized this error while preparing this question for stackoverflow.

            Since I had already written some part of the question, I thought it would be better to answer it and make the effort useful for other people.

            After fixing the recursive calls of the function:

            Source https://stackoverflow.com/questions/67764733

            QUESTION

            Convert double[,] to IntPtr C#
            Asked 2021-Mar-11 at 18:25

            I need to convert a double array in c# to an IntPtr to properly send it to my c DLL. I have successfully been able to convert from IntPtr to double[,] using the method from this answer. Ive also found another answer that is close to what I need but deals with 1D arrays.

            Im missing something in my logic and get the error code after a crash: Managed ' has exited with code -1073740940 (0xc0000374).

            This is what I have so far

            ...

            ANSWER

            Answered 2021-Mar-11 at 15:52

            There are various things wrong with that.

            First, rows * columns is not the size of the data, it's only the total number of elements. The elements are not one byte each, but eight, or sizeof(double) if you prefer.

            Second, p is updated by p = (IntPtr)(p.ToInt64() + IntPtr.Size); (ie advancing it by 4 or 8 bytes depending on how big pointers are in the current mode), but you've written columns * 8 (or, columns * sizeof(double)) bytes of data. Advancing p by less than columns * 8 makes the writes overwrite each other, so not all data ends up in the result. By the way, the complicated conversions here are actually not necessary, you can add directly to an IntPtr, since .NET 4.

            Third, p is changed in the loop, which is not bad on its own, but it's done in a way that loses track of the original pointer. toReturn.cells = p; and Marshal.FreeHGlobal(p); use a p which does not refer to the area that you allocated, they use a p which now points just past the end of the data (well it would point there if p was updated by the right amount). The original p must be remembered.

            Fourth, freeing the data before returning means that it now no longer exists, so whatever code this data is passed to, still doesn't have it: it has a pointer to nothing which will be invalid to use (it may accidentally work, but it's dangerous and wrong).

            The first three points are easy to fix, but the last one needs a non-local change to how your application works: the memory cannot be freed here, but it should be freed at some point, namely when the user of the data is done with it.

            Some fixes applied:

            Source https://stackoverflow.com/questions/66585636

            QUESTION

            Group by based on field length
            Asked 2021-Mar-10 at 09:34

            I wanted to group number of ids that are of length of 4, 5, 6 bytes based on the year.

            ID year name location geo new_loc addr 1 addr 2 addr 3 addr 4 12345 2019 bob UK UK-4 basic dat1 dat11 dat13 dat123 19804 2004 sam US US-1 advanced dat2 dat21 dat23 dat233 19 2000 lister EU EU basic dat3 dat31 dat33 dat333 190838 2004 harold US US-3 basic dat4 dat41 dat53 dat533 11804 2019 beanie SK UK-2 advanced NULL NULL NULL NULL

            Output

            ID year name location new location num_of_ids_each_year 12345 2019 bob UK basic 2 11804 2019 beanie SK advanced 2 19804 2004 sam US advanced 2 190838 2004 harold US basic 2

            What I tried:

            ...

            ANSWER

            Answered 2021-Mar-10 at 08:42

            You can use COUNT() with Partition by Year to get the results without using GROUP BY.

            Source https://stackoverflow.com/questions/66559340

            QUESTION

            How do I get Python to only allow a specific answer
            Asked 2021-Feb-01 at 14:09

            Hello I need help with this program I have been doing, this is a program which will ask the user trivia questions and then count the users IQ, I managed to make the program ask the user the questions and then add a 1 to the list that is named 'IQ' when the user answers the question correctly, I then had the computer count how many ones there are in the list to check the score that the user got.

            I then the next day tried to make it so that the program would make you input the answer again if you didn't input one of the specified answers and output a message asking to input your answer again.

            I am fairly new to programming so any help or criticism would be appreciated.

            ...

            ANSWER

            Answered 2021-Feb-01 at 14:09

            You can Do something like this -

            Source https://stackoverflow.com/questions/65938828

            QUESTION

            How to split data groups into quartiles by group's size
            Asked 2020-Dec-20 at 03:28

            I have a dataset for credit card transaction.

            I split this dataset by group using below code

            ...

            ANSWER

            Answered 2020-Dec-20 at 03:28

            QUESTION

            Dynamically allocate and initialize new object with 30% probability
            Asked 2020-Nov-25 at 01:01

            I'm writing a program that will simulate a randomized race between runners who are climbing up a mountain where dwarf orcs (dorcs) are coming down the mountain to attack the runners. It begins with two runners named harold and timmy at the bottom of the mountain. The runners make their way up the mountain in randomized moves where they may make progress forward up the mountain, or they may slide back down the mountain. Dorcs are randomly generated, and they inflict damage on a runner if they collide. The simulation ends when one of the runners reaches the top of the mountain, or when both runners are dead.

            I'm struggling with a part where I have to implement the actual race loop. Once the race is initialized, the race loop will iterate until the race is over. This happens when either a winner has been declared, or when all runners are dead.

            Every iteration of the race loop will do the following:

            with 30% probability, dynamically allocate a new dorc as an EntityType structure, and initialize it as follows:

            (a) a dorc’s avatar is always “d”

            (b) each dorc begins the race at the top of the mountain, which is at row 2

            (c) with equal probability, the dorc may be placed either in the same column as timmy, or in the same column as the harold, or in the column exactly half-way between the two

            (d) add the new dorc to the race’s array of dorcs

            (e) using the pthread_create() function, create a thread for the new dorc, and save the thread pointer in the dorc’s entity structure; the function that each dorc thread will execute is the void* goDorc(void*) function that you will implement in a later step; the parameter to the goDorc() function will be the EntityType pointer that corresponds to that dorc

            I guess I'm confused with the logic of how to approach this. I decided to make a function called isOver() to indicate if the race is over, and then a separate function called addDorc() to initialize the Dorc elements and do all the requirements above.

            In isOver(), I attempt to add a dorc object to the dorcs array by doing addDorc(race); with every iteration of the race loop/if the race hasn't ended or no one died. But I keep getting the error:

            ...

            ANSWER

            Answered 2020-Nov-25 at 01:01

            Caveat: Because there's so much missing [unwritten] code, this isn't a complete solution.

            But, I notice at least two bugs: the isOver bugs in my top comments. And, incrementing race->numRunners in addDorc.

            isOver also has the return 0; misplaced [inside the loop]. That should go as the last statement in the function. If you had compiled with -Wall [which you should always do], that should have been flagged by the compiler (e.g. control reaches end of non-void function)

            From that, only one "dorc" would get created (for the first eligible runner). That may be what you want, but [AFAICT] you want to try to create more dorcs (one more for each valid runner).

            Also, the bug the compiler flagged is because you're calling addDorc(race); but addDorc takes more arguments.

            It's very difficult to follow the code when you're doing (e.g.) race->dorcs[race->numDorcs]->whatever everywhere.

            Better to do (e.g.):

            Source https://stackoverflow.com/questions/64995885

            QUESTION

            I'm trying to edit a CANVAS page but I think I've done something wrong with the inline-block so my image and text doesn't sit side by side
            Asked 2020-Nov-11 at 09:19

            Normally I would use a CSS page, but i don't think i can do that with canvas :(

            ...

            ANSWER

            Answered 2020-Nov-11 at 09:19

            This is an example using flexbox. Wrap your divas in a container and give it a display: flex.

            Source https://stackoverflow.com/questions/64781837

            QUESTION

            Returning min/max value on a sublist without using built-ins?
            Asked 2020-Oct-27 at 18:03

            I'm relatively new to python, and am a bit confused with finding an int max/min value with a sublist. Example below

            Firstly, the data set im using is a list with lists as elements. It looks like - [[John, Smith, 15], [Yu, Harold, 16]] etc.. Im having trouble getting just the INT as the max or min value from the list. I have tried the following

            ...

            ANSWER

            Answered 2020-Oct-27 at 17:34

            Since you want the entire sub list with the max value, use a key function with max:

            Source https://stackoverflow.com/questions/64559826

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

            Vulnerabilities

            No vulnerabilities reported

            Install harold

            You can install using 'pip install harold' or download it from GitHub, PyPI.
            You can use harold like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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