VNA | 1MHz to 6GHz USB based vector network analyzer

by jankae C Version: Current License: GPL-3.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | VNA Summary

VNA is a C library typically used in Internet of Things (IoT), Arduino applications. VNA has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

1MHz to 6GHz USB based vector network analyzer

Support

Quality

Security

License

Reuse

Support

VNA has a low active ecosystem.

It has 108 star(s) with 21 fork(s). There are 19 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 2 have been closed. On average issues are closed in 4 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of VNA is current.

Quality

VNA has 0 bugs and 0 code smells.

Security

VNA has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

VNA code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

VNA 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.

Reuse

VNA releases are not available. You will need to build from source code and install.

It has 72 lines of code, 1 functions and 3 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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VNA Key Features

No Key Features are available at this moment for VNA.

VNA Examples and Code Snippets

No Code Snippets are available at this moment for VNA.

Community Discussions

Trending Discussions on VNA

Arithmetic overflow depending on group by columns

Traversing through list> in C#

How to split a .rtf file into multiple files based on date line?

List of dataframes with different column names to a single pandas dataframe

Moving cell data to respective row based on numbers in another column

How to add random term in different steps of numerical integration

AppScript is not sending Emails automatically

Random number generators C++ and Python

Optimizing function parameters

MySQL Attendance IN & OUT columns with correct times

QUESTION

Arithmetic overflow depending on group by columns

Asked 2022-Jan-20 at 15:29

I'm getting this error but only when grouping by specific columns:

...

ANSWER

Answered 2022-Jan-20 at 14:59

The final value doesn't actually matter. What is likely happening, is that at some point in your SUM you are going over the maximum value (2,147,483,647) or minimum value (-2,147,483,648) for an int and getting the error.

Take this example:

Source https://stackoverflow.com/questions/70788344

QUESTION

Traversing through list> in C#

Asked 2021-Jul-10 at 12:49

I have a base class like:

...

ANSWER

Answered 2021-Jul-10 at 12:49

Since you only provided what the first item of SCLTN11 should look like, it is not easy to come up with a general pattern. However, based on the dimensions of vna.Data and the expected dimension of vm.SCLTN11, I guess I managed to understand what you want to achieve. If I'm not mistaken, you need the first item of SCLTN11 to consist of the S11R and S11I values of only FIRST items in A,B,...,I collections. For the second item, you want the S11R and S11I values of all the SECOND items in A,B,...,I collections. And so on. If this is what you want, you can't easily achieve it with foreach loops. However, you can easily use for loops with indexes to do it.

Source https://stackoverflow.com/questions/68322449

QUESTION

How to split a .rtf file into multiple files based on date line?

Asked 2021-Apr-06 at 17:55

I have a rich text document (.rtf) that has notes separated by dates. It follows the format below:

2021-4-6

Some notes

Hyperlink

More text

2021-4-5

Notes notes notes

I'd like to split the document so that there is a different file for each date with the corresponding notes saved and the date as the file name. The split command seemed close to what i wanted but it doesn't seem to be able to account for the variable amount of text and lines for each day. Would a bash script work for this? I'm new to this so forgive me if the answer is obvious. Edit: the document contains some leading spaces and blank lines.

An example input file:

2020-11-15

How to properly use a NanoVNA V2 Vector Network Analyzer (Tutorial) - YouTube - VNA NanoVNA

Impedence matching an antenna Reflection VNA vs Spectrum Analyzer? Usually impedence of 50 ohms VSWR Meter SWR - Standing Wave Ratio SWR = 1 means there is no reflected power

2020-11-11

Superheterodyne receiver - Wikipedia - A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. Protected Cell Unprotected Cell Logic Gates from Transistors: Transistors and Boolean Logic - YouTube -

Would be split into two files:

2020-11-15.rtf

2020-11-15

How to properly use a NanoVNA V2 Vector Network Analyzer (Tutorial) - YouTube - VNA NanoVNA

Impedence matching an antenna Reflection VNA vs Spectrum Analyzer? Usually impedence of 50 ohms VSWR Meter SWR - Standing Wave Ratio SWR = 1 means there is no reflected power

2020-11-11.rtf

2020-11-11

Superheterodyne receiver - Wikipedia - A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. Protected Cell Unprotected Cell Logic Gates from Transistors: Transistors and Boolean Logic - YouTube -

...

ANSWER

Answered 2021-Apr-06 at 17:55

awk to the rescue!

Source https://stackoverflow.com/questions/66972515

QUESTION

List of dataframes with different column names to a single pandas dataframe

Asked 2021-Apr-02 at 06:13

I have list of 3 dataframes of stock tickers and prices I want to convert into a single dataframe.

dataframes:

...

ANSWER

Answered 2021-Apr-01 at 09:58

I fixed it myself, here is what I did:

Source https://stackoverflow.com/questions/66901589

QUESTION

Moving cell data to respective row based on numbers in another column

Asked 2021-Mar-10 at 22:52

I have a list of parts that have a part code. I need to align columns B-E to match the list of numbers in column A, leaving blanks where the data has moved down. The number in column B should match the number in column A.

A simple sort will not do because ColumnB,D,E has fewer entries than ColumnA and some numbers in ColumnB are not in ColumnA.

A B C D E '005023 5025 oil-filler-level-plug-genuine-005025 GENUINE PIAGGIO, OIL FILLER PLUG. 1.5 '005024 5027 rear-hub-cone-shim-lambretta-005027 LAMBRETTA REAR HUB CONE SHIM. 1.25 '005025 5031 piston-s2-s3-524mm-125cc-gol-005031 ITALIAN MADE BY GOL 46.5 '005027 5032 exhaust-simonini-px-125-black-005032 135 '005029 5036 floor-runner-kit-vespa-px-125-200-005036 GOOD QUALITY, ITALIAN MADE, COMLETE FLOOR RUNNER KIT 25 '005031 5037 rear-light-grey-top-for-vespa-rally-005037 5 '005032 5038 front-hub-back-plate-chrome-005038 Suitable for all Lambretta S1 S2 S3 models 45 '005033 5041 clutch-plates-surflex-cosa-vespa-px-005041 TOP QUALITY ITALIAN COSA CLUTCH PLATES MADE BY SURFLEX. 16 '005036 5044 points-ducati-style-lambretta-005044 TOP QUALITY,CONTACT BREAKER POINT FOR LAMBRETTA 10 '005037 5045 condensor-ducati-dansi-li-sx-tv-gp-005045 DUCATI TYPE CONDENSOR FOR MOST LAMBRETTAS. 9 '005038 5047 panel-handle-lock-mechanisms-s1-s2-005047 TOP QUALITY, LAMBRETTA SERIES 1 & 2 SIDE PANEL HANDLE MECHANISM KIT. 41 '005040 5049 fork-push-rods-pistons-s1-2-3-005049 TOP QUALITY LAMBRETTA FORK PUSH ROD PISTON SET. 12 '005041 5050 fuel-tank-vespa-gs-160-180ss-rally-005050 100 '005044 5051 wheel-rim-chrome-10-inch-vespa-005051 TOP QUALITY, CHROMED WHEEL RIMS ( 1 X WHEEL ) 38 '005045 5052 carb-box-top-carbon-look-pe-px-efl-005052 VBB SPRINT GT PX 22 '005047 5054 input-shaft-needle-rollers-px-21-005054 ITALIAN MADE SET OF 23 INPUT SHAFT NEEDLE ROLLER BEARINGS 5 '005049 5055 air-hose-clips-19mm-series-2-carb-005055 LAMBRETTA SERIES1 AND 2 AIR HOSE CLIPS FOR STANDARD 5 '005050 5056 air-hose-vespa-vna-005056 6.5 ...

ANSWER

Answered 2021-Mar-10 at 22:52

Add a reference from the VBA editor (Tools -> References...) to Microsoft ActiveX Data Objects; choose the latest version, usually 6.1

Then you could write VBA code like the following:

Source https://stackoverflow.com/questions/66530748

QUESTION

How to add random term in different steps of numerical integration

Asked 2021-Jan-16 at 22:49

For the function below, I would not add the noise (Inoise in the code below) in every time step but, for example, only in every second time step. So while dt=0.0025 serves as the time step for the numerical integration, I would, for example, add Inoise only in every second time step (i.e. in 0.005 steps).

What is the best way to insert this into my existing function?

...

ANSWER

Answered 2021-Jan-16 at 22:49

You could accumulate the elapsed time and only add the noise once enough steps have passed:

Source https://stackoverflow.com/questions/65752467

QUESTION

AppScript is not sending Emails automatically

Asked 2020-Dec-20 at 09:01

Using below AppScript to sending an auto email based on Google Sheet values but its not working.

I have changed the Column reference according to the current columns but its not giving an error but also not sending the email.

can someone please look into this matter.

Your help will be greatly appreciated.

...

ANSWER

Answered 2020-Dec-20 at 08:15

In your Spreadsheet, it seems that Your issue is the column "E". But columnSEND is 15 by var columnSEND = 15 of your script in your question. In this case, the if statement of if((dice[i][columnSEND-1]==textCONDITION) && (dice[i][STATUScolumn-1]!=textSENT)){ checks the column "O". I think that this is the reason of your issue.

So in order to check the column "E", as a simple modification, how about the following modification?

From:

Source https://stackoverflow.com/questions/65377975

QUESTION

Random number generators C++ and Python

Asked 2020-Dec-18 at 21:18

I have programmed a model in both C++ and Python. This model has a noisy-input component, which I can replace with this C++:

...

ANSWER

Answered 2020-Dec-18 at 21:18

You've messed up indents in the Python code. These lines

Source https://stackoverflow.com/questions/65310535

QUESTION

Optimizing function parameters

Asked 2020-Nov-29 at 12:30

I explain briefly what the attached program code should do. We give a number of passes before runs = 100. and we give I = 10.

For example we set the area_factor = 1. Then the function HH_model(I,area_factor) does the following: run 100 times with this I and this area_factor and return the number of times the barrier 60 is broken -- this is checked in the if max(v[:]-v_Rest) > 60 query.

Now I want to do the following: Determine that area_factor so that the number of count matches observations as well as possible. For example, I know from measurements

...

ANSWER

Answered 2020-Nov-29 at 12:30

The result of your line 126 is a three dimensional array with three times the same value. This size-3 array does not fit into an element of v, which has size-1 elements as you initialized them this way.

Therefore, you could add a [0]: v[i + 1] = (vT + ((-IIon + IStim) / C) * dt)[0]

Furthermore, I think you do not need to allocate memory. You could for example use numpy.append in line 126.

Source https://stackoverflow.com/questions/65059872

QUESTION

MySQL Attendance IN & OUT columns with correct times

Asked 2020-Jul-09 at 18:12

I have a database for attendance, it works fine as long as the person does not work over 2 dates. I want to utilize IN and OUT system for records but I do not know how to do the final step, and what I saw on the forum does not work on MySQL or I am doing something wrong there. This is my database and queries are under. BTW Database is built using PHPmyadmin and MySQL Workbench.

...

ANSWER

Answered 2020-Jul-08 at 08:45

Assuming that:

1st record for each separate emp_id is IN event
There is no lost events

Source https://stackoverflow.com/questions/62789903

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

Vulnerabilities

No vulnerabilities reported

Install VNA

You can download it from GitHub.

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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