csv2 | Fast CSV parser and writer for Modern C++ | CSV Processing library

by p-ranav C++ Version: v0.1 License: MIT

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kandi X-RAY | csv2 Summary

csv2 is a C++ library typically used in Utilities, CSV Processing applications. csv2 has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Fast CSV parser and writer for Modern C++

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Support

csv2 has a low active ecosystem.

It has 426 star(s) with 81 fork(s). There are 16 watchers for this library.

It had no major release in the last 12 months.

There are 14 open issues and 11 have been closed. On average issues are closed in 25 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of csv2 is v0.1

Quality

csv2 has no bugs reported.

Security

csv2 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

csv2 is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

csv2 releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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csv2 Key Features

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csv2 Examples and Code Snippets

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Community Discussions

Trending Discussions on csv2

Sort by numbers in R before printing as barchart with ggplot2

R sort column that contains "Width x Height"

geom_text in barplot to show frequency over bars using R

Print all years in a dataframe using R

One dodged barchart per year

Dodged bar plot in R based on to columns with count Year with ggplot2

pot histograms and had error "missing value where TRUE/FALSE needed"

Split domain and path using R regex

extract a column from multiple excel files and concatenate them into a single file with R

Loading .csv file with UTF-8 encoding error "no lines available in input" - byte order mark (BOM) "ï.."

QUESTION

Sort by numbers in R before printing as barchart with ggplot2

Asked 2021-Jun-11 at 07:22

I have this chart:

I want to to order it from low to high WidthGroup like this:

My input is ID, Width and Height of picutres. I first loop trough all rows and add them into correct group. Then I plot it as a barchart. My problem is that I want to change the order of the barchart so it's from low to high.

This is my code:

...

ANSWER

Answered 2021-Jun-11 at 07:22

Try creating a column with one dimension:

Source https://stackoverflow.com/questions/67932370

QUESTION

R sort column that contains "Width x Height"

Asked 2021-Jun-10 at 08:50

I have a data table that contains Width and Height. I want to print the frequency of each Width and Height in a bar chart. I managed to do this, but I want the barchart to be sorted on Width x Height starting on low to hight dimensions.

This is what I have:

The correct sorting will be something like this:

My code:

...

ANSWER

Answered 2021-Jun-10 at 08:28

a <- subset(data.frame(table(df[-1])), Freq >0)

with(a[seq(nrow(a), 1), ],
       barplot(Freq, horiz = TRUE, names.arg = paste(Width, Height, sep = 'x')))

Source https://stackoverflow.com/questions/67917102

QUESTION

geom_text in barplot to show frequency over bars using R

Asked 2021-Jun-09 at 14:10

I have this graph that I want to show the count over the bar, however my code shows the number 1 inside the bars..

What I have:

What I am trying to make:

...

ANSWER

Answered 2021-Jun-09 at 14:08

Since you have already calculated the frequency use geom_col.

Source https://stackoverflow.com/questions/67905778

QUESTION

Print all years in a dataframe using R

Asked 2021-Jun-09 at 10:12

I have a data frame with two dates:

Created Date
Last Accessed

I want to print all the years that exists in my data inside a loop:

1989
2017
2018
2019
2020
2021

I have tried to create a code that does this but it give me a error:

Error in df_years[x, 1:1] : incorrect number of dimensions

...

ANSWER

Answered 2021-Jun-08 at 12:48

Without a loop, after you extracted the years

Source https://stackoverflow.com/questions/67887117

QUESTION

One dodged barchart per year

Asked 2021-Jun-08 at 08:03

I have a dodged bar chart that shows the data "Created Date" and "Last Accessed" per year. The date data is formatted as year-month-date hour:minute:second.

Now I want to split the data up into one graph per year that shows Created date and Last accessed per date of the year. I tried to plot everything in one graph, however it was really messy..

Is it possible to plot per year, so in this example it will be 6 graphs because it is 6 years. I was thinking something like looping trough each year?

...

ANSWER

Answered 2021-Jun-08 at 07:49

perhaps this one? I switched to points and lines for better visualization.

Source https://stackoverflow.com/questions/67882684

QUESTION

Dodged bar plot in R based on to columns with count Year with ggplot2

Asked 2021-Jun-07 at 14:13

I am trying to create a dodged bar plot with RStudio using ggplot2.

I want to create number of years with "Created.Date" and "Last.Acccessed". Something like this:

My data frame has the following headlines:

File.Name
Created.Date
Last.Accessed
Visual.Group

First I need to remove duplicates (visual groups) and I have managed to do this. Now I need to count number of created date per year and number of last accessed per year.

I've managed to extract Year from the data.

...

ANSWER

Answered 2021-Jun-07 at 13:55

This is how I would do it:

Source https://stackoverflow.com/questions/67872482

QUESTION

pot histograms and had error "missing value where TRUE/FALSE needed"

Asked 2021-Jun-03 at 13:22

update:

Turned out it's caused by different classes of variables.

Many thanks to @r2evans, who solved this issue by converting interger64 to numeric when reading the data. His method is effective, but what's worth studying further is his problem-solving logic.

I deleted the data for confidentiality reasons.

Below is the previous question

I plotted histograms of all numeric clomuns in my data table.

...

ANSWER

Answered 2021-Jun-03 at 13:22

The ~~problem~~ symptom is that two of your fields ~~are~~ appear invariant. After downloading the full data dt:

Source https://stackoverflow.com/questions/67810309

QUESTION

Split domain and path using R regex

Asked 2021-May-30 at 10:15

I have a dataset with URLs that I want to split using a regex. I have created a regex that I belive works, however I am unsure how to implement it in R.

This is my regex:

...

ANSWER

Answered 2021-May-30 at 10:14

You can use the following regex -

Source https://stackoverflow.com/questions/67759811

QUESTION

extract a column from multiple excel files and concatenate them into a single file with R

Asked 2021-May-28 at 12:56

I have about 100 excel files (with one sheet), of which I want to extract the 4th column and put them all together in one file in R (and in this new file I would like to stack all the columns into a single column of data with their headers in the second column)

How could I do that in R? Thanks in advance!

I found this solution here : (Extracting specific column of different files and put them together in one big file in R)

...

ANSWER

Answered 2021-May-28 at 12:48

library(tidyverse)

filenames <- list.files(pattern = '\\.xlsx', full.names = TRUE)

map_df(filenames, ~readxl::read_excel(.x) %>% 
          select(4) %>%
          mutate(col = names(.)[1]) %>%
          rename(value = 1)) -> result

writexl::write_xlsx(result, 'new_data.xlsx')

Source https://stackoverflow.com/questions/67738897

QUESTION

Loading .csv file with UTF-8 encoding error "no lines available in input" - byte order mark (BOM) "ï.."

Asked 2021-May-19 at 15:55

I am loading a CSV file using read.csv2() function. The file has non-ASCII characters like "é". When loading it in Excel, they display correctly with UTF-8 encoding so I am guessing I need to use the same encoding when loading this file with read.csv2().

But everything went wrong...

...

ANSWER

Answered 2021-May-19 at 15:55

You get the usual BOM problem. BOM is usually used to indicate the byte order on generic UTF-16 and UTF-32 (where byte order is relevant).

Obviously Microsoft think that changing interpretation of existing standard is the way to go (who care about interoperability to non-Microsoft systems?), so they use BOM as indication that the file is UTF-8, to distinguish from other legacy encodings used by DOS and Windows. (Note: Linux and Apple changed default encoding to UTF-8 without need to break stuffs, or adding BOM, and in a much quicker way).

So, UTF-8 files created by Microsoft usually have BOM (0xEF 0xBB 0xBF), which is shown as ï»¿ on cp1252 (the Microsoft extension to Latin-1).

But most of tools (not made by Microsoft) misinterpret BOM, sometime following the standard, so interpreting it as hidden white space (the original meaning of the codepoint converted in most modern Unicode standard as BOM), or just seeing it as binary data, so just ignoring data.

For this reason, now we have the encoding utf-8-bom, which just skip the initial BOM (or create the BOM at writing). This usually fix the issue.

Source https://stackoverflow.com/questions/67605919

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