readtext | an R package for reading text files | Development Tools library
kandi X-RAY | readtext Summary
kandi X-RAY | readtext Summary
readtext is a one-function package that does exactly what it says on the tin: It reads files containing text, along with any associated document-level metadata, which we call “docvars”, for document variables. Plain text files do not have docvars, but other forms such as .csv, .tab, .xml, and .json files usually do. readtext accepts filemasks, so that you can specify a pattern to load multiple texts, and these texts can even be of multiple types. readtext is smart enough to process them correctly, returning a data.frame with a primary field “text” containing a character vector of the texts, and additional columns of the data.frame as found in the document variables from the source files. As encoding can also be a challenging issue for those reading in texts, we include functions for diagnosing encodings on a file-by-file basis, and allow you to specify vectorized input encodings to read in file types with individually set (and different) encodings. (All encoding functions are handled by the stringi package.).
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of readtext
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Community Discussions
Trending Discussions on readtext
QUESTION
I am trying to make a function that returns a T/Any object. The only thing is that i am not quite sure how to do it.
...ANSWER
Answered 2021-Jun-11 at 09:34If I understand your problem correctly, this is what you need:
QUESTION
- Hi there, I am new to C Programing and I am trying to make a Program to Read and Print text from standard input (file or keyboard) as part of my studies.
- The rules are:
- use two function one for read and one for print.
- read function should read into dynamic array or dynamic linked list of arrays.
- read function should ignore enter character ('\n').
- the user should be able to choose one of two data struct types option (array or linked list).
- print function should print the text in lines of 60characters.
- the first memory allocation should be at the main function.
- I have been trying to solve this out for few weeks but getting stuck, any step will be helpful.
- I am still having problems in both function readText and printText
- There are some code that have not written yet because I could not check print function without make read function work out.
- The First problem is that the read function failed to allocate new memory after 120 characters.
- My Code:
ANSWER
Answered 2021-Jun-08 at 13:05Congratulations on working with C, once you're over the learning curve, your experience in it will be invaluable!
Some hints:
- if you want to read into something dynamic, consider these options: provide a
**
parameter, or return a*
so that the caller can link to the memory returned byrealloc
- you're using
free
incorrectly,realloc
handles freeing any memory printf
has length format specifiers which work with strings, and the function returns the number of bytes written
QUESTION
I am currently trying to learn Kotlin with the help of the book "Kotlin Programming The Big Nerd Ranch Guide" and so far everything worked. But now I am struggling with the "lazy" initialization which throws a NullPointerException which says
Cannot invoke "kotlin.Lazy.getValue()" because "< local1>" is null
The corresponding lines are:
...ANSWER
Answered 2021-Jun-08 at 16:39When something like this happens, it's usually due to bad ordering of initialization.
The initialization of the Player
class goes this way:
- the
name
property has its backing field initialized with the_name
value - the
init
block is run, and tries to accessname
- the getter of
name
tries to read thehometown
property, but fails becausehometown
is still not initialized - ...if things had gone right, the
hometown
property would be initialized now with the lazy delegate
So basically you're trying to access hometown
before the lazy delegate is configured.
If you move hometown
's declaration above the init
block, you should be fine.
You can see the fix in action on the playground
QUESTION
I would like to create a loop in order to change the column names as shown:
...ANSWER
Answered 2021-Jun-03 at 14:24I would approach it like this:
QUESTION
This is the function in which I am getting an error .
...ANSWER
Answered 2021-May-30 at 06:26You should not use AsynTask now as it is deprecated, please do try coroutines.
But anyway, as you have not provided the full code of your doInBackground
, please try the below sample and see if that helps you.
QUESTION
I am not used to working with XML files but need to extract text from various fields in XML files. Specifically, I've downloaded and saved XML files like the following: https://www.federalregister.gov/documents/full_text/xml/2007/09/18/07-4595.xml. I'm interested in the text within the tag "regtext" in this and other similar XML files.
I've downloaded the XML files and stored them on my computer, but when I set the directory and attempt to use the readtext package to read from the XML files, I get the following error:
...ANSWER
Answered 2021-May-27 at 00:53From the error messages, the readtext function appears to be converting the xml file into a plain text document and the XML package is not accepting it as a valid document.
It is also likely that the XML parser is differentiating between "regtext" and "REGTEXT".
Here is a solution using the xml2 package. (I find this package provides a simpler interface and is easier to use)
QUESTION
In this app I used HttpURLConnection to download Feed RSS "From XML link" then parse it and view into listview, but after I run the app I got empty listview
the code
...ANSWER
Answered 2021-May-21 at 23:58These two lines are being executed, but not in the order you think. GlobalScope.launch()
starts asynchronous operation, it does not wait for it to finish, so return xmlResult.toString()
is probably executed before xmlResult.append()
.
I assume you tried to avoid blocking the main/UI thread. But note that your downloadURL()
is still designed in the way that it needs to wait for resources to be downloaded before it can successfully return. And because this method is invoked from the UI thread, you can't avoid blocking this thread.
To solve this, you need to move the whole resource loading procedure into an asynchronous operation. That means: downloadXML()
, downloadURL()
and even feeding the adapter with data. Just remove your current GlobalScope.launch()
, and inside onCreate()
do something along lines:
QUESTION
Im working on a simple OS, for the past 3 weeks ive been debugging an error that only arrises when i call c++ or c code in assembly, qemu (the emulator im using), will start flickering and wont load code. I have already tried this with other emulators.
"Bootloader.asm"
...ANSWER
Answered 2021-May-16 at 23:59like @jester commented your question. You seem to compile your bootloader as .code32. Your CPU(qemu or any other VM) won't boot it, cause CPU originally runs in 16bit mode. Please take a look here - JOS bootloader . This is minimalistic bootloader you might learn from.
QUESTION
I have a text file which contains the same string of characters in different lines. I read the file using this code:
...ANSWER
Answered 2021-May-17 at 19:40We need to know more about how the TreeView is built before we can answer this. It's possible there is simply not enough data associated with the TreeView right now, and the solution will be in a completely different area of the code.
However, I can provide some notes. First, reading a file is one of the slowest things possible to do in a computer. We already see this is small enough to fit in memory; if it's also reasonably stable (doesn't change often), you can save significant work by loading to the array once when the program starts.
Next, I wouldn't keep just a simple array of strings. Instead, I'd parse the data into separate fields right at load. A Tuple, Class, or even string array can all work.
Finally, this code will continue looping even after if finds a match. I'd have a way to stop once we find what we're looking for.
Put it all together like this:
QUESTION
I'm new in C#. I have a text file containing:
...ANSWER
Answered 2021-May-17 at 15:35So in essence you are only looking for the string "True"? you can simply do this:
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Vulnerabilities
No vulnerabilities reported
Install readtext
From CRAN install.packages("readtext")
From GitHub, if you want the latest development version. # devtools packaged required to install readtext from Github devtools::install_github("quanteda/readtext")
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