loud | Web accessibility testing helper | User Interface library
kandi X-RAY | loud Summary
kandi X-RAY | loud Summary
Loud is a JavaScript library for browser, which helps track regression of accessibility. Loud ships under terms of the MIT License.
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Trending Discussions on loud
QUESTION
I have this dataset:
...ANSWER
Answered 2021-May-27 at 15:51If you want to standardize or normalize the tracks within each group, you can use dplyr::group_by
. For a log-scale, you may want to normalize so that the values are between [0, 1]. Normalizing involves taking the difference between the value and its minimum (b/c decibels are negative) and dividing by the minimum. We also have to subtract from 1
to move the range from [-1, 0] to [0, 1].
QUESTION
I've been trying to make my website responsive for devices with a maximum width of 600px using CSS. Everything works fine except for my aside
element. When I put my website in a responsiveness simulator, I can scroll to the right (which is not supposed to happen).
Here is my code: https://codepen.io/xirokif/pen/OJpjNWO
...ANSWER
Answered 2021-May-26 at 21:21The negative margin on the aside
element causes the overall body width to exceed 100%. That is why a scroll bar is shown by browsers.
Remove the line margin-right: -15px;
in the declaration for the aside
element and the scrollbar should be gone.
QUESTION
In HDFS, you can create a file that has many partitions. This made me start thinking on a few questions for google cloud storage
- Can I do the same in Google Cloud Storage spreading out my file across many nodes?
- Can I create a file with say N empty partitions and have N nodes filling in each partition?
As our data flows through the system to the end, this allows us to map any size file a customer gives us to a single output file (even though the output file is spread over a cluster of nodes).
hmmm, thinking out loud, I am not sure how to do this in Hadoop except via map/reduce. Is there a way in hadoop HDFS to
- Create a file of N empty partitions
- Have my N nodes write to those partitions
thanks, Dean
...ANSWER
Answered 2021-Apr-16 at 12:49I think you are implicitly assuming things about GCS in your question, like it is implemented more-or-less like HDFS, or that it supports partial writes, like filesystems do. That is not the case, GCS is a blob (or object) storage system, not a filesystem. I will try to answer your direct questions the best I can, but this preamble hopefully helps:
Can I do the same in Google Cloud Storage spreading out my file across many nodes?
You cannot control how GCS allocates objects (or portions of an object) across nodes. Having said that, GCS automatically splits large objects across many "nodes", both for performance and redundancy reasons.
Can I create a file with say N empty partitions and have N nodes filling in each partition?
Objects are immutable in GCS. Once you create them, you cannot change them (you can create new versions). In short, no, you cannot do exactly what you are asking, but you can do things that have similar effect, for example:
- You can have N processes each creating their own object, and then
- Compose these objects into a larger object, this is a pure server-side operation, so it is very efficient.
Note that compose is limited to 32 objects at a time, but you can recursively build larger and larger objects with multiple compose operations.
QUESTION
I have a tibble songs
which is too big to share here. Also, it doesn't matter; the problem applies for any tibble that only has dbl
values.
The idea is that I have one row I selected before. It can be any one of them, without any previous knowledge. The first thing I did was to filter it out:
...ANSWER
Answered 2021-Apr-02 at 13:14Assuming that dist
is a tibble and choice
is a vector of values (whose length is equal to the number of columns in dist
), I would try something like this:
QUESTION
I'm trying to build a good mental model for lambdas with receivers in Kotlin, and how DSLs work. The simples ones are easy, but my mental model falls apart for the complex ones.
Part 1Say we have a function changeVolume
that looks like this:
ANSWER
Answered 2021-Apr-06 at 13:29The lambda is like any other function. You aren't looping through it. You call it and it runs through its logic sequentially from the first line to a return statement (although a bare return
keyword is not allowed). The last expression of the lambda is treated as a return statement. If you had not defined your parameter as receiver, but instead as a standard parameter like this:
QUESTION
I am trying to detect sudden loud noises in audio recordings. One way I have found to do this is by creating a spectrogram of the audio and adding the values of each column. By graphing the sum of the values in each column, one can see a spike every time there is a sudden loud noise. The problem is that, in my use case, I need to play a beep tone (with a frequency of 2350 Hz), while the audio is being recorded. The spectrogram of the beep looks like this:
As you can see, at the beginning and the end of this beep (which is a simple tone with a frequency of 2350 Hz), there are other frequencies present, which I have been unsuccessful in removing. These unwanted frequencies cause a spike when summing up the columns of the spectrogram, at the beginning and at the end of the beep. I want to avoid this because I don't want my beep to be detected as a sudden loud noise. See the spectrogram below for reference:
Here is what the graph of the sum of each column in the spectrogram:
Obviously, I want to avoid having false positives in my algorithm. So I need some way of getting rid of the spikes caused by the beginning and end of the beep. One idea that I have had so far is to add random noise with a low decibel value above and/or below the 2350 Hz line in the beep spectrogram above. This would ideally, create a tone that sounds very similar to the original, but instead of creating a spike when I add up all the values in the column, it would create more of a plateau. Is this idea a feasible solution to my problem? If so, how would I go about creating a beep sound that has random noise like I described above using python? Is there another, easier solution to my problem that I am overlooking?
Currently, I am using the following code to generate my beep sound:
...ANSWER
Answered 2021-Mar-31 at 17:31Not really an answer - more of a question.
You're asking the speaker to go from stationary to a sine wave instantaneously - that is quite hard to do (though the frequencies aren't that high). If it does manage it, then the received signal should be the convolution of the top hat and the sine wave (sort of like what you are seeing, but without having some data and knowing what you're doing for the spectrogram it's hard to tell).
In either case you could check this by smoothing the start and end of your tone. Something like this for your tone generation:
QUESTION
I have a dataframe of financial statements. The dataframe is in long format and I need to convert it to a wide dataframe to calculate new values. Some of the values, Gross Margin before Incentives
and Cash Incentives
, in the item
column are duplicated but they all belong to groups represented by the first word in the string above their respective Gross Margin before Incentives
values. This is an example of how my data looks like:
ANSWER
Answered 2021-Mar-25 at 02:16Here's one approach. You can:
- Get the first word of each item
- Use the list of
strings_to_clean
to decide whether the first word is a prefix or not - Use
fill
to add in the previous prefix for those rows with missing prefixes - Concatenate the new prefixes onto the original items.
I left the helper columns in and was verbose for clarity, but some of these steps could easily be condensed for concision.
QUESTION
Whilst, I have been unable to replicate this issue on my test devices / simulator, I'm getting a few crash reports from some users, but not all. EXC_BAD_ACCESS KERN_INVALID_ADDRESS at this line. Why is this and what steps can I take to resolve? The crash reports are from users on iOS 14.4.0 and 14.3.0 and from a variety of devices (iPhone 6s plus, iPhone 8 Plus, iPhone SE (2nd generation), iPhone XS, iPhone 7, iPhone 7s, iPhone 11, iPhone 12, iPhone X)
In PageViewController.m
...ANSWER
Answered 2021-Mar-19 at 08:09+(BOOL)areHeadphonesPluggedIn {
@try{
NSArray *availableOutputs = [[AVAudioSession sharedInstance] currentRoute].outputs;
for (AVAudioSessionPortDescription *portDescription in availableOutputs) {
if ([portDescription.portType isEqualToString:AVAudioSessionPortHeadphones]) {
return YES;
}
}
return NO;
}
@catch(id Exception){
return NO; // Not sure it will work as you exect
}
return NO; // move return here!
}
QUESTION
I am working on an example using A-Frame. The scene consists of a floating object (that bounces between two invisible boundaries). This is achieved using an animation mixin as below:
...ANSWER
Answered 2021-Mar-22 at 19:49You can use my animation-speed component (example) which allows you to provide a speed factor:
QUESTION
I would like to implement functionality for being able to search a QPlainTextEdit
for a query string, and display all matched lines in a table. Selecting a row in the table should move the cursor to the correct line in the document.
Below is a working example that finds all matches and displays them in a table. How can I get to the selected line number in the string that the plaintextedit holds? I could instead use the match.capturedEnd()
and match.capturedStart()
to show the matches, but line numbers are a more intuitive thing to think of, rather than the character index matches.
ANSWER
Answered 2021-Mar-13 at 15:14In order to move the cursor to a specified position, it's necessary to use the underlying QTextDocument using document()
.
Through findBlockByLineNumber
you can construct a QTextCursor and use setTextCursor()
to "apply" that cursor (including the actual caret position) to the plain text.
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