metadata

问题 I've got a bunch of audio files (let's say ogg or mp3), with metadata. I wish to read their metadata into R so to create a data.frame with: file name file location file artist file album etc Any way you know of for doing that ? 回答1: You take an existing mp3 or ogg client, look at what library it uses and then write a binding for said library to R, using the existing client as guide for that side -- and something like Rcpp as a guide on the other side to show you how to connect C/C++ libraries

问题 How can I get the apple-touch-icon or logo of the website using WKWebView or UIWebView? I've read that getting a favicon is possible, however I plan on using the website's logo as a short cut like in iOS Safari and a favicon is too small for it. Is there a way to scrape metadata from a website in webView to get <link rel="apple-touch-icon" href="apple-touch-icon.png"> ? 回答1: In Firefox for iOS we use a User Script (Link to code on Github) to find the icon that then passes them back to the

问题 Performing an ETL-task in pure Python, I would like to collect error metrics as well as metadata for each of the raw input files considered (error metrics are computed from error codes provided in the data section of the files while metadata is stored in headers). Here's pseudo-code for the whole procedure: import pandas as pd import dask from dask import delayed from dask import dataframe as dd META_DATA = {} # shared resource ERRORS = {} # shared resource def read_file(file_name): global

问题 What query should I implement to get columns that are inherited? Having read this comprehensive post didn't find the solution. 回答1: If I understand correctly, you want to know the names of the columns that are part of an inheritance between tables. SELECT nmsp_parent.nspname AS parent_schema, parent.relname AS parent_table, nmsp_child.nspname AS child_schema, child.relname AS child_table, column_parent.attname AS column_parent_name FROM pg_inherits JOIN pg_class parent ON pg_inherits

问题 How do you read the animated GIF's control block between each frame? I'm interested in the delay between each frame. I've looked at the Javadoc for ImageReader and I'm not seeing anything. Here's my code for reading all the frames from the animated GIF, how would I enhance it to read the metadata about each frame embedded in the animated GIF? List<BufferedImage> list = new ArrayList<BufferedImage>(); try { ImageReader reader = ImageIO.getImageReadersBySuffix("gif").next(); reader.setInput

问题 I'm creating composite images using Rmagick and want to include some specific info (author etc.) in the image file metadata, but can't find an obvious way to do this in the Rmagick docs, can this be done? Sorry if this is an obvious one, but I've been searching around on both the Rmagick docs and here, but have only found a couple of items about orientation on SO, nothing about writing to metadata. From the Rmagick Docs; Annotate seems to write the info on the image, which isn't what I want

问题 I am attempting to add GPS data to a TIFF file I am creating in Java. I am using the JAI-ImageIO libraries, although if there is a better library for doing both GPS metadata and custom metadata, I am willing to look into it. I have attempted to add the GPS metadata to the nodes directly, but it seems to strip off the GPS IDF tag. I have attempted to add the GPS IFD to the TIFFIFD object (from the TIFFIMageMetadata object), but that doesn't seem to save the data properly. Basically, I am

问题 I'm getting the fabled Error: Cannot obtain Metadata from... message, particularly http://localhost:1640/Service1.svc I've scoured stackoverflow and Google and, so far, none of it has helped. I created a new product to dumb it down and it's still not working. So I am here asking for help. I'm trying to setup a WCF Service that uses JSON, which means I need to use webhttpbinding, in C#. When I use the WCF Test Client, I get the aforementioned metadata error. I'm using Visual Studio Express

问题 Is it possible in a generic way (for all image types) to be able to read and write metadata in Java, i've found a few examples but they are always specific, for JPEG or PNG for example. I need something generic enough to not if else statement everywhere. 回答1: I don't want to rewrite the source but here is an great example http://johnbokma.com/java/obtaining-image-metadata.html Look at the readandDisplayMetaData function and it will give you an idea. 回答2: Every file format has a different way

问题 In my previous developer life, clearcase was the tool, during 10+ years, for version control. Now the organisation I work for have moved over to git since 4 years. In clearcase there are easy accessible metadata constructions such as attributes on all levels of items such as repositories OR branches OR labels. git notes exists, but after some web surfing I have not come across any clear good way of doing this efficiently and why. For example UCM ClearCase baseline promotion level is a good