extract

问题 Currently I need a program that given a URL, returns a list of all the images on the webpage. ie: logo.png gallery1.jpg test.gif Is there any open source software available before I try and code something? Language should be java. Thanks Philip 回答1: HtmlUnit has HtmlPage.getElementsByTagName("img"), which will probably suit you. (read the short Get started guide to see how to obtain the correct HtmlPage object) 回答2: Just use a simple HTML parser, like jTidy, and then get all elements by tag

问题 I am trying to use opencv EM algorithm to do color extraction.I am using the following code based on example in opencv documentation: cv::Mat capturedFrame ( height, width, CV_8UC3 ); int i, j; int nsamples = 1000; cv::Mat samples ( nsamples, 2, CV_32FC1 ); cv::Mat labels; cv::Mat img = cv::Mat::zeros ( height, height, CV_8UC3 ); img = capturedFrame; cv::Mat sample ( 1, 2, CV_32FC1 ); CvEM em_model; CvEMParams params; samples = samples.reshape ( 2, 0 ); for ( i = 0; i < N; i++ ) { //from the

问题 I have a dataframe that simplified looks like this only it has 2k rows. I'm wondering if there's a way to either extract data or filter data by the values in the LocationID column. I would like to extract rows that have the word "Creek" or "River" in them which would leave out the other names (such as the Banana Forest value). LocationID, Code Alk River, 232 Bala River, 4324 Banana Forest, 344 Cake River, 432 Alk Creek, 6767 Cake Creek, 766 Thank you! 回答1: We can do this with tidyverse

问题 In iOS 4.0 Apple has redesigned the backup process. iTunes used to store a list of filenames associated with backup files in the Manifest.plist file, but in iOS 4.0 it has moved this information to a Manifest.mbdb You can see an example of this file by making a backup with your iOS 4.0 devices and looking in your ~/Library/Application Support/MobileSync/Backup folder (Look inside the subfolders with the most recent date) Here's a screenshot of what the file looks like in a text editor:

问题 I have unsuccessfully tried to do the task described below, so any help will be much appreciated. The largest table below contains data of quota ownership of fishers (and other variable, ’cpue’) across the time. I categorized fishers according the number of quotas that they own (‘category’). Fishers may increase or reduce the number of owned quotas; therefore, their ownership category also may change. I need extract the information every time when fishers change their ownership. It is the row

问题 I have a dict structure with length 5. The dict structure is called "mat_contents". The information is located in "traindata" and their respective labels in "trainlabels". I want to extract a given number of samples from a given label value. For instance, 60 samples (out of 80) from "traindata" with label "trainlabels" equal 1. I have seen some examples in here but they are different from my request. Assuming this as an example of Input traindata trainlabels a 1 b 2 c 2 d 1 e 1 f 2 The result

问题 I am trying to extract some information from a file that has the following content: field { a:"bb" c:"dd" field_param { x:"xx" y:"yy" } other_param { z:"ee" } abc_param { x: { abc: "value"; cfg:"value"} ze: "value" } } field { a:"bb" c:"dd" field_param { x:"xx" y:"yy" } others_param { z:"ee" } } There are more fields like above, in a text file. Not all the fields are the same format, some have different params. I am trying to extract for each field , to consider it as object with variables

问题 I have a value in Sheet 1, A1. It is either a business name, or its associated business number (as the site searches by number or name). Once I have entered the business name (or number) of the business I need the details on, I want to be able to click a "search" button and have the results of the search displayed in a table with 2 columns (say sheet 1, A5:B9) with the labels in left column of table and the results in the right. the site i need to search is http://www.abr.business.gov.au/ eg.

问题 This will be my first time reading a PDF. I was searching around and found so options to do that with C# and choose to use iTextSharp. So far I've done just the basic like reading the file and getting the content without issues. PdfReader reader = new PdfReader(iPDF.Text); for (int x = 2; x <= reader.NumberOfPages; x++) { iResult.Text = Encoding.UTF8.GetString(reader.GetPageContent(x)); break; } As you can see it is a very very basic code just to read the 2nd page of the PDF into a text file

问题 I want to extract text from pdf file which is submitted by user using android programmatically.How its possible? I referred this link to display the pdf file from SD card. I tried like this to get text from text file can able to speak it out but not from pdf. But the thing is how can I extract text from that PDF? 来源： https://stackoverflow.com/questions/29776848/how-to-extract-text-from-pdf-in-android-programatically