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- xml learning (4) Create xml file
- The basic principle of binocular ranging is shown in the figure above. Binocular ranging mainly uses the direct difference (i.e. parallax) between the lateral coordinates of the target point imaged on the left and right views and the distance Z between the target point and the imaging plane. There is an inverse proportional relationship: Z=fT/d. "@scyscyao: In OpenCV, the dimension of f is a pixel point, and the dimension of T is determined by the actual size of the calibration board checkerboard and the user input value, usually in millimeters (of course it can also be set to in order to improve accuracy) 0.1 millimeters), the dimension of d=xl-xr is also a pixel point. Therefore, the dimension of Z is the same as that of T. "Assume that the coordinates of the target point in the left view are (x, y), in The parallax formed on the left and right views is d.
- XML/RSS Tutorial 1622 2017-02-23 14:34:09
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- xml learning (3) html display xml
- Sometimes we need to display xml in html. For example, if we modify the xml and click save, we need to display the xml source code on the page to let us know that the xml has been modified. The best way is to put the xml in the pre element, but you will find There is no line break, and it is definitely ugly to display all one line, so I made a function that iterates over xmlDOM to format and display xml.
- XML/RSS Tutorial 2066 2017-02-23 14:33:05
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- xml learning (2) xml document tree structure diagram
- XML documents form a tree structure. XML documents must contain a root element. This element is the parent element of all other elements. The elements in an XML document form a document tree. The tree starts at the root and expands to the very bottom of the tree. All elements can have child elements:
- XML/RSS Tutorial 2176 2017-02-23 14:31:08
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- xml learning (1) several file formats of xml
- Using SSM (spring, SpringMVC and Mybatis) 1. Let’s briefly introduce XML. XML is a text-based markup language, similar to HTML, which can easily store data.
- XML/RSS Tutorial 2209 2017-02-23 14:29:47
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- Java&Xml Tutorial (11) JAXB implements XML and Java object conversion
- JAXB is the abbreviation of Java Architecture for XML Binding. It is used to establish mapping between Java classes and XML, and can help developers easily convert XML and Java objects to each other.
- XML/RSS Tutorial 1872 2017-02-22 15:05:51
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- Java object, Json, Xml conversion tool Jackson is used
- It is very common to convert an object into a string in Json format in Java projects. There are many toolkits that can achieve this requirement, such as Gson, JSON-lib, Jackson, etc. This article mainly introduces the use of Jackson. In addition to converting Java objects and Json strings, Jackson can also convert Java objects into Xml format. It is relatively simple to use and is said to be relatively efficient.
- XML/RSS Tutorial 3679 2017-02-22 15:02:36
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- Java&Xml tutorial (10) Using XML as a properties file
- We usually save the configuration parameters of Java applications in properties files. The properties files of Java applications can be a normal file based on key-value pairs with properties as the extension, or it can be an XML file.
- XML/RSS Tutorial 1870 2017-02-22 14:58:35
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- Java&Xml tutorial (8) Convert Java objects to XML using JDOM
- In the previous tutorial, we learned how to use JDOM to parse and modify the content of XML files. This section describes how to convert Java objects into XML data and generate files.
- XML/RSS Tutorial 1698 2017-02-22 14:55:02
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- Java&Xml Tutorial (7) Using JDOM to modify the content of XML files
- JDOM provides a very flexible way to operate XML files. Using JDOM is very simple and the code is concise and readable. Earlier we learned how to use JDOM to parse XML files. This section introduces how to use JDOM to modify the content of XML files.
- XML/RSS Tutorial 1897 2017-02-22 14:51:35
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- Java&Xml Tutorial (6) Using JDOM to parse XML files
- JDOM provides a very excellent Java XML API to more conveniently read, modify, and generate XML documents. JDOM also provides wrapper classes for users to choose specific implementations from SAX, DOM, STAX event parsing, and STAX stream parsing.
- XML/RSS Tutorial 1659 2017-02-22 14:48:17
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- Java&Xml Tutorial (5) Using SAX to parse XML files
- The Java SAX parsing mechanism provides us with a series of APIs to process XML files. SAX parsing is different from DOM parsing. It does not load the entire content of the XML file at once, but loads parts of it continuously.
- XML/RSS Tutorial 1688 2017-02-22 14:42:06
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- Java&Xml Tutorial (4) Using DOM to Generate XML Files
- The child component registers the trigger event, and the parent component registers. The method after triggering the child component event is written in the method. The parent component writes like this Do you like me? {{childWords}} methods: { listenToMyBoy: function (somedata)
- XML/RSS Tutorial 1928 2017-02-22 14:36:06
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- Java&Xml Tutorial (3) Using DOM to modify XML file content
- The DOM parsing method can also be used to modify XML data. We can use it to complete operations such as adding elements, deleting elements, modifying element values, modifying element attributes, etc.
- XML/RSS Tutorial 2210 2017-02-22 14:33:22
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- Java&Xml Tutorial (2) Using DOM to parse XML files
- The DOM XML parsing method is the easiest to understand. It reads the XML file into memory as a Document object, and then you can easily traverse different element and node objects. Traversing elements and nodes does not need to be done in order.
- XML/RSS Tutorial 1756 2017-02-22 14:30:35
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- Introduction to Java&Xml Tutorial (1)
- XML is a technology widely used for data transmission and storage. The Java language provides a variety of APIs to parse XML, such as DOM, SAX, StAX, and JAXB. There are also other APIs for parsing XML, such as JDOM. The purpose of this tutorial is to explore using different types of APIs to parse XML and learn to perform some common tasks using XML.
- XML/RSS Tutorial 1365 2017-02-22 14:27:05
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