mastering gis

information through the Attributes property field.Findtask: A findresults array is returned, Findresults[i].feature can be added to the Graphicslayer, or property information can be obtained from the Attributes attribute field.Identifytask: A identifyresults array is returned, Identifyresults[i].feature can be added to the Graphicslayer, or property information can be obtained from the Attributes attribute field.Transferred from: http://www.cnblogs.com/luxiaoxun/p/3297654.htmlReference:Http://h

For the development of AE really do not interest, want to do a good job JS development, but this course to test, but also to do a design. So I decided to make this development before the design week came. And then you can have the tricks. Mainly through the blog can urge themselves to engage in, can be completed as soon as possible. Demand Analysis1. Basic map Operation function. Eagle eye view between left and right windows.2. Basic query and statistical functions. Queries that include properti

container in the same network. Container:{name|id}, use a different container network stackStandalone Mode : All container networks within the host are isolated, and we can The none parameter, which indicates that the network connection for container is turned offStorage Mountsunder normal circumstances, by adding the-v parameter, you can bind a directory on host to container and run container to read and write it .650) this.width=650; "src=" http://img.blog.csdn.net/20160202180100991 "width="

Since the invention of paper, human beings have used paper maps to represent geospatial information for thousands of years. After the emergence of the computer, people began to use discrete and topological relationship between point strings in the computer to describe various spatial elements of points, lines, planes, and bodies. This led to the emergence of digital maps. With the development of information technology, digital map is no longer the only way to express geospatial data in computers

The message you just saw, HP A new printer product will not be sold to you. HP's latest commercial printer edgeline will only be available under contract Service The price is based on the number of printed pages and output quality. The edgeline technology, developed by Hewlett-Packard in year 45, has a high ink usage efficiency, making it hard for Hewlett-Packard to make money from consumers by using ink and other consumables. It seems that services are becoming mainstream, not products or

Recently, I have been studying secondary GIS development. As a newbie, the best way is to bubble the Forum and read the source code. Of course, it involves geographical expertise. It cannot be understood in a day or two, only when learning programming, You can gradually experience the knowledge of some geographic specialties. In just a few days, I learned a little bit about it. Let's look at the features first. General functions include ①: Eaglee

var dom = "This allows us to achieve the following effects:When the mouse moves to a province in China, the pop-up box displays the name of the province.For a complete example, see http://www.supermap.com.cn:8090/iserver/iClient/forJavaScript/examples/utfGridLayer.html6. Example: Utfgrid flag EditionAnother attribute featured in the product sample program is an example: Utfgrid flag Edition. This example shows a quick response to a user's mouse movement event through the Utfgrid layer, showing

coordinate transformation is to realize the transformation of the coordinate system of digitized data and the correction of drawing distortion error. It is divided into affine transformation, similarity transformation and two times transformation.1) affine transformation (affinetransform)That is, the coordinate transformation:Set: X, y for the digitizer coordinates, X, y for the theoretical coordinates, M1, M2 for the map landscape and longitudinal actual scale, the two coordinate system angle i

Three years ago, I bought a GIS plug-in framework book from Jiang potao, as recommended by my senior brother. At that time, while reading a book, I made a complete implementation of the examples, which benefited a lot. Later, a plug-in C/S system was developed for the project, using the MEF framework provided by Microsoft. In this system, communication between plug-ins and plug-ins not involved in Jiang potao's book has been completed. However, Jiang

Open-source (free) 3D (terrain, game) GIS platform under. NET platform Axiom: open-source 3D game engine. It is the. Net version of the famous open-source engine ogre. The source code is fully constructed using C #, mainly for the graphic part.Realmforge: open-source 3D game engine. The graphic part adopts axiom and is combined and rewritten by some other modules such as network and AI. It is fully constructed by C. AxiomThe axiom 3D engine is an open

Sharpmap Analysis Note for open-source GIS project based on. NET 2.0 (12): sharpmap WMS service and openlayers access Su Weimin http://www.gisdev.cn/http://blog.csdn.net/suen/ date: 2007-7-12 All copyrights reserved. If you need to reprint the information, contact the author and indicate the source in a conspicuous position. WMS stands for "Web Map Service ). It is an OGC standard that defines three major operations for creating and displayi

Method for generating a flat buffer in GIS In arcengine, there are two buffer generation methods: itopologicaloperator. buffer (double distance) and geopressor. buffer. The first method cannot select a parameter. By default, the circle Header Buffer is generated. The second method requires a buffer for the layer, which is extremely inconvenient for operations on a single element, and the line_end_type parameter is set to "flat ", it cannot be genera

Beijing has now merged Chongwen and Dongcheng into Dongcheng, and Xicheng and Xuanwu into Xicheng. How does GIS merge them? The procedure is as follows: To back up the operated graph, first open "arccatalog ";Figure 1. Open arccatalog Select a work area;Figure 2. Select a work area Select the layers to operate and copy them.Figure 3. file backup Paste and rename the fileFigure 4. file backup and renameIn this way, the file backup operation is com

Spatial data is composed of graphs and attributes, how they are organized together, how spatial indexes and attribute indexes are implemented, and how to sort records, what policies are used to read images? How are images rendered? How are space queries and space analysis achieved? How are graphics Editing performed? With such a question, first let everyone have an understanding of the Framework process. With such a framework, we can further study each link in the framework one by one, here we w

very good by using the geographical location index of MongoDB. After the query results are displayed on the map, they are basically a circle, for example, the display effect, it indicates that the computation is accurate. The query performance is acceptable. In a correction database with around 10 million points, the speed of querying points within 20 kilometers is about 1-2 seconds in a single machine, it takes about 6 to 10 seconds to query a 200 km point. It takes about 20 minutes to query a

Recently, the unity3d and Gis integration project is about coordinate conversion, for example, converting the longitude and latitude (166.23.9.27, 39.55.15.74) to the corresponding position point in unity, not much nonsense about the Code: Using UnityEngine; using System. collections; public class SaiGetLatLog: MonoBehaviour {public Transform firstPoint; // public Transform secondPoint at the upper left of Unity; // public SaiEarth firstSai at the low

GIS There are some common terms in the system. The following describes some basic concepts that are frequently used in the system. Data Dictionary:It is a configuration database that maintains the normal operation of the system and ensures that the system conforms to the actual application. The content includes the ownership name andCodeSystem parameter codes such as the location class name and code, land ownership code, and slope code, as wel

course) 16) david h. Eberly's 3D Game Engine Design: A Practical Approach to Real-Time Computer Graphics 17) Alan H. Watt, 3D computer graphics (3rd edition) 18) Computer Graphics of James D. Foley and others: Principles and Practice in C (2nd edition). Let's take a look at this Bible when it's okay. Part 4: Where can I download the materials? My csdn resources are available. I will upload them one after another. You can also search for them online. Computer Graphics learning methods and re

1. Enter the plug-in GIS application framework 1.1 Application Framework 1.1.1 application framework Overview "Framework (FrameworkIs a reusable design of all or part of a system. It is usually composed of a group of abstract classes and classes"1. The development of software products is a complex system engineering. As the complexity of the problems to be solved increases, the software product R D process has evolved from the past "Worksh

> pt1.y (TPT. x> = linept1.x TPT. x (TPT. x> = linept2.x TPT. x Meetpointnum ++;}}Else{Double KK, BB;Double meetpty, meetptx;Kk = (pt1.y-pt2.y)/(pt1.x-pt2.x );BB = pt1.y-kk * pt1.x;Meetpty = KK * TPT. x + BB;Meetptx = TPT. X;// Handle special cases where the intersection is the endpointDouble dx, Dy, dx2, dy2;DX = meetptx-pt1.x;DY = meetpty-pt1.y;Dx2 = meetptx-pt2.x;Dy2 = meetpty-pt2.y;If (dx> =-0.0000000001 DX Dy {Tabpoint pt3;If (k = 1){Pt3 = (tabpoint) part. pointarray-> getat (pointsize