map also has a for flex package. However, compared to this, this function is complete and the documentation is rich. There is absolutely no problem in developing a GIS application.Build Demo
Open Flash Builder 4 to create a new FlexWebGis Web work, copy the agslib-2.5-2011-11-30.swc package to lib.
Add a flex. web. gis. layer package and create a GoogleMapLayer. as class. The Code is as follows:
1 package flex. web. gis. layer2 {3 import com. esri. ags. SpatialReference;4 import com. esri.
Mouse events on maps and graphics(Mouse events on map and graphics, specifically those on map and graphiclayer)
The ArcGIS javascript API map and graphics layer provide a large set of MouseEvents users can use to interact with these objects(ArcGIS javascript API map and graphiclayer provide a large number of mouse events through which users can interact with these objects). To register to listen toMap's onclick event:
Function Init () {var map = new ESRI. map (...); dojo. connect (MAP, "oncl
color (): uint{Return this. _ color;}Public Function set color (value: uint): void{This. _ color = value;}Public Function get maxvalue (): Number{Return this. _ maxvalue;}Public Function set maxvalue (value: Number): void{This. _ maxvalue = value;}
Override public function draw (sprite: Sprite, geometry: geometry, attributes: object, MAP: Map): void{If (! Geometry) return;If (! (Geometry is mappoint) return;VaR point:
Global coordinate (stage coordinate) local coordinate content coordinate system map coordinate (mappoint)
Flash and flex provide three different coordinate systems for different purposes
Global is (stage-level)
Local Coordinate System (component-level)
Content coordinate system (relative to the local coordinate system)
Map coordinate (mappoint)
The points in these coordinate systems can be converted, and th
The address anti-code is used to query the corresponding place names through latitude and longitude. The following example shows the place names corresponding to latitude and longitude 118.777802 and 32.061699. The result is "41, yuanshengxiang, Gulou District, Nanjing City, Jiangsu Province, China ".
[Java]// ----------------------------------- PACKAGE ------------------------------------Package com. pstreets. gisengine. demo. rim;// ------------------------------------- IMPORTS ---------------
Q: Read the Mapinfo table on the hard disk in C # desktop and Web applications.A: You can use the following code:Using MapInfo. Data;Miconnection connection = new miconnection ();Connection. open ();Tables [0] = connection. Catalog. OpenTable (@ "G:/ch_shenghui.tab ");Tables [1] = connection. Catalog. OpenTable (@ "G:/shengjie_p.tab ");Mapcontrol1.map. Load (New MapInfo. Mapping. maptableloader (tables ));Q: How do I display the coordinates of the mouse on the taskbar of the mapxtreme2004 deskto
ArcGIS flex API provides several common geometric figures, such as points, lines, and surfaces. When more geometric figures are needed, you need to expand the geometry in ArcGIS flex API. The general idea is to expand the polygon and the polyline of the linear ry. Polygon consists of an array of rings, while polyline consists of a path. Both ring and path are essentially an array of mappoint.
Take a star as an example:
Package gispace. arcgisapiex. ge
The address anti-code is used to query the corresponding place names through latitude and longitude. The following example shows the place names corresponding to latitude and longitude 118.777802 and 32.061699. The result is "41, yuanshengxiang, Gulou District, Nanjing City, Jiangsu Province, China ".
[Java]Package com. pstreets. gisengine. demo;Import com. mapdigit. gis. DigitalMap;Import com. mapdigit. gis. MapPoint;Import com. mapdigit. gis. geomet
setting the above two parameters to prevent simultaneous changes.1.5 Mmutexaccept locks are also prevented from being asynchronous when setting mbacceptkeyframes. MMUTEXNEWKFS is the same principle.2 overall flow void Localmapping::run () {mbfinished = false; while (1) {//Tracking would see that Local Mapping is busy Setacceptkeyframes (false); Check If there is keyframes in the queue if (Checknewkeyframes ()) {//BoW conversion and Inse Rtion in Map/* 1. First Calculate Bow 2. For the
Check the current Python version.
$ python --versionPython 3.4.2
2. modify the Python version at the system level.
We can use update-alternatives to change the Python version for the entire system. Log on as a root user. first, list all available python alternative versions:
# update-alternatives --list pythonupdate-alternatives: error: no
……Totaldownloadsize:44MIsthisok[y/N]:y3. After the installation is complete, verify that[[emailprotected]~]#java-versionjavaversion"1.6.0_37"OpenJDKRuntimeEnvironment(IcedTea61.13.9)(rhel-1.13.9.4.el5_11-x86_64)OpenJDK64-BitServerVM(build23.25-b01,mixedmode)4. The path to the default installation via Yum is/usr/lib/jvm[[emailprotected]~]#cd/usr/lib/jvm[[emailprotected]jvm]#lltotal24drwxr-xr-x3rootroot4096Jan1220:01java-1.6.0-openjdk-1.6.0.37.x86_64lrwxrwxrwx1rootroot21Jan1220:01jre->/etc/
Real-time display of the current mouse position:
TIPS: The current mouse position (script required)MapInfo. Tools. mousetool mousemove (
Object
Sender, mouseeventargs E)
{System. Drawing. pointf displaypoint = New Pointf (E. X, E. y );MapInfo. Geometry. dpoint mappoint = New MapInfo. Geometry. dpoint ();MapInfo. Geometry. displaytransform Converter = Mapcontrol1.map. displaytransform;Converter. fromdisplay (displaypoint, Out
This article describes how to use an asynchronous method to eliminate the performance problems of web service calls using Microsoft ASP. NET and the consumption of thread pool resources. Situation: Performance damage when Web services are called from ASP. NET pages
When we discuss web services in this article, we hope to enjoy web services in various situations. One major case is to access the Web service from an intermediate layer environment (such as an ASP. NET web page. People who provide s
.
// GraphicsLayer. graphicProvider = fs. features;
// The graphics layer is using a symbolFunction which will
Symbolize the drivetimes in different colors
// SymbolFunction = "fillFunc"/>
// The fillFunc () is using the "ToBreak" attributes, which
The GP task returned, to set different symbols on different drive
Times.
Import com. esri. ags. Graphic;
Import com. esri. ags. symbol. Symbol;
Import com. esri. ags. tasks. ExecuteResult;
Import com. esri. ags. tasks. FeatureSet;
Import com. esri. ag
Where can I find the object model document?
The object model of the Office application is recorded in the language reference of the office two versions: Microsoft Office 97 Visual Basic for Applications Language ReferenceISBN 1-57231-339-0
Microsoft Office 2000 Visual Basic for Applications Language ReferenceISBN 1-57231-955-0.The language reference is provided on msdn and Microsoft Office's online help. You can also purchase printed language reference. For order information, visit:Http://mspres
. Enter the following command on the terminal:
Sudo update-alternatives -- install/usr/bin/gcc/usr/bin/gcc-4.4 40
Sudo update-alternatives -- install/usr/bin/gcc/usr/bin/gcc-4.1 30
Set the default GCC version. Run the following command:
Sudo update-alternatives -- config gcc
Result:
There are 2 choices for the alternative gcc (providing/usr/bin/gcc ).Se
->/etc/alternatives/java*
Alternatives is a multiple version management software under Linux, which can be used to achieve version switching of JDK, which is described later. First come to the alternatives directory to see what's on the ground.
fordreamxin@compiler207:/etc/alternatives$ ls java*
Java java.1.gz javac
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.