More Infomration

Help Document

Frequent Q & A

Data Description

Development Guide

 

 




 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


</COMMENT>
 
(Please be patient while the applet is loading)

Web GeoViewer (Image Viewer 5.0) lets you:


Internet Mapping made easy

  • Live access raster and vector data
  • Interactive toggle multiple GIS layers on and off
  • Translucent filter layer for thematic mapping
  • Dynamic identify any geographic feature and place
  • Fully Customizable map composition, legend color and text

 

Internet Imaging made simple

  • Multi-temporal image themes comparison with interactive swipe controls
  • Multi-linked overviewer and magnifier window with synchronized viewing
  • Info Panel with on-line help, text description and history record
  • Multiple image layers arrangement
  • Semantic zoom by rectangle, smooth pan and full extent functionality
  • Real-time zoom (Animated zooming) in fine detail
  • Area determination, perimeter calculation, and distance measurement
  • Dynamic buffering zone around geographic point, line and polygon
  • 3D rotated text label and image regional annotation
  • On-screen digitizing and boundary delineation
  • Geo-referenced Imagery with on-screen coordinate info display


 

General Information

Open and reorder multi-temporal image themes (layers)

Click and hold down mouse to drag a rectangle box to zoom in the area of interest

Click and hold down mouse to drag a rectangle box to zoom out

Drag the mouse upper-right to zoom in, lower left to zoom out

Click and drag the mouse to pan the image

Click to fit the image on screen to full view

Click and open the set units dialog box, change the length and area units used for display.

Click to measure point position in the displayed image

Click to measure length and segments in the displayed image. Left click the mouse to add a point in the image, draw a line representing the distance you want to measure, right click and drag the mouse to move a point. The length is the accumulative distance of line segments.

Click to measure perimeters and areas in the displayed image. Left click mouse pointer on image to add a point. Continue clicking to outline area of interest. Right click and drag the mouse to move a point

Digitize geographic point, line or polygon you want to buffer around first (the more vertices, the better), then click the buffer and popup buffer dialog box, type the distance and select the units to create a buffer area around the feature, a buffer zone will be created at the distance you specified.

Click this icon to remove all digitized points, line and polygon on the image.

Click this icon and move the mouse pointer over a feature you want to identify. The features in any visible GIS layers under the pointer will be identified.

Turn the magnifier window 2X on and off, drag the window to see a magnified view of a small area without changing the extent of your view.

Click the mouse pointer on the display where you want to add the text, a text dialog box will popup and type the text string in the text field, choose the font name, style, size, color and rotation angle for the display.

Click to remove all the texts you added on the display

Turn on-screen coordinate display visible and invisible

Click to open the help document


Click the color button to change the GIS layer and legend color


Click the check box to turn the GIS layer on and off

 

Move the horizontal or vertical slider bar to control the swipe line and view portion of the top image over the bottom image


If you find any bugs or want to contribute code to the Image Viewer or Web GeoViewer, please feel free to contact Liang Guo (guo@rohan.sdsu.edu)
[Image Viewer 3.0] [Top]
[Home] [Image Viewer 4.0]
Copyright © 2003 All Rights Reserved