GisMap is a .NET component for building GIS and CAM/CAD application. It s a part of MVisionTech VisiWorks data visualization framework. GisMap uses Canvas for drawing geometrical shapes and GDAL project for handling different geographical vector and

CanvasGIS is an object oriented 2D graphics drawing component. It s a part of MVisionTech open source GIS and data visualization framework. CanvasGIS had been used in the GisMap component presented in my previous article. Many applications requi

利用javascr ipt动态创建<canvas>标签，设置不同的颜色画笔，随意绘制矩形和线(Use Javascr ipt to create <canvas> tags dynamically, set different color brushes, draw rectangles and lines at will)