柱状图中矢量岩性图例的动态绘制与编辑

Dynamic Drawingand Editing of Vector Rock Legend of Histogram

测井曲线与岩性在石油、煤矿、地质探测中能清楚地表示地底层的含油、气、水等情况。岩性与测井曲线在岩心地底层必然存在相关一致性。现有系统采用ActiveX组件和XML模板技术实现了远程柱状图的绘制,但是存在两方面问题:一是以加载位图的方式绘制岩性,比例变化后图像不清晰,出现失真等毛刺现象;二是某些岩性不符合曲线描述的信息,违背了岩性与测井曲线的相关一致性。为解决当前系统出现的不合理问题,该系统基于B/S的模式,把ActiveX组件嵌入Web浏览器与用户进行交互操作。论文通过把岩性图例的标准格式和绘制命令保存到XML图例文件中,利用多线程下载、GDI+和ADO技术,并且采用动态显示技术在柱状图中实现岩性绘制。在岩心综合柱状图中,把每个绘制命令分解成各个功能不同的函数接口,采用GDI+方式来矢量填充岩性剖面和编辑矢量岩性图例。

In petroleum, coal, geological and probing process, the state of the oil, gas, water, etc can be clearly ex- pressed by logging curve and rock in rock bottom. Lithology and logging curve must exist related consistency in rock bottom. While ActiveX technology and XML templates are used to achieve the drawing of distance histogram in the existing system, there are two defects. Firstly, lithology drew by loading a bitmap, which would cause some phenomena after changing their proportion, such as distortion and other glitches. Secondly, some litbology could not meet the description of logging curve, which was contrary to the related consistency. The improved system, which is based on the B/S mode, embedded the Ac- tiveX component into the Web browser which can interact with users. To the point, the unreasonable problems are solved. In this paper, the standard of rock legend and drawing commands are saved to the XML legend file. At the same time, multi- threaded download, GDI-＋, ADO technology and dynamically drawing technology are used to draw histogram. In the histo- gram, each drawing command is broken down into different interface functions. Then, GDI＋ is used to fill litbologic section and vector rock legend can be edited.