有问人到怎么把点图层的图标 随着地图大小缩放而变化，查了下文档，主要是在视图——数据框属性——常规--参考比例 进行设置就可以了！

About working with data frame reference scales

With a data frame reference scale, you define the scale at which text and symbols will appear at their true size. If you zoom in or out, the text and symbols will change scale along with the display. Symbols and text will appear larger as you zoom in on your data frame and smaller as you zoom out. Setting a reference scale is like freezing the symbol and text sizes used in your data frame; the way they look at the reference scale is maintained at all scales. Unless you explicitly set a reference scale, the current scale is your reference scale. (在data frame/properties/general里设置参考比例尺,如果没有进行设置,则默认当前比例尺为参考比例尺.设置了参考比例尺后,text和symbol对象会随着视图缩放而一起放大或缩小,不再像默认的一样固定不变.)

One reason to set a reference scale is if you want the detail in your data frame to look the same on-screen in data view as it will when you print it. If you're going to print a map, you should set a reference scale to maintain a quality appearance. (设置参考比例尺的作用在于,便于直接在data view界面查看text和symbol的实际大小,即打印大小,类似于切换到layout view后点击1:1后的视图效果.)

When a reference scale is set, all feature symbology, labels, and graphics in the current data frame will be scaled relative to the reference scale. However, you can disable scaling for individual layers: double-click the layer, click the Display tab, and uncheck Scale symbols when a reference scale is set. Since geodatabase annotation and dimension features have their own reference scales, they are not affected by a data frame reference scale(设置参考比例尺后,data view的非要素项,如symbology,labes,graphics都将会一起随视图缩放.当然,你也可以设置某一图层不变.右击该图层,properties/display/scale symbols when a reference scale is set前的勾选去掉就可以了.).

The two images below show the difference between having a reference scale set and not having it set when you zoom in and out on your map. In the top image, a reference scale is set, and in the bottom image, it isn't.下图显示了设置参考比例尺前后的效果

.http://hiphotos.baidu.com/yyzzhaohaizi/pic/item/55ce509492532303d0135e33.jpgscale设置" TITLE="arcgis的reference scale设置" />后)